Author Topic: some questions around the Belton BTDR-3H  (Read 3706 times)


some questions around the Belton BTDR-3H
« on: October 05, 2016, 10:34:28 PM »
Hi Everybody,

got my Belton BTDR-3H running, worked kind of right away :-)
Still some questions:

a) you can adjust the decay time with a stereo 10k linear pot
I could not find any....
Can you tell me where I can buy those?

b) I want to have a swellling (tremolo) on the reverb signal only.
Is there an easy way to add that?

c) are there any alternatives to Belton Reverb Bricks (that include adjustable decay)?
I could not find any chips to buy like from Lexicon. (I do like the Polara Pedal though)
Im looking for high end rather than cheap.

d) my favorite reverb pedal is a GLab DR-3. Does anybody know which chip this one uses?

Best regards,



Re: some questions around the Belton BTDR-3H
« Reply #1 on: October 05, 2016, 11:15:24 PM »
A) build your own clone has some dual gang pots, including a b10k.

B) Not sure, look up a simple trem design and see if you can't stick it after the brick, before the mixer (assuming the mixer isn't in the brick)

C) I like the polara too; enough to not have bothered trying to DIY my own since it wouldn't be as feature-packed as that little digitech.

D) maybe someone else can help you with this one too.

I'm not much help, but I figured I'd at least add what I can (which is pretty much just where to source dual gang pots)
Dave's not here, man

On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio
 - Hunter S. Thompson


Re: some questions around the Belton BTDR-3H
« Reply #2 on: October 06, 2016, 03:00:47 PM »
To add to point A, you can use 2 pots (although the most useful effect seems mostly to be when they are of similar resistance).
Also, if you want more depth, you can use a bigger pot - I recommend a log taper 100k dual-gang depth pot.

B - yes, this would be relatively easy. Splice your favorite tremolo between the input buffer and the BTDR-3 input.

C - you could look into the FV-1. It is more work to implement, but much more versatile.

D - no idea, but it claims to be analog, and if this is really true, then it must use BBD's.
I'm a refugee of the great dropbox purge of '17.
Project details (schematics, layouts, etc) are slowly being added here:


Re: some questions around the Belton BTDR-3H
« Reply #3 on: October 06, 2016, 04:59:38 PM »
Thank you very much guys.
I found a tremolo circuit that looks pretty close to a Fender Blackface one.

byoc has the dual 10K available and I ordered a couple :-)

Thanks for the Spin FV-1 info.
Obviously this one is pretty wide spead, several vendors. I wonder, why I did not find that before or I was probably afraid of the SMD. Just saw that there are adapters available :-)

What are BBDs??
Any other hints / info on analog Reverb?