275w RMS sub at 4ohm on 200w rms AMP at 4ohm - Car Audio | DiyMobileAudio.com | Car Stereo Forum

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Old 08-08-2016   #1
 
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Question 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

Can you please tell me is this dangerous or i can do this setup.
Interested in putting JBL GT5-1204 BR on my precision power 640.5 Amplifier
I know this is not good to do but i wanna hear what you think

Thanks friends
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Old 08-08-2016   #2
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

Well within power range. I see nothing wrong here.

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Old 08-08-2016   #3
 
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

Just so long as you set your gain correctly and not push the amplifier into clipping, all will be fine.
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Old 08-08-2016   #4
 
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

I wondered why this question, but now I see that clipping could hurt.

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Old 09-15-2016   #5
 
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

What i did till now is:
PPI amp 640.5 and i've bought JBL GT5-1204 BR subwoofer. And now its time for ofc cables
Planing to order those : https://www.amazon.com/gp/product/B0...A3LLMZ9K72U9P2

Anyone have some experience with this brand?
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Old 09-15-2016   #6
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

Quote:
Originally Posted by antibiotic1 View Post
What i did till now is:
PPI amp 640.5 and i've bought JBL GT5-1204 BR subwoofer. And now its time for ofc cables
Planing to order those : https://www.amazon.com/gp/product/B0...A3LLMZ9K72U9P2

Anyone have some experience with this brand?
Go with Stinger or KnuKonceptz

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Old 09-15-2016   #7
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

Knu is all I use. Great quality wire.

As for the power, underpowering can't harm a driver unless it's clipped. Think of it like this, you have a 250 watt amp on a 250 watt sub, but only listen with your volume at 10% of max. The driver will never see rated. Ever.
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Old 09-20-2016   #8
 
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

i've bought the ofc cables from RockVille, now i have one more question. Can you help me to decide which speakers to chouse from this two:
1. TS-A6886R by Pioneer or
2. JBL GTO8629
I am planing to replace my 4 in door speakers with any of those
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Old 09-20-2016   #9
 
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

The jbl sound way better than those pioneers. I have had both in a 6.5 and 6x9 and will take the jbl. They are however 2 ohm speakers so keep that in mind. I wouldn't recommend running them off a radio.
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Old 09-20-2016   #10
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Default Re: 275w RMS sub at 4ohm on 200w rms AMP at 4ohm

Quote:
Originally Posted by nineball76 View Post
Knu is all I use. Great quality wire.

As for the power, underpowering can't harm a driver unless it's clipped. Think of it like this, you have a 250 watt amp on a 250 watt sub, but only listen with your volume at 10% of max. The driver will never see rated. Ever.
I'll do you one better. Underpowering can't harm a driver ever. When you damage a driver because of clipping, you are overpowering the driver.
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