Ok, I've got my doors deadened and the speakers installed. I was up til about 1am doing it, but it's done! :D Unfortunately, I didn't get a chance to measure the volume of the doors. :( Sorry guys.

Anyway, I need some help! I've got the left channel running fine, and it handles it's gains all the way up without distortion etc. But the right channel, it seems to run a little bit hissy, and as soon as the gains go past about 1/8th of their volume, you get a REALLY loud piercing feedback shriek. It sounds like it's about it's like 1 - 4khz shriek. Somewhere in that range anyway... The really OUCH sound.

What can cause this? Both sides are wired the same way. It kinda sounds like a feedback loop, and as soon as it gets too much gain it just goes into massive overdrive. But how the heck did I manage a feedback loop?

worry not! :D I pulled the speaker out of the door and the negative terminal was shearing off... thus a patchy contact. Problem soldered. Sounds sweet now! And damn the 3 coats of brush on sound deadening was worth it! Plus the 18mm spacers, and the sealed service holes, and the sheet deadener on the skins and trims! The doors are very much dead. :D YAY!

well, good work!

I was gonna go visit u at like, 5:30 after i had my nap with the foam peanut things...but eh, its too late now.

i need to audition your good work one day... :)

Time to move onto boot? plus, are u any good at tuning nitro car engine carbys? should go to that carpark one night...sub+nitro car = uber noise pollution...I LIKE :D

my future brother in law is a small engine mechanic. He's pretty good with little carbies! I can ask him questions!

My doors are sooooo dead. And those speakers are pretty awesome for the price! It doesn't even sound like there's a sub in the back. It's just meaty at the front. Which I really like!! I'm going driving now to have a nice listen in style.

The tweets are mounted right up high on the kicks under the dash, facing the opposite persons ears. Seems to work really well, there's a nicely defined stage there! I'm amazed, coz like I said to eek... I have great theoretical ideas, but lose the patience when actually doing them... so I'm suprised when ANYTHING I do works. ;)

heh heh heh.... after your nap with the foam peanuts.... you have like, really strange taste in bed companions. lol :bowrofl:

What speakers are they? and what sound deadening paint did you use?

they are jaycar 80w rms kevlar 6.5" woofers, plus jaycar super car tweeters, and matching jaycar super car tweeter crossovers. Cheap, but pretty incredible.

Sound deadening? I used K+H underbody deadener. 1 litre of it did 3 coats on both doors. And it's pretty heavy in the tin. I chose it because it was the heaviest of all the 1 litre cans.

I used 10mm to seal the service holes, with 30m of '100 mile an hour' tape... anyone who wonders, this is SOLID, you can punch the things and they don't move.

I also used that bostik sheet deadener. 4 sheets of it cut up and dispersed over the skins of the door and trim made pretty goodcoverage. I targeted the service holes and the thinner metal first and then went from there.

I also put a dynaXorb rubber thing behind each driver in the doors. The superglue stuff I loaded on so it'd get a good bond to the bitumen. It actually worked.

The speaker spacers are 18mm mdf, bolted to the door, with fairly large solid surrounding area. The drivers are screwed in through the trim, sandwiching it all together.

I think that's about all I did. It tooks fricking ages, and my arms are sore, but the doors are like lead and the speakers really work well. So for about 350 all up, it's not bad. Now nothing in my system is stock. yay.

time to move onto the boot when I can be bothered. The sub will annoy me before long and I'll have to make my new box.