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By looking at the Siemens VDO website, I would say they make some decent aftermarket heads. I doubt that GM would have the vette's base stereo performance specs. would be anywhere near that of any decent aftermarket unit.
I know the Alpine unit I installed made a big difference in sound and clarity using the base amp and speakers.
I don't know if your'e Corvette is a C-6 or not but when you installed the Alpine stereo were there any problems with the computers and the stereo you installed?
So Seimens is the head unit for the 1SA stereo and the 1SB stereo on our Corvettes? The 1SB has "BOSE" written across the speakers?
How does Seimens compare to sony, Pioneer, Alpine, Delco?
I think comparing Siemens to Delco is far more apples-to-apples than comparing them to Sony, Alpine or Pioneer. Siemens and Delco are industrial giants that happen to have an electronics division. The other 3 are consumer electronics companies. While you can never paint with a brush broad enough to use the word *always* it's a safe bet that the designers at a consumer electronics company are going to produce better audible results than a company that is more interested in vehicle integration.
Originally Posted by LS WON
I don't know if your'e Corvette is a C-6 or not but when you installed the Alpine stereo were there any problems with the computers and the stereo you installed?
You can swap out the factory head and have no trouble. The only problem you would run into is if you tried to put a factory head from a DIFFERENT car into your car - that head would have the VIN registered in it's memory and would have to be reprogrammed by the dealer. Aftermarket units do not have that programming.
I remember you mentioning in another thread that you liked the functionality of the stock unit. If you are considering switching I really would try to get the problem you're having taken care of at a dealer before going any farther because you WILL lose some of that functionality (speed dependent volume for instance) with an aftermarket unit, but of course you'll also pick up features that stock doesn't have. YMMV.
I don't know if your'e Corvette is a C-6 or not but when you installed the Alpine stereo were there any problems with the computers and the stereo you installed?
I have an 06, C6. I had a base US* radio/cd with U66 speakers.
No probelms at all. The new Alpine installed fine with no glitches.
There were a few items that had to be included in the kit from Crutchfields.
1. An antenna adapter. The GM antenna plug is smaller than standard plugs so there is an adapter to fit the Alpine to the facyory plug.
2. The safety door chime circuitry is routed through the GM harness and through the GM radio. Crutchfield provides a harness and the chime that uses the factory GM connector so you can remove the stock radio and simply plug in the Alpine and keep the safety chime. Of course, you do have to solder this harness to the harness that comes with the Alpine. Straight up color for color wiring. Quite simple.
The toughest part of the whole install was getting the power plug disconnected from the console.
I have a step by step write up on the install if you want to e-mail me I'll send it.
I have an 06, C6. I had a base US* radio/cd with U66 speakers.
No probelms at all. The new Alpine installed fine with no glitches.
There were a few items that had to be included in the kit from Crutchfields.
1. An antenna adapter. The GM antenna plug is smaller than standard plugs so there is an adapter to fit the Alpine to the facyory plug.
2. The safety door chime circuitry is routed through the GM harness and through the GM radio. Crutchfield provides a harness and the chime that uses the factory GM connector so you can remove the stock radio and simply plug in the Alpine and keep the safety chime. Of course, you do have to solder this harness to the harness that comes with the Alpine. Straight up color for color wiring. Quite simple.
The toughest part of the whole install was getting the power plug disconnected from the console.
I have a step by step write up on the install if you want to e-mail me I'll send it.
So your base model was only able to put in 1 -CD disk at a time?
If I go aftermarket I will definitely have to find a reputable shop that has done sucessful work on C-6 Corvettes.
I think comparing Siemens to Delco is far more apples-to-apples than comparing them to Sony, Alpine or Pioneer. Siemens and Delco are industrial giants that happen to have an electronics division. The other 3 are consumer electronics companies. While you can never paint with a brush broad enough to use the word *always* it's a safe bet that the designers at a consumer electronics company are going to produce better audible results than a company that is more interested in vehicle integration.
You can swap out the factory head and have no trouble. The only problem you would run into is if you tried to put a factory head from a DIFFERENT car into your car - that head would have the VIN registered in it's memory and would have to be reprogrammed by the dealer. Aftermarket units do not have that programming.
I remember you mentioning in another thread that you liked the functionality of the stock unit. If you are considering switching I really would try to get the problem you're having taken care of at a dealer before going any farther because you WILL lose some of that functionality (speed dependent volume for instance) with an aftermarket unit, but of course you'll also pick up features that stock doesn't have. YMMV.
Perhaps that's the reason my Sony system on other car sounds as good if not better than the factory 05 unit made by Siemens. Plus as previously mentioned I have 6 speakers 2 high 2 mid and 2 bass Alpine and infinity with ADS amp but lets remember this is 1988 on a regular whip antenna. I remember on one of my cars it had a factory Delco head unit with a windshield antenna and it was terrible. so I had the windshield antenna changed to a power antenna by Hirschman? On a switch with a switchable preamp.
I think comparing Siemens to Delco is far more apples-to-apples than comparing them to Sony, Alpine or Pioneer. Siemens and Delco are industrial giants that happen to have an electronics division. The other 3 are consumer electronics companies. While you can never paint with a brush broad enough to use the word *always* it's a safe bet that the designers at a consumer electronics company are going to produce better audible results than a company that is more interested in vehicle integration.
You can swap out the factory head and have no trouble. The only problem you would run into is if you tried to put a factory head from a DIFFERENT car into your car - that head would have the VIN registered in it's memory and would have to be reprogrammed by the dealer. Aftermarket units do not have that programming.
I remember you mentioning in another thread that you liked the functionality of the stock unit. If you are considering switching I really would try to get the problem you're having taken care of at a dealer before going any farther because you WILL lose some of that functionality (speed dependent volume for instance) with an aftermarket unit, but of course you'll also pick up features that stock doesn't have. YMMV.
Will have dealer look into diversity antenna and connections. I like the auto volume feature of factory unit.