Information On 600 series Gulbransen Organs

[Guest]

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Hi All,</P>


I wonder can somebody please give some information on the Gulbransen 600 series organs. I was recently looking at organ stuff on You Tube and came accross 4 entries from a guy playing a 600 series Gulbransen organ. I have to say I was really taken aback by the quality of the sounds this organ produced. It had tibia's that to my ears sounded like tibia's, not the dull flutes so many so-called electronic theatre organs produce. Indeed many of the voices sounded quite pipe like. Sadly Gulbransen organs are now few and far between particularly here in the UK, though one does occasionally see one for sale on ebay. However I intend to keep my ears and eye open in the hope that one day I will find a 600 series organ for sale. In the mean time I like to gather what information I can on this series or organs. I know many of Gulbransen's organs had two set of oscillators, one for the main and one for the tibias. I assume that was true of the 600 series. I would be much obliged for any information at all on this series. Things like what dates they were made, any information on the design, and if possible a stop list. Many thanks in advance</P>


Undermaris.</P></FONT>

[geoelectro]

Re: Information On 600 series Gulbransen Organs



The 600 series has a single tone generator that is a divider type. (Top Octave Synthesizer) Gulbransen had very good filters to convert the generated square waves into tibias and sines. They had some of the better sounding flutes of any organ. Hammond probable spent more on their "flute filters" in the later models to maintain their "Hammond sound" of sine waves. If Hammond had the more accurate sine filters, Gulbransen was certainly second.</p>

When comparing divider organs, the filters are the most important thing. The more money spent on the quality and number of filters, the better the organ sounded. Gulbransens have great sound!</p>

They did have a separate generator for the pedals with two note polyphony. This is a complicated circuit so when looking at a potentiol purchase, make sure the pedals work!</p>

George
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[jimmywilliams]

Re: Information On 600 series Gulbransen Organs



As George stated, while this organ did not have the "classic" Gulbransen TIOs generator set for the tibias, the flute filters came very close. This organ has 4-channel internal sound (main C, main C#, Pedal/rhythm, Tibia).It has piano/harpsichord and a brass synthesizer, which are also split into C/C# channels and piped into the "main" sound circuits. It also has percussive effects. The internal Tibia Leslie was 2 speed, but is of the "rotosonic" type as this organ was designed with theater playng in mind (produces a more pronounced "throb" than a stationary firing into a spinning rotor). It was also equiped to hook up an external cabinet if needed. You can only play 2 pedals at a time as previously stated by George.This is probably OK for pop/theater pieces,butMAY be a problem with some of the more advanced classical works. If you are looking for a great sounding full featured theater style organfor areasonable price these days,the 600is a good deal. I've seen these go very cheap. I would have wanted one myself, but I needed AGO so my only Gulbransenoption was the much older Model D. I saw the videos on YouTube you are talking about and was very impressed.</P>


-jim</P>

[Guest]

Re: Information On 600 series Gulbransen Organs



Hi Guys.</P>


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Thanks for the prompt replies to my questions. I now know a little about the Gulbransen 600 series. I will continue to search the internet to see what else I can find out about them. I'd like to think I will own one, one day. Though I have to admit I have never seen any Gulbransen organ in my life, they are just so rare here in the UK. I have seen a Gulbransen President for sale on ebay, but that was some years ago. Anyway thanks again for your help, it's much appreciated.</P>
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undermaris</P></FONT>

[Guest]

Re: Information On 600 series Gulbransen Organs



Hi Guys.</P>


<FONT size=2></P>


Thanks for the prompt replies to my questions. I now know a little about the Gulbransen 600 series. I will continue to search the internet to see what else I can find out about them. I'd like to think I will own one, one day. Though I have to admit I have never seen any Gulbransen organ in my life, they are just so rare here in the UK. I have seen a Gulbransen President for sale on ebay, but that was some years ago. Anyway thanks again for your help, it's much appreciated.</P>
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undermaris </P>


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[Guest]

Brochure for Gulbransen 600 series.

Here is a brochure of this organ (which you may have by now since you're last post for this was in 2008). I understand how you feel about this instrument - magnificent tibia's and some very good reed stops as well. I'd also be happy to find one of these or a Baldwin Cinema II. I'm in Australia and still looking. Hope you've been able to acquire you're dream organ.

P.S. Apologies but the file I was trying to upload for you is to large and exceeds the limits of this forum. If you would still like a brochure of the Gulbransen 600 series organ please leave your email address so I can forward it to you.