MR2 Roadster Owners Club

The Workshop => Audio / Security / Electrical => Topic started by: Anonymous on April 11, 2004, 12:24

Title: switching an amp on and off?
Post by: Anonymous on April 11, 2004, 12:24
is there any gadget which will stop the thump noise produced buy switching the amp on and off or should this noise not happen at all.

p.s. currently using a cheapo splx amp for a test run of my custom system but it will be replaced with a better amp once/if fully working
Title: Re: switching an amp on and off?
Post by: Tem on April 11, 2004, 12:43
Quote from: "adz648"is there any gadget which will stop the thump noise produced buy switching the amp on and off or should this noise not happen at all.

Cheapos usually make that...and it's "easy" to fix. You need to put relays on the amp outputs and turn them on a second or so after the amp and turn them off a second or so before the amp. That way the thump never reaches the speakers..

Up to you, if you think it's worth the trouble  s;) ;) s;)
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Post by: Anonymous on April 11, 2004, 15:37
chears tem

i might go for it as part of the install, when i get a proper amp.
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Post by: Tem on April 11, 2004, 16:50
Quote from: "adz648"i might go for it as part of the install, when i get a proper amp.

You probably don't have to do that with a good amp  s;) ;) s;)
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Post by: Anonymous on April 11, 2004, 18:31
shouldnt get a pop sound or thud when the amps turn on !!

means that the MOSFET's of the amp are BUSTED !!!!!!!!
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Post by: Tem on April 11, 2004, 18:38
Quote from: "Buster"shouldnt get a pop sound or thud when the amps turn on !!

means that the MOSFET's of the amp are BUSTED !!!!!!!!

Many cheapos do that...even when they are ok  s:? :? s:?
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Post by: Anonymous on April 11, 2004, 18:48
is it worth adding relays with a better amp or add the extra money to an even better amp
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Post by: Tem on April 11, 2004, 18:50
Quote from: "adz648"is it worth adding relays with a better amp

Probably not, as they won't have that problem to begin with...