| Introduction
This page details the issues I've faced (or am facing) with this installation and the steps I'm taking (if any) to try and solve them. Issues: Background whine
Once I completed assembly, I noticed that there was background alternator whine, albeit at a low level - but just high enough to be annoying. I eventually got enough enough with it to tear down the front of the dash and and ground the RCAs to the deck (a typical fix for this kind of problem). Once I put everything back together, I noticed that the negative leads for the front and rear speakers were not fastened properly to the speaker terminals - likely the real cause of the noise. I fastened them down properly. The system now has absolutely no audible background noise, even at high volume levels. Auto Time Alignment not functioning properly
Possible phasing problem between front and rear speakers
Imaging is a bit off ("hole in the center" type of sound at times)
I'm getting some really strange results with the deck's auto time alignment feature. When I ran the auto-EQ and time alignment feature, it returned the following adjustments for the speakers (right-side driver listening position): | Speaker | Adjustment | Delta1 | Delta2 | | Left Front | 163.75 cm | 36.25 cm | n/a | | Right Front | 127.50 cm | n/a | n/a | | Left Rear | 371.25 cm | 243.75 cm | n/a | | Right Rear | 298.75 cm | 171.25 cm | 72.50 cm | | Subwoofer | 400.00 cm | 272.50 cm | n/a | However, using my own measurements (physical distance as well as phasing), I ended up with the following: | Speaker | Adjustment | Delta1 | Delta2 | | Left Front | 145.00 cm | 40.00 cm | n/a | | Right Front | 105.00 cm | n/a | n/a | | Left Rear | 135.00 cm | 30.00 cm | n/a | | Right Rear | 83.75 cm | -21.25 cm | 51.25 cm | | Subwoofer | 155.00 cm | 50.00 cm | n/a | I'm not sure what's causing the problem, but it might be a phasing issue, as I'm noticing what might be phasing problems between the front and rear speakers, and a "hole in the center" type of sound at times. Buzzing / Rattling from front doors and rear hatch
As expected, the front door panels buzz at lower frequencies. The fasteners for these panels are for for just keeping them on the doors, rather than making an airtight rattle-free connection between the panels and the doors. I'm presently contemplating a number of different ways of tackling this, including making sub-enclosures for the speakers to isolate them from the doors. Subwoofer enclosure vibrates too much for my liking
Yes, amazingly enough, even with all of the bracing that I put into the enclosure, the damned thing still vibrates. The only thing I haven't done so far is bolt the enclosure down to the floor, which I plan to do shortly. If that doesn't work, I'm going to add an extra layer of 3/4 ply to the baffle. [head unit]
[main speakers]
[amplifiers]
[subwoofers] |