JBL 600.1 Pre-out Voltage dial is reverse?!
#1
JBL 600.1 Pre-out Voltage dial is reverse?!
I have the JBL 600.1 mono subwoofer amp that has a dial on the side of it that you select you pre-out voltage. The deck I run is a Clarion DXZ715 that has a 4 volt pre-out, but when I turn the dial on the amp to 4 volts, there is no sound what so ever, but as I turn the voltage dial on the amp away from 4 volts the bass gets louder and louder. Anyone else have that problem or am I doing something wrong or is the amp defective?
#2
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Car: 89 Camaro RS
Engine: sbc 400
Transmission: th350
you dont want to turn it all the way down. an amp is not supposed to get louder if you have more powerful outs (like 4 volts). you have the higher settings for using recievers that have weaker preouts. another thing to note is that the 4 volts is usually the max out. although you are supposed to match the amp and HU, it does not mean it has to be a 1:1 ratio. some people will turn the amp up higher to get more bass. a good test cd will give instructions how to do this. another method i had found was in a car audio magazine using a cheap radio shack amplified speakers. however, since i don't have the article here and i just woke up from a nap (sorry if i dont make sense at times), i cant go into the details. do a search around the boards at www.carsound.com and you should be able to find the details.
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