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Thread: Help me find an AMP for my 2 Infinty Subs Please |
    
Markdawg1 Unregistered guest |
| Posted on Monday, November 22, 2004 - 07:26 pm: |
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I have dual Infinity Reference 1230 subs in the back of my suburban (http://www.infinitysystems.com/caraudio/product.aspx?ProdId='1230W'&Ser=REF&Cat=SUB). These subs claim to run at 300 RMS @ 4 ohms. At the time, I just bought a Fosgate PUnch 301m amp because i was low on cash (http://www.rockfordfosgate.com/ez2/ModelInfo/ModelInfo.asp?ItemKey=10061221&Cate goryDesc=Punch%20Amplifiers) This amp only puts out 150 x 1 @ 4 ohms. I know that this means I am obviously under powered. Now the questions I have are:
Should I buy a 4 channel, 2 channel, or Mono amp for the 2 subs. I have seen 4 channel amps that put out 300 x 2 RMS @ 4 ohms, is this the ideal fit for me?
what amp should i get?? |
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markdawg1 Unregistered guest |
| Posted on Monday, November 22, 2004 - 10:20 pm: |
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please help |
Silver Member Username: Carguy
Post Number: 338
Registered: Nov-04
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| Posted on Monday, November 22, 2004 - 10:35 pm: |
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Hey Markdawg1, the amp you have is sufficient. Since you said you have dual subs, wire them in parallel so that you get 2ohms. Now the amp will supply 300W rms into both speakers.
For subs, you don't need stereo amps. Mono class D are the best since it uses less power to produce high output.
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markdawg1 Unregistered guest |
| Posted on Wednesday, November 24, 2004 - 11:45 am: |
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But if 1 sub runs at 300 rms at 4 ohms, wouldnt you need double that power to run 2 subs???/ |
Silver Member Username: Carguy
Post Number: 401
Registered: Nov-04
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| Posted on Wednesday, November 24, 2004 - 12:10 pm: |
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Nope, connect both subs to one amp and it'll pump 300W. Think of it as having 2 12v light bulbs. You don't increase the voltage to 24v to power 2 12v bulbs right? Same thing with the amp. |
Markdawg1 Unregistered guest |
| Posted on Sunday, November 28, 2004 - 02:05 am: |
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what about 4 channel amps that boast 300 x 2 RMS @ 4 ohms ratings? They say that that is the best for 2 subs... what is the difference between this method and running one Mono amp? |
Silver Member Username: Carguy
Post Number: 497
Registered: Nov-04
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| Posted on Sunday, November 28, 2004 - 09:00 pm: |
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Hey markdawg1, why would you want to get 4 channel amp to power the subs? You'd be wasting lot of power. Sub amps are made for delivering lots of power using less current.
If you get class D 400W rms amp, you'll get much better result in terms of power and sound.
Don't forget the remote bass control.
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