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Old 11-27-2015, 08:44 AM
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Join Date: Oct 2010
Location: Portsmouth VA
Posts: 74
77 240D modifications dash speakers, Zebra-wood grills, sub woofer, rear 6 x 9s

Decided to replace the Becker stereo with a better sound system without jeopardizing too much of the Mercedes Character.
Here is the speaker plan.

DASH
Installed 4" MB Quartz speakers driven straight off the head.
Modified grille covers with 1/4" slices of 1 1/2"ABS pipe for tweeter room.
cut circles into grilles with a fine coping saw blade, used Gelled Super Glue to bond ABS rings to non ABS grilles.

REAR DECK
MB Quartz Onyx 6 x 9s Driven by 1500w amp.
In order to "flush mount" Holes were cut through metal deck , rear of speaker vented through a baffle box set in trunk area then returns through middle vent back into cab (not designed to thump the neighborhood only to improve base quality in cab area)

REAR SEAT SUB
MB Quartz MONO 10" square sub woofer
Internal seat was converted into a hidden vented baffle enclosure.
Removed arm rest for speaker space. (also not designed to thump the neighbors, but if I ever wanted to thump the neighbors I could just by rolling the windows down)
Driven by 2500w mono amp
Sub amp level control is mounted under custom made center console cover.
Attached Thumbnails
77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-img_20151126_072125.jpg   77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-1448630574802.jpg   77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-img_20151127_082038.jpg   77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-img_20151127_082243.jpg  
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Old 11-27-2015, 08:53 AM
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Join Date: Oct 2010
Location: Portsmouth VA
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more pictures
Attached Thumbnails
77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-1448023190178.jpg   77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-img_20151127_090025.jpg   77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-1448630307709.jpg   77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-img_20151127_081912.jpg  

Last edited by Put Put; 11-27-2015 at 09:08 AM. Reason: add pics
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Old 12-04-2015, 08:51 AM
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Join Date: Jan 2002
Location: New Jersey
Posts: 3,966
Nice work! I can't make it out - do the pic tubes match the dash color?
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  #4  
Old 12-05-2015, 10:41 AM
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Join Date: Oct 2010
Location: Portsmouth VA
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Thank you!
The tweeter rings cut from black ABS are a higher gloss than grill covers, so I just dulled them down with 320 and 600 sandpaper.
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77 240D modifications dash speakers, Zebra-wood  grills, sub woofer, rear 6 x 9s-1448540444633.jpg  
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