Amp and Sub Question?
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=16703
Printed Date: September 14, 2025 at 4:19 AM
Topic: Amp and Sub Question?
Posted By: DuTruo
Subject: Amp and Sub Question?
Date Posted: July 25, 2003 at 11:02 PM
hi, i just installed a fosgate punch 401s amp it's rated at: 100 W X 2 @ 4 Ohms RMS
200 W X 2 @ 2 Ohms RMS
400 W X 1 @ 4 Ohms Bridged RMS
i bridged it and connected it to a JL w3 dual voice coil 6 ohms. i got the sub in parallel and it's at 3 ohms. i notice my amp is getting really hot, am i hooking it up wrong?
Replies:
Posted By: skam213
Date Posted: July 25, 2003 at 11:14 PM
shouldn't wire it lower than 4 ohm bridged.
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Posted By: crichols82
Date Posted: July 26, 2003 at 2:41 PM
if u have the sub in parallel, wouldnt it be at 12 ohms? maybe thats why its not working, try wiring in series
Posted By: bberman1
Date Posted: July 26, 2003 at 3:26 PM
The reason the amp is getting hot is because the lowest independence you can go bridged mono is 4ohms. If you wire it in parallel https://www.audiobahninc.com/tech/wiring/parallel_parallel_dual_6.pdf you will have a 3 ohm load. Your best bet would be not to bridge the subs, run it in a 2 channel configuration. Wire each voice coil to (1) of your amps channels. This won’t give you quite as much power but it’s the only way to get the max out of your amp with out overloading it crichols82 if you were to have a 12 ohm load that would mean that you had it wired in series https://www.audiobahninc.com/tech/wiring/Series_Series_dual_6_ohm.pdf
Posted By: DuTruo
Date Posted: July 27, 2003 at 12:15 AM
thanks everyone for your advise, i'll try bberman1 set up tomorrow
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