1SCKLS1

iTrader: (5)

Hey guys I recently picked up a alpine power pack 445 used and I have a alpine head unit cde 121 says it's plug and play with my unit radio turns on but no sound I can't figure out what is wrong the car is 99 camaro ss doesn't have the factory amp in the rear were the spar tire is any help would be appreciated

tophatjimmy

iTrader: (1)

Does the car have all the speakers in the car currently?
I know that on some versions of the 445, it won't make sound unless there is a load (speaker) on each of the outputs.

_JB_

iTrader: (33)

I cannot remember what CDE Alpine I have but there's an option for an external amp, maybe you need to change it? I want to say it's called Power IC or something similar.

DANOZ28

iTrader: (1)

well , i believe my installer had to bypass the factory amp to get my new stereo to work. that was an extra hundo out of my pocket. just an idea since i didnt install myself. ps i have the alpine mini amp with alpine R speakers however i went with a kenwood deck which also added rewiring costs.

WhiteBird00

iTrader: (4)

Unfortunately, that's not a true measure. Resistance and impedance are not the same and you will generally get a resistance reading of around 3 ohms on a 4 ohm speaker.

1999nbmZ

Understood. I was only trying to relay that I have had problems with speaker brands that MEASURE less than 4 ohms, causing the amps to shut down trying to protect themselves. Saw that too many times to count with Infinity speakers wired directly to Kenwood head units.

Never mind, I'm sure all of the equipment will work perfectly together.