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Old 5th September 2006, 06:42 AM   #1
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Exclamation Need an amp to power my 1500 watt beasts.

If I posted this in the wrong forum please redirect me.

I've built two homemade speaker cabinets that can each handle 1500 watts rms @ 8 ohms and a need an amp that will be able to supply these beasts with some power.

Actually what I want to do is install a DJ amp on each cabinet so that they will be able to power themselves. So far I've searched and since I can't afford to pay 2,3, and 4 thousand dollars for an amp, being that I'm only 14, the best thing I've found is to install two of these numark dimension4 amps
http://www.electronicgiant.net/catal...a9ec93ab8aafe1
which i can get for around $900 all together.


Now that is already more than I can afford but I'm willing to pay it as long as I can get my speakers up and working.

But the reason I'm posting is to see if anyone know of any better deals before I go spending close to a grand on these amplifiers.

Thanx.
 
Old 5th September 2006, 10:35 AM   #2
djk is offline djk
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We need precise details as to what your speakers are.

DJ systems are either bi-amped or tri-amped with an electronic crossover and either two or three amps.

That site you linked to is not an authorized dealer for anything they list. Don't even thing about buying anything from them.

I can help you figure out what you need, but more info please.
 
Old 5th September 2006, 11:06 AM   #3
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Hi punkrokr1701

I had the same problem for my band.

The best solution is that one than djk:a tri-amped with an electronic crossover .

My personal system is the same with 200W for the low freq.
130W for the mid and 80W for the high.

The quality of this amp it is not the more important thing:reliability is that of which you have need.

The system I have work without problem from 1998.

My amp are overdimensionated: for a 200W the components are the same than a 300W ,and similar for the other amps.

If you follow this philosophy,your system will give many satisfactions to you
 
Old 5th September 2006, 11:07 AM   #4
AndrewT is offline AndrewT  Scotland
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You need to research your topic more thoroughly before deciding on power levels and potential excess SPL problems.
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regards Andrew T.
 
Old 5th September 2006, 11:20 AM   #5
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Hi
The power in DJ and P.A systems it is not never enough.
Better to have more than less
The situations in which it is worked are not known.
 
Old 5th September 2006, 11:23 AM   #6
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Here's some links with all the info I can find about the speakers:

3-3/8" BULLET TWEETER

http://www.partsexpress.com/pe/showd...number=270-055

SELENIUM 6W4P 6" WOOFER

http://www.partsexpress.com/pdf/264-422s.pdf

SELENIUM 12PW5-SLF 12" 300W PA DRIVER


http://www.partsexpress.com/pdf/264-370.pdf

For some reason I can never find anymore info on any tweeter than the basics that are in the link.

Well, I don't know what else I can put up here about the speakers.

Except that I never turn my current system up any louder than the -10db rating on my Denon A/V reciever and the volume starts at -80 db and goes to +10db and I don't intend to turn these speakers up any louder than what I already have.

So don't worry about me damageing my hearing I'm real careful about that because I also never turn my CD player up past 16, maybe 18, which is about half way.

Thanx for the input.
 
Old 5th September 2006, 11:27 AM   #7
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Oh and there are 3 tweeters, 2 mid bass, and 2 woofers.

I've already made a smaller set of these but now that I've got a bigger living room to fill a want something that will smash any competition I'll get from the neighboors. Haha.
 
Old 5th September 2006, 11:34 AM   #8
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punkrokr1701
It is an error to consider a simple volume attenuator position like a power level.The power output of any amp is determined also by the input source level(example,a CD player had,normally,a highest level than a cassette player or a tuner).

Sorry I don't know this speakers.

In onerous situations like a DJ system,it is better to use a well known speakers in order to avoid "muting" situations.

Currently i play with a young people orchestra (it's my job)and i know these problems
 
Old 6th September 2006, 08:44 AM   #9
djk is offline djk
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How long ago did you buy those drivers?
 
Old 6th September 2006, 11:15 AM   #10
elaar is offline elaar  United Kingdom
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Why do people insist on quoting their speaker wattage output as the sum of all of the driver outputs? If you used an electronic crossover and an amplifier for each driver then yes you could say the system accumalitively uses that much power, but it wouldn't have anywhere near the SPL.

Anyway, you have 2 options, passive crossovers and you will will only need 1 amp, with a max power rating of 300watts, or nearer 600watts if you want to stress your speakers a bit.

Or get a 3way stereo electronic crossover, and buy 3 amps, none of which need to be anywhere near the 1500watts figure you quoted.

The amp for the tweeters needs only be about 50watts (if your main bass speaker is 300watts then at that level the tweeter will consume about 15% of that to retain the same noise level).

Looks like your mid amp need be about 100watt, and your bass amp 300-400watts i would say.

If you actually used 1 of those numark amps per speakerbox (1350watts @ 8ohms bridged) you would kill all of your speakers instantly.
 

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