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amp to power 2 subs

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Old Feb 27, 2008 | 04:55 PM
  #1  
'86 Camaro BoSs's Avatar
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Car: 1992 Camaro RS - 1971 Chevelle
Engine: 3.1L - 5.7L
Transmission: T-5 - TH350
amp to power 2 subs

What kind of amp would i need to power 2 of these http://ikesound.com/product-product_id/3304
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Old Feb 28, 2008 | 11:29 AM
  #2  
lukn4trbl's Avatar
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From: Kitchener, ONT
Car: 2000 SS, M6
Engine: Modified LS1
Transmission: T-56
Axle/Gears: 3.42
Re: amp to power 2 subs

That depends on what you want to accomplish.

Those are fairly nice speakers, and very efficient. Any sort of amplifier
will power them.

With a dual coil, you can wire the impedence to match the amplifier, or
speaker setup.

I would suggest an amplifier that is about 10% more in RMS power handling
if you're using this for competition use. Aside from that, look for something
with low distortion rating (THD). A cleaner signal will not only sound better,
but it will protect the speaker as well.

It's too bad I'm not doing installs any more. I used to get killer deals on
stereo components.
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Old Feb 28, 2008 | 04:56 PM
  #3  
'86 Camaro BoSs's Avatar
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Car: 1992 Camaro RS - 1971 Chevelle
Engine: 3.1L - 5.7L
Transmission: T-5 - TH350
Re: amp to power 2 subs

i'm looking for a nice sound for mostly rap and rock (some country) on a daily use.. just somthing clean sounding that i could bump somewhat loud.. i was told that like you'd want an amp that pushes double the rms? idk if that's true or not.. i'm just looking for somthing to push those but on a cheapish budget..(basically not above $300) if possible
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Old Feb 29, 2008 | 08:04 AM
  #4  
lukn4trbl's Avatar
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From: Kitchener, ONT
Car: 2000 SS, M6
Engine: Modified LS1
Transmission: T-56
Axle/Gears: 3.42
Re: amp to power 2 subs

I have never heard of the double RMS method. IMO, it would be too much,
and a waste of good amplifier power.

That calculation may come from a misunderstanding of peak to RMS conversion,
or the terrible marketing strategies of some audio companies who rate
their numbers in peak watts. Speakers and amps are also measured
with totally different standards.

Here's a quick and dirty explanation of the ratings:

http://ezinearticles.com/?RMS-and-Pe...ined&id=172075

For selecting an amp. to match the system, let's say your speaker is
good for 125 Watts RMS.

If you have an amplifier that is rated for 200 Watts Peak, the RMS rating
is 141.4 Watts RMS

Since amplifiers increase distortion as they reach maximum power, you will
want to operate in a zone where the distortion is acceptable. Usually 10%
is enough headroom.

With 141.4 W RMS, and operating 10% under max power, you end up with
127.26 W RMS

If the amp circuit is 100% efficient and the input level is always at 100%,
then you will receive 127.26 W RMS at the output.

This scenario is highly unlikely with music sources as the levels are constantly
changing.

If you used the "double RMS" calculation, you would end up with:

125 W RMS Speaker

125 W RMS * 2 = 250 W RMS

250 W RMS /0.707 = ~ 354 Watts Peak

You would only be able to operate this amplifier at 50% to avoid damaging
the speaker.

Last edited by lukn4trbl; Feb 29, 2008 at 08:08 AM.
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Old Mar 4, 2008 | 12:10 PM
  #5  
Killerzracing71's Avatar
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Re: amp to power 2 subs

http://www.sonicelectronix.com/item_...P1000-1bd.html 389 1000+RMS

I have a T1000bd (older model) birthsheet states 1500rms RF amps are overated

http://www.audioque.com/aq/AQamps.htm ~270 for 1.2k rms
Never heard anything bad about them Audioque is on the same line as DD

With 2 10" type R's you need and amp that puts out atleast 1000rms not MAX they are out there for around 300 new (dont get played into geting a amp that cost less then 250.... they wont put out)

Next way to tell look at the Fuse if i has more than 120 amp its putting out 1k rms
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Old Mar 4, 2008 | 12:15 PM
  #6  
Killerzracing71's Avatar
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Re: amp to power 2 subs

BTW the subs are Dual 4 coils

so your options for amp choices limit you like this


Look for amp that puts out 1K rms at the impedencies

1 ohm
2 ohm

4 ohm @ 1000 watts would most likely be out of your price range

DOuble the RMS is WAY WAY WAy to much....

you need about 100-200rms more watts for what ever your subs are rated
for you

500+500+200(overhead)=1200 rms

there you go hope this helps
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