Car Audio Sub Wiring Question

[Spineshank]

I got a RF 5002 amp that can do 500 x 1 RMS @ 4ohms. I have 2 SVC 4ohm subs. Can i wire these in 2ohms x 1 or will it hurt the amp or subs?

 

[AdamK47]

I wouldn't chance it. With that amp and sub combination it looks like you can do 125W x 2 @ 4 Ohms RMS. These amps aren't that great for two 4 Ohm SVC speakers. I have the 4002 Rockford Fosgate amp and it runs great with two 10" DVCs in parallel for 2 Ohms each. The amp runs very hot when at full power level. You would most likely trip the thermal protection quickly running at 2 Ohms bridged. That is if nothing else goes wrong.

 

[Spineshank]

Yea I figured that was the case.

 

[Muadib]

This is the amp,right?
Yes, you can, with no problems. You would wire the speakers in parallel. The sub in my car just blew, so I can't help but envy you.

 

[AdamK47]

Originally posted by: Muadib
This is the amp,right?
Yes, you can, with no problems. You would wire the speakers in parallel. The sub in my car just blew, so I can't help but envy you.

It's this one. This is the one that is 500W x 1 @ 4 Ohms.

 

[Muadib]

Originally posted by: AdamK47 3DS

Originally posted by: Muadib
This is the amp,right?
Yes, you can, with no problems. You would wire the speakers in parallel. The sub in my car just blew, so I can't help but envy you.

It's this one. This is the one that is 500W x 1 @ 4 Ohms.

OK, I looked at the model number, and thought that was it. I agree with you then. I wouldn't do it with that amp.

 

[JustinGoodie]

I'm running a system that is quite similar to what you're trying to do... I've got a pair of 12" 4ohm SVC subs powered by a rockford 1000bd (1000 x 1 @ 2 ohms or 500 x 1 @ 4 ohms) now my amp is a class D, whereas your's is class A/B. I think that the biggest deciding factor is how much power your subs can handle. mine can handle 500W RMS each, so i've got them bridged to run at 2 ohms (vs. 4) and they're being given all their rated power.

the most power you're gonna get out of your amp would be 1000W RMS x 1 on a bridged 2 ohm load. which divides to 500W RMS for each sub, basically the same as mine, but if your subs are rated for any less than 500W continuous, i would run them in stereo and only give them 250W apiece.

another thing to consider is that the amp you're using is class A/B, which run A LOT hotter than class D, and if you want to/can run it at 2 ohms bridged, it is definitely gonna get pretty hot, more than likely to the point where you would need a cooling fan or two on it.

 

[glen]

In theory, you can duble your amplifier "power" by dropping the speaker resistance.
This gets folks really exicted, and it is the source of endless talk in the car shop and on these forums.
In reality, it makes very little difference in what your car sounds like.

 

[AdamK47]

Originally posted by: glen
In theory, you can duble your amplifier "power" by dropping the speaker resistance.
This gets folks really exicted, and it is the source of endless talk in the car shop and on these forums.
In reality, it makes very little difference in what your car sounds like.

It makes a difference when pairing that speaker resistance with an amplifier and that's what this thread is about.

 

[glen]

Originally posted by: AdamK47 3DS

Originally posted by: glen
In theory, you can duble your amplifier "power" by dropping the speaker resistance.
This gets folks really exicted, and it is the source of endless talk in the car shop and on these forums.
In reality, it makes very little difference in what your car sounds like.

It makes a difference when pairing that speaker resistance with an amplifier and that's what this thread is about.

You are right, if you short the amp out and break it, it makes huge difference in sound.

 

[Spineshank]

Well to make it more interesting i had bought the amp "new" and noticed last night that the fuses were shot. Im probably gonna get my money refunded and just go for an amp that can handle 2 ohms.