I just bought a used Alpine PDX 1.1000 off Ebay and when i swopped it with my existing JL audio amp I noticed a sporatic low rumbling noise coming from my sub when the volume is turned all the way down. When I attached the JL audio amp again the noise went away. I also tried attaching a different subwoofer but it made the same noise. When I disconnect the rca cables from the PDX amp the noise stops. Is there some way to fix this or is the amp just messed up?

SOURCE: alpine amp and subs questions

it will depend on how you use the 2 alpine subs,, do you know what there individual impedance is [ ohms ] and how you intend on wiring them,,,in series, in parallel, in any case you must maintain the min load in order to load the amplifier properly,,,otherwise the amplifier will operate improperly and allow DC [ direct current ] to pass and fry your subs...so what I really need is more in formation

SOURCE: Hi, I've just install an

If you have the RCA's running from the head unit to the amp, and the speaker wires running to the speakers then you have it hooked up right. Now If you still don't have any sound then you need to look at the amp to make sure that you have a green light. Still I would use 8 or 10 gauge power wire and then the same for the ground wire, make sure that you have a good ground.

Freakville03

SOURCE: alpine pdx 1.000 keeps cutting out

You are going to want to make sure all your power wires and grounds are 4 gauge as well as the wire leads to and from the capacitor-4 gauge also. make sure you have a very good ground - the power wire from the battery should hit a distribution block-from the dist. block a 4 gauge should go to the capacitor another 4 gauge to the mono amp and another to the 4 channel amp -every component should have a good solid ground even if you have to bust out a grinder and a drill and some self tapping sheet metal screws and go nuts on it- see if that helps you

SOURCE: Alpine PDX-1.1000 to a 10 "Alpine SWX-1043D

straight up. Since it has the power saving technology where it gives out the same power at 2 ohm and 4 ohm loads then u dont have to bridge it and since its a single speaker you dont have to bridge it and since it is a mono block oyu dont have to bridge it. just wire + to + and - to -.

SOURCE: Alpine PDX 1.1000 low power output - sub not loud

system not configurate properly go to a pro and let them do for you you have good equipment just need to put together rite.for wht you have you can get better sound than that,,good luck