Stereo Problem in my 54 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Handfull 54 · 09-25-2011, 03:19 AM

I just installed an Alpine 9886 stereo and a KTP 445 amp. The stereo plays fine when the truck is parked but the radio cuts out for a second several times when I'm driving,. The radio itself stays on just the music or voice cuts out. I am using two Alpine 5" speakers in the doors. I have 2 6x9 speakers for the back but have not hooked them up yet as I am getting the upholstery done soon. Any suggestions on where to start?. I wiggled all the wires while parked in the garage but it plays fine. Take it out and a block later it cuts out. I've hooked up several stereos in the past with no problems, so I'm a little puzzled this time. I have the antenna bolted to a bracket on the frame between the cab and the bed and a small foam ball on the antenna half way down the antenna so it won't hit the body. I am going to try a Cd next to elimenate the antenna. Thanks in advance for any help.

Dave in California

77chris03 · 09-25-2011, 03:23 AM

Sounds like a loose wire under the dash
Posted via Mobile Device

Handfull 54 · 09-27-2011, 05:20 PM

After exhausting all efforts I took the radio back to Alpine. They will check it for me and fix whatever is wrong. One thing I did find out is if you use their KTP-445 amp, it must be used with 4 speakers. That is why it was clipping when I turned up the volume. I cannot repeat all the technical stuff cause I don't remember it all but this amp knows how many speakers are hooked up to it and wants 4 speakers to drive and NOT 2. Thought I would pass this along.

Handfull 54 · 10-01-2011, 03:58 AM

The nice people at Alpine called me to say there is nothing wrong with my 9886 model radio. So I went to their facility in Torrance, CA. and picked it up. The technician gave me another radio harness and told me to try it out. I went home and hooked up the radio with the new harness which is the same as the harness I already had and it works great. Remember this was a brand new radio that had been sitting in my closet for 2 years. Go figure.

AceX · 10-02-2011, 02:39 PM

Loose pin in the harness it sounds like.

09-25-2011, 03:19 AM	#1
Handfull 54 Registered User Join Date: Jul 2011 Location: Moorpark, California Posts: 159	Stereo Problem in my 54 I just installed an Alpine 9886 stereo and a KTP 445 amp. The stereo plays fine when the truck is parked but the radio cuts out for a second several times when I'm driving,. The radio itself stays on just the music or voice cuts out. I am using two Alpine 5" speakers in the doors. I have 2 6x9 speakers for the back but have not hooked them up yet as I am getting the upholstery done soon. Any suggestions on where to start?. I wiggled all the wires while parked in the garage but it plays fine. Take it out and a block later it cuts out. I've hooked up several stereos in the past with no problems, so I'm a little puzzled this time. I have the antenna bolted to a bracket on the frame between the cab and the bed and a small foam ball on the antenna half way down the antenna so it won't hit the body. I am going to try a Cd next to elimenate the antenna. Thanks in advance for any help. Dave in California

09-25-2011, 03:23 AM	#2
77chris03 Registered User Join Date: Jun 2009 Location: CoNrOe Tx Posts: 1,343	Re: Stereo Problem in my 54 Sounds like a loose wire under the dash Posted via Mobile Device __________________ 68 C10 Stepper #1- GONE 68 C10 Stepper #2 1977 Chevy Cheyenne...gone...was my first Chevy 04 Tahoe Z71, 04 Silverado 2500HD, 04 Sierra 2500HD 99 Sierra Stepside, 17 Denali HD, 84 K10 My 1st build-- http://67-72chevytrucks.com/vboard/s...d.php?t=379333 My 2nd build-- http://67-72chevytrucks.com/vboard/s...d.php?t=700310

09-27-2011, 05:20 PM	#3
Handfull 54 Registered User Join Date: Jul 2011 Location: Moorpark, California Posts: 159	Re: Stereo Problem in my 54 After exhausting all efforts I took the radio back to Alpine. They will check it for me and fix whatever is wrong. One thing I did find out is if you use their KTP-445 amp, it must be used with 4 speakers. That is why it was clipping when I turned up the volume. I cannot repeat all the technical stuff cause I don't remember it all but this amp knows how many speakers are hooked up to it and wants 4 speakers to drive and NOT 2. Thought I would pass this along.

10-01-2011, 03:58 AM	#4
Handfull 54 Registered User Join Date: Jul 2011 Location: Moorpark, California Posts: 159	Re: Stereo Problem in my 54 The nice people at Alpine called me to say there is nothing wrong with my 9886 model radio. So I went to their facility in Torrance, CA. and picked it up. The technician gave me another radio harness and told me to try it out. I went home and hooked up the radio with the new harness which is the same as the harness I already had and it works great. Remember this was a brand new radio that had been sitting in my closet for 2 years. Go figure.

10-02-2011, 02:39 PM	#5
AceX >130dB Moderator Join Date: Aug 2006 Location: Sacramento, CA Posts: 2,130	Re: Stereo Problem in my 54 Loose pin in the harness it sounds like. __________________ Living Life @ 130dB LED Tail Light Conversion; How-to Friend. Father. Brother. RIP El Jay ------------------------------------------------------------------------------------------------------------------------- CLICK HERE and for less than $0.07 a day, you too can help support and build a better forum.



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