What's the purpose of the scrim cloth...

[Guest]

...On the lower rotating drum?

Is it just aesthetics? Acoustics?

I noticed (Leslie 147) last night that when the Leslie is on Chorale, the system is practically silent. When I flip the switch to Tremolo, I though there was a very subtle hum coming from the cabinet but it seems that is sound produced from the high RPM of the drum.(wind, belt, etc.)

Thanks for your input.

[Hammond101]

Re: What's the purpose of the scrim cloth...



[quote user="bubus"]...On the lower rotating drum?

Is it just aesthetics? Acoustics?

.[/quote]</P>


The underwear on the lower rotor reduces wind noise. They do stir up a bit of air on high speed. When I switch to high speed I usually have a good signal to noise ratio........Swell pedal nearly floored so I don't notice it. It can be problematic when recording.</P>


H101</P>

[Guest]

Re: What's the purpose of the scrim cloth...



Hey, thanks for your input.</p>

</p>

I have another question: I would like the organ to be silent when I full depress the swell pedal (M111) ; is that adjusted via the cutoff screw on the back of the organ? (pedal cutoff). If yes, in which direction should it be = clock or counterclock wise?</p>

</p>

Thanks</p>

[Guest]

Re: What's the purpose of the scrim cloth...

[quote user="bubus"]


...is that adjusted via the cutoff screw on the back of the organ? (pedal cutoff). If yes, in which direction should it be = clock or counterclock wise?</P>
<P mce_keep="true">[/quote]</P>
<P mce_keep="true">No. Pedal cut-off is for the bass pedals. </P>
<P mce_keep="true">If youwant thattube crunch / growl you mentioned in earlier posts, you really can't expect noiseless operation when the expression pedal is at full. Some noise is just an artifact of over-driving the organ amp.</P>
<P mce_keep="true">I bet if you tried setting the 147's load switch to 16 ohms things would get quieter though.</P>

[Guest]

Re: What's the purpose of the scrim cloth...



Hey Bones, sorry I mislead you with my question. I want to move the volume pedal upwards (like when you lower the volume) to it's max position (heel to the floor) and get 0, ZIP, NADA sound from the organ, meaning no volume. </p>

</p>

Regarding the load resistor position that you suggested, Chris Clifton from Hammondzone recommended 8 Ohms and now that you said 16, I'm more confused than ever.</p>

[Guest]

Re: What's the purpose of the scrim cloth...



I've never adjusted mine - but I think there's and adjustment on the big squarecapacitor the expression pedal assembly attaches to. You can try turning that down. I don't think you'll eliminate all noise though. </P>


Sorry for creating confusion the on the load resistor setting. If it sounds right at 8, leave it there.</P>

[Hammond101]

Re: What's the purpose of the scrim cloth...



You can not adjust for zero volume. If you try you will not get enough poop out of it on the top end. It should be fairly quiet at a minimum swell pedal setting however. You can't here my M101 unless you stick your ear in the speakers at this setting with no notes being played. I would not try to adjust the trimmer cap or the pedal linkage for zero volume.</P>


As for the load resistor setting open would be correct if the connector kit has a load resistor already in it. The 53-1 for muti-channel organs is like this for example. They are typically mounted in the connector box if you go looking for it. An AO-29 amp wants to see an 8 ohm load so I don't know beans about the 16 ohm suggestions. I suppose in some instances it may quiet a noisey someting orda other.</P>


H101</P>