Hi,<br>I'm planning on having the Bose headunit replaced with the Blaupunkt Toronto and was wondering if there were any concerns with using the speakers. I understand that they are amplified in some manner, and didn't know if this would cause some problems. Has anyone done this? If so, were there any concerns? I just want to be prepared and have everything in order. Thanks in advance.<p>Phil.<br>98 2.8QMS<br>

Phil,<br>I just replaced the Audi Delta head unit of my 96 2.8 with a Sony CDX-C680 CDP/Radio. I'm now having problems with FM reception and I need a different antenna adapter to turn on the A4 antenna amp. Also have disturbing background noise through the factory amps - currently looking into a fix. I'm not too worried about alleviating these problems though - should be pretty straightforward. Also have Sony changer in the trunk. I will probably keep the factory (Bose) system speakers...<br>good luck.<br>

I had this setup as a transition to a full install. I had changed the head unit (with external amps) before changing the speakers. The sound I experienced was not that good. I think Bose uses alot of equalization to compensate for the different components. <p>The speakers in my Bose car were 2 ohms so you will need amps that can handle that type of load.<p>The factory Bose amp is located under the rear deck in the trunk (driver's side). <p>I don't know if others in the forum have attemped to hook up an aftermarket head with the stock amp and speakers. If you really want to better the sound, I would suggest doing a simple full install (head, amp, speakers).<p>This is just my opinion though. Sound is very personal so many different systems will be suitable to different people. Good luck!<p>Eric

"I don't know if others in the forum have attemped to hook up an aftermarket head with the stock amp and speakers." - that's what I did (see below). However, I really did this to get an in-dash CD accessibility (sp.) and direct access to my changer rather than improve the sound to any great extent. (I'm much more interested in home audio than car audio).

I did. I replaced the stock headunit with a Clarion DRX9375R (which has no power output). I ran a 1 ohm stable 50*4 amp with output connections spliced into the stock harness that goes into teh bose amp. It was a b*tch, but when i finished i had a better sounding system and it can be taken out in under an hour when i go to sell the car. ALSO, send high pass only to the front speakers, it makes a world of difference.