|Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
||Thread Tools||Search this Thread|
|29th March 2010, 12:52 AM||#1|
Join Date: Sep 2003
Location: Melbourne, Australia
Fixing the dreaded power up/down thump!
The one issue that most drives me nuts is that dreaded thump when the system powers up and down. I'm looking for a robust solution. The main culprit is a studio mastering process I run full range - Behringer Ultracurve DEQ2496. The chain looks like this:
DVD > preamp (ESP) + P05 power supply > Behringer Ultracurve DEQ2496 > Behringer Ultradrive DCX2496 > power amps:
Behringer A500 (studio power amp)
Behringer Europower EP2500
Rythmik Plate amps
I use slave power up switching. So there is an old VCR I don't use that has a remote that powers up the whole system.
The DSE is fine as it has relays. None of the other amps have relays. The main problem is powering down. Ultradrive is a bit more well behaved so has reduced the problem slightly without removing it.
Two options I won't consider a solution:
1. Leaving things on
2. A manual power up/down sequence
I did consider power strips with power sequencing but that's $800 for the cheapest I could find. That breaks down when there is a power failure, so even that is not a fully robust solution. Even just a brief interruption.
What I'd like to do is add one or a number of relay circuits. As I see it, I could do this for the last source in the chain - Ultradrive, or I could just do it for every power amp. Ultradrive already has relays, as does Ultracurve but for some reason it doesn't get all the way there.
My question for both possible solutions:
Can the relay circuits be added externally to existing components? I'm asking this for both line level and power amp level. I've looked at
Project 104 - Preamp/ crossover muting circuit
Soft-Start Circuit For Power Amps
Loudspeaker Protection and Muting
Is it a simple matter of having an external power supply then hooking up the relay to the ouputs of the device in question?
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Help fixing Crown power amplifier||BlackUnikorn||Solid State||22||9th August 2012 06:14 PM|
|The dreaded impedance thingie....||Lostcause||Everything Else||23||22nd July 2006 12:08 PM|
|the dreaded c word....(crossovers)||xstephanx||Full Range||6||19th June 2006 02:55 PM|
|Power off thump (Korsun)||3Dgeek||Solid State||0||13th November 2005 09:25 PM|
|Fixing a Monster Power HTS3500||FrankDIY||Parts||0||20th April 2004 07:24 PM|
|New To Site?||Need Help?|