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Old Mar 20, 2015 | 12:31 PM
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Default Speaker replacement

Hello All,

I wanted to see if you guys had some ideas on speaker replacement. I have the crappy bose system right now. I plan on keeping the Nav, I just want to change out all four speakers and the (Twiddlers) and install a better amp Not trying to spend thousands of dollars. Just get a nice upgrade over the bose system.
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Old Mar 20, 2015 | 12:37 PM
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Originally Posted by RaysLilVette
Hello All,

I wanted to see if you guys had some ideas on speaker replacement. I have the crappy bose system right now. I plan on keeping the Nav, I just want to change out all four speakers and the (Twiddlers) and install a better amp Not trying to spend thousands of dollars. Just get a nice upgrade over the bose system.
You would probably get a better response if this question was asked in the "Audio/Electonics" section.

There are a lot of helpful and expert members/vendors that frequent that section.

I learned a lot over there and replaced my whole system.
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Old Mar 21, 2015 | 12:35 AM
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Originally Posted by ncvette_1FUNRIDE
You would probably get a better response if this question was asked in the "Audio/Electonics" section.

There are a lot of helpful and expert members/vendors that frequent that section.

I learned a lot over there and replaced my whole system.
Call Dennis at DD Mods. Check their website.
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Old Mar 21, 2015 | 09:33 AM
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You can't just change out the 10" Bose speakers in the doors as they are amped from the Bose amp in the passenger side footwell left of the fuse panel
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Old Mar 21, 2015 | 12:31 PM
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Originally Posted by RoadkingC6
You can't just change out the 10" Bose speakers in the doors as they are amped from the Bose amp in the passenger side footwell left of the fuse panel
No, the 10" door speakers have an amp built right into each one. The amp in the foot well powers the smaller speakers in the front and rear.
I kept my factory nav and added pre-amp out RCA cables that connect to aftermarket amps. One amp for the doors, one for the sub in the rear.

Pre-amp harness plug and play in the factory harness and HU.


Polk components with adapter plates for the doors.


Amps inside Vettbin behind the seats.




12" sub in the back.


Also disconnected center dash speaker. I left the rear speakers alone. They are still connected to the factory amp.

BTW, I learned how to do everything from reading THIS thread.

Last edited by EVRose; Mar 21, 2015 at 12:47 PM.
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Old Mar 21, 2015 | 12:52 PM
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Nice job Eric, looks, and I'll bet sounds, great!

Man, I saved myself a lot of time, effort, and money, by accepting the Bose system, as, "good enough for me."

The frequency response, and dynamic range of the Bose system, would have been unacceptable to me even 20 years ago, by the standards of 1995.

However, now,....it's good enough. Priorities change I guess. Nice job!
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Old Mar 21, 2015 | 01:20 PM
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Originally Posted by EVRose
No, the 10" door speakers have an amp built right into each one. The amp in the foot well powers the smaller speakers in the front and rear.
I kept my factory nav and added pre-amp out RCA cables that connect to aftermarket amps. One amp for the doors, one for the sub in the rear.

Pre-amp harness plug and play in the factory harness and HU.


Polk components with adapter plates for the doors.


Amps inside Vettbin behind the seats.




12" sub in the back.


Also disconnected center dash speaker. I left the rear speakers alone. They are still connected to the factory amp.

BTW, I learned how to do everything from reading THIS thread.
With your sub sitting out in the open like that, with no grill or other protection, how do you keep from damaging it with anything you put in the hatch ... like golf clubs? Or did you just take the grill off for the photo?
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Old Mar 21, 2015 | 01:24 PM
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Before you spend much try replacing the 31/2 inch speakers in doors with decent speakers and disconnect the center speaker. I hated the stock Bose. This small change made a dramatic improvement. Good luck
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Old Mar 21, 2015 | 02:32 PM
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Originally Posted by RocketDawg
With your sub sitting out in the open like that, with no grill or other protection, how do you keep from damaging it with anything you put in the hatch ... like golf clubs? Or did you just take the grill off for the photo?
I dont usually put anything back there but the roof and it wouldnt lock in place with a grill on that woofer. Four years like that with no damage.
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Old Mar 21, 2015 | 02:46 PM
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polk is pure garbage!! when i had my toyota i replaced the crappy oem speakers with polk thinking it would sound so much better, was i disappointed. the bose to me is good enough especially when playing music via the flash drives. i think a good quality set of pioneers are better than polk. jmo
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Old Mar 21, 2015 | 03:00 PM
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Originally Posted by billyboy47
...polk is pure garbage!!
Geeeze!
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Old Mar 21, 2015 | 03:57 PM
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Originally Posted by billyboy47
polk is pure garbage!! when i had my toyota i replaced the crappy oem speakers with polk thinking it would sound so much better, was i disappointed. the bose to me is good enough especially when playing music via the flash drives. i think a good quality set of pioneers are better than polk. jmo
Then you must have did it wrong plain and simple.
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Old Mar 21, 2015 | 03:59 PM
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Originally Posted by Hameister
Nice job Eric, looks, and I'll bet sounds, great!

Man, I saved myself a lot of time, effort, and money, by accepting the Bose system, as, "good enough for me."

The frequency response, and dynamic range of the Bose system, would have been unacceptable to me even 20 years ago, by the standards of 1995.

However, now,....it's good enough. Priorities change I guess. Nice job!
Yep, the sound quality is far superior to what came factory.
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Old Mar 21, 2015 | 04:30 PM
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While I'm not pretending that the Bose system sounds great, it did test surprisingly well.

I did an acoustic analysis and found the system to have a quite flat and extended frequency response.

I think the major short-comings are the lack of separate tweeters as the mid-high "twiddlers" lack detail and crispness, and expecting the door structure to support the 10" woofer/subs is asking a lot.

IMHO the overall installation is rather clever with the woofer's amp integrated with the speaker and given the rather severe space limitations and acoustic anomalies present in the Vette's interior (especially the vert) the OEM system does a decent job juggling the compromises.

The one saving grace is that the head unit's output is flat with all the unique Bose EQ/tweaks being performed in the amps. This makes the amp/speaker upgrade a little easier.

Adding acoustic treatment (Dynamat for example) helps immensely, as does stiffening the doors/panels.


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Old Mar 21, 2015 | 04:53 PM
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Originally Posted by RaysLilVette
Hello All,

I wanted to see if you guys had some ideas on speaker replacement. I have the crappy bose system right now. I plan on keeping the Nav, I just want to change out all four speakers and the (Twiddlers) and install a better amp Not trying to spend thousands of dollars. Just get a nice upgrade over the bose system.
The best bang for the buck is to replace the 3 1/2 speakers in the door and center dash. I have a 06 with the POS Bose. Their speakers are cheap paper cone units. I replaced mine with Polk DB351. Had to adapt the wire connector, but was not an issue. Left the Bose sub woofer as that does ok. Would not believe the difference. Would have to spend a lot more $ to get better sound.
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Old Mar 21, 2015 | 05:12 PM
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Originally Posted by EVRose
Then you must have did it wrong plain and simple.
no, even their home speakers suck. i'd rather have jbl in my car over polk. jmo
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Old Mar 21, 2015 | 05:17 PM
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Originally Posted by **** Jockey
While I'm not pretending that the Bose system sounds great, it did test surprisingly well.

I did an acoustic analysis and found the system to have a quite flat and extended frequency response.

I think the major short-comings are the lack of separate tweeters as the mid-high "twiddlers" lack detail and crispness, and expecting the door structure to support the 10" woofer/subs is asking a lot.

IMHO the overall installation is rather clever with the woofer's amp integrated with the speaker and given the rather severe space limitations and acoustic anomalies present in the Vette's interior (especially the vert) the OEM system does a decent job juggling the compromises.

The one saving grace is that the head unit's output is flat with all the unique Bose EQ/tweaks being performed in the amps. This makes the amp/speaker upgrade a little easier.

Adding acoustic treatment (Dynamat for example) helps immensely, as does stiffening the doors/panels.


and i'm quite satisfied with the bose system in my car and in my home. how many members really listen to their car stereo anyway?
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Old Mar 21, 2015 | 05:18 PM
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Originally Posted by Hameister
Geeeze!
is that your only expression?
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Old Mar 21, 2015 | 05:34 PM
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Originally Posted by billyboy47
and i'm quite satisfied with the bose system in my car and in my home. how many members really listen to their car stereo anyway?
I do and I like it loud and clear. Thats why I got rid of the bose speakers and amp.
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Old Mar 21, 2015 | 07:59 PM
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Originally Posted by **** Jockey
While I'm not pretending that the Bose system sounds great, it did test surprisingly well.

I did an acoustic analysis and found the system to have a quite flat and extended frequency response.

I think the major short-comings are the lack of separate tweeters as the mid-high "twiddlers" lack detail and crispness, and expecting the door structure to support the 10" woofer/subs is asking a lot.

IMHO the overall installation is rather clever with the woofer's amp integrated with the speaker and given the rather severe space limitations and acoustic anomalies present in the Vette's interior (especially the vert) the OEM system does a decent job juggling the compromises.

The one saving grace is that the head unit's output is flat with all the unique Bose EQ/tweaks being performed in the amps. This makes the amp/speaker upgrade a little easier.

Adding acoustic treatment (Dynamat for example) helps immensely, as does stiffening the doors/panels.


Looks like those Begonias are thriving in an old Bose 901 shell....cool idea!

Originally Posted by billyboy47
is that your only expression?

You could have said, I tried Polk speakers once and didn't like them.
Or, I had Polk xxx.x speakers, and they performed poorly, so I don't use Polk anymore.

Instead you make this broad statement, "Polk is pure garbage".

I reacted as I did, because Polk makes some very good speakers, and enjoys a fine reputation in the speaker industry.

I've been building home audio systems since the late 60s, and home theater systems since the mid 90s.

I've used Altec Lansing, University, Bose, JBL, Boston Acoustics, Martin Logan, Infinity, and others.
However, I've achieved some of my favorite sounds with Polk systems.

In fact my current home theater system, is all Polk, except for the Sub-Woofer which is Klipsch.

You used a very broad brush there Billy. Everyone's perception of what constitutes good sound is different.
That's why there's so many different speakers to choose from.



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