I just bought Polk Momo 6x9's for my '68. The original speakers mounted from the bottom. All the new speakers are designed to sit in the hole and mount from the top. I don't want to cut the hole in the shelf to mount them this way (as it is the hole is too small to mount this way). I'm thinking about making a spacer so I can mount them below the shelf without the speaker hitting the shelf. Any audiophiles out there to give me advise? After spending pretty high dollar on the speakers I don't want them to sound lousy due to how I mount them. Also I will have to build some grills to go on top of the package tray, as the ones that come with the Polk's won't work the way I want to mount them. Any advise on the grills?

I cut a hole in the package tray and the grill and it turned out looking really nice. The silver polk momo grills look great in the back tray. It doesn't look out of place and my stereo system sounds awesome. Cutting it isn't a big deal since if you ever want to go back to original you could just buy a new package tray and cover it nicely.

Btw this all only took me an afternoon as its not real difficult. Also, the polks sound sweet!

David

Forgot to mention that I mounted the speakers above the package tray shelf (the upholstered part) and screwed it down there. I have no vibrations and they bump nicely :thumbsup:

I pinched the speaker out of my wifes late 90s Toytota corolla...they have a nice round form to them...replaced the speakers inside , painted the boxes with acrylic lacquar, matching the interior....
Cutting the tray?..this is a structual part of the body frame...not a good idea

I think he's talking about the cardboard package tray, not the rear shelf itself.

I pop riveted steel tee nuts onto the shelf, then installed the package tray with oval holes in the correct locations. Then I attached OEM type grills (the rectangular ones) with screws into the tee nuts. The screws extended about 1" into the trunk to form "studs". Then from the trunk, I installed the speakers over the studs and secured them with nylock nuts.

Only problem was the modern speaker magnets stuck further down into the trunk, and interfered with the proper location of the spare. Fortunately, I had one of those offset spare tire hooks, which allowed me to move the spare aft a couple of inches...enough to clear the speaker.

I didn't want to mess with mine either, the package tray appears to be original. I got a set of those pre-made 6x9 boxes and mounted them in there, I can pull them out at any time with the quick disconnects. No harm, no foul. Do they block my vision? Not much, I don't ever watch what's behind me anyway, I figure if they can't catch me, the he$$ with em'..........:D

Just to clarify.... I don't mind cutting the fiber package tray, it's the metal shelf I don't want to cut, and it's that metal hole that is too small for the new 6X9's to fit in from the top.

Bearcat44 Did your's fit through the original metal hole?

Do they block my vision? Not much, I don't ever watch what's behind me anyway, I figure if they can't catch me, the he$$ with em'..........:D

Watch your rearview when at a stop lilght for a WWII vet driving a GMC Yukon and a car in front of you.

I cut mine to install the 6x9's. It's really not that big of a deal. My car hasn't fallen apart due to a reduction in structural rigidity.


Dave, there is no way you are going to get those 6x9's to drop into a hole that isn't there. Stick them in boxes and mount them on the rear shelf if you don't want to make cuts and install them in the rear shelf.

Watch your rearview when at a stop lilght for a WWII vet driving a GMC Yukon and a car in front of you.


Holy cow! The EXACT same thing happened to me!! all black Yukon, WWII vet... wow... what are the odds?

I bought a set of Cerwin Vega 6x9's with a recessed center cone. I used pan head screws through the mounting holes from the top and held them in place with those thin metal speed nuts. Slide the 6x9 over the 4 exposed screw threads and add a washer and nut. Snug them up and it all looks stock from inside the car. I didn't want speaker grills or a big bump looking thing in my package tray.

Might be too much work but you can buy a aftermarket package tray from Ricks that has small holes in it for the speakers. You mount them underneath and the sound comes out the small holes. You can't even tell that it is different or that there is speakers under it. Give it a thought!!!

He is NOT talking about the cardboard package tray. He is talking about the METAL rear shelf and not wanting to cut the brace that goes across the 6x9 cutout already in the rear shelf.

Dave, even if you were to make a spacer out of lets say 3/4" plywood, your tweeters in those 6x9's are still going to reflect off that metal piece that goes across the opening. I think your sound would suffer

Thanks for the replies. I plan to mount them to the bottom. I'll have to use spacers since the cones are not recessed. I'll then install a package tray with the speaker grills built in. I'll probably also try to build a box around them on the underneath to help the sound.

You woon't need a box for the backside of speakers, in fact it may hurt the bass.

Upset the structural integrity of the car huh Steptoe? That metal is down right flimsy. If anything is going to make my car collapse in on itself its the rusted rockers, not a hole that ALREADY pre-existed and was merely widened two inches. :thumbsup:

David

Sorry!!! Misunderstood the dilema. Thought it was the package tray. Don't fire me, just trying to help!!!

Hey guys, here is my install. I have the factory rear speaker for the AM/FM on the passenger side (blue wire hanging down), so all I needed was a cut-out on the driver's side. I installed a set of Infinity 6X9's using the spacer ring provided and enclosed the speakers inside foam baffles. I am using a Secret Audio SS radio and CD player that I mounted up under the rear package tray. The speakers are installed from the bottom and I used the stock metal grilles to cover up the Infinity's. This turned out to be a very discreet system and looks stock from inside the car because of the metal grilles. The fact the system is tight up under the rear tray makes it almost invisible when looking in the trunk unless you really stick your head in there. The trunk mat hides the wiring and what was exposed got covered with black wire looms. The stock AM/FM is still in the dash and connected to the front dash speaker, I had to forfeit the stock rear speaker but it is a trade-off to get the good tunes from the CD player.

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3rail,

I like what you've done. My Polks did not come with the spacer. My son has some infinity kappa's. I'll have to ask him if he has the spacers that came with them, maybe they'll fit the polks. Are the foam baffles something that can be picked up at an audio shop?

Thanks 68DaveV. Yep, I have seen them at Best Buys and Circuit City. I personally bought my through Crutchfield that I piggybacked on an order with my son. I did a fair amount of reserach into the speaker mounting. I went with the Infinity's specifically for the spacer, although the sound is pretty decent too. You could most likey make you own spacer out of 1/2" MDF which should work pretty good.