I need a bass boost knob for my alpine mrd-m501 amp. Anyone know where I can find one????

SOURCE: alpine mrd-m500

Hi SPDGOD,

Could not find exact, but close manual.  It is the MRP-M450 mono block amp from alpine.

Go to this url and view in Adobe. Print it if you need to

http://vault.alpine-usa.com/products/documents/OM_MRP-M450.PDF

SOURCE: alpine mrd m500 amp is not pushing my 12 in infinity sub

If you have a dual voice coil sub, make sure that you have the positive and negative terminals connected properly. If you have ONE of the coils wired backwards, it will cause the speaker to produce little or no sound.

Have you set the gains properly?

Are you sure the amplifier is receiving a strong signal from the head unit?

Have you tried it with a different speaker?

SOURCE: Alpine MRD-M1005 Subwoofer Amp Problem

He may be right! You might try finding a new source of contact for your ground cause it may not be sufficent enough to ground to, also make sure that no wires from the back of your radio have any wires sticking out touching other interfering things that could possibly be causing the noise

SOURCE: alpine mrd-m501 amp

the subs cant handle all the power you got it set on turn off all the settings and then turn off your car and remove your face plate and then it should be ok. it does that because the subs cant handle the settings you might just have them a lil high 

SOURCE: no sound on my alpine mrd m501

 No sound is produced. ? The output disable mode is turned on. ? Refer to the instructions at ?Output Disable Mode? to turn the output disable mode off.