Standard HiFi speakers

[strike4A]

Hi everyone, first post here...

I have the HiFi system installed in my car and I'm shortly about to start upgrading. I plan to replace the amplifier with an Alpine PDX-5 and install Earthquake SWS-8 subs under the front seats and also Focal 100 KRS component speakers up front.

I am not too bothered about the rear speakers and was going to leave them in and connect them up to the PDX-5 however I've just realised these OEM speakers are 2 ohm rated and the PDX-5 is only 2 ohms stable on the subwoofer channel and not channels 1-4.

Is there any serious risk of damaging the PDX-5 if I connect the OEM speakers or should I replace them as well?

[Technic]

Originally Posted by strike4A

Hi everyone, first post here...

I have the HiFi system installed in my car and I'm shortly about to start upgrading. I plan to replace the amplifier with an Alpine PDX-5 and install Earthquake SWS-8 subs under the front seats and also Focal 100 KRS component speakers up front.

I am not too bothered about the rear speakers and was going to leave them in and connect them up to the PDX-5 however I've just realised these OEM speakers are 2 ohm rated and the PDX-5 is only 2 ohms stable on the subwoofer channel and not channels 1-4.

Is there any serious risk of damaging the PDX-5 if I connect the OEM speakers or should I replace them as well?

The PDX-5 -and all PDX amps- are stable at 2 ohms at all their channels; I called Alpine personally to clarify their own tech specs and they confirmed it.

[GtiGyver]

Originally Posted by Technic

The PDX-5 -and all PDX amps- are stable at 2 ohms at all their channels; I called Alpine personally to clarify their own tech specs and they confirmed it.

I can confirm this too. I called them and I'm actually running a similar setup with 2ohms on all 5 channels.

In fact, one of my subs shorted out and I didn't notice, it was only when I would crack up the volume that the amp would go into short-circuit protection.
I measured the resistance on the sub channel and it was only 1 ohm! (The OEM wiring adds some resistance to whatever setup you have)