What ohm load

[boulderbronco 10+ year member]

I am looking at replacing my Orion 275 SX with an Orion HCCA 275 G4. It is rated at 150x2 @2ohms. If I bridge it to my two BA 12" subs what load will it see and what kind of power will I get from the amp. I think I will get 600W to both subs and the amp will be running at 1/2 ohm, which it can handle. Thanks

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[jrz126 10+ year member]

how do you figure it will run at 1/2 ohm? what is the voice coil config for your subs?

 

[boulderbronco 10+ year member]

My subs are 4ohm Boston Acoustic Rally's. I got 1/2 ohm going from 150x2 @2ohms to 300x1 @2ohms to... oh yeah. I get 600x1 @1ohm or bridged I would see 300 at each sub. Right?

 

[jrz126 10+ year member]

Yeah umm...you kinda lost me there...are the subs dual or single voice coil?

If they are single voice coil, then you can wire them in parallel and connect them bridged to the amp. That will give you 300 watts for both speakers (150 each).

I dont think that amp is capable of running at 1 ohm. (if it were, wouldnt they say it in the details?)

 

[boulderbronco 10+ year member]

It is a single voice coil. As for the amp it is well more capable than what the "specs' say. Many Orion amps are stable down to 1/2ohm, including this one. I ran my Orions at 1ohm for 10 years until they both blew.

 

[jrz126 10+ year member]

well, either way, you are only going to be able to get a 2 ohm load out of those subs

 

[johnecon2001 5,000+ posts]

You're only wiring options with SVC 4ohm subs (x2) is 2 ohms or 8 ohms. There is no way, using just two subs to wire to 1/2 an ohm.