replacement speakers???
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Joined: Jun 2004
Posts: 96
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From: Novelty OH
Originally Posted by pgtr
Matt you sound like you know your stuff... I don't mean to hijack this thread but I have a couple few questions you might be able to help with and may be relevant to this thread...
I'm contemplating building a custom pair of speakers for a mid C3 w/ the dual DS-501 transistor stereo amp. The 662 factory 'upgrade' speakers are about as good as it gets for drop-in replacements, they are the correct 10 ohm speakers and all of that. But while way better than the originals - still not an ultimate hi fi speaker even for a vintage 68-76 amp. (FYI the later amps especially 74-76 are I think a lot better than earlier amps).
As you probably know these mount under the dash facing up and focusing on the windshield glass. THeir baskets are open and explosed to the dash and ultimatley footwells below...
As you know nice separate drivers exist including 8 ohms. Again for an original amp I was thinking of putting together a 4X6 plate w/ cutouts for say a 4" driver and a 1" tweeter and a crossover. THoughts...? Any idea how much better this might be over the ACDelco 4X6 10 ohm given an amp that puts out a couple few watts on a good day?
The other question applies equally to ACDelco 4X6s or a 'custom' speaker and that is enclosures for the face up dash speakers open to the bottom... I was toying w/ the idea of a 4X6 foam baffle and some polyfill in there. No it's not a serious rigid enclosure but perhaps it would be better than an 'open' speaker...? Or is it worth the trouble?
Crutchfield offers XTC Foam baffles in 4X6 w/ either a 3.5" depth or shallow 2.5" depth. The guages on the passenger side probably force the 2.5" depth.
And given a baffle like this - worth cutting a small hole in bottom or not?
I know there are other options like kick panels or rears but right now for this particular project only the original dash mount 4X6 location is an option. And the speaker needs to be at least 8 ohms. Those are THE constraints for this project.
thanks!
I'm contemplating building a custom pair of speakers for a mid C3 w/ the dual DS-501 transistor stereo amp. The 662 factory 'upgrade' speakers are about as good as it gets for drop-in replacements, they are the correct 10 ohm speakers and all of that. But while way better than the originals - still not an ultimate hi fi speaker even for a vintage 68-76 amp. (FYI the later amps especially 74-76 are I think a lot better than earlier amps).
As you probably know these mount under the dash facing up and focusing on the windshield glass. THeir baskets are open and explosed to the dash and ultimatley footwells below...
As you know nice separate drivers exist including 8 ohms. Again for an original amp I was thinking of putting together a 4X6 plate w/ cutouts for say a 4" driver and a 1" tweeter and a crossover. THoughts...? Any idea how much better this might be over the ACDelco 4X6 10 ohm given an amp that puts out a couple few watts on a good day?
The other question applies equally to ACDelco 4X6s or a 'custom' speaker and that is enclosures for the face up dash speakers open to the bottom... I was toying w/ the idea of a 4X6 foam baffle and some polyfill in there. No it's not a serious rigid enclosure but perhaps it would be better than an 'open' speaker...? Or is it worth the trouble?
Crutchfield offers XTC Foam baffles in 4X6 w/ either a 3.5" depth or shallow 2.5" depth. The guages on the passenger side probably force the 2.5" depth.
And given a baffle like this - worth cutting a small hole in bottom or not?
I know there are other options like kick panels or rears but right now for this particular project only the original dash mount 4X6 location is an option. And the speaker needs to be at least 8 ohms. Those are THE constraints for this project.
thanks!
Were you thinking something like this? Again, stuck at 4 ohms.
http://www.crutchfield.com/S-iDBQqYp...0&I=1086402CFP
That said...my vette stereo is bone stock. The engine noise makes me want to hear the radio a lot less! =)
I'll keep looking for something 8 ohms... what a pain!
-Matt
FYI the resistor trick doesn't work
Been there... screwed that up.
Pro
Joined: Jan 2004
Posts: 649
Likes: 56
From: TX
Originally Posted by neoh77
The XTC foam baffles are really meant to keep the dirt and moisture away from the driver. I don't think you'd see a difference sound quality wise. Car speakers are designed with free air operation in mind like a door or dashboard.
Originally Posted by neoh77
You're hard part will be finding something that is 8 ohms on the market. The 4" coaxial speakers seem to sound a little better than any 4x6" speaker I've heard. MB Quart makes some decent 4x6" drivers in the Discus series except they are also 4 ohms....
Originally Posted by neoh77
Any speaker of that size won't yield great bass...
Originally Posted by neoh77
Were you thinking something like this? Again, stuck at 4 ohms.
http://www.crutchfield.com/S-iDBQqYp...0&I=1086402CFP
http://www.crutchfield.com/S-iDBQqYp...0&I=1086402CFP
Originally Posted by neoh77
I'll keep looking for something 8 ohms... what a pain!
-Matt
-Matt
Originally Posted by neoh77
FYI the resistor trick doesn't work Been there... screwed that up.
Been there... screwed that up.
Safety Car
Joined: Jul 2002
Posts: 4,269
Likes: 3
From: St. Charles IL
Cruise-In 5-6-7-8-9-11-12 Veteran
A CI-6 Car Show Winner
Please allow me to clarify the Delco part number 13033662 speakers (4 X 6) I recommended near the top of this thread are intended for in dash, not kick panel. If GM does not have the 4 X 10 kick panel speakers, I would recommend trying to fit the 4 X 6 speakers in the kick panels with an adapter. There's a good chance if those 4 X 10 speakers were a 2 year only, GM may not have them. Crutchfield lists nothing even close, not even modern 4 ohm speakers in that size. If you would like to try a 4 X 6 speaker for fit, I would be happy to send you one of my originals, but it is no good. Use for test fitting only. PM me your address if you want it.
Thread Starter
Racer
Joined: Jan 2005
Posts: 365
Likes: 1
From: Glenview IL
I'm gonna review the wiring diagram again. But here is my thought. I plan on wiring the 2 speakers in series, which should result in an approx 10 ohm load. This is a mono radio so this should work. Any ideas on this from you audiophiles???
~Rich
~Rich
Thread Starter
Racer
Joined: Jan 2005
Posts: 365
Likes: 1
From: Glenview IL
Well, after speaking to several audio guys that have been doing Delco radio repair for a while, I have been told that using a 4 ohm speaker will be OK. One guy told me that a Delco can handle 4, 8 and 10 ohm without any negative results, as long as I don't go below 4.
I guess I'll give it a shot and see what happens.
Thanks all for your replies. Much appreciated, being my first post and all.
~Rich
I guess I'll give it a shot and see what happens.
Thanks all for your replies. Much appreciated, being my first post and all.
~Rich
Pro
Joined: Jan 2004
Posts: 649
Likes: 56
From: TX
Originally Posted by 68sbShark
Well, after speaking to several audio guys that have been doing Delco radio repair for a while, I have been told that using a 4 ohm speaker will be OK. One guy told me that a Delco can handle 4, 8 and 10 ohm without any negative results, as long as I don't go below 4.
I guess I'll give it a shot and see what happens.
Thanks all for your replies. Much appreciated, being my first post and all.
~Rich
I guess I'll give it a shot and see what happens.
Thanks all for your replies. Much appreciated, being my first post and all.
~Rich
What they are saying is true of the newer Delco radios of the mid 70s and beyond (which continued to use 10 ohms) but I will strongly disagree as far as the vintage Delco radios in pre 77 Corvettes that used the old DS-501s.
That being said based on the posts above I do kinda wonder if the Zip speakers being 4X10s are by definition GM and 10 ohms despite their lack of stampings.
Good luck!
Safety Car
Joined: Jul 2002
Posts: 4,269
Likes: 3
From: St. Charles IL
Cruise-In 5-6-7-8-9-11-12 Veteran
A CI-6 Car Show Winner
Here's a good guy to talk to. His specialty is Corvette Radios, 1968-1976. Other radios built from 1950-1976. Gordon Ward of Huntsville, Alabama. Phone 256-892-0955 or e-mail glw@mchsi.com
Surely you will need someone with his talents sooner or later. He did a great job fixing my radio.
Surely you will need someone with his talents sooner or later. He did a great job fixing my radio.
Thread Starter
Racer
Joined: Jan 2005
Posts: 365
Likes: 1
From: Glenview IL
Originally Posted by Big Fish
Here's a good guy to talk to. His specialty is Corvette Radios, 1968-1976. Other radios built from 1950-1976. Gordon Ward of Huntsville, Alabama. Phone 256-892-0955 or e-mail glw@mchsi.com
Surely you will need someone with his talents sooner or later. He did a great job fixing my radio.
Surely you will need someone with his talents sooner or later. He did a great job fixing my radio.
~Rich
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