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490. Tweaks? Hacks? Mods?

490. Tweaks? Hacks? Mods?

2003-08-05 by Aaron Day

Hello all-

I just finished my 490. A fun kit to build and a really cool sounding 
filter.

But the resonance thing has got me going---mine flips at about "3.5"

I have read the archives about replacement resistors but was wondering 
if there was a consensus reached about particular values and their 
behaviors. I thought I'd ask before I put another in.

Also, has anybody hacked this unit? I don't need 3 inputs and was 
wondering if anybody had added any features--an amp on the input 
etc--and slapped another pot where one of the inputs should be.

Were there any mods done by the factory of the 904a when it was in 
production?

Best,

ad





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Re: [motm] 490. Tweaks? Hacks? Mods?

2003-08-06 by Paul Schreiber

For resonance delayed, try 68K in place of the 39K R29.

Paul S.

----- Original Message ----- 
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From: "Aaron Day" <aaron@...>
To: <motm@yahoogroups.com>
Sent: Tuesday, August 05, 2003 5:47 PM
Subject: [motm] 490. Tweaks? Hacks? Mods?


> Hello all-
>
> I just finished my 490. A fun kit to build and a really cool sounding
> filter.
>
> But the resonance thing has got me going---mine flips at about "3.5"
>
> I have read the archives about replacement resistors but was wondering
> if there was a consensus reached about particular values and their
> behaviors. I thought I'd ask before I put another in.
>
> Also, has anybody hacked this unit? I don't need 3 inputs and was
> wondering if anybody had added any features--an amp on the input
> etc--and slapped another pot where one of the inputs should be.
>
> Were there any mods done by the factory of the 904a when it was in
> production?
>
> Best,
>
> ad
>
>
>
>
>
> _____________________
> Receive-Transmit
> Marienburgerstr. 33
> 10405 Berlin
> Germany
> _____________________
> www.receive-transmit.com
> +49 030.231.80965
> +49 179.750.1854
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>

Re: [motm] 490. Tweaks? Hacks? Mods?

2003-08-06 by alt-mode

>
>Were there any mods done by the factory of the 904a when it was in
>production?

The only factory mod I have ever seen on a 904a is a bypass switch which is 
kinda handy at times.

         Eric

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