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Message Forums Car Stereo Message Forums > Subwoofers and Speakers > Very new to car audio...qustion.
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Nate154
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 Very new to car audio...qustion.

Precision Power
Professional MOS-450
50 watt per channel x4
.02% THD @ 4 ohm Load


This is my amp. I just want one "12. I see subs have different ohms and stuff. What can I use with this? Thanks.

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New Post 09-21-2011 09:39 PM
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SentraStyleEMW
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You can bridge 2 of the channels together at a 4 ohm minimum load.  I hadn't looked up the specs of your amp...but I'm guessing bridged it will put out ~100 watts RMS or so.  So you would need a low power single 4 ohm sub or a low power dual 2 ohm sub...either will yeild  a 4 ohm load to the amp.

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New Post 09-21-2011 11:47 PM
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Nate154
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What's a low powered sub?

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New Post 09-21-2011 11:54 PM
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newfosgatesucks
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You need an efficient sub that has a lower wattage rating - your amp will do roughly 150 watts per pair bridged -giving two actual high powered outputs. 

  You need a dual voice coil sub that is rated in the 300 -500 watt range.  4 ohm PER COIL.

   Nice amp by the way, they are really good amps, and nice. 

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New Post 09-22-2011 03:55 AM
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Nate154
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Any suggestions? :)

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New Post 09-22-2011 12:51 PM
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N2Audio
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No guys. This is an old school US built cheater amp:
http://www.precisionpower.com/Manuals/Amplifier%20Manuals/Precision_Power_ProMos%20Series%204%20Channel%20Amplifiers.pdf

There's one on ebay right now for $325 starting, $375 BIN.

This old school bad ass will do 400x2 at 2 ohms bridged.
A kicker cvr with dual 4's comes to mind. Basically any decent quality dual 4 that's 300-500w rms.
And you'd still have 2 ch available to power a good set of full range speakers.

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New Post 09-22-2011 03:28 PM
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Nate154
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Sweet, thanks!

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New Post 09-22-2011 03:32 PM
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Nate154
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Here's a few that I found on Ebay. One's more expensive than the other. Not sure what the difference is.

Link 1
Link 2

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New Post 09-23-2011 01:23 AM
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N2Audio
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No difference really, just the older model vs the new.
I prefer the cheaper option personally. Plus, the lg ported box should provide a little more output.

This is good quality: http://www.ebay.com/itm/POLK-AUDIO-DB1212-12-Ported-Subwoofer-Enclosure-Sub-/390349259642?pt=Car_Subwoofers_Enclosures&hash=item5ae2a1037a#ht_3656wt_1396

another good option, but a little pricey: http://cgi.ebay.com/2011-KICKER-VS12L34-12-Loaded-Enclosure-4-ohm-800w-NEW-_W0QQcmdZViewItemQQhashZitem5d3058bf51QQitemZ400243081041QQptZCarQ5fSubwoofersQ5fEnclosures#ht_2878wt_1396

http://www.ebay.com/itm/JL-Audio-12-Subwoofer-100-500W-RMS-Sub-/220860188788?pt=Car_Subwoofers_Enclosures&hash=item336c4b0874#ht_500wt_1156

http://www.ebay.com/itm/Polk-Audio-DXi112-12in-Subwoofer-w-enclosure-720W-/140610141333?pt=Car_Subwoofers_Enclosures&hash=item20bd047c95#ht_4120wt_1163

http://cgi.ebay.com/ALPINE-SWR-1243D-12-1800W-SUBWOOFER-SUB-BOX-ENCLOSURE-_W0QQcmdZViewItemQQhashZitem5ae26adc5cQQitemZ390345710684QQptZCarQ5fSubwoofersQ5fEnclosures#ht_5181wt_1139

http://www.ebay.com/itm/RE-AUDIO-UB12BS-12-JamBox-ENCLOSURE-SR12-SUB-UB-12BS-/170693493098?pt=Car_Subwoofers_Enclosures&hash=item27be20016a#ht_1872wt_1396

http://www.ebay.com/itm/KENWOOD-KFC-XW1224D-12-SUBWOOFER-SEALED-SUB-BOX-/390341483274?pt=Car_Subwoofers_Enclosures&hash=item5ae22a5b0a#ht_5168wt_1139

http://cgi.ebay.com/MB-QUART-ONX304SQ-12-SQUARE-SUBWOOFER-SEALED-SUB-BOX-_W0QQcmdZViewItemQQhashZitem5ae14b73e5QQitemZ390326875109QQptZCarQ5fSubwoofersQ5fEnclosures#ht_5520wt_1139

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Nate154
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Thanks for taking the time to find those! Now, some these say 2 ohm impedance, is this something I can use?

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N2Audio
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 RE:

quote:
Originally posted on 09-23-2011 by Nate154
Thanks for taking the time to find those! Now, some these say 2 ohm impedance, is this something I can use?

yes, that means the sub is a dvc 4 with the coils wired parallel inside the box. that gives you 2 ohms at the box terminals which goes back to what I said originally -- that the amp will 400w rms bridged at 2 ohms.

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New Post 09-23-2011 04:18 PM
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Nate154
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Ah. Thanks for your help.

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New Post 09-23-2011 04:24 PM
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Nate154
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If this is my wire, what kind of fuse would I use? Also, what is the part called that connects from the other part of the fuse to the battery. Thanks.

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New Post 09-26-2011 01:44 PM
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seanhennesey
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shit i call them power strips bc thats were all your power comin from mostly but other people might say different.

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