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'soft start' board for amp?
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mk2_ginger_biscuit69 View Drop Down
Old Croc
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Points: 7801 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mk2_ginger_biscuit69 Quote  Post ReplyReply Direct Link To This Post Topic: 'soft start' board for amp?
    Posted: 15 March 2013 at 2:06pm
how easy would it be to install a soft start relay to an amp [bk MX300?]. I don't intend on having any level control, just full gain, controlled from the processing.

Had a google about, seems there are boards, but from china with dodgy/non existent instructions!
''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it''

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kedwardsleisure View Drop Down
Old Croc
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Points: 4947 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 2:33pm
an mx300 won't need one, the inrush isn't that much. But if you're concerned about it, the best bet on a small amp like this would be an NTC Surgeguard or Ametherm in series with the mains, around a quid or less and very reliable.

http://uk.farnell.com/ametherm/sl15-10006/thermistor-ntc-radial-10ohm/dp/2113005
Kevin

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studio45 View Drop Down
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Points: 3864 		Post Options Post Options   Thanks (0) Thanks(0)   Quote studio45 Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 5:10pm
do you mean a remotely controlled mute relay, rather than a soft-start?
Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA
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mk2_ginger_biscuit69 View Drop Down
Old Croc
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Points: 7801 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mk2_ginger_biscuit69 Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 5:32pm
just something to stop it going boom on powerup, unless it isn't much of an issue with it?
''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it''

''Dubstep - an elongated electronic fart''
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markie View Drop Down
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Points: 4570 		Post Options Post Options   Thanks (0) Thanks(0)   Quote markie Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 7:03pm
I've used  several of these and never experienced any boom. I assumed they were already fitted with them.  I have one for sale if anyone's interested.
If it's got wheels or tits it's gonna cost a fortune
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Dub Specialist View Drop Down
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Points: 3230 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 7:33pm
you talking about turn on/off thumps threw your speaker's?

so you saying that little thermistor will do the job? 

got a few old amps that does turn on thumps , i just plug in speakers after turn on Smile

please can anyone put some more detailed info, much appreciated

thanks...
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Points: 7216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 7:54pm
Soft start and delay/anti-thump are different things. Smile

I´ve actually fitted a couple of those "dodgy Chinese" soft start boards to some old amps and they´ve been fine. I´ve also tried a couple of anti-thump boards from same and found them hopeless. Ended up designing my own board for that.
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Dub Specialist View Drop Down
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Points: 3230 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 8:03pm
cheers earplug

anyone got link to them boards?

thanks 


Edited by Dub Specialist - 15 March 2013 at 8:05pm
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Old Croc
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Points: 7216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 8:16pm
Soft start boards:

http://www.ebay.com/sch/i.html?_odkw=amplifier+soft+start&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313&_nkw=amplifier+soft+start&_sacat=0

Protection/anti-thump:

http://sound.westhost.com/project33.htm

Or dodgy boards:  Smile

http://www.ebay.com/sch/i.html?_odkw=amplifier+delay+kit&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313&_nkw=amplifier+dc+protection+&_sacat=0
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kedwardsleisure View Drop Down
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Points: 4947 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2013 at 8:59pm
ok, so you dont want a soft start, you think you want an anti-thump speaker relay.

The BK module won't need one of those either, they power ok as they are.
Kevin

North Staffordshire
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