I just finished the installation in my 83 300cd and will begin to document it here...Basically it includes an Alpine Head unit with XM built in and a CD. In order to be able to control all the speakers in the car I am using a Nakamichi EC200H crossover for the front and a Nak EC200 and EC200H for the rear which are mounted in the glovebox. These are "old school" units from the 80's but have 24 db slopes I believe and are very clean..The speakers in the car are two pair of Boston Acoustic 5.5 Pro. They are very clean and handle all the power I give them. Mounted in the trunk are 4 ADS PH15 "also old school" amplifiers which are all bridged for 12 X 110 watts RMS and drive every speaker in the vehicle with its own amplifier. I am using 2 12" JL Audio dual voice coil subs for the custom sub box in the trunk. Considering that the install took around 100 hours (with Dynamat) I am glad to be done...I spent a week of my vacation finishing it and other features include all custom made preamp cables (8 hours) and resoldering of both cruise control and heater controller and now both work. I will provide some pictures as soon as I figure out how to put them on this forum.

Attached Thumbnails

       

__________________
83 300CDTurbo 307,000
2005 Honda Element 266,000
56 Nash Ambassador Country Club Special 34,000(under restoration presently)

http://www.peachparts.com/shopforum/car-audio-multimedia/125099-123-install-extreme-dynamat.html

More Pictures

Attached Thumbnails

       

__________________
83 300CDTurbo 307,000
2005 Honda Element 266,000
56 Nash Ambassador Country Club Special 34,000(under restoration presently)

http://www.peachparts.com/shopforum/showthread.php?t=125099

More Pictures

Attached Thumbnails

       

__________________
83 300CDTurbo 307,000
2005 Honda Element 266,000
56 Nash Ambassador Country Club Special 34,000(under restoration presently)

http://www.peachparts.com/shopforum/showthread.php?t=125099

Amps and XOver

Attached Thumbnails

     

__________________
83 300CDTurbo 307,000
2005 Honda Element 266,000
56 Nash Ambassador Country Club Special 34,000(under restoration presently)

http://www.peachparts.com/shopforum/showthread.php?t=125099

man you spend some bucks on Dynamat...how many square feet did you end up using?

__________________
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)
---------------------
Section 609 MVAC Certified
---------------------
"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

Ramblin, thanks for the anecdote and pics. That looks way cool. Is that dynamat for acoustics or a sound deadener of external car/road noise?

Hey, I am interested to know HOW to resolder the cruise control computer of the w123.
Can you statry a new thread with that info? The general info has been threaded before but what I still am not sure of is HOW to resolder the points.
Do ya just touch a hot tip onto the soldered point until it gets moist or what?

Do you use a reguler weller solder iron?

THANKS

__________________
1979 300D 220 K miles
1995 C280 109 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles SOLD
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD

I would love to hear how the Dynamat works out for you. Ive been itchin' to Dynamat my doors, floor, under and behind the rear seat, and in the trunk of my 300DT.

Cool pics!

__________________
Nate

1995 E420
1992 BMW 525i
1984 300D Turbo sold
1993 Volvo 244 sold
1995 Volvo 944T R.I.P!


"The details are not details. They make the product."
-Charles Eames

www.cbs.nu

I've done my trunk floor and under the rear seats on my E300, but to do as much as you did in your w123, DAMN!

Awesome Job BTW!

__________________
#dieselFLEET
---------------
'97 E300
'99 E300

I've done that with my diesel truck.....before you had to litteraly scream at each other to be heard in it....now you bearely hear the engine...

__________________
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)
---------------------
Section 609 MVAC Certified
---------------------
"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

How many square feet did you end up using? I wanna do the same to my 123.

__________________
2001 ML320 - 74k miles

I used two bulk paks of Extreme Dynamat and a door kit which I didn't even show because I put the door panels on before I took pictures. You can get bulk paks for about $150 ea and look for a place that gives free shipment for over a certain amount..The stuff is heavy and I wouldn't want to pay for shipment. The car is very quiet now considering the car has 280,000 miles on it but I also installed all new shocks and tires. My brother remarked after driving it that the car seemed tight and he has a similar car (SD). Of course the major reason I did the dynamat was to increase the level of bass in the car...I drilled out the bottom of first aid kit and lined it with dynamat to keep vibrations down and the bass into the passenger cabin is quite substantial considering how much metal is between the trunk and the passenger cabin. Sure does deaden those bumps also...Will start a thread on resoldering of the cruise and heater controller in the future...By the way the Dynamat usage was 84 sq ft. I found one of the cheapest places for Dynamat is as follows. http://www.onlinecarstereo.com/CarAudio/ProductList.aspx?CategoryID=27&ManufacturerID=648

__________________
83 300CDTurbo 307,000
2005 Honda Element 266,000
56 Nash Ambassador Country Club Special 34,000(under restoration presently)

http://www.peachparts.com/shopforum/showthread.php?t=125099

Ramblin, I was wondering how you came up with the speaker placement. It looks like you have separate tweeters just in front of the front doors near the floor and on the rear deckwith midrange speakers in the doors and also on the rear deck.

Was this just where they would fit or was there another reason for this choice of placement?

__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

Front speaker placement was to increase the front stage without having the tweeters being directional as happens when they are in the dash or in the doors.
Rear speaker placement is stock except the tweeters which are of course cut into the rear deck...The speakers are both Boston Acoustic 5.25 pro. Install was based on fairly current thinking in the car audio world...

__________________
83 300CDTurbo 307,000
2005 Honda Element 266,000
56 Nash Ambassador Country Club Special 34,000(under restoration presently)

http://www.peachparts.com/shopforum/showthread.php?t=125099

Greetings. How did you get the bass into the passenger area of the car? The trunk looks pretty tight on my '85. Also, why the tweeters in the kick panel vs. the dash? Thanks. Jeff

When I got ready to run the speaker wires up into the dash on my SEC, I couldn't figure out the best way (meaning the easiest yet most suitable way) to do it. I was out of time and haven't had time to get back to it yet. Is there a simple way to run speaker wire up from the floor board on the driver's side into the dash and over to the console? I ask because I'm notoriously bad about making things much more difficult than they really need to be.

__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles