 Power for amp?, Best and easiest place to pull power from? |
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| drem914 |
 Apr 24 2019, 03:52 PM
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#1
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Senior Member  Group: Members Posts: 1,054 Joined: 16-May 08 From: Trabuco Canyon, CA Member No.: 9,062 Region Association: Southern California 
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I am looking to add an amp for a footwell subwoofer. Where is the easiest and best place to pull power from? I really don't want to run a power lead back to the battery. If I have to do that I probably will scrap the whole idea.
TIA |
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| windforfun |
Apr 25 2019, 03:25 PM
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#2
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Advanced Member Group: Members Posts: 2,054 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None
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Go with the largest power amp you can afford. Old cars aren't quiet - especially with the roof off & a loud exhaust system. Power it directly from the battery with a fuse & noise filter. Put the fuse at the battery & the filter at the amp. Trust me, BTDT. I prefer something along the lines of 100 W rms per channel. Don't waist your time with a little diddly shit power amplifier. If you blow out your loudspeakers, you'll know what to do next.
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| Chris914n6 |
Apr 25 2019, 04:09 PM
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#3
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Jackstands are my life. Group: Members Posts: 3,466 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
140w RMS@4ohm should be fine for a 8" sub in our tiny car, but it depends if the rating of the speaker is close.
ex: a 280w speaker will be too tight to make much sound with 140w, but a 150w speaker would be in it's sweet spot. QUOTE(windforfun @ Apr 25 2019, 02:25 PM)  Go with the largest power amp you can afford. Old cars aren't quiet - especially with the roof off & a loud exhaust system. Power it directly from the battery with a fuse & noise filter. Put the fuse at the battery & the filter at the amp. Trust me, BTDT. I prefer something along the lines of 100 W rms per channel. Don't waist your time with a little diddly shit power amplifier. If you blow out your loudspeakers, you'll know what to do next. |
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| drem914 |
Apr 25 2019, 04:25 PM
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#4
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Senior Member Group: Members Posts: 1,054 Joined: 16-May 08 From: Trabuco Canyon, CA Member No.: 9,062 Region Association: Southern California
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QUOTE(Chris914n6 @ Apr 25 2019, 03:09 PM) 140w RMS@4ohm should be fine for a 8" sub in our tiny car, but it depends if the rating of the speaker is close. ex: a 280w speaker will be too tight to make much sound with 140w, but a 150w speaker would be in it's sweet spot. currently have this 8" Polk DVC https://www.amazon.com/gp/product/B073JX8NP...=UTF8&psc=1 ready to go in this enclosure for the front footwell  |
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Posts in this topic
drem914 Power for amp? Apr 24 2019, 03:52 PM
jim_hoyland A separate line from the battery is recommended...... Apr 24 2019, 04:10 PM drem914 But I really don't want to drill anything or r... Apr 24 2019, 04:37 PM bandjoey fuse panel has 1/2 always hot and 1/2 switchable h... Apr 24 2019, 05:10 PM
drem914
fuse panel has 1/2 always hot and 1/2 switchable ... Apr 25 2019, 10:43 AM windforfun Don't forget the "Pi" filter. It at... Apr 24 2019, 05:20 PM Dave_Darling If your amp and sub are low-powered, you can proba... Apr 24 2019, 09:55 PM Steve I ran a thick wire through the center tunnel back ... Apr 25 2019, 06:28 AM drem914
I ran a thick wire through the center tunnel back... Apr 25 2019, 10:41 AM VegasVic
I ran a thick wire through the center tunnel back... Jun 1 2020, 06:05 PM Steve
I ran a thick wire through the center tunnel bac... Jun 1 2020, 07:38 PM VegasVic
Would you elaborate on your specific routing?
It... Jun 1 2020, 10:01 PM VaccaRabite Don't go through the fuse panel. Run a wire t... Apr 25 2019, 11:33 AM drem914
Don't go through the fuse panel. Run a wire ... Apr 25 2019, 03:07 PM porschetub Only way is direct to battery,nothing in the fuse ... Apr 25 2019, 03:03 PM Chris914n6
currently have this 8" Polk DVC https://www.... Apr 26 2019, 04:08 PM windforfun
140w RMS@4ohm should be fine for a 8" sub in... Apr 25 2019, 05:49 PM bbrock I have a couple pics of routing my amp wire on my ... Jun 1 2020, 06:56 PM porschetub Did the same as Steve mentioned ,I used small posi... Jun 2 2020, 06:04 PM |
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