[sdiy] Compressor / Limiter Circuit for Spring Reverb?

[Coriander V. Pines]

Rod Elliot has some compressor/limiter circuits meant for spring reverbs that might be useful: https://sound-au.com/articles/reverb.htm#s5

Coriander

On Fri, Apr 3, 2026, at 07:53, mark verbos via Synth-diy wrote:
> Looks like Langomes is unresponsive. I can’t help noticing the similarity when I put a Urei BL-40 schematic next to it. The “Peak Program Amplifier” which legend says is 1176-ish (sorta I have 2 units here). It’s just the sidechain, in the Urei’s case that’s a dual opamp and a couple NPNs, some passives. 
> 
> Mark
> 
> 
> 
> 
> 
> 
>> On Apr 3, 2026, at 12:41, Tim Cockram via Synth-diy <synth-diy at synth-diy.org> wrote:
>> 
>> Hi,
>> 
>> Have you tried Iangomes here https://gearspace.com/board/geekzone/1312463-orban-111b-limiter-module.html  ?
>> 
>> tc
>> 
 <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
>> Virus-free.www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
 <x-msg://1/#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>> 
>> On Thu, 2 Apr 2026 at 15:56, James Coplin <james at ticalun.net> wrote:
>>> 
>>> I have an Orban 111b here that I loved but the proprietary and epoxy potted limiter module is bad and I've given up hope of someone figuring it out or being able to de-pot it. 
>>> 
>>> So, I was wondering about just putting a different compressor / limiter circuit in there just to have a working spring reverb even if it will no longer be the same. Anyone have suggestions for a stereo compressor / limiter circuit that might suitable? Because it also has impossible to find concentric pots that need replacing I was going to make a new front panel in any case.  
>>> 
>>> James R Coplin
>>> ________________________________________________________
>>> This is the Synth-diy mailing list
>>> Submit email to: Synth-diy at synth-diy.org
>>> View archive at: https://synth-diy.org/pipermail/synth-diy/
>>> Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy
>>> Selling or trading? Use marketplace at synth-diy.org
>> ________________________________________________________
>> This is the Synth-diy mailing list
>> Submit email to: Synth-diy at synth-diy.org
>> View archive at: https://synth-diy.org/pipermail/synth-diy/
>> Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy
>> Selling or trading? Use marketplace at synth-diy.org
> ________________________________________________________
> This is the Synth-diy mailing list
> Submit email to: Synth-diy at synth-diy.org
> View archive at: https://synth-diy.org/pipermail/synth-diy/
> Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20260403/f835e61f/attachment.htm>