rockford fosgate amp is hot in bridge mode

[02f150]

Hello everybody I'm new here and a bit new to car audio. anyways I just wanted to make sure that i have my amp wired correctly.

my specs are:

-factory HU with a line output converter to run my rca's

-one 12" clarion PXW1251 2 ohm DVC rated for 500rms (1000 peak)

-rockford fosgate punch series p5002 2 channel amp 500rms (1500 peak) at 4 ohm's bridged

-running 4 gauge power wire and ground and 16 gauge speaker wire.

anyways I have my sub hooked up in series which should make it 4 ohm correct because it doubles the impedance? my amp is 4 ohm stable while bridged and i'm worried I am possibly running 2 ohm and this is why it is getting warm? I mean it's not hot to the point where you cant touch it but very warm after about 30 minutes of bumping it hard. any advice appreciated!

oh and YES I do know I am over powering my sub....I'm not worried.

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[mlstrass 5,000+ posts]

You can use a DMM to verify final ohm load. And A/B amps tend to run hotter then Class D...

 

[02f150]

thanks for the reply! I was planning on checking my ohm load with my multimeter soon I just figured I would ask on here first. Do you think I would benefit from having cooling fans blowing on the amp?

 

[02f150]

ok here's an update: i checked the ohm load with my multimeter and it was showing 0.45 ohm. so i took the sub out of the box realized the connections were loose so i tightened them up checked each coil individually both showed 2.1ohm and when finally wired in series 3.9ohm. hooked it all back up in bridge mode and after 15min drive at full blast with heavy bass the amp still gets hot so i'm guessing its normal. you guys let me know! I am looking into little 12v fans to cool the amp. Thanks

 

[basswiigee]

if it is anything like the prime 500, only bridges @ 2ohm

 

[naughtyca 10+ year member]

Fosgates always runs hot, as long as it does not go into protect and yes the fan will help

 

[02f150]

Thanks for the reply guys! In response to basswiigee: no the amp is only 4 ohm stable in bridge mode and 2 ohm in stereo. But I think I will just get some fans and keep on bumping!