Help with my 500.4Ti

[Sha-Boogey]

Hello and glad to be a new member to the PG Community. I have recently purchased a 500.4Ti series from a long time friend. he's been the one and only owner of this amp, kept his word and when finally selling it, i was the first to know. its been sitting in his garage for quite some time and said it was working 100% when pulled out.

My old setup goes as follows,
Alpine HU CD-105
Polk Audio MM6501 Components (Front Stage)
Hifonics HFi series 4 channel amp. Bridged the rears for the sub.
Crossfire BMF 12" Sub

I never encountered any problems with this setup but i couldn't wait to install the Ti series. I made sure my connections were correct and the swap was fairly easy. Fan blows and amp turns on perfectly. when hooked up, i first noticed my driver side door was strictly static and barley any music coming from that channel. passenger door sounds clean and crisp. i swapped the cables and concluded that one of the Front (R+) side is causing this problem. i tried doing the same setup for my sub by bridging the rears but the bass is just not there like my other amp had. i understand its a 4 channel amp made for highs and miss but is there anyway i can fix this problem. also the blue LED do not work. I left both speakers hooked up to one channel (Front bridged). any suggestions would be appreciated.

[Eric D]

Step one is to repeatedly turn all the controls on the amp. This includes the crossover setup selector and the gain, bass, and frequency controls.

Crud builds up in these controls, and when the amps sit for a long time, they tend to not conduct electricity properly.

Your problem may be more than just this, but trying this is a good place to start, and it does not cost anything.

[Sha-Boogey]

Cleaned as much as possible and still no sound. i went further into testing the rear channels and non seem to work. all of the rear channels seem to have power coming to them but no clear music. just hmming and fuzz. hopes this helps.

[audiophyle_247]

How or what did you clean & with what? As Eric above mentioned, the adjuster pots are a self cleaning setup so you need to manually crank the back & forth 15-20 times to get them going strong.

Try wiggling the input selector while the amp is on & see if the channels start to make noise. I have a 475ti that a rear channel cuts out when I wiggle the input selector dial on it.

[Drock]

My 500.4 did the same thing and I did exactly what Eric recommended. After a few twists and turns the amp was golden again.


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