Adding Tweeters to C5 Doors... Need Pics
Thread Starter
Burning Brakes
Joined: May 2000
Posts: 1,008
Likes: 51
St. Jude Donor '12
Adding Tweeters to C5 Doors... Need Pics
Hi all,
In a quest to improve the sound of the stock system in my C5, I'm going to add a set of tweeters in parallel with the stock twiddlers. But I want to place mine underneath the factory grills instead of the A pillars. Does anybody have a picture of what the stock Bose speakers look like in the door so that I can judge whether or not my idea will work before I tear into the door?
Thanks,
Darren
In a quest to improve the sound of the stock system in my C5, I'm going to add a set of tweeters in parallel with the stock twiddlers. But I want to place mine underneath the factory grills instead of the A pillars. Does anybody have a picture of what the stock Bose speakers look like in the door so that I can judge whether or not my idea will work before I tear into the door?
Thanks,
Darren
Melting Slicks
Joined: Mar 1999
Posts: 3,326
Likes: 0
From: Taylor TX
NCM Sinkhole Donor
Re: Adding Tweeters to C5 Doors... Need Pics (98Pace)
I don't have a pic, but I've seen the insides many times. There is plenty of room to surface mount a tweeter with space to clear the grille when the panel is reinstalled. Be sure you get one that can be mounted at an angle so you can aim it up towards the ear.
Thread Starter
Burning Brakes
Joined: May 2000
Posts: 1,008
Likes: 51
St. Jude Donor '12
Re: Adding Tweeters to C5 Doors... Need Pics (lotzahp)
I kinda figured there would be room, but I wanted to make sure.
I will probably go with a set of the Boston Pro Series. I've got a set in my Supra and they sound phenominal (course, there's also a lot more power going to them in the Supra than there will be in the Vette, but that's ok!).
Thanks for the advice,
98Pace
I will probably go with a set of the Boston Pro Series. I've got a set in my Supra and they sound phenominal (course, there's also a lot more power going to them in the Supra than there will be in the Vette, but that's ok!).
Thanks for the advice,
98Pace
Melting Slicks
Joined: Sep 2000
Posts: 2,756
Likes: 5
From: Satellite Beach, FL, USA
Re: Adding Tweeters to C5 Doors... Need Pics (98Pace)
For lowest distortion, you want to put the tweeters in parallel with the rear
Twiddlers. The wires are available on the back of the HU.
For best sound, the tweeters should point at the occupants heads. You can try the experiment of placing surface mount tweeters on the dash pointing at the windshield. Adjust the aim to get best reflected sound off the glass.
Twiddlers. The wires are available on the back of the HU.
For best sound, the tweeters should point at the occupants heads. You can try the experiment of placing surface mount tweeters on the dash pointing at the windshield. Adjust the aim to get best reflected sound off the glass.
Melting Slicks
Joined: Mar 2001
Posts: 3,260
Likes: 64
From: League City TX
Re: Adding Tweeters to C5 Doors... Need Pics (99HT)
99HT
Why go in parallel with the Rears? What is the difference in the front outputs?
How about adding a small resistor in order to bring the load back to around 4 ohms?
You might consider finding the Rally Series Tweeters-more efficient to compensate for the head unit power levels.
[Modified by Closer_2001, 6:09 PM 11/19/2001]
Why go in parallel with the Rears? What is the difference in the front outputs?
How about adding a small resistor in order to bring the load back to around 4 ohms?
You might consider finding the Rally Series Tweeters-more efficient to compensate for the head unit power levels.
[Modified by Closer_2001, 6:09 PM 11/19/2001]
Thread Starter
Burning Brakes
Joined: May 2000
Posts: 1,008
Likes: 51
St. Jude Donor '12
Re: Adding Tweeters to C5 Doors... Need Pics (Closer_2001)
99HT,
Don't you think that putting the tweeters as low and forward in the doors as possible would help to equalize the distance between the tweeters more than a dash mount would? I really don't want to pull the soundstage (as it is) any further to the left than necessary. I was even thinking about going in the kick panels, but I think the torque tube hump in the middle would make it hard to aim them. Any thoughts?
Don't you think that putting the tweeters as low and forward in the doors as possible would help to equalize the distance between the tweeters more than a dash mount would? I really don't want to pull the soundstage (as it is) any further to the left than necessary. I was even thinking about going in the kick panels, but I think the torque tube hump in the middle would make it hard to aim them. Any thoughts?
Melting Slicks
Joined: Sep 2000
Posts: 2,756
Likes: 5
From: Satellite Beach, FL, USA
Re: Adding Tweeters to C5 Doors... Need Pics (98Pace)
When you add a "4" ohm tweeter and it's crossover in parallel with the front 3.5" Bose Twiddlers, the impedance that the amplifier will see will be very low where the two speakers overlap in frequency response. The front 3.5" Bose Twiddler will have a frequency response similar to any add on tweeter. In reality it would be best to put the add on tweeter in parallel with the rear 5.25"/6.5" Bose Twiddler wires. The rear Twiddler is a mid range speaker. Putting a tweeter and crosover in parallel with it will mean little overlap in the frequency response of the two speakers. The amplifier will not have to supply as much current at a specific frequency to both speakers at once, so it will run cooler and produce less distortion.
Tweeters are very directional. If you mount them low on the door, your ankles and knees will be the only parts of your body getting the full frequency response of the tweeters, not your ears. I would not be worried about trying to equalize distance of all drivers, the human ear cannot resolve phase differences for high frequencies.
Tweeters are very directional. If you mount them low on the door, your ankles and knees will be the only parts of your body getting the full frequency response of the tweeters, not your ears. I would not be worried about trying to equalize distance of all drivers, the human ear cannot resolve phase differences for high frequencies.
Melting Slicks
Joined: Sep 2000
Posts: 2,756
Likes: 5
From: Satellite Beach, FL, USA
Re: Adding Tweeters to C5 Doors... Need Pics (Closer_2001)
P.S.
If needed, you can always add a resistor in series with a speaker and crossover to lower it's output level. You will have to select a value to suit your tastes.
To me, I think the gain of the Bose HU Twiddler power amp is too low. It seems that on some old CD's and talk radio FM stations, the amp cannot be driven to full output level. I modified mine to improve this problem.
If needed, you can always add a resistor in series with a speaker and crossover to lower it's output level. You will have to select a value to suit your tastes.
To me, I think the gain of the Bose HU Twiddler power amp is too low. It seems that on some old CD's and talk radio FM stations, the amp cannot be driven to full output level. I modified mine to improve this problem.
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Thread Starter
Burning Brakes
Joined: May 2000
Posts: 1,008
Likes: 51
St. Jude Donor '12
Re: Adding Tweeters to C5 Doors... Need Pics (robiferretti)
Robiferretti:
des@dbmicro.com
Send as many as you want. I've got a high speed line and no limit on e-mail size.
Thanks!
Darren
des@dbmicro.com
Send as many as you want. I've got a high speed line and no limit on e-mail size.
Thanks!
Darren
Thread Starter
Burning Brakes
Joined: May 2000
Posts: 1,008
Likes: 51
St. Jude Donor '12
Re: Adding Tweeters to C5 Doors... Need Pics (99HT)
99HT:
Thanks for the advice. I still think I want to look at putting the tweets in the doors and aim them up and towards the middle of the car. I've had great success with kick panel mounted speakers before and I would really prefer to maintain a completely stock look. I'll just have to take a look at what I have to work with and see.
Have you found any other convenient mounting locations that will work with no mods to the car? It looks like dash mounting them would work fairly easily, but I think that putting them on the A pillar would require more than just double stick tape!
BTW, just out of curiosity, what is your background in mobile audio? You know a whole lot to just be an enthusiast! I used to be an installer in the early 90's, but I got out of it to make more $$$ with computers. I've been away for a while, but I'm getting back into it now. Too much fun to be had to not still dabble!!
Darren
Thanks for the advice. I still think I want to look at putting the tweets in the doors and aim them up and towards the middle of the car. I've had great success with kick panel mounted speakers before and I would really prefer to maintain a completely stock look. I'll just have to take a look at what I have to work with and see.
Have you found any other convenient mounting locations that will work with no mods to the car? It looks like dash mounting them would work fairly easily, but I think that putting them on the A pillar would require more than just double stick tape!
BTW, just out of curiosity, what is your background in mobile audio? You know a whole lot to just be an enthusiast! I used to be an installer in the early 90's, but I got out of it to make more $$$ with computers. I've been away for a while, but I'm getting back into it now. Too much fun to be had to not still dabble!!
Darren
Pro
Joined: Aug 2000
Posts: 531
Likes: 0
From: Alpharetta, Georgia, USA
Re: Adding Tweeters to C5 Doors... Need Pics (99HT)
I have a set of Infinity Reference Series 1" tweeters mounted on the lower part of the A Pillar covers and aimed right at my head. Ran them off the rear wires at the same time I replaced the rears with Infinity 6.5" Coaxials with aimable tweeters. They come with a built in crosover. You can rely on 99HT for the best info here. Followed his instructions for my Subwoofer install and his advice regarding the HU and the tweeters and everything works and sounds great. Replacing A pillar covers is not expensive.
The Infinity tweeters can be mounted 1. Surface, 2. recessed adjustable, or
3. surface angled. It is nice to have the mounting options with the tweets.
Dave
The Infinity tweeters can be mounted 1. Surface, 2. recessed adjustable, or
3. surface angled. It is nice to have the mounting options with the tweets.
Dave
