I have an '85 300TD and want to replace the rear speakers (stock ones in the headliner near the rear gate).

Does anyone know what size they are? 4 inch or 6 1/2 inch?

Thanks,

Tom

Well,I do not know if this will be of very much help to you, but my 82 300D uses 5 1/4 inch speakers in the back. I don't know if it's the same on the wagon though.
-Joe

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

You can also always cut out the whole to fit whatever you want.

Scott

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Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)

The problem with the TD is the small space allowed in the roof area will not let a speaker any larger to fit. I looked at cutting but figured it would not help, even a larger speaker there will not add significantly to the quality of the sound that comes off downwards firing speakers in a space that doesn't allow any bass respose.
I solved that problem by adding satellite speakers driven off a small (A/D/S) amplifier, the "plate amp" variety that fits under the floorboard area (if your car has the third seat this obviously won't work) - I use a Pioneer receiver with a 12-cd player mounted in the back on one wall near the spare tire.
I used two small monitor speakers, there are lots of them available for home theater use, and the sound is completely awesome with the 25 W/chan amp, it will even thump if you want to make it a pimper.
I left the tinny MB speakers in place, as I have to remove the monitors if I need the cargo space. The monitors have to be tied down BTW otherwise they will wind up flying across car when you turn and brake, BTDT.

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!

Thanks for the replies. I'm in NYC want to keep the speakers in the stock location. Can was broken into last month and the stereo was stolen.

Is the size 5 1/4? Just want to confirm. Thx,

Tom

I replaced mine some time ago and don't remember the size, sorry. I do recall that the depth is an issue too so I'd recommend you remove the old speaker to measure to be sure you have enough room. IIRC I couldn't get as good an upgrade as I wanted because I could only find one speaker that would fit. That was a few years ago so you may have more choices now. Dieseldiehard is right though, the upgrade to the rears made very little difference, the bulk of the benefit came from the fronts where there was more room to play around with the sizes. Wagons in general aren't the best accoustic platforms so don't waste too much $$ on this unless you're really into it. (In which case you may want a sedan)

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold

Depth is indeed an issue. I think I found only one pair of speakers on all of crutchfield's or cartoys' web sites that would fit my car.

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Aaron
'84 300D 267,000 - Running WVO - Rice Bran Oil - Mmmmmm, fishy...
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I was taking the last parts that I could off of the parts car and I looked at the rear speakers. Definately not 5 1/4". More like 4". I would try Crutchfield for the size. I would have taken the two from the parts car but the suspension was torn.

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Paul

1991 300TE (280,000)
1985 300TD (432,000 miles - retired)
1976 300D (225,000 - retired)
1975 300D (165,000 - retired)

Well with a wagon you have room for 4 15" subs is a big box...and get heart stopping bass.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Here's an idea:

Take a tape measure and measure them.

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Aaron
'84 300D 267,000 - Running WVO - Rice Bran Oil - Mmmmmm, fishy...
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