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Old 27th November 2002, 09:04 PM   #1
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Default Can a pro audio/dj amp be used with a subwoofer?

I am curious is a pro audio or dj style amp can be used with a DD/DTS receiver to driver a subwoofer?

If anyone has any input on how this can (or can't) be accomplished, and how to wire it up, it would be most appreciated.

Thanks.
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Old 27th November 2002, 09:26 PM   #2
JBL is offline JBL  Canada
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Of course it can be used. Just plug the sub output of your receiver into the unbalenced(generally 1/4 inch) input.

Some pro amp have 1/4 inch for output also so d'ont mix them up.
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Old 27th November 2002, 09:28 PM   #3
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Default Thanks JBL

THanks for simplifing that for me.

I haven't seen this type of amp, but I was considering purchasing a used one.

It seems a decent price for a load of watts.

Thanks.
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Old 27th November 2002, 09:29 PM   #4
djdan is offline djdan  Romania
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Yes !

If your DD/DTS receiver have a line subbass output you can conect this with a section (one channell ) to Pro Amplifier.
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Old 28th November 2002, 01:03 AM   #5
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Default Double Power

Many pro-amps are switchable to bridging mode.

Eric.
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Old 28th November 2002, 01:57 AM   #6
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Default Absolutely!

Certainly they can be used, and with the caveat which I'll name shortly, that's what I would recommend instead of a consumer amp, because you get so much more for your money. Of course it's already been mentioned that most have 1/4" or XLR inputs, so you will need a cable which adapts that to RCA, not a huge problem there.

The caveat you should beware of is that some pro amps have loud fans inside them. I imagine some are variable speed, such as on my Kenwood THX consumer amp, only coming up to high speed when needed, but some are a fixed speed and always on. If the amp is quite some distance away from you, in a relatively closed cabinet, or in another room, no problem. In my case it would be none of the above, and I'd hear it during quiet passages.


Aaron Gilbert
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Old 28th November 2002, 02:03 AM   #7
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Default Thanks so much.

Thanks to all for the responses.


Now to figure out how to get the LFE channel into the amp.
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Old 28th November 2002, 02:10 AM   #8
haldor is offline haldor  United States
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One note of caution.

If your sub is ported then watch out for overexcursion due to frequencies below the F-r. Better pro amps include a high pass filter that you can set to match the lowest usable frequency response of your driver. This is more of a concern with a TT. A warped LP can create some huge low frequency signals and with the power these big amps produce your subwoofer can tear itself to pieces trying to reproduce the warp.

Phil
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