6x9 speakers in rear deck - Ford Mustang Forum
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post #1 of 19 (permalink) Old 03-21-2019 Thread Starter
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6x9 speakers in rear deck

I’m installing 6x9s in my ‘65. The rear deck metal has cuts outs for one center 6x9 and some other sizes on the sides of that. I want to install two speakers. I’m sure someone has done this before. Any tips?

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post #2 of 19 (permalink) Old 03-21-2019
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Only the center hole was intended for a speaker. The ones on the side are just cutouts to reduce the amount of metal used. Stereo for a car radio was so new in 1965 that hardly anyone even thought about it. Many cars, like our '66 GT convertible were ordred without a radio at all. Multiple speakers in a car were usually done by an owner, not the car factory especially for mass market cars like a Ford. Where I lived there weren't any FM stations then which were the first ones with stereo.

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post #3 of 19 (permalink) Old 03-21-2019
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That's why every body was rocking pioneer surface mounts back in the day.

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post #4 of 19 (permalink) Old 03-21-2019
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It looks like you won't have any issues putting in 2 speakers. Just a matter of drilling new mounting holes and cutting corresponding holes in the tray cover.
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post #5 of 19 (permalink) Old 03-21-2019
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Most individual car speakers ( 65 vintage) were 8 ohms, I had trouble finding an 8 ohm 6x9 speaker for an old tube radio that I am repairing. I bought a 4 ohm and replaced the output transformer to 4 ohms to match impedance .

You can use 2 6x9 4 ohm speakers and add up to 8 ohms, check internet for wiring diagram. Best performance when the impedance of radio is matched to speaker.
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post #6 of 19 (permalink) Old 03-21-2019
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You will want to do the installation without damaging the original design. Good options are undermounting the speakers or surface mounting them.
There are also 6x9 speakers that contain 2 separate speakers in the housing similar to the ones for the dash.
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post #7 of 19 (permalink) Old 03-22-2019
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I made the mistake of clearancing my package tray structure when I didn't need to. Mounting the 6x9s right on top of the package tray board will work just fine. May have to drill some screw holes, but it'll be fine.

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post #8 of 19 (permalink) Old 03-27-2019
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If you don’t want to cut your sheet metal, I’ve tried this https://www.cjponyparts.com/scott-dr...5-1967/p/PT25/ in my 66 coupe but... it doesn’t fit very well without some working it. It’s also about $15 worth of plastic and looks about as cheap so you will be disappointed if you pay full price. You could cover it in some vinyl to make it look decent and you will have to get some low profile speakers AND be sure to mount them in the tray before installing otherwise you will not clear the glass. More effort and money than it’s worth IMO but good idea that has potential.
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post #9 of 19 (permalink) Old 03-29-2019
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I did the 2 speakers mounted in 1 6X9, as to give it a stock looking appearance in the rear tray. It sounds ok, not great, not horrible, tho it could be the stereo I put in it too. I used a "lookalike" radio that turned out to be a very big disappointment, I should have known when the first one I purchased didn't even work! I'm going to pursue another avenue with the radio eventually. So, back to the speaker installation, I had to clearance the hole in the metal under the rear package tray slightly to get the speaker to sit in the hole correctly. and I'm pleased with the results of using the stock looking speaker grille and package tray from NPD. I did the 2 into 1 speaker in the front too, and that installed without issue.
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In my '66 coupe I put 6 1/4 round JBL's sounds good I had to cut my OEM package tray

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Quote:
Originally Posted by CA65FB View Post
If you dont want to cut your sheet metal, Ive tried this https://www.cjponyparts.com/scott-dr...5-1967/p/PT25/ in my 66 coupe but... it doesnt fit very well without some working it. Its also about $15 worth of plastic and looks about as cheap so you will be disappointed if you pay full price. You could cover it in some vinyl to make it look decent and you will have to get some low profile speakers AND be sure to mount them in the tray before installing otherwise you will not clear the glass. More effort and money than its worth IMO but good idea that has potential.
I got me a pair of Focal 690AC 2-way 6x9" speakers like these https://soundrating.com/best-6x9-speakers/#focal and i've been thinking about ways to install them without drilling holes in my car...

Thank you!
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Newbie here, but plenty of audio background (former Dolby engineer, sound company owner, etc).

Someone hacked up the package shelf on my '66 coupe to shove some 6x9s in but they didn't really fit. The hole is closer to a 5x7.
What I did was make a piece of plywood that fit under the package shelf inside the trunk. Screwing speakers to wood is always better than to sheet metal. Lined up the holes with the openings to either side of the factory 6x9 opening. Bolted the plywood through the rear deck sheet metal. I cleaned up the holes in the cardboard package shelf and covered the entire piece with black cloth. Found some nubby textured flat black cloth at the yardage store. If you want to know if it's suitable for grillecloth, blow though it. If you can feel the air on your hand going though the cloth, it will work fine.
Other than the shelf being covered with somewhat stretchy cloth instead of carpet, it's totally stealth. I put some proper speaker grillecloth over the opening at the plywood level just to protect the speaker from anything puncturing the cosmetic cloth on top, and add a bit more UV protection for the cones. It's not a daily but the sun beats up read deck speakers.
If I ever want to get silly, I can put an 8" sub under the 6x9 opening. For right now, the Polk 5x7s are adequate for listening to music in a noisy car. Together with the Classic Stereo twin 3" speakers in the dash, I still have to figure a way to stealth a couple tweeters at the A pillars to add some stereo image width.
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Quote:
Originally Posted by Blues66 View Post
Newbie here, but plenty of audio background (former Dolby engineer, sound company owner, etc).

Someone hacked up the package shelf on my '66 coupe to shove some 6x9s in but they didn't really fit. The hole is closer to a 5x7.
What I did was make a piece of plywood that fit under the package shelf inside the trunk. Screwing speakers to wood is always better than to sheet metal. Lined up the holes with the openings to either side of the factory 6x9 opening. Bolted the plywood through the rear deck sheet metal. I cleaned up the holes in the cardboard package shelf and covered the entire piece with black cloth. Found some nubby textured flat black cloth at the yardage store. If you want to know if it's suitable for grillecloth, blow though it. If you can feel the air on your hand going though the cloth, it will work fine.
Other than the shelf being covered with somewhat stretchy cloth instead of carpet, it's totally stealth. I put some proper speaker grillecloth over the opening at the plywood level just to protect the speaker from anything puncturing the cosmetic cloth on top, and add a bit more UV protection for the cones. It's not a daily but the sun beats up read deck speakers.
If I ever want to get silly, I can put an 8" sub under the 6x9 opening. For right now, the Polk 5x7s are adequate for listening to music in a noisy car. Together with the Classic Stereo twin 3" speakers in the dash, I still have to figure a way to stealth a couple tweeters at the A pillars to add some stereo image width.
I'd love to see the finished product.
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I did about the same ad Blues hanging my 6x9's underneath but without the wood. My '67 coupe's rear deck might be stamped differently though. My cover matches black nylon carpet but looks gray in photos for some reason. See my speakers? Oh and there's a 10 inch sub and a couple of amps in there somewhere too.
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Quote:
Originally Posted by Jkasper76 View Post
Im installing 6x9s in my 65. The rear deck metal has cuts outs for one center 6x9 and some other sizes on the sides of that. I want to install two speakers. Im sure someone has done this before. Any tips?
They make generic type foam insulation "cups" that fit under the speakers that create an enclosure...very inexpensive and work excellent.....they are very thin and drop in from the top side with the speaker flange set on top.....and does not interfer with flush mount appearance.


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