Alexis,,,,

[RON WOODGEARD]

Or any other real stereo installers, troubleshooters.

I'm setting my stereo back up, It's all new, Alpine 9805, a Pyramid Electronic Crossover ( I know that's not a good one) 2-8" Subs, ( Rockford fosgates) 2-Infinity Tweeters, 4-4" Pyramid Mid ranges, 2- 6 1/2" Blaunkpunkt speakers, and I don't have the 6X9" for the doors yet, but they will be there also...

Ok, none of this really has to do with my question

What does ?????,,,,, Every since I bought this dang truck, I have had a electronic interference problem, Now I'm not Ignorant about most installs , But I guess I am with This thing...

I argued one day for ten minutes with a tech. (yea right) at Crutchfield. This Kid told me the interference I was explaining was from the Alternator, I informed him I didn't believe it was, AS the Alternator was not turning and was disconnected....
He insisted that was the problem..

The Interference has something to do with the Ignition, When the engine is running, You can hear the revs, through the Speakers..

OK, Here's what I have done, I have ran numerous Filters, Including a BIG red filter a guy at a CB store sold me,inline with the Alternator. (There's that alternator thing again) I had one installer tell me it was my HEI distributor... I took it out and went Points, ( I have since then went with Pertronic ignition ) I have changed Plug wires, I am now running Accel 8.8 MM race wire, ( the Suppressor ones) I run suppression Plugs....
My stereo is hot wired to the Battery,.. ( along with all other stereo accessories )The ground is grounded to the body within 12" I am also running a Ground strap from the engine to the frame, to the body..

OH yea. If you are talking on a Cordless phone in the truck,( one that comes from the house, I said Cordless, Not Cell ) it also comes through it.... Now if I remember my stereo install basics, That Interference is emitting from the Ant.... I have gotten rid of the stock Mast antenna, and am going to a Powered Hidden,,,, How the heck do I get rid of THE NOISE ????????

If you need any other info, just ask.. I swore when I put it back on the road I was going to be able to listen to Sounds other then Exhaust, Cam Gear drive, and road noise..

AND,,,,,It's getting closer !!!!

[BobbyK]

I heard if the speaker wires are run parallel along side of any power wire you will get the interferance.
I was going to suggest a ground but you seem to have that covered.But just to make sure.You should have a ground strap/cable from:
-neg. side of Bat. to block
-block to frame
-frame to chassis( in several different locations)I have four of them.
Chassis to block,frame to chassis,rocker boxes to frame and wheel wells to frame.

[stickshift_or_walk]

Ron,

I had the trouble BobbyK is talking about with my '02 GMC. I had a whine in the speakers. It might have been the alt, not sure with all the electronic gear on this truck. I couldn't kill the whine with filters, perfect grounds, etc.

The final problem was that the RCA cables for the preamp signal were got too close to the power wires for the amp. In my future installs, I will fix it so these are AT LEAST a foot from each other at all times, until they hook to the amp. Parallel contact is the worst, and if they MUST come together somewhere, make it a 90 degree crossing only.

Since you are pretty sure yours is ignition related, this might not be the cause, but is worth checking out.

Second, disconnect your main system ground, hook it to a jumper cable, then hook the other end of the jumper cable to your battery ground post. That will eliminate any other potential for a ground problem.

I have one other suggestion - have you checked for your noise with the antenna unplugged? I've seen units try to ground though the antenna, which can cause all kinds of interference. Again, it's an easy one to check.

Those are my top three suspicions....SSOW

[Alexis]

check you're PM

[Grim Reaper]

Bypass they pirajunk and see if it goes away. Them things are famous for engine noise.

You not running that pyramid for amp are you? I see no amp listed. Some of those thing claim 100 watts of power...well it's spike power and not real wattage.

Run a good ground from the block to the cab.

[RON WOODGEARD]

Originally Posted by Grim Reaper

Bypass they pirajunk and see if it goes away. Them things are famous for engine noise.

You not running that pyramid for amp are you? I see no amp listed. Some of those thing claim 100 watts of power...well it's spike power and not real wattage.

Run a good ground from the block to the cab.

Grim,,

You're right, I forgot the Amps.. They are a Jenson 40 watt 4 channel, and a 35 watt 4 channel Pioneer.
It just isn't the Pyramids that advertise misleading information, It's many, or most of the companies. I won't be Cranking this much, so I don't need much power. Yes I'm aware of clean Power, and as time, money, and other more important items on the "to do list" get done, I'll concentrate on upgrading one item at a time.

Today, I hooked up the Amps, Crossover, Tweeters, Subs, and the Blaunpunkt speakers. I still have more to hook up, but this really rounded the sound out in itself. I'm having a hard time deciding where to mount the tweeters to get the best Imaging, and bring the sound up to ear level... But that will come together after I get everything else in place and hooked up.

[RON WOODGEARD]

Originally Posted by Alexis

check you're PM

Thanks Alexis,, I have this weekend off, I'll call you then... What's the best time ??

[Alexis]

Fri and sat 7am - 8:30 am. or after 8pmm i have to work at my normal job. Sunday I'm off so you can call me anytime.