wait 30 seconds before turning on amp?

denti alligator · 4151

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Offline denti alligator

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on: December 12, 2011, 01:42:36 PM
I just installed the C4S kit. At the end of the instructions there is this note:

"Always turn on Seduction and wait 30 seconds before turning on amp or preamp."

Why? What will happen if I don't?

- Sam

Rega P3-24 (w/AT 150MLX) w/Groovetracer upgrades / Eros II / FLAC >J.River >DSD256 >Gustard X20 / Moreplay > Stereomour II / Klipsch Forte II w/Crites upgrades / C4S S.E.X. 2.0 +Nickel MQ Iron / Speedball Crack / Sennheiser HD600 w/Cardas cable

Offline Grainger49

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Reply #1 on: December 12, 2011, 02:10:47 PM
There will be a thump.  As the circuit powers up a little DC leaks through the output cap.  It is drained by the resistors on the output RCA jacks.  If your preamp or integrated amp is on the DC produces a thump.  It can be bad depending on the amp and the speakers.


Offline matthewmckay

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Reply #2 on: December 12, 2011, 02:54:59 PM
mine just makes a baby "thud" in the speakers...

which is very, very different from the horrific "SNAP" that
the quickie makes when it gets turned off/on in the wrong order.


Offline Paul Joppa

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Reply #3 on: December 12, 2011, 04:02:22 PM
Seduction makes different, and often very loud, noises if it as the C4S upgrade.

Before anyone asks ... :^) ... of course we could put time delay relays for muting in, But it would raise the cost quite a bit, and entry-level high end is very important to us.  Just sayin' ...

Paul Joppa

Offline Grainger49

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Reply #4 on: December 13, 2011, 01:31:26 AM
It is much cheaper to turn them on and off in sequence.  There should be a FAQ Thread sticky in the general folder that addresses these questions. Shoot, I'll start one in my folder and get David to sticky it.
« Last Edit: April 01, 2014, 03:02:17 AM by Grainger49 »


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