[sdiy] Tr-808 resistor value

Sat Aug 22 20:07:45 CEST 2026

Well that seems like a consensus that it's 220k.  Thanks to all those who 
replied.

The 220k value just seemed a little odd to me at first...  Given that this 
matches the value of R319 in the Claves voice output, it would seem like 
they could have just used a single 220k resistor after the voice selection 
changeover switch.  Essentially in series with C125 and R326, or even 
combined with R326 to save the cost of one (or two) resistors.

I know that the value of R324 mostly just alters the volume of the Rimshot 
sound relative to the others, but it also alters the cut-off frequency of a 
high-pass filter formed in combination with R326 and C125.  This is the 
reason why I wanted to know the correct value.

I'll go with 220k in the absence of any evidence to the contrary!

-Richie,

-----Original Message----- 
From: Chromatest J. Pantsmaker via Synth-diy
Sent: Saturday, August 8, 2026 10:01 PM
To: synth-diy at synth-diy.org
Cc: rburnett at richieburnett.co.uk
Subject: Re: [sdiy] Tr-808 resistor value

It makes sense that it would be the same as R319, which is 220K.

-------- Original Message --------
On Saturday, 08/08/26 at 13:04 Todd Sines via Synth-diy 
<synth-diy at synth-diy.org> wrote:

The RE-808 is supposed to be a 1:1 clone, it also is 220k. Sorry for not 
opening mine up but pretty certain that is it.

Todd

> On Aug 8, 2026, at 3:55 PM, Pete Hartman via Synth-diy 
> <synth-diy at synth-diy.org> wrote:
>
> The Yocto is an 808 clone of sorts, it has that resistor marked as 220K
>
> Can't speak for the OG.
>
> Pete
>
>> On Sat, Aug 8, 2026 at 2:34 PM <rburnett at richieburnett.co.uk> wrote:
>>
>> Does anyone know the value of R324 in the Rimshot voicing circuit of
>> Roland's TR-808 drum machine?
>>
>> Seemed like a good day to ask ;-)
>>
>> -Richie,
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