2 questions...

I have a BOSE and,

1. If I were to buy a new head unit, would I have to bypass the amps?
2. Need to know how to remove the stock HU in order to do so.

 

Yes, bypass the amps. There is probably a way to make it work with the amps, but remember they are also equalizers and are not intended for that purpose. It is likely that you could blow an internal fuse on the amplifiers. There is less overall resistance, simpler circuitry, and you would be using your equipment correctly if you were to bypass the amps. There is no reason to keep them there, unless you still plan on running a line signal to them from your head unit, which I do not reccommend.

To remove the stock bose system, just take apart your dash and take it out. I'm sure many here could describe it more in detail, but in all honesty no one here can educate you nearly as much on this as you could educate yourself by just taking a first-hand look. To install an aftermarket head unit, make sure you get proper installation tools:

Connector Kit
Installation Mount
Wiring Harness

 

1. No you don't need to bypass the amps.There are pleanty of companys that offer a level adjustment adapter for use with the Bose setup. I'm using a "PAC" adapter with my Kenwood DDX-7015. The adapter will run you any where from 25 to 75 bucks. That's a hell of a lot cheaper than replacing all your speakers. Sound perfectly.

2. To remove your bose head unit first remove the plastic trim plate around the shifter.after you remove that there is 1 screw holding in the ash tray. remove the screw and the other side has a clip, just pull out the ash tray and it will release.Then your gonna need a hook tool or use a flat head screwdriver( but be careful with it) the upper vents in the center where the clock is. From the side gently pull it out from the sides. It'll pop out when you put enuf pressure on it. Then remove the 4 screws which hold in the a/c controls, radio, slide out tray. WA LA you just removed you Bose Head unit.
Bose adapters

 

you need the bypass to switch the speaker outputs to an low level output because bose factory speakers use an low unbalanced preout as their turn on. sometimes you have a problem with using the bypass modual have problems. i had that problem

 

You CAN use the existing Bose speakers with an aftermarket HU. As a previous poster said, you need a level adjustment adapter. I'm using the Scosche unit provided from Crutchfield for about $50 along with a Clarion double DIN HU with NO problems. When you connect the HU, the trick is to remember that EACH speaker has it's OWN AMP. So you must connect the AMP TURN on wire on the HU to the amp turn on wire on the factory harness. IF you don't you will not get ANY sound.
Removing the HU is pretty easy. Check the stereo section for more info.

 

That might not be the case. What is the casing of the speaker? Is the Amp and the driver/cone welded together?

I've put many speakers together from spare parts, in three weeks maybe I will do a write-up on bypassing the amps, if I can do it.

Also, you can find four speakers (together) on ebay that are better and $50.
Link

 

bose speakers are an 8 ohm speaker using the radio or even an amp to drive them. output would be very low.

 

decker amps and speakers are sparate

 

how does this adapter effect the sound quality? I was told about a line convereter for subs on the stock unit and it killed the sound. Will this do the same?

 

I see your from NY Hopeless junkyard. Humm that could either be Huntspoint or Collage point. Either way your welcome to swing by me and take a listen for your self.

 

Hopeless junkyard = Hopewell junction...close enough though..ever heard of it?

 

Humm That's not in the City is it? I've never heard of it. I'm in Queens, So if you want to swing by a take a listen Just let me know. Joe

 

Im down by poughkeepsie...actually about 5 miles from it. Is the quality good?

 

I actually just called up a Car stereo place, and they were telling me that the adapter is no good, he said before the kid left the lot it fried.

 

False. Aftermarket HU's generally have output much greater than that of the original BOSE self-amps. Aftermarket head units can easily handle an 8ohm driver. If you don't believe me, try it yourself. I have connected many 8-ohm drivers before.

 

tonight i will meter out one of my factory bose speakers and see what the resistence is. i know with my car the installers wire the front left an rear left together in parallel inorder to get the speakers working right w/ the amps bypassed

 

Well I have one on mine and my head unit it almost $1200.00 not one bit of trouble! Some guys just tap in the high level speaker output to the bose speakers, Not recommended to do, But it save them some $$. The factory Bose speaker signal is higher voltage than standard RCA's but low than high level speaker output from the Head unit. The sound quailty is perfect match up for the Bose. Before some guys chime in and say that it not all that. I'm stating how it sound compared to the factory Bose. Ya I could put in another 500 - 700 bucks and make some top quality sound. Like I stated before your welcome to stop by my shop and take a listen for your self.

 

taking the trip out there is to much. Its a bit of a ride. All in all your saying I should go for it? How does it sound with an amp and subs?

 

Mine sounds Perfectly. And my radio has a seprate output for subs and my 12" Kicker sound awesome. I would recommend against not using a level adapter. They make them for a reason. I'm sure you be happy with it.

 

What are your levels set to on the adapter?

 

Slightly past half way and before 3/4. You don't want to go too high or your gonna get distortion.

 

This is the adapter I bought...recommended by crutch field..

Scosche OEM Amplifier Adapter

 

That will work out fine! Good luck and enjoy your new Radio!

 

yeh I also got the Scocshe OEM amp adapter for my system...i bought i brand new from a fellow orger for only 19 bucks shipped so I got a steal there. Im actually getting my system put in on Monday or Tuesday so I will keep you updated on if it really helps and makes the install a lot easier.

 

Thanks alot for the help man, youve been great. Ill let you know how it all turns out.