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Re: Just replaced mine... (archive)

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Posted by Rush on September 18, 1999 at 07:10:21:

In Reply to: Re: Just replaced mine... posted by Jeff Coco on September 17, 1999 at 11:32:39:

: Robert,
: I'd really like to compare notes with you, as it sounds like we almost duplicated the same set-up. I've done a few upgrades with past cars, all 3 series
: though. I bought my 530i about 2 months ago, and of course the factory system stunk. After being in my last car for 5 years, I had forgotten how bad the
: factory systems really were. The one thing I wanted to keep this time though, was the weather band in the head unit. And since the car already had the
: Alpine factory CD changer, I figured I'd just go with a speaker/amp upgrade.

: I've been a Polk Audio fan from 15 years ago, and even though they've gone a bit commercial, it's still a pretty good product. I used the old MM5520 co-axes
: in my 318is. So for the 530i, I got the EX2550 2 piece components for the front, and the newdb5520 co-axes for the rear. Then to keep things clean in the
: trunk, I wanted a 5 channel amp, so that I could include my Bazooka tube that I would pirate from the 318is. I've seen the comments about setting a 10" sub
: driver to blow through the rear arm rest/ski sack location, but what I like about the tube is it's portability. Since it mounts with straps, if you're ever
: tight for space in the trunk, you can detach and remove it in 3 minutes.

: I ended up going with the new Sony Explod XM4053eqx for the amp. It's a 4x40 and 1x100, with a build in equalizer and variable high/low pass filters.
: Crutchfield had a nice clearance on a Clarion 5 channel, but it sold out quickly. They were $399 on this Sony, and then I came across a web site called
: AutoToys.Com. It's a audio/accessories retailer out of NJ that has some interesting stuff, and even more interesting pricing. The Sony amp was $275 there
: on special, but the special prices fluxuate almost daily. I've seen it for as low as $257. What really grabbed my attention though, were the MB Quarts that
: they had.

: Quart is high end enough that it hasn't filtered down to the discount/net retailer level. I was able to get both the components for the front and the co-axes
: for the rear at what amounted to 30% off of msrp. The classic series 213 components were $230, and the model 1213 co-axes were $95, compared to $199
: for the Polk components,and $80 for the Polk co-axes. As much as I like the Polks, the Quarts are unreal. No matter what you put through them, you get the
: feeling that they're saying, "keep it coming". I know the only thing that could limit them is the amp, which I'm not going to change at this point. I do this
: for my own enjoyment in the car, not competition.

: Anyway, the only problem that I've run into is white noise. It's definitely input signal related. I get the hiss with the system on, but at volume 0. The hiss
: will cut out when the cd changer is changing between discs, which again tells me it's the input signal. I've also tried using an alternate source going into
: the amp (my portable cd player with a pre-amp output), and don't get the hiss. I spliced RCA ends onto the factory twisted pair in the wiring harness, so
: I'm thinkning one of two things. Either my splices aren't shielded enough, or I'm picking up interference from the power supply line.

: Since you've kept the factory wiring harness in tact, I'd really apprecite knowing if you experience any of the hiss - assuming that you're using the factory
: head unit. It would help my diagnostic process.

: TIA,
: Jeff Coco
: 95' 530i
: 93' 318is - looking for a good home

The new amp is more sensitive than the old amp and there fore is amplifying the back ground noise, the speakers could also be more sensitive that will aggravate the situation. If the amp has an input volume control, turn it down, the hiss level will go down. The volume on the radio/cd player should be at full on for the loudest volume you want and that is how to adjustment the volume on the amp. If there is no volume on the amp you may have to install an atenuator between the radio and amp.
Hope this helps,
91 E34 M5 Sharked, A/D/S amps & speakers

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