[sdiy] Delays and companders

Tim Ressel timr at circuitabbey.com
Mon Mar 4 19:52:22 CET 2019


I just heard from That Semi: It is the 4301 that is EOL. The 4305 is the 
replacement.

--tr


On 3/4/2019 10:32 AM, ulfur hansson wrote:
> 4305's from THAT have been marked EoL :(
>
> mán., 4. mar. 2019 kl. 13:10 skrifaði Tim Ressel 
> <timr at circuitabbey.com <mailto:timr at circuitabbey.com>>:
>
>     Hi,
>
>     In making a BBD delay often a compander is used to reduce noise. One
>     schematic had a clever circuit that used one rms-dc block to run both
>     the compressor and expander VCAs. This would make sense in a
>     non-delay
>     circuit. But in a delay where the output is not time aligned with the
>     input, is it the right thing to do? It seems to me you want
>     completely
>     separate compressor and expander circuits with their own rms-dc
>     blocks.
>     Say a pair of 4305s from That Semi. Or am I in the weeds here?
>
>     -- 
>     --Tim Ressel
>     Circuit Abbey
>     timr at circuitabbey.com <mailto:timr at circuitabbey.com>
>
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-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com

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