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Which Amp to Use on 3 Subwoofers or Can I Use Both?


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ascottbain 
Member - Posts: 2
Member spacespace
Joined: July 21, 2020
Location: Kentucky, United States
Posted: September 08, 2020 at 10:19 AM / IP Logged Link to Post Post Reply Quote ascottbain
Hello, I have a 98 Buick Park Ave. factory head unit with factory 9 speaker set up. Hooked up a Line output converter to rear speakers. I have 3-12” SVC 4ohm powerbass subs Rms/Max250/500wattsin a sealed box. Subs came with a Profile California Ap1200 amp Rms 2 x 200w @4ohm or 2 x 300w @2ohm. I also just purchased a Fosgate punch p300.1 mono   2ohm 300w x1 or 4ohm 150x1. I feel like the punch should deliver more power than the Profile or could I use both some sort of way.. thanks in advance.
Scott
Ascottbain
raging bull 
Member - Posts: 4
Member spacespace
Joined: October 25, 2020
Location: Alberta, Canada
Posted: November 20, 2020 at 9:37 PM / IP Logged Link to Post Post Reply Quote raging bull
Which Amp to Use on 3 Subwoofers or Can I Use Both? - Last Post -- posted image. From what I understand you have the sub confugered in the picture. You would need an amplifier that can handle down to the 1 ohm impedance.
ascottbain 
Member - Posts: 2
Member spacespace
Joined: July 21, 2020
Location: Kentucky, United States
Posted: November 21, 2020 at 10:11 AM / IP Logged Link to Post Post Reply Quote ascottbain
Thx for the reply. I’ve tried setting it up a few ways.First in series 12ohm load with both amps then next I set it up where + to left sub and - to right sub then same + & - to Center sub and a bridged wire Lsub- to Rsub+ 2.7 ohm load. Most recently I installed a JVC HU and got rid of LOC. Now I have the profile ap1200 running a set of Boss 6x9’s and alpine 5 1/2 and the punch to the 3-subs. Not sure about the ohms on this but I just took all 3 pos from subs to pos on amp and same with neg. the punch is 2 ohm but the speakers are 4. Is this ok? No problems yet but I haven’t been driving it a lot lately. I’m thinking about selling the amp and subs and just starting over and matching correctly this time. I jumped into this build way to fast! The game has changed a lot since 90’s!thanks again for the input.
Ascottbain
geepherder 
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Platinum spaceThis member consistently provides reliable informationspace
Joined: October 27, 2003
Posted: November 21, 2020 at 1:20 PM / IP Logged Link to Post Post Reply Quote geepherder
You have them in parallel as suggested above, and that amp is not stable at 1 ohm. See here:
https://www.the12volt.com/caraudio/subwoofer-wiring-diagrams.asp?Q=3&I=41
My ex once told me I have a perfect face for radio.
raging bull 
Member - Posts: 4
Member spacespace
Joined: October 25, 2020
Location: Alberta, Canada
Posted: November 22, 2020 at 8:58 PM / IP Logged Link to Post Post Reply Quote raging bull
that is the exact picture i posted above, The final resistance in ohms of the 3 subs wired in parallel is 1 ohm. The amp needs to be 1ohm stable. The subs will be ok, the amp may overheat and thermal shut down.     Can you please post exact which model of amp you are using on the subs, Is it a Punch amp, but which model??
It may be stable down to 1 ohm .

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