K5 audio upgrade

[bowtieguy79]

I wanted to upgrade the audio system in my K5 but did not want to loose that stock look that the dash had, 1978 Vintage Sanyo 8 track AM/FM, in-dash Stereo provided.

Seen here providing tunes from yesteryear….


I did a lot of internet searches and this write up inspired me to do similar work.

http://67-72chevytrucks.com/vboard/s...d.php?t=229621

I like how he kept the original look and was able to use his audio knob to control volume from his Ipod to his sound system. I wanted to do the same but did not want to hack up a good working Stereo, and kind of dig the old school 8 track player!

Lead me to search for an amp volume controller and a Ipod to RCA wire on Amazon.

Here is what I ordered up.


I had a Coustic amp laying around that I used. I also ordered up a pair of 6.5” and 3.5” polks to put in the Blazer. Don’t worry I didn’t cut any holes that where not there when I got the truck, it had a pair of 6” Pioneer’s that matched the Sanyo for age!

I put the amp under the drivers seat to be out of the way and be closer to the driver for adjustments if needed.



Now I can enjoy Pandora, an Ipod/Ipad, an 8 Track or AM/FM



Speakers and cables are all that I ordered, I spent just under $120 for all of it. It sounds amazing, but is missing some much needed bass. I’m planning to add in a 6” bazooka tube behind the spare tire later on this summer. Don’t need to rattle my teeth so that should be plenty, and won’t take up much space either.