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HiFi option audio quality - problem solved

jimcook

New member
Sorry if everyone knows this already...

I'm the lucky owner of 3 months of a 1998 C4S. Love it!

It has the factory fitted Hi-Fi option however the audio quality has been bugging me - I couldn't believe that even 14 years ago, a hi-fi optioned car's audio system could sound so poor - flat sound and no bass

I swapped the Sony radio and CD changer that were in the car when I bought it for an Alpine head unit + Bluetooth. Worked OK-ish, problem with FM reception (next on the list) but still no bass.

After much exploration, £10's worth of bits and some soldering the bass problem is now solved.

When the Sony head unit was fitted someone realised that to connect to the in-car amplifier (under the driver's seat on RHD models) an attenuator was needed to lower the signal level from speaker level to line. This was fitted in a little plastic box about 75mm x 35mm x 20mm, with a speaker connector on one end and an 8 pin DIN socket on the other.

This was the culprit - with various resistors and capacitors doing horrible things to the audio.

My new Alpine head unit has line level outputs for connecting to an external amplifier (probably on many higher-end head units as well).

Some components from RS and 1/2hr with a soldering iron and I had a new lead to connect line outputs directly to the OEM amplifier - which made all the difference [:)]

Sound is now very good. Not quite like the youngsters with their Astras, but very adequate.

I would be happy to help anyone in a similar position - happy to post details of the lead and components if requested.

Next on the list is the rubbish FM reception.

Best regards
Jim Cook
 
Welcome Jim

Glad to see you joining in, it shouldnt be that flat with a 12 speaker system!

The fragile FM aerial connection to the filaments built into the windscreen I believe is behind the dials and sometimes gets dislodged by windscreen fitters. In your case as the window isnt recent, then you may have dislodged it or disconnected the wire from the small amp in the dash whilst removing or fitting the new one.

You will need Christian the assistant RO help to tell you precisely where they are, hopefully he will see the posting and respond if he doesnt and nobody else can help, then send him a PM.
 


My Favourite sound system in my 993?

Tune in by opening three things in this order. The window, your ears and then the loud pedal! [;)]
 

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