1 or 2 subs?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=38533
Printed Date: October 31, 2024 at 5:59 PM
Topic: 1 or 2 subs?
Posted By: mrdragon
Subject: 1 or 2 subs?
Date Posted: September 02, 2004 at 9:16 PM
hi guys need to ask this...this is what i got 2 12" Kicker EX both rated @ 125WRms(ported), and my amp for each sub is 50Wrms...should i just use 1 sub and BRIDGE the amp to 100Wrms?? Which sound better?
Replies:
Posted By: evanc
Date Posted: September 02, 2004 at 9:21 PM
Bridge the amp, runnning it in stereo won't even be close to enough power. I would highly recommend a larger amp.
Posted By: mrdragon
Date Posted: September 02, 2004 at 9:24 PM
Ok my sub is 4 Ohms and this is the info on my amp: AmpMax Power OutPut (4 Ohms) Normal 100 W x 2 Bridge 300 W x 1 Rated Power Output (4 Ohms) Normal 50 x 2 (20 Hz – 20 kHz less than 0.08 % THD) Bridge 150 x 1(1 kHz 0.8 % THD) Rated Power Output (2 Ohms) Nomal 75 x 2 (1 kHz 0.8 % THD) Now what is the best way to wire this?? Thanks sorri about the mess!
Posted By: stevdart
Date Posted: September 02, 2004 at 9:27 PM
That is not at all readable. I second the recommendation above...but bridging an amp will not produce the power you stated above. That is, the ohm load would be different when each sub is wired in stereo to the amp, so combining them changes it. And bridging an amp halves the ohm load. Please post the impedance of each sub. And the actual ratings of the amp as it is spec'd for the different loads. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: mrdragon
Date Posted: September 02, 2004 at 9:35 PM
My Kicker 12" sub is rated at 4 Ohms ( and i got 2 ) AmpMax Power OutPut (4 Ohms) Normal 100 W x 2 Bridge 300 W x 1 Rated Power Output (4 Ohms) Normal 50 x 2 (20 Hz – 20 kHz less than 0.08 % THD) Bridge 150 x 1(1 kHz 0.8 % THD) Rated Power Output (2 Ohms) Nomal 75 x 2 (1 kHz 0.8 % THD)
Posted By: stevdart
Date Posted: September 02, 2004 at 9:38 PM
Now that's better! ;)
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: mrdragon
Date Posted: September 02, 2004 at 9:44 PM
So can u tell me what is the best way to wire it??? Thanks :)
Posted By: stevdart
Date Posted: September 02, 2004 at 9:50 PM
You posted nonsense garble. I have no info to go on. You are trying to impose rich text into a plain text window. Please just type in the box the answers to what I asked.
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: mrdragon
Date Posted: September 02, 2004 at 10:07 PM
Amp
Max Power OutPut (4 Ohms)
Normal 100 W x 2
Bridge 300 W x 1 Rated Power Output (4 Ohms)
Normal 50 x 2 (20 Hz – 20 kHz less than 0.08 % THD)
Bridge 150 x 1(1 kHz 0.8 % THD) Rated Power Output (2 Ohms)
Nomal 75 x 2 (1 kHz 0.8 % THD)
I got 2 12" Kicker EX sub...each sub is 125Wrms rated @ 4 Ohms each(not sure whether it's DVC or not)
So can you show me what is the best way to wire it..both dvc abd svc? Thanks sorri for all the trouble b4!
Posted By: stevdart
Date Posted: September 02, 2004 at 10:14 PM
You don't know if they are dual voice coil? Look at the back of a sub, are there two sets of terminals (on opposite sides) or one? And how do you know they are 4 ohm? Is there a colored dot on the positive?
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: mrdragon
Date Posted: September 02, 2004 at 10:16 PM
Okay yup there are 2 set of terminal...yes its DVC!
Posted By: stevdart
Date Posted: September 02, 2004 at 10:24 PM
Okay, you have two 4 ohm DVC subs. Wire each one like this: 
Connect one sub to each channel for 75 watts to each one. That's the most you'll get from that amp. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: mrdragon
Date Posted: September 02, 2004 at 10:35 PM
Ok last question with the diagram u just posted to me......do i need to join the +'s and +'s together and -'s and -'s together (on the sub)??? Thanks :)
Posted By: stevdart
Date Posted: September 02, 2004 at 10:39 PM
Yes, just like the diagram shows. Parallel wiring of the voice coils. The 2 ohm at the far left indicates connection to an amp channel.
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
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