In Reply to: Power Amp Help (was MB Quart vs. a/d/s) posted by Tim T on January 27, 2000 at 19:54:08:
I own a 1991 535I auto. When the decision to upgrade the system was made, like you, I started from the speakers. This was a mistake because the first thing that you needed to decide was what kind of an amp you wanted. The reason why is that is the most expensive part of the system. After you pick the amp, the speakers are selected to fit the power requirments. Anyway, I recomend the eclipse. I have had many and this is definitely the supeior product. Once you get the amp, be prepared that the MB Quarts will sound very sharp and you will need a subwoofer to fill in the base, the difference is incredible. You will save yourself some money if you get the larger Eclipse, have the front channels run the front and rears with the rear channels run the sub. If you don't get a good amp, another will be needed for the sub.
This is the system as I have it set up: A/D/S separates in the kick panels, A/D/S 5.25 coaxials in the rear, Soundstreem 10" sub in the skiport (sealed and siliconed) and a large Eclipse 4131 running the whole thing of the factory deck. One problem is that this set up does not allow fading, Who cares, the power gains greatly outweigh the loss of the fader.
Sorry for the long post.
First of all, thanks to everyone who responded. I got the MBQ DSD 213 component set in the front (kick panel and door pillar) and set of MBQ 5.25" coaxes in the rear. And the sound is...well, it's a little better. But everyone was right. I need a power amp. The MBQs are getting the already-crossed-over output from the BMW amp and I know they'll sound better with the right signal and more power. I know, I know, I should have done all my research BEFORE getting the speakers. Live and learn...
: My budget for the amp is $300-$350. I'm considering Alpine MRV-F407, Eclipse 3640, and Rockford Fosgate Punch 400a4. Any experiences you'd like to share? My research indicates that they're all good products with arguably the Alpine being the best (and most$$$) and the Eclipse and RF pretty close but different - Eclipse more HiFi, RF more pure power.
: I've looked at all of the archived digests from Bob H and have a pretty good understanding of the wiring in my 94 540i. I've even taken the BMW amp out and checked it over. It doesn't seem like installing the new amp myself is an impossible task. Tedious, yes. Difficult, no. Am I deluding myself?
: If I'm looking at an amp in the 40-50Wx4 channel range will I need to run a new power line from the battery or will the power line that goes to the BMW amp suffice?
: Will I need to worry about heat if I put the new amp in the same location as the BMW amp? Of course I would have to mount the amp on a piece of plywood (or something similar) and mount the plywood to the BMW amp's bracket.
: Other than the wiring issues that Bob has discussed, what else should I be aware of?
: If I pay for installation, what is a fair price? I can't figure out if it should be more than a non-BMW install because of how wierd the BMW setup is or if it should be less because the whole wiring harness is easily accessible.
: Oh, by the way, I'm sticking with the stock Pioneer head unit and changer. It works fine and I like how it's integrated into the dash display.
: Thanks everyone,
: Tim T
: 94 540i, Auwesome speakers/mediocre sound...for now