Radio problem Omega Elite

Sounds like it comes with some sort of standard amp. Probably hidden under the dash somewhere.

If this is the case, you'll need to bypass that and drive the speakers directly from the head unit.

The speed dependent volume control is done by the radio and some have a mute facility for when a telephone is in use.

On some models there is a sound processor and two sub-woofers in the rear in addition to the normal 4 speakers and tweeters. It looks as though fuse F6 is present if you have this sound processor. A Radio without the sound processor has 21 wires and with it 18 (including earth and aerial).

If there is no sound processor the connections are directly to the speakers. The circuit in the Haynes manual is very hard to read because it's been reduced so much but it looks as though the telephone mute lead is a black one.

I don't know if any of this will be of any help but that's just about all I can read. I don't have a scanner so I can't scan the diagram but I doubt if it would be readable anyway.

The radios I've seen with speed related volume control just had a tacho input on the ISO connector into the radio, the radio handled the volume change.

Zero ohms is correct if you m,easure a speaker resistance with a multimeter - they are pure inductive devices, they offer a 'nominal' 4 ohms or whatever resistance but only to an AC signal. A DC test voltage from a multimeter will see them as a piece of wire.

Does the head unit have separate RCA outputs for an amplifier? It's possible it has an option to turn off it's internal amp if you are using an external one (which I don't think you have).

Car radio amps usually use a 'bridge' configuration for extra power from the low voltage. This means that by randomly connecting speaker wires to each other or to ground you can blow the main amplifier(s) inside and kill the radio. Be careful with those bullet connectors!

Speakers are not pure inductive devices, they have an impedance which is part inductive & part resistive. [Impedance=sqrt(Resistance^2)x(InductiveReactance^2)]

Put a decent meter across any speaker and it will read pretty close to its stated impedance.

Zero Ohms would indicate a short circuit, which could quite easily, and very quickly damage the wirelesses output devices.

J. A. Chewer..

If it does have an additional output amp you should be able to unplug and bypss this. I haven't bothered to remove the factory radio from my Omega, but my wife's Toyota Previa had the additional amp (the radio Toyota fit has no output amp). It's the output amp that fails (it uses non-standard transistors so is virtually unrepairable and can't be bought as a replacement part!). I successfully bypassed it - in the Toyota it lives above the passenger footwell on the bulkhead - so retaining the original speakers. It just takes a bit of detective work with a meter.

THat's burgerman fooked then. He's still trying to figure out how to indicate a negative voltage on the AC range of a multimeter so he can prove I'm wrong.

Some of the high spec (elite) Omegas came with a bose sound system and for further info contact the boys on cavweb forums