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Master list of Allen Organ models of the 70's - 90' with details?

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    Master list of Allen Organ models of the 70's - 90' with details?

    I have narrowed my search for a classical practice organ to used Allen organs built since the 1970's. The 123C was the focus of my attention on eBay for awhile, but I soon found myself distracted by the posting of an ADC 530T, which was followed by the availability of an ADC 530 (without the "T"), and an MDC-42. Manufacture dates vary from the mid 1970's to late 1980's and prices on eBay generally $1,000 - $2,000 before shipping. Each time I search organforum.com for posts relating to the specific model, but as soon as I get some advice about one model, another pops up. I have general guidelines such as ADC being more advanced than MDC and the advisability of installing reverb on earlier Allens to improve tone. However, I have no idea of the totality of Allen models suitable for home practice manufactured in the 70's 80's and 90's. How do I know if the selection being offered for sale is a good representation of models manufactured during that time period? Am I missing something?
    Last edited by Admin; 02-19-2017, 06:52 AM. Reason: Changed title and made thread sticky.

    #2
    The sequence of general families is as follows for their digital organs:

    MOS I
    MDC
    MOS II
    ADC
    MADC
    MDS

    MOS I was the 1st digital series.

    MOS II was a refinement but not very major changes.

    MDC stands for Modified Digital Computers, probably the worst of the bunch. Built only for low cost and manufacturing ease. Lots of duplexing.

    ADC: Allen Digital Computer; available in early (Models like ADC-4000, ADC-5000), middle, and late models (such as ADC4300, ADC 6300, etc.). The late models are very nice. These are full-cage organs.

    MADC were modified versions of the ADC where a true cage was not employed. Models also used the ADC prefix, but were like: ADC-2100, 1100, 3100, and then ADC-3160, then ADC-3160A. Get an A version if you can, but they are all quite nice for smaller organs.

    MDS: Master Design Series, starting from around 1990. These were the 1st Allens with full MIDI implementation. Earlier models had card readers, but later models dropped it.

    Renaissance and Quantum followed.

    If you go to the Allen website under Customer Support you can find the owner's manuals. They will tell you quite a bit about individual models. Look under "More Models" for these older organs.

    Comment


      #3
      Thanks, toodles! What is a "full-cage" organ? Based on your helpful explanation, I guess the eBay listing for "Allen Digital 123C" would be for an ADC series organ. I'll pass on the MDC series! The Allen organ manual page will be very useful.

      Comment


        #4
        The 123C is a MOS I organ.

        A true cage is a metal box with card-edge connectors in the back; circuit board assemblies slide into the cage in slots, and pressing firmly seats the circuit board into the connector. This is the back of an ADC organ; the cage is the silver metallic object on the right side of the photo halfway up/down the console. See the ebay listing for a "cage". It's a metal shell with card edge connectors in the back to hold individual circuit boards.

        http://www.anim8.com/organ/gallery/DSCN0743.jpg

        Here's a closeup with the cover removed: http://www.anim8.com/organ/gallery/DSCN0756.jpg

        The more full the cage is, the more resources the organ had, and the greater the ability to adjust the voicing on the organ. Their biggest organs of this era used multiple cages; medium sized organs used just 1; and some of the lower priced medium sized organs used half a cage.

        The MADC used similar technology as the ADC, but did not use a cage. They used a sandwich assembly of 2 or 3 circuit boards to handle the small 2-manual organs--the biggest were the ADC-3100, ADC-3160, and ADC-3160A. These were 2 manual drawknob organs with much duplexing between the great and pedals, and around 35 stops total.

        If you can't get to the Allen manuals page by my description, here is a link: http://www.allenorgan.com/www/suppor...rsmanuals.html

        Comment


          #5
          Your guidance is much appreciated, Toodles! Allen Digital 123C sounded a lot like ADC to me, so I certainly had the wrong generation there. Thanks for the definition of "true cage." I feel much more confident choosing among Allen models now that I better understand their characteristics.

          Comment


            #6
            Hi,

            I don't know if you meant that the Allen 123C sounded like an ADC model, or whether you thought it sounded in terms of tone like an ADC, while it really was a MOS-1 organ.

            The reality is that the MOS-1 organs through internal speakers, sound much like comparable models in the early ADC line. There were improvements, but the basic tone was still the same. It sounded like an Allen, whether it was from 1971 to 1985.

            The technological improvements were more clearly defined in the larger organs with more tonal resources and audio channels.

            The late ADC and MDS models were definitely better than say MOS-1 and MOS-2 organs.

            AV

            Comment


              #7
              Sorry for the confusion, arie v! Your comments are very helpful, as I have not heard a side-by-side comparison and am trying to decide whether the ADC530 is worth the extra several hundred bucks over the 123C. Either way, I anticipate digital reverb will be added to improve on the sound (and headphone jacks, too, just in case anybody other than the organist in the family wants to practice.)

              Comment


                #8
                The 123C will not have celeste voices, the 530 will.
                The 123C might have alterable voices, but the 530 definitely will not.
                The 123C might have a moving stop combination action; the 530 will have blind presets.

                The 123C will have a larger stoplist.

                Comment


                  #9
                  To my ears, there is much similarity among MOS (1&2), ADC, and MADC as far as the basic tone colors and quality of sound, at least at the lower end where you're working with only two audio channels. A multiple computer MOS organ, especially if it's MOS-2, actually beats the smaller ADC or any MADC in sheer beauty of tone and breadth of the ensemble. But the ADC and MADC models, even the low end ones, have certain features that outshine MOS -- a true celeste on even the smallest models, distinct frequency separation between the channels, better chiff, and much better chimes and other percussions.

                  I think the very last ADC models (the full-line ones, such as the 4300, 6300, etc.) had a clearly improved realism, at least in part due to the new TG-10 "articulate voicing" cards that produced a fully adjustable and surprisingly realistic chiff and air component for selected voices. But I think they may have also used some improved samples or better rendering, because even the basic tone colors seem more realistic in these models.

                  Early MDS was little different from late ADC, carrying over most of those late model ADC characteristics, but MDS marked a huge change in Allen's system design, introducing a complete MIDI implementation that has required virtually no changes to this very day. MDS models did get improved tone generation in later iterations, though not dramatically different.

                  It was Renaissance that was the groundbreaking technology, so much of a change and so thoroughly modern that it endures to the present with only modest upgrades. Personally, I think Renaissance organs sound great even up close, which cannot be said for many of the early digitals. The graininess and grittiness of the MOS and ADC sounds is completely gone as Renaissance works pretty much like the exotic software organs of today, Hauptwerk and its kin, by storing and playing back real sound clips of pipes playing, not just a single wave. I think it's more listenable up close because there is less artificial processing of the tone, thus fewer artifacts to annoy the ear.

                  In spite of not being all that good up close, even the old MOS organs sound incredibly good in a proper installation and in a lively acoustical setting. I still find myself in awe when I walk into a church and her one of these old organs playing and it really sounds like pipes under the right circumstances.

                  For me, the difference between a small MOS and a small ADC (MADC) would come down to features. All things being equal, I'd take the newer one over the older one, but a small MOS that happened to have the card reader and the moving tab action would probably get my vote over a small MADC without card reader or moving tabs.

                  The ones to avoid, as has been said, are the MDC models, those pitifully crippled digitals introduced during the MOS era to give dealers a dirt cheap organ to replace the old T-12 after its retirement. In spite of their repuation, I have sold a few of them myself both new and used, so I must think they're OK for some situations. As long as you recognize their limitations -- no mixtures, no couplers, only a handful of truly unique tone colors unified around, and the 6-note limit when playing the "celeste effect" as well as the disastrous "carillon" stop that's good for hardly anything other than chiming the hour -- and if you just want a solid Allen console with real Allen keys and pedalboard to practice on at home, one of these is OK, and the price is usually very low.
                  John
                  ----------
                  Church: Allen MDS-45 with Allen MIDI-DIVISION-II expander
                  Home: Allen Renaissance R-230 with expanded four-channel audio and MIDI-DIVISION-II
                  Shop: Bunch of organs in varying conditions, some good, some not...
                  Half of an incredible two-man organ service team -- servicing all the major digitals in Arkansas churches
                  https://www.facebook.com/pages/Birds...97551893588434

                  Comment


                    #10
                    Note: The following is a general compilation of information from various sources. It may or may not be accurate and is being provided as a best-effort convenience. Any authoritative information should be obtained from the manufacturer.

                    The following is from Jan Girardot's Electronic Organ Reference List,
                    at http://www.lizardweb.com/E-organ_list_v.4_(DB)1.pdf reformatted for this document and sorted by year built.

                    0................................................. ................. 1970 Transistor 32 2 (console)
                    100 1971 Digital 32 2 (MOS-1)
                    200 1971 Digital 32 2 (MOS-1)
                    300 1971 Digital 32 2 (MOS-1)
                    600 1971 Digital 32 2 (MOS-1) (2-computer)
                    1500 1971 Digital 32 3 (MOS-1) (5-computer)
                    900 1972 Digital 32 3 (MOS-1) (3-computer)
                    902 1972 Digital 32 3 (MOS-1) (3-computer)
                    1200 1972 Digital 32 3 (MOS-1) (4-computer)
                    3300 1972 Digital 32 2 (MOS-1)
                    101 1973 Digital 32 2 (MOS-1)
                    102 1973 Digital 32 2 (MOS-1)
                    103 1973 Digital 32 2 (MOS-1)
                    120 1973 Digital 32 2 (MOS-1)
                    121 1973 Digital 32 2 (MOS-1)
                    122 1973 Digital 32 2 (MOS-1)
                    123 1973 Digital 32 2 (MOS-1)
                    201 1973 Digital 32 2 (MOS-1)
                    301 1973 Digital 32 2 (MOS-1)
                    601 1973 Digital 32 2 (MOS-1) (2-computer)
                    602 1973 Digital 32 2 (MOS-1) (2-computer)
                    620 1973 Digital 32 2 (MOS-1)
                    1800 1973 Digital 32 2 (MOS-1)
                    2100 1973 Digital 32 2 (MOS-1)
                    182 1974 Digital 32 2 (MOS-1)
                    202 1974 Digital 32 2 (MOS-1)
                    631 1974 Digital 32 3 (MOS-1)
                    3600 1974 Digital 32 2 (MOS-1)
                    416 1975 Digital 32 2 (MOS-1) Theatre
                    420 1975 Digital 32 2 (MOS-1)
                    424 1975 Digital 32 2 (MOS-1)
                    603 1975 Digital 32 2 (MOS-1) (2-computer)
                    632 1975 Digital 32 3 (MOS-1)
                    903 1975 Digital 32 3 (MOS-1) (3-computer)
                    920 1975 Digital 32 3 (MOS-1) Theatre
                    1203 1975 Digital 32 3 (MOS-1) (4-computer)
                    381 1976 Digital 32 2 (MOS-1)
                    421 1976 Digital 32 2 (MOS-1) Theatre
                    422 1976 Digital 32 2 (MOS-1) Theatre
                    425 1976 Digital 32 2 (MOS-1) Theatre Music Scene
                    460 1976 Digital 32 2 (MOS-1) Theatre
                    1220 1976 Digital 32 2 (MOS-1)
                    2700 1976 Digital 32 2 (MOS-1)
                    282 1977 Digital 32 2 (MOS-1)
                    417 1977 Digital 32 2 (MOS-1) Theatre
                    423 1977 Digital 32 2 (MOS-1)
                    431 1977 Digital 32 2 Theatre
                    432 1977 Digital 32 2 (MOS-1) Theatre
                    435 1977 Digital 32 2 (MOS-1) Theatre Music Scene
                    461 1977 Digital 32 2 (MOS-1) Theatre
                    2400 1977 Digital 32 2 (MOS-1)
                    MDC-10 1977 Digital 13 2 (MDC-1) Theatre Compact (spinet)
                    MDC-11 1977 Digital 13 2 (MDC-1) Theatre Compact (spinet)
                    MDC-20 1977 Digital 32 2 (MDC-2)Classic 20
                    MDC-30 1977 Digital 32 2 (MDC-1) Theatre 30
                    MDC-31 1977 Digital 32 2 (MDC-1) Theatre 31
                    203 1978 Digital 32 2 (MOS-1)
                    683 1978 Digital 32 3 (MOS-1)
                    433 1979 Digital 32 2 (MOS-1) Theatre
                    436 1979 Digital 32 2 (MOS-1) Theatre Music Scene
                    462 1979 Digital 32 2 (MOS-1) Theatre
                    621 1979 Digital 32 2 (MOS-1)
                    124 1981 Digital 32 2 (MOS-2)
                    125 1981 Digital 32 2 (MOS-2)
                    224 1981 Digital 32 2 (MOS-2)
                    225 1981 Digital 32 2 (MOS-2)
                    305 1981 Digital 32 2 (MOS-2)
                    453 1981 Digital 32 2 (MOS-2) Theatre
                    456 1981 Digital 32 2 (MOS-2) Theatre Music Scene
                    465 1981 Digital 32 2 (MOS-2) Theatre
                    505 1981 Digital 32 2 (MOS-2) (2-computer)
                    665 1981 Digital 32 3 (MOS-2) (2-computer)
                    675 1981 Digital 32 3 (MOS-2) Theatre (2-computer)
                    705 1981 Digital 32 2 (MOS-2) Theatre (3-computer)
                    805 1981 Digital 32 3 (MOS-2) (3-computer)
                    965 1981 Digital 32 3 (MOS-2) (3-computer)
                    1105 1981 Digital 32 2 (MOS-2) (4-computer)
                    1403 1981 Digital 32 2 (MOS-2) (4-computer)
                    1405 1981 Digital 32 2 (MOS-2) (6-computer)
                    MDC-12 1981 Digital 13 2 (MDC-1) Theatre Compact (spinet)
                    MDC-22 1981 Digital 32 2 (MDC-1)Classic 22
                    MDC-32 1981 Digital 32 2 (MDC-2) Theatre 32
                    MDC-42 1981 Digital 32 2 (MDC-1)
                    MDC-52 1981 Digital 32 2 (MDC-1)
                    MDC-15 1982 Digital 32 2 (MDC-1)
                    ADC-1000 1983 Digital 32 2 (ADC)
                    ADC-1010 1983 Digital 32 2 (ADC)
                    ADC-2000 1983 Digital 32 2 (ADC)
                    ADC-2010 1983 Digital 32 2 (ADC)
                    ADC-3000 1983 Digital 32 2 (ADC)
                    ADC-3500 1983 Digital 32 2 (ADC) Theatre
                    ADC-4000 1983 Digital 32 2 (ADC)
                    ADC-4500 1983 Digital 32 3 (ADC) Theatre
                    ADC-4600 1983 Digital 32 3 3-manual theatre console
                    ADC-5000 1983 Digital 32 2 (ADC)
                    ADC-5400 1983 Digital 32 3 (ADC)
                    ADC-6000 1983 Digital 32 3 (ADC)
                    ADC-6500 1983 Digital 32 3 (ADC)
                    ADC-7000 1983 Digital 32 3 (ADC)
                    ADC-8000 1983 Digital 32 3 (ADC)
                    ADC-9000 1983 Digital 32 3 (ADC)
                    ADC- 220 1984 Digital 32 2 (MADC-1)
                    ADC- 320 1984 Digital 32 2 (MADC-1)
                    ADC- 420 1984 Digital 32 2 (MADC-1)
                    ADC- 520 1984 Digital 32 2 (MADC-1)
                    ADC- 720 1984 Digital 32 3 (MADC-1)
                    ADC-4100 1984 Digital 32 2 (ADC)
                    ADC- 710 1985 Digital 32 2 (MADC-2) Spectrum
                    ADC-1100 1985 Digital 32 2 (MADC-2)
                    ADC-1110 1985 Digital 32 2 (MADC-2)
                    ADC-2100 1985 Digital 32 2 (MADC-2)
                    ADC-2110 1985 Digital 32 2 (MADC-2)
                    ADC-3100 1985 Digital 32 2 (MADC-2)
                    ADC-6800 1986 Digital 32 3 (ADC)
                    Classic I 1986 Digital 32 2 (ADC)
                    Classic II 1986 Digital 32 2 (ADC)
                    ADC- 221 1987 Digital 32 2 (MADC-3)
                    ADC- 430 1987 Digital 32 2 (MADC-3)
                    ADC- 530 1987 Digital 32 2 (MADC-3)
                    ADC- 730 1987 Digital 32 3 (MADC-3)
                    ADC-1130 1987 Digital 32 2 (MADC-3)
                    ADC-1160 1987 Digital 32 2 (MADC-3)
                    ADC-2130 1987 Digital 32 2 (MADC-3)
                    ADC-2160 1987 Digital 32 2 (MADC-3)
                    ADC-3160 1987 Digital 32 2 (MADC-3)
                    ADC-4300 1987 Digital 32 2 (ADC)
                    ADC-5300 1987 Digital 32 2 (ADC)
                    ADC-6300 1987 Digital 32 3 (ADC)
                    ADC-7300 1987 Digital 32 3 (ADC)
                    ADC-8300 1987 Digital 32 3 (ADC)
                    ADC-8350 1987 Digital 32 3 (ADC)
                    ADC-9300 1987 Digital 32 3 (ADC)
                    ADC- 222A 1988 Digital 32 2 (MADC-3)
                    ADC- 530A 1988 Digital 32 2 (MADC-3)
                    ADC-1140 1988 Digital 32 2 (MADC-3)
                    ADC-2140 1988 Digital 32 2 (MADC-3)
                    ADC-2160A 1988 Digital 32 2 (MADC-3)
                    ADC-3160A 1988 Digital 32 2 (MADC-3)
                    ADC-3600 1988 Digital 32 2 theatre console
                    ADC-430A 1988 Digital 32 2 (MADC-3)
                    Classic I -SC 1988 Digital 32 2 (ADC)
                    ADC-4900 1989 Digital 32 3 (ADC)
                    MDS- 45 1989 Digital 32 2 (MDS)
                    MDS- 50 1989 Digital 32 3 (MDS)
                    MDS- 51- S 1989 Digital 32 3 (MDS)
                    MDS- 75 1989 Digital 32 3 (MDS)
                    MDS- 85 1989 Digital 32 3 (MDS)
                    Classic I -W 1990 Digital 32 2 (MDS)
                    Classic I-W-SC 1990 Digital 32 2 (MDS)
                    MDS- 15 1990 Digital 32 2 (MDS)
                    MDS- 25 1990 Digital 32 2 (MDS)
                    MDS- 35 1990 Digital 32 2 (MDS)
                    MDS- 65 1990 Digital 32 3 (MDS)
                    MDS-TH III 1990 Digital 32 3 (MDS) Theatre
                    MDS-TH IIID 1990 Digital 32 3 (MDS) Theatre
                    ADC- 222 1991 Digital 32 2 (MADC-3)
                    MDS- 1 1991 Digital 32 2 (MDS)
                    MDS- 5 1991 Digital 32 2 (MDS)
                    MDS- 10 1991 Digital 32 2 (MDS)
                    MDS- 40- S 1991 Digital 32 3 (MDS)
                    MDS- 45- S 1991 Digital 32 2 (MDS)
                    MDS- 65- S 1991 Digital 32 3 (MDS)
                    MDS- 80- S 1991 Digital 32 4 (MDS)
                    MDS- 90 1991 Digital 32 4 (MDS)
                    MDS-TH II 1991 Digital 32 2 (MDS) Theatre
                    MDS-TH Plus 1991 Digital 32 3 (MDS) Theatre
                    MDS-TH Plus D 1991 Digital 32 3 (MDS) Theatre
                    MDS- 10X 1992 Digital 32 2 (MDS)
                    MDS- 38 1992 Digital 32 3 (MDS)
                    MDS- 70- S 1992 Digital 32 3 (MDS)
                    MDS- 93 1992 Digital 32 4 (MDS)
                    MDS- 85- S 1993 Digital 32 3 (MDS)
                    MDS- 95 1993 Digital 32 4 (MDS)
                    AP- 3 1994 Digital 32 2 Protege
                    AP- 4 1994 Digital 32 2 Protege
                    MDS- 2 1994 Digital 32 2 (MDS)
                    MDS- 11 1994 Digital 32 2 (MDS)
                    MDS- 16 1994 Digital 32 2 (MDS)
                    MDS- 26 1994 Digital 32 2 (MDS)
                    MDS- 30LDS 1994 Digital 32 2 (MDS)
                    MDS- 36 1994 Digital 32 2 (MDS)
                    MDS- 39 1994 Digital 32 3 (MDS)
                    MDS- 41- S 1994 Digital 32 3 (MDS)
                    MDS- 46 1994 Digital 32 2 (MDS)
                    MDS- 55 1994 Digital 32 2 (MDS)
                    MDS- 6 1994 Digital 32 2 (MDS)
                    MDS- 60 1994 Digital 32 3 (MDS)
                    MDS- 71- S 1994 Digital 32 3 (MDS)
                    MDS- 81- S 1994 Digital 32 4 (MDS)
                    MDS-212 1994 Digital 32 2 (MDS) Theatre
                    MDS-212D 1994 Digital 32 2 (MDS) Theatre (AGO version of above)
                    AP- 2 1995 Digital 32 2 Protege
                    AP- 7 1995 Digital 32 2 Protege
                    AP- 9 1995 Digital 32 3 Protege
                    MDS-312 1995 Digital 32 3 (MDS) Theatre
                    MDS-317 1995 Digital 32 3 (MDS) Theatre
                    MDS-317EX 1995 Digital 32 3 (same as MDS-317 + 2nd stoprail more unif.)
                    MDS-Artiste-III 1995 Digital 32 3 (MDS)
                    MDS-Positiv 1995 Digital 32 2 (MDS)
                    AP-12 1996 Digital 32 3 Protege
                    AP-20 1996 Digital 32 3 Protege
                    MDS- 8 1996 Digital 32 2 (MDS)
                    R350 1997 Digital 32 3 Renaissance
                    R370 1997 Digital 32 3 Renaissance
                    R450 1997 Digital 32 4 Renaissance
                    GW4 1998 Digital 32 4 Renaissance Theatre
                    GW319 1999 Digital 32 3 Renaissance Theatre
                    GW319EX 1999 Digital 32 3 Renaissance Theatre (year approximate)
                    R211 1999 Digital 32 2 Renaissance Theatre
                    R211D 1999 Digital 32 2 Renaissance Theatre (AGO version of R211)
                    R311 1999 Digital 32 3 Renaissance Theatre

                    Comment


                      #11
                      Dawg,

                      I would stay away from eBay, as most of the organs there have vastly inflated prices and you can't play or inspect the instrument before you buy it. There are also some REAL 'dogs' there. As found in one of my other postings, one of them was trying to sell organs he didn't even own! Craigslist and/or Kijiji if you live anywhere near Canada are great places to look. You can use searchtempest or similar sites to get around the one city at a time limitation of craigslist searches. Talk with organ techs, or visit the local Allen dealer. You never know what may lurk in one of their back rooms. If you are in the Midwest, I am working on a deal on a new organ and if it goes well, I will have a really sweet ADC2140 for a decent price, as I have TOO MANY ORGANS....according to the other half! smile.

                      Basically, do you home work and decide what you want. Read as much as you can so you are familiar with common found problems, or better yet, take along a friend who is knowlagable. Then with a little patience searching and some pocket change, you will end up with something nice, quite possibly for less than you were expecting.

                      WARNING! organcollectitus is very contagious, so you may want to get vaccinated against that. Have fun.

                      Comment


                        #12
                        I have created a spreadsheet of the list from searchinferu. It is posted here: https://1drv.ms/x/s!ArDV9gcksaC3jlJsq5nc2Nm7sRRj
                        It includes some of the newer allen organs, extra information, and some very rough price estimates and parameters.
                        It is sorted by number of manuals (most to least) then by year (newest to oldest).
                        A lot of the extra information is either assumed or extrapolated from pictures and spec sheets.
                        The prices shown are based on my assumptions. Feel free to adjust them to fit your reality.
                        Sam
                        Home: Allen ADC-4500 Church: Allen MDS-5
                        Files: Allen Tone Card (TC) Database, TC Info, TC Converter, TC Mixer, ADC TC SF2, and MOS TC SF2, ADC TC Cad/Rvt, MOS TC Cad/Rvt, Organ Database, Music Library, etc. PM for unlinked files.

                        Comment


                          #13
                          Originally posted by toodles View Post
                          The sequence of general families is as follows for their digital organs:

                          MOS I
                          MDC
                          MOS II
                          ADC
                          MADC
                          MDS

                          MOS I was the 1st digital series.

                          MOS II was a refinement but not very major changes.

                          MDC stands for Modified Digital Computers, probably the worst of the bunch. Built only for low cost and manufacturing ease. Lots of duplexing.

                          ADC: Allen Digital Computer; available in early (Models like ADC-4000, ADC-5000), middle, and late models (such as ADC4300, ADC 6300, etc.). The late models are very nice. These are full-cage organs.

                          MADC were modified versions of the ADC where a true cage was not employed. Models also used the ADC prefix, but were like: ADC-2100, 1100, 3100, and then ADC-3160, then ADC-3160A. Get an A version if you can, but they are all quite nice for smaller organs.

                          MDS: Master Design Series, starting from around 1990. These were the 1st Allens with full MIDI implementation. Earlier models had card readers, but later models dropped it.

                          Renaissance and Quantum followed.

                          If you go to the Allen website under Customer Support you can find the owner's manuals. They will tell you quite a bit about individual models. Look under "More Models" for these older organs.
                          I'll know to stay away from the MDC models,then! It's ADC,or later,and as long as it has self contained audio,...would prefer lower end MDS organs like MDS-5,MDS-6,or Protege AP-4 and up,though! What is the ADC-1100 llike?
                          Late 1980's Rodgers Essex 640

                          Comment


                            #14
                            Originally posted by searchinferu View Post
                            Note: The following is a general compilation of information from various sources. It may or may not be accurate and is being provided as a best-effort convenience. Any authoritative information should be obtained from the manufacturer.

                            The following is from Jan Girardot's Electronic Organ Reference List,
                            at http://www.lizardweb.com/E-organ_list_v.4_(DB)1.pdf reformatted for this document and sorted by year built.

                            0................................................. ................. 1970 Transistor 32 2 (console)
                            100 1971 Digital 32 2 (MOS-1)
                            200 1971 Digital 32 2 (MOS-1)
                            300 1971 Digital 32 2 (MOS-1)
                            600 1971 Digital 32 2 (MOS-1) (2-computer)
                            1500 1971 Digital 32 3 (MOS-1) (5-computer)
                            900 1972 Digital 32 3 (MOS-1) (3-computer)
                            902 1972 Digital 32 3 (MOS-1) (3-computer)
                            1200 1972 Digital 32 3 (MOS-1) (4-computer)
                            3300 1972 Digital 32 2 (MOS-1)
                            101 1973 Digital 32 2 (MOS-1)
                            102 1973 Digital 32 2 (MOS-1)
                            103 1973 Digital 32 2 (MOS-1)
                            120 1973 Digital 32 2 (MOS-1)
                            121 1973 Digital 32 2 (MOS-1)
                            122 1973 Digital 32 2 (MOS-1)
                            123 1973 Digital 32 2 (MOS-1)
                            201 1973 Digital 32 2 (MOS-1)
                            301 1973 Digital 32 2 (MOS-1)
                            601 1973 Digital 32 2 (MOS-1) (2-computer)
                            602 1973 Digital 32 2 (MOS-1) (2-computer)
                            620 1973 Digital 32 2 (MOS-1)
                            1800 1973 Digital 32 2 (MOS-1)
                            2100 1973 Digital 32 2 (MOS-1)
                            182 1974 Digital 32 2 (MOS-1)
                            202 1974 Digital 32 2 (MOS-1)
                            631 1974 Digital 32 3 (MOS-1)
                            3600 1974 Digital 32 2 (MOS-1)
                            416 1975 Digital 32 2 (MOS-1) Theatre
                            420 1975 Digital 32 2 (MOS-1)
                            424 1975 Digital 32 2 (MOS-1)
                            603 1975 Digital 32 2 (MOS-1) (2-computer)
                            632 1975 Digital 32 3 (MOS-1)
                            903 1975 Digital 32 3 (MOS-1) (3-computer)
                            920 1975 Digital 32 3 (MOS-1) Theatre
                            1203 1975 Digital 32 3 (MOS-1) (4-computer)
                            381 1976 Digital 32 2 (MOS-1)
                            421 1976 Digital 32 2 (MOS-1) Theatre
                            422 1976 Digital 32 2 (MOS-1) Theatre
                            425 1976 Digital 32 2 (MOS-1) Theatre Music Scene
                            460 1976 Digital 32 2 (MOS-1) Theatre
                            1220 1976 Digital 32 2 (MOS-1)
                            2700 1976 Digital 32 2 (MOS-1)
                            282 1977 Digital 32 2 (MOS-1)
                            417 1977 Digital 32 2 (MOS-1) Theatre
                            423 1977 Digital 32 2 (MOS-1)
                            431 1977 Digital 32 2 Theatre
                            432 1977 Digital 32 2 (MOS-1) Theatre
                            435 1977 Digital 32 2 (MOS-1) Theatre Music Scene
                            461 1977 Digital 32 2 (MOS-1) Theatre
                            2400 1977 Digital 32 2 (MOS-1)
                            MDC-10 1977 Digital 13 2 (MDC-1) Theatre Compact (spinet)
                            MDC-11 1977 Digital 13 2 (MDC-1) Theatre Compact (spinet)
                            MDC-20 1977 Digital 32 2 (MDC-2)Classic 20
                            MDC-30 1977 Digital 32 2 (MDC-1) Theatre 30
                            MDC-31 1977 Digital 32 2 (MDC-1) Theatre 31
                            203 1978 Digital 32 2 (MOS-1)
                            683 1978 Digital 32 3 (MOS-1)
                            433 1979 Digital 32 2 (MOS-1) Theatre
                            436 1979 Digital 32 2 (MOS-1) Theatre Music Scene
                            462 1979 Digital 32 2 (MOS-1) Theatre
                            621 1979 Digital 32 2 (MOS-1)
                            124 1981 Digital 32 2 (MOS-2)
                            125 1981 Digital 32 2 (MOS-2)
                            224 1981 Digital 32 2 (MOS-2)
                            225 1981 Digital 32 2 (MOS-2)
                            305 1981 Digital 32 2 (MOS-2)
                            453 1981 Digital 32 2 (MOS-2) Theatre
                            456 1981 Digital 32 2 (MOS-2) Theatre Music Scene
                            465 1981 Digital 32 2 (MOS-2) Theatre
                            505 1981 Digital 32 2 (MOS-2) (2-computer)
                            665 1981 Digital 32 3 (MOS-2) (2-computer)
                            675 1981 Digital 32 3 (MOS-2) Theatre (2-computer)
                            705 1981 Digital 32 2 (MOS-2) Theatre (3-computer)
                            805 1981 Digital 32 3 (MOS-2) (3-computer)
                            965 1981 Digital 32 3 (MOS-2) (3-computer)
                            1105 1981 Digital 32 2 (MOS-2) (4-computer)
                            1403 1981 Digital 32 2 (MOS-2) (4-computer)
                            1405 1981 Digital 32 2 (MOS-2) (6-computer)
                            MDC-12 1981 Digital 13 2 (MDC-1) Theatre Compact (spinet)
                            MDC-22 1981 Digital 32 2 (MDC-1)Classic 22
                            MDC-32 1981 Digital 32 2 (MDC-2) Theatre 32
                            MDC-42 1981 Digital 32 2 (MDC-1)
                            MDC-52 1981 Digital 32 2 (MDC-1)
                            MDC-15 1982 Digital 32 2 (MDC-1)
                            ADC-1000 1983 Digital 32 2 (ADC)
                            ADC-1010 1983 Digital 32 2 (ADC)
                            ADC-2000 1983 Digital 32 2 (ADC)
                            ADC-2010 1983 Digital 32 2 (ADC)
                            ADC-3000 1983 Digital 32 2 (ADC)
                            ADC-3500 1983 Digital 32 2 (ADC) Theatre
                            ADC-4000 1983 Digital 32 2 (ADC)
                            ADC-4500 1983 Digital 32 3 (ADC) Theatre
                            ADC-4600 1983 Digital 32 3 3-manual theatre console
                            ADC-5000 1983 Digital 32 2 (ADC)
                            ADC-5400 1983 Digital 32 3 (ADC)
                            ADC-6000 1983 Digital 32 3 (ADC)
                            ADC-6500 1983 Digital 32 3 (ADC)
                            ADC-7000 1983 Digital 32 3 (ADC)
                            ADC-8000 1983 Digital 32 3 (ADC)
                            ADC-9000 1983 Digital 32 3 (ADC)
                            ADC- 220 1984 Digital 32 2 (MADC-1)
                            ADC- 320 1984 Digital 32 2 (MADC-1)
                            ADC- 420 1984 Digital 32 2 (MADC-1)
                            ADC- 520 1984 Digital 32 2 (MADC-1)
                            ADC- 720 1984 Digital 32 3 (MADC-1)
                            ADC-4100 1984 Digital 32 2 (ADC)
                            ADC- 710 1985 Digital 32 2 (MADC-2) Spectrum
                            ADC-1100 1985 Digital 32 2 (MADC-2)
                            ADC-1110 1985 Digital 32 2 (MADC-2)
                            ADC-2100 1985 Digital 32 2 (MADC-2)
                            ADC-2110 1985 Digital 32 2 (MADC-2)
                            ADC-3100 1985 Digital 32 2 (MADC-2)
                            ADC-6800 1986 Digital 32 3 (ADC)
                            Classic I 1986 Digital 32 2 (ADC)
                            Classic II 1986 Digital 32 2 (ADC)
                            ADC- 221 1987 Digital 32 2 (MADC-3)
                            ADC- 430 1987 Digital 32 2 (MADC-3)
                            ADC- 530 1987 Digital 32 2 (MADC-3)
                            ADC- 730 1987 Digital 32 3 (MADC-3)
                            ADC-1130 1987 Digital 32 2 (MADC-3)
                            ADC-1160 1987 Digital 32 2 (MADC-3)
                            ADC-2130 1987 Digital 32 2 (MADC-3)
                            ADC-2160 1987 Digital 32 2 (MADC-3)
                            ADC-3160 1987 Digital 32 2 (MADC-3)
                            ADC-4300 1987 Digital 32 2 (ADC)
                            ADC-5300 1987 Digital 32 2 (ADC)
                            ADC-6300 1987 Digital 32 3 (ADC)
                            ADC-7300 1987 Digital 32 3 (ADC)
                            ADC-8300 1987 Digital 32 3 (ADC)
                            ADC-8350 1987 Digital 32 3 (ADC)
                            ADC-9300 1987 Digital 32 3 (ADC)
                            ADC- 222A 1988 Digital 32 2 (MADC-3)
                            ADC- 530A 1988 Digital 32 2 (MADC-3)
                            ADC-1140 1988 Digital 32 2 (MADC-3)
                            ADC-2140 1988 Digital 32 2 (MADC-3)
                            ADC-2160A 1988 Digital 32 2 (MADC-3)
                            ADC-3160A 1988 Digital 32 2 (MADC-3)
                            ADC-3600 1988 Digital 32 2 theatre console
                            ADC-430A 1988 Digital 32 2 (MADC-3)
                            Classic I -SC 1988 Digital 32 2 (ADC)
                            ADC-4900 1989 Digital 32 3 (ADC)
                            MDS- 45 1989 Digital 32 2 (MDS)
                            MDS- 50 1989 Digital 32 3 (MDS)
                            MDS- 51- S 1989 Digital 32 3 (MDS)
                            MDS- 75 1989 Digital 32 3 (MDS)
                            MDS- 85 1989 Digital 32 3 (MDS)
                            Classic I -W 1990 Digital 32 2 (MDS)
                            Classic I-W-SC 1990 Digital 32 2 (MDS)
                            MDS- 15 1990 Digital 32 2 (MDS)
                            MDS- 25 1990 Digital 32 2 (MDS)
                            MDS- 35 1990 Digital 32 2 (MDS)
                            MDS- 65 1990 Digital 32 3 (MDS)
                            MDS-TH III 1990 Digital 32 3 (MDS) Theatre
                            MDS-TH IIID 1990 Digital 32 3 (MDS) Theatre
                            ADC- 222 1991 Digital 32 2 (MADC-3)
                            MDS- 1 1991 Digital 32 2 (MDS)
                            MDS- 5 1991 Digital 32 2 (MDS)
                            MDS- 10 1991 Digital 32 2 (MDS)
                            MDS- 40- S 1991 Digital 32 3 (MDS)
                            MDS- 45- S 1991 Digital 32 2 (MDS)
                            MDS- 65- S 1991 Digital 32 3 (MDS)
                            MDS- 80- S 1991 Digital 32 4 (MDS)
                            MDS- 90 1991 Digital 32 4 (MDS)
                            MDS-TH II 1991 Digital 32 2 (MDS) Theatre
                            MDS-TH Plus 1991 Digital 32 3 (MDS) Theatre
                            MDS-TH Plus D 1991 Digital 32 3 (MDS) Theatre
                            MDS- 10X 1992 Digital 32 2 (MDS)
                            MDS- 38 1992 Digital 32 3 (MDS)
                            MDS- 70- S 1992 Digital 32 3 (MDS)
                            MDS- 93 1992 Digital 32 4 (MDS)
                            MDS- 85- S 1993 Digital 32 3 (MDS)
                            MDS- 95 1993 Digital 32 4 (MDS)
                            AP- 3 1994 Digital 32 2 Protege
                            AP- 4 1994 Digital 32 2 Protege
                            MDS- 2 1994 Digital 32 2 (MDS)
                            MDS- 11 1994 Digital 32 2 (MDS)
                            MDS- 16 1994 Digital 32 2 (MDS)
                            MDS- 26 1994 Digital 32 2 (MDS)
                            MDS- 30LDS 1994 Digital 32 2 (MDS)
                            MDS- 36 1994 Digital 32 2 (MDS)
                            MDS- 39 1994 Digital 32 3 (MDS)
                            MDS- 41- S 1994 Digital 32 3 (MDS)
                            MDS- 46 1994 Digital 32 2 (MDS)
                            MDS- 55 1994 Digital 32 2 (MDS)
                            MDS- 6 1994 Digital 32 2 (MDS)
                            MDS- 60 1994 Digital 32 3 (MDS)
                            MDS- 71- S 1994 Digital 32 3 (MDS)
                            MDS- 81- S 1994 Digital 32 4 (MDS)
                            MDS-212 1994 Digital 32 2 (MDS) Theatre
                            MDS-212D 1994 Digital 32 2 (MDS) Theatre (AGO version of above)
                            AP- 2 1995 Digital 32 2 Protege
                            AP- 7 1995 Digital 32 2 Protege
                            AP- 9 1995 Digital 32 3 Protege
                            MDS-312 1995 Digital 32 3 (MDS) Theatre
                            MDS-317 1995 Digital 32 3 (MDS) Theatre
                            MDS-317EX 1995 Digital 32 3 (same as MDS-317 + 2nd stoprail more unif.)
                            MDS-Artiste-III 1995 Digital 32 3 (MDS)
                            MDS-Positiv 1995 Digital 32 2 (MDS)
                            AP-12 1996 Digital 32 3 Protege
                            AP-20 1996 Digital 32 3 Protege
                            MDS- 8 1996 Digital 32 2 (MDS)
                            R350 1997 Digital 32 3 Renaissance
                            R370 1997 Digital 32 3 Renaissance
                            R450 1997 Digital 32 4 Renaissance
                            GW4 1998 Digital 32 4 Renaissance Theatre
                            GW319 1999 Digital 32 3 Renaissance Theatre
                            GW319EX 1999 Digital 32 3 Renaissance Theatre (year approximate)
                            R211 1999 Digital 32 2 Renaissance Theatre
                            R211D 1999 Digital 32 2 Renaissance Theatre (AGO version of R211)
                            R311 1999 Digital 32 3 Renaissance Theatre
                            Wow,..that's quite a list!
                            Late 1980's Rodgers Essex 640

                            Comment


                              #15
                              According to the list, an Allen 224 was a 2-manual MOS-2 instrument with AGO pedals and 22 pistons. That model was introduced in 1981. I'm not sure what the "RTC" indicated (Tone Card Reader?).

                              David.

                              Comment

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