Has anyone done any speaker upgrades I have the 85 240 with the two 4inch front speaker's. And was wondering if anyone has made a new speaker fit behind the original grill thank you.

 

Our 240 had a pair of JL Audio component 6.5" cut into the rear parcel shelf, crossovers mounted under the shelf in the trunk.... The front speakers were a pair of Rockford-Fosgate 4" 2-ways that needed 2uF bass blocker caps. All driven by "25W x 4" from a Pioneer CD/aux/bluetooth deck. I put the power in quotes, because thats 'music power', not RMS. still, it drove it just fine, and sounded great adjusted right. the rears overpowered the fronts, hah.

 

Crutchfield's web site is pretty good about listing specs by model. As noted a 4" will fit but when doing replacement speakers you need to consider both the cutout and depth - you may be able to upsize but would need to pop off the door card to do some inspection. Another consideration is whether you want to retain original grills or go with the new model. If you decide to add new locations vs simply replacing what's there, then you need to consider how you set up your amps and manage speaker impedence. Most cars use 4 ohm speakers and when you run speakers in parallel the amp sees the cumulative impedance (ie if you have two pair of 4 ohm speakers in parallel the amp sees 2 ohms of impedance - which forces the amp to make twice the current...). I had an old Audi Quattro where I put 5 1/4s with separate tweeters in the rear deck, 5 1/4s in the rear doors, 4 inchers in the front doors and 3s in the dash - driven by a pair of RCA connected amps with 25 rms per channel. No room for bigger speakers in the rear so I took the "Bose 901" approach of many small speakers to produce the sound of a big speaker!

 

So my car is a 85 which means there is only 2 speaker's in the car two in the front they are both 4inch and would want to keep the original grill for the athetic. I just want something that can handle more than the current speaker's in the car they get muddy and distorted. I was thinking of using some frostgate speakers

 

IIRC< the fosgate 4" speakers we used were a bit too deep, magnet was too big, so it interfered with the window, so we milled a spacer block out of 1/4" or 3/8" thick wood that was the same color as the tank interior, the spacer had exactly the outside profile of the factory grill, so it was door, spacer, speaker, grill... you had to look real close to realize the grill was lifted.