How to set alpine pdx f4 crossover to run alpine spr 68 speakers

It may be a bad voice coil. It would make that type noise. If the cone isn't cracked its the coil.

Set the two switches filter to: off. You do no need filtering your speakers as they are full range ones.

Hello sir good day. Try to check this link it may give you an idea. http://caraudio.manualsonline.com/manuals/mfg/alpine_electronics/pdx-4.100m.html best regards.

The six 1/2 speakers are your woofers,connect the positive and negative wires from the speaker to the 2 connections labeled on the crossover as W(woofer)+ pos and W(woofer) -- neg,hook the tweeters to the crossover connections labeled T(tweeter)+ pos and T(tweeter) -- neg,then hookup the 2 remaining connections labeled Amp to your amplifier,amp must be 2 or 4 channel stereo capable and give out enough power to properly drive the speakers so they achieve optimal performance.

Well the solution all depends on the car you want to put them into.

Disconnect all speaker leads from the PDXf4 - test. If the amp turns on and says on ok - then turn off, and attach one speaker lead at a time until it turns off. When it does check that speaker and the speaker wire to see if it is blown, shorted out etc.

you have 2 + and 2- right? twine both speaker wires together. like + to + and - to - and then pick only 1+ and 1- to hook up and then you should double the power to the speakers only

check your coil wires on the back of the sub

Make sure your speaker wiring does not come close to the 12v power cable running for your amplifier. If your amplifier's 12v power cable runs on the drivers side of the vehicle, run your speaker cables on the passengers side and make sure your tweeters have a high pass filter to stop any pickup of engine sound (When you are driving you *WILL* notice it at high RPM. a HPF (High Pass Filter) will also stop those nasty hissing sounds on S's.

According to the manual, the issue could be:

• Internal issue with the amp circuitry.
• A short on the speaker output(s).
• Power source voltage is too high (aka above 14.5V).
• Overheating.

The easiest thing to do is to try removing the connections to the speakers at the amp and see if the issue disappears after each set has been disconnected. Keep removing wires until both LEDs stay blue.