Philip Hamm
Senior HTF Member
- Joined
- Jan 23, 1999
- Messages
- 6,874
I found and fixed one problem.
Some kind of electromagnetic interference.
After more toubleshooting I found that if I hooked up my speakers to my Integra home theater receiver they sounded sweet and clean. (One trips the protection if I crank it up, the other does not. More information on this in later posts - see below) If I hooked them up to either the old JVC or the H/K receivers it sounded like ass. The only thing common between the H/K and the JVC receivers was the location.
This is an old photo of the back of my home theater rack and my patch bay and rack for structured wiring under the stairs.
In LOCATION 1 you can see my old JVC receiver at the bottom of the rack. There is a lot of stuff there including an amplified distribution system for an antenna in my attic. I can get great local reception of TV and HDTV. The big old Crown amp taking up five rack spaces is my vintage 1970s Crown DC300A which powers my Infinite Baffle sub. This amp has never had a problem with interference that I could detect (but now it may move as well). Above the old JVC stereo receiver is a Harman Kardon amp I was using for 7.1 in the theater. That amp is gone as is the amp on the box on the floor. I ditched the separates and went back to a receiver about a year and a half ago.
I moved the the box with the amp on it between LOCATION 1 and LOCATION 2 over the LOCATION 2 and put the JVC receiver on top of it. Same problem. I then moved the JVC receiver to the top of the home theater rack which opens into my movie room, to LOCATION 3. All interference is GONE.
It seems my entire problem with distortion for the last two years has been electromagnetic interference from the location of the receiver. I think the big old CROWN amp can filter and handle the interference. It was built to be in a rack with all kinds of other unpredictable stuff. The JVC receiver and my HK3270 (which is a -great- powerful stereo receiver - still for sale here in the for sale forum) were not shielded.
I can't believe it was so simple. It definitely makes me want to get my house tested for Radon I can tell you that. I don't think the antenna distribution machine should cause such havoc with electrical signals.
So now I'm going to reinstall my old volume controls and see how everything works. I'll bet everything is going to work great! I'll follow up.
Some kind of electromagnetic interference.
After more toubleshooting I found that if I hooked up my speakers to my Integra home theater receiver they sounded sweet and clean. (One trips the protection if I crank it up, the other does not. More information on this in later posts - see below) If I hooked them up to either the old JVC or the H/K receivers it sounded like ass. The only thing common between the H/K and the JVC receivers was the location.
This is an old photo of the back of my home theater rack and my patch bay and rack for structured wiring under the stairs.
In LOCATION 1 you can see my old JVC receiver at the bottom of the rack. There is a lot of stuff there including an amplified distribution system for an antenna in my attic. I can get great local reception of TV and HDTV. The big old Crown amp taking up five rack spaces is my vintage 1970s Crown DC300A which powers my Infinite Baffle sub. This amp has never had a problem with interference that I could detect (but now it may move as well). Above the old JVC stereo receiver is a Harman Kardon amp I was using for 7.1 in the theater. That amp is gone as is the amp on the box on the floor. I ditched the separates and went back to a receiver about a year and a half ago.
I moved the the box with the amp on it between LOCATION 1 and LOCATION 2 over the LOCATION 2 and put the JVC receiver on top of it. Same problem. I then moved the JVC receiver to the top of the home theater rack which opens into my movie room, to LOCATION 3. All interference is GONE.
It seems my entire problem with distortion for the last two years has been electromagnetic interference from the location of the receiver. I think the big old CROWN amp can filter and handle the interference. It was built to be in a rack with all kinds of other unpredictable stuff. The JVC receiver and my HK3270 (which is a -great- powerful stereo receiver - still for sale here in the for sale forum) were not shielded.
I can't believe it was so simple. It definitely makes me want to get my house tested for Radon I can tell you that. I don't think the antenna distribution machine should cause such havoc with electrical signals.
So now I'm going to reinstall my old volume controls and see how everything works. I'll bet everything is going to work great! I'll follow up.