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Old 12-15-2021, 03:30 PM   #1
propav8r
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Default SC-811 Amplifier?

Hey, so I have a 95 960 that has the SC-811 radio in it. It sounds...really bad. The weird part is that it sounds way worse when the car has been sitting overnight in the cold, and it starts to sound a bit better as the car (or radio? Or amp?) warms up.

Currently I only have audio in the front door speakers, and only barely at that.

I'm seriously considering ripping everything out and building an audio system for this thing since that's all you can REALLY do with a 960 anyway without a huge amount of effort.

But I figure I may put a little effort into fixing the stock system before I go whole hog.

Which brings me to the actual question...did the SC-811 head unit use an amp? I'm wondering if maybe the head unit is fine but the amp is dying.

If there's no amp, it's probably something screwed up in the head unit.
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Old 12-15-2021, 03:35 PM   #2
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Have you pulled the stereo out and looked for a cable running to an amp? I'm looking at one of the 960 factory stereos right now and there is a cable socket on the back of it labeled amp.
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Old 12-15-2021, 03:42 PM   #3
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Have you pulled the stereo out and looked for a cable running to an amp? I'm looking at one of the 960 factory stereos right now and there is a cable socket on the back of it labeled amp.
Nope. That would've been too easy.

Lemme go do that.
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Old 12-15-2021, 03:49 PM   #4
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No amp connection, so looks like the head unit is junk. It's pre-wired for a CD changer though, so that would be awesome if it was 1996.
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Old 12-15-2021, 05:12 PM   #5
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I’m pretty sure the stock head unit in a 95 960 comes with a built in amp. It’s not a separate unit. That being said, mine always sounded pretty great, but it was owned by an old lady before me who only listened to npr.
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Old 12-15-2021, 07:49 PM   #6
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You can also upgrade the SC-811 to SC-815 (which also has an internal amplifier).

I sell tested units for $50 shipped if you want to buy one.
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Old 12-15-2021, 08:37 PM   #7
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My 240 has a Sony head unit that is about a year old and have similar problem. Does not have a amp. Different temperature causes different sound quality.
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Old 12-15-2021, 11:47 PM   #8
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That''s typically indicative of corrosion in/on connectors or grounding points in the PCB. a little skin of corrosion forms, then as you put some voltage through it, or heat it up the stuff moves around and either starts making better contact or it doesn't.
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