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Post by brightman27 on Feb 24, 2014 11:53:07 GMT -5
New to the amp thing for sterio,but when i play music,the power amps we turn wide open and control sound with the mains on the board...should ya do the same with these? Im using a Marantz receiver as a preamp into two XPA 100 monoblocks....should i turn them wide open and control level with the receiver..and to avoid the power on thump...turn them on first with volumes down? Prbably stupid questions but hey,thats the place Im at...
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Post by Cory Cooper on Feb 24, 2014 12:04:35 GMT -5
Hello,
There are no gain controls on the XPA-100 amps, so no. To prevent any thump, always turn on the Marantz first, then the XPA-100s. Turn the amps off first, then the Marantz when powering down This is also true with PA equipment - amps on last, off first.
Side note - I would't recommend running your pro amps with the gain set to full. You can still get full power from them, even with the gain set to 50% or less. I strongly suggests that you research setting gain structure in your PA system to fully realize its potential, lower the noise floor, and prevent speaker and/or amplifier damage.
C
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xki
Emo VIPs 
Gwack!
Posts: 1,756
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Post by xki on Feb 24, 2014 12:08:48 GMT -5
Agreed! Amps on last, off first. Additioanally, most PA amps don't have the power on circuitry that a good stero amp does. When I was gigging, the QSC amps we used thumped regardless of power on sequence. Hello, There are no gain controls on the XPA-100 amps, so no. To prevent any thump, always turn on the Marantz first, then the XPA-100s. Turn the amps off first, then the Marantz when powering down This is also true with PA equipment - amps on last, off first. Side note - I would't recommend running your pro amps with the gain set to full. You can still get full power from them, even with the gain set to 50% or less. I strongly suggests that you research setting gain structure in your PA system to fully realize its potential, lower the noise floor, and prevent speaker and/or amplifier damage. C |
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Post by Cory Cooper on Feb 24, 2014 12:14:00 GMT -5
My pair of Crown CE 4000 amps don't ever thump...they have very nice power on/off muting circuits. Still, amps on last, off first.  C |
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Post by brightman27 on Feb 24, 2014 14:51:09 GMT -5
Well there ya go...see...I am asking stupid questions...havent received them yet so never new that...thanks guys..as far as the old PA amps...they were old peavy cs 800s..hell they thumped on and off
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Post by Cory Cooper on Feb 24, 2014 14:53:59 GMT -5
Yeah, I have used some of the older Peavey amps - they always did thump for me as well. C |
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Post by dust770 on Feb 24, 2014 16:11:42 GMT -5
If your Marants has trigger outs you can use those as well.
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Post by brightman27 on Feb 25, 2014 8:48:45 GMT -5
So what are the trigger outs for exactly. Are they to trigger the amps on if you have the amps plugged in the the back of the Marantz? I think it does have trigger out.just got it so not real sure.
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Post by Nodscene on Feb 25, 2014 9:16:41 GMT -5
You are correct.
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Post by garbulky on Feb 25, 2014 12:18:41 GMT -5
Well there ya go...see...I am asking stupid questions...havent received them yet so never new that...thanks guys..as far as the old PA amps...they were old peavy cs 800s..hell they thumped on and off The Emo amps don't thump. I don't know how your marantz does. I assume it doesn't. I leave mine turned on. I find it sounds better that way. Others find different, just so you know. Enjoy your amps! |
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