4ohm stable bridged - go with two 4 ohm subs in stereo or parallel mono?

[bigpeelz 10+ year member]

Any help here?

I am running an old school RF power 1100a2 which is 4 ohm stable mono and 2 ohm stable stereo.

What wiring configuration would give me the best bang and not kill the amp with 2 SVC 4 ohm subs?

thanks,

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[GlocksRock 10+ year member]

With those subs, you will have to wire them in stereo. If you parallel them your amp will see a 2 ohm load.

 

[01 S 10 10+ year member]

you'll have to run them stereo, one sub to each channel. you wont be able to get the most power out of the amp with those subs. You can look for a mono amp that puts out the power you need at 2 ohm, or look for DVC 4 ohm subs to get the most out of your current amp.

 

[bigpeelz 10+ year member]

great thanks guys... I thought the old school rockford amps were bullet proof... I figured I could get away with a 2ohm mono load.. I just read the manual and I guess not..

Am I wrong?

http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/fattach_get.php?p_sid=B1i7qQfj&p_tbl=9&p_id=331&p_created=1083775120

page 7??

I appreciate the help

 

[GlocksRock 10+ year member]

You can always try it and keep the gains low.

 

[Horsemanwill 10+ year member]

no don't try it that's just wiring the amp wrong if the manual states 4 ohm mono then it's only 4 ohm mono your only option is stereo.

 

[cx-7heaven 10+ year member]

I have run many RF amps at 2 ohm mono, and never blown any of them. Those were the old school DSM/IX type. You have the ones that came after that.... more of a trapezoid shape colored silver and gold correct? IIRC they kept most of the internal design the same on those amps. I would make sure that cooling is good, and electrical up to par, and give it a whirl.

 

[helotaxi 5,000+ posts]

The series of amps that he has are not nearly the same bulletproof design as the older DSM amps. The DSM amps (at least the smaller ones) were way overbuilt in regard to the low ohm load that they could handle.

 

[dipitydoo 10+ year member]

i would not bridge the amp to 2 ohm mono. run in stereo, or bridged to 8 ohm mono. you will get same power either way.

 

[bigpeelz 10+ year member]

Thanks guys.. Yea I am going to run it 2 ohm stereo. Thanks for all your help..

 

[helotaxi 5,000+ posts]

You can't get a 2 ohm stereo load on the amp with a 2 4 ohm svc subs. Your choices are 4 ohm stereo with one sub wired to each channel or 8 ohm mono with the amp bridged and the subs wired in series. I'd go with the first option.

 

[RG400SmartTowel 10+ year member]

im running a kicker 350.2 in 2 ohms for a year and nothing has happened

 

[squeak9798 5,000+ posts]

im running a kicker 350.2 in 2 ohms for a year and nothing has happened

That doesn't make it an intelligent practice.......

 

[helotaxi 5,000+ posts]

...or applicable to this thread...