Replacing Head Unit... how to integrate BOSE amp/speakers - Mazda Forum
Reply
 
LinkBack Thread Tools
post #1 of 25 (permalink) Old 02-23-2009, 04:41 AM Thread Starter
MazdaWorld Member
 
task514@hotmail.com's Avatar
 
Join Date: Feb 2008
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
So here I am replacing the BOSE HU with a Pioneer HU.
The amp and speaker don't like it... They're staying silent.

How do I power on the amp? I connected the blue remote wire, but still no go.
How does the amp work? pinouts, inputs, outputs...

I have the wiring diagrams manual. But it doesn't help.
task514@hotmail.com is offline  
Sponsored Links
Advertisement
 
post #2 of 25 (permalink) Old 02-23-2009, 04:59 AM Thread Starter
MazdaWorld Member
 
task514@hotmail.com's Avatar
 
Join Date: Feb 2008
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Nevermind...
I need a Hi/Lo converter...

If it is something else, please enlighten me!
task514@hotmail.com is offline  
post #3 of 25 (permalink) Old 02-23-2009, 02:56 PM
Silver Member
 
Matt64341's Avatar
 
Join Date: Jun 2007
Location: New Hampshire
Posts: 991
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Nevermind...
I need a Hi/Lo converter...

If it is something else, please enlighten me![/b]
The problem is that the bose headunit doesn't amplify the signal at all, so it is a line (low) level output. When you swap that out you are putting in an amplified high level output in its place. That will not go over well with the bose amps. I don't know how the amp/amps are hooked up to the headunit in the 01, but it is probably a harness instead of RCAs. When I had mine apart the other day, I could not find the power wire for the amps on the harness, so I believe that they are powered through a relay somewhere, which is why I couldn't see it with my meter, so hooking up the amp wire should give you power. If you pull the harness off the bose amp and take a multimeter set to voltage, touch the black lead to ground and the red to each pin on the harness and you should see 12 volts somewhere.

You have a few options on how to go from here.
Run the high level wires from the headunit directly to each speaker (you would have to check the impedance of the bose speakers to see if this is possible)
or you could do the first option while swapping in aftermarket speakers.
Wire in a line level converter between the headunit and the bose amps
Wire the preamp outputs on your headunit to the bose amps
Swap in aftermarket amps

If it were me I would probably go for aftermarket speakers amplified by the headunit's internal amplifier. The cheapest option is using the line level converter, but you might find that there is a lot more wiring and identifying wires involved. Let me know if you want more info on any of the options.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1995 Millenia S
Parts Now For Sale

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Matt64341 is offline  
Sponsored Links
Advertisement
 
post #4 of 25 (permalink) Old 02-23-2009, 03:30 PM
Platinum Member
 
Join Date: May 2005
Location: Houston, TX
Posts: 3,641
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Line level converters are all around crap. They were sort of a hack brought out in the early days of DIY audio amplification. Uber crappy amps along the lines of Pyramid, Jensen... all had them built in. I can guarantee you won't be happy with your audio quality after using one of them. Signal loss is terrible and the introduced noise makes you want to pull your hair out.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Looking for a Hi-Output Alternator for your Millenia? Contact me.. I'll build you one.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

ASME SME SAE
yel-low is offline  
post #5 of 25 (permalink) Old 02-23-2009, 09:51 PM Thread Starter
MazdaWorld Member
 
task514@hotmail.com's Avatar
 
Join Date: Feb 2008
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Never never mind...

I was just dumb, the remote wire wasn't connected, because the pin in the harness wasn't pushed in all the way in.

Now it works, plays pretty well with the Pioneer's amp, but the volume get too loud too early... turn it up to 12 and its loud already (loud but clear).

My Pioneer has pre-amp outputs, I'm gonna try to connect the BOSE amp to those outputs.
task514@hotmail.com is offline  
post #6 of 25 (permalink) Old 02-23-2009, 09:54 PM Thread Starter
MazdaWorld Member
 
task514@hotmail.com's Avatar
 
Join Date: Feb 2008
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
BTW, the amp has a remote wire that is connected to the woofer's relay... Just connect the remote wire and your amp should turn on.
You might need to switch the pin to the right location on your harness. The remote is not at the usual Mazda pin out location.
The amp is also directly connected to a batt+ source.

If you need schematics, I can help you. I've got them all.
task514@hotmail.com is offline  
post #7 of 25 (permalink) Old 02-23-2009, 10:36 PM
Mazda Newbie
 
Join Date: Feb 2009
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
BTW, the amp has a remote wire that is connected to the woofer's relay... Just connect the remote wire and your amp should turn on.
You might need to switch the pin to the right location on your harness. The remote is not at the usual Mazda pin out location.
The amp is also directly connected to a batt+ source.

If you need schematics, I can help you. I've got them all.[/b]

Wow, schems would be helpful. I just got my Milly ready for a Hu install. I have my Dual HD Deck ready to go. I will proly go the route using my line level amp outs for the rears. Any useful options for the fronts or does the Bose amp do that too?
hondaman603@comcast.net is offline  
post #8 of 25 (permalink) Old 02-23-2009, 11:22 PM Thread Starter
MazdaWorld Member
 
task514@hotmail.com's Avatar
 
Join Date: Feb 2008
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
For what year are you looking for?
task514@hotmail.com is offline  
post #9 of 25 (permalink) Old 02-25-2009, 08:34 PM
Mazda Newbie
 
Join Date: Feb 2009
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
For what year are you looking for?[/b]
I have a 1998 2.5L with the Bose system.
hondaman603@comcast.net is offline  
post #10 of 25 (permalink) Old 02-26-2009, 12:24 AM
Silver Member
 
Matt64341's Avatar
 
Join Date: Jun 2007
Location: New Hampshire
Posts: 991
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
See if either of these are a match for your headunit

http://www.carstereohelp.net/images/Wireha...nia03180201.jpg

The top is for the 95-96 bose, and I think the bottom could be 97-98, but I cannot confirm that.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1995 Millenia S
Parts Now For Sale

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Matt64341 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mazda Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome