I picked up a used Lunar 200x2 amplifier today and it has a weird remote turn-on issue. If i use the remote turn on from my head unit or step up through a relay, the amplifier and head unit (and relay when used) just cycle click and nothing turns on. If I jump over from the positive to the remote turn on, the amp fires up, plays fine, and doesn't even blow the 3 amp fuse I used to protect it.
The only "diagnostic" issue I found is that the remote turn-on at the amplifier seems to show 1.005 k ohm of resistance to ground until it is energized. I also tried the head unit's remote turn on lead connected directly to another amplifier's remote turn on input and it was able to turn it on with no problems. I believe I safely ruled out the head unit as a problem.
I was wondering if this could be a simple fix or something requiring a trip back to QAS?
The only "diagnostic" issue I found is that the remote turn-on at the amplifier seems to show 1.005 k ohm of resistance to ground until it is energized. I also tried the head unit's remote turn on lead connected directly to another amplifier's remote turn on input and it was able to turn it on with no problems. I believe I safely ruled out the head unit as a problem.
I was wondering if this could be a simple fix or something requiring a trip back to QAS?
An externally hosted image should be here but it was not working when we last tested it.
My external relay is a black Bosch. Another friend said my Alpine 9885 may be too weak to energize the relay and/or the amp's remote turn on. The last time I had a problem with an Alpine not turning stuff on, it was with my 7941. I am getting tired now, but I may try a Pioneer HU that I have laying around and see if it offers a better remote turn on signal.
The thing that is puzzling me is the fact that the amp works when I jump over from power to remote turn on using a 3 amp fuse to protect the connection.
The thing that is puzzling me is the fact that the amp works when I jump over from power to remote turn on using a 3 amp fuse to protect the connection.
If you use the head unit's remote turn-on output to energize the relay coil alone, will the relay engage and remain engaged?
The head unit will energize the relay and I read the stepped up voltage through it. It will also turn the known working amplifier on through the relay (just tested that).
Also, I think I was told the wrong model of the amplifier. It is the same size as my L2125 so I am thinking that this it is a L100x2.
Also, I think I was told the wrong model of the amplifier. It is the same size as my L2125 so I am thinking that this it is a L100x2.
Connect terminal 30 of the relay to the remote turn-on of the amp. Connect terminal 87 to the B+ terminal of the amp. Does the amp power up?
It does the weird cycling thing when I connect the relay this way too. The only way to get the amplifier to turn on is to either jump it from power or put +12v on a toggle to remote. This issue has me scratching my head.
I measure between 200 and 230 mV across the coil as it is switching on and off. Back to my head scratching.
Is the ground side of the coil connected to a good ground?
Is the remote turn-on connected to anything other than the relay coil?
Is the remote turn-on connected to anything other than the relay coil?
The ground is good. Everything is going through a distribution block connected to my Iota DLS-55. I am wondering if negative voltage is passing back through the amplifier's remote turn-on as it is energized, but I am having a hard time trying to figure out how to test for it.
I am going to try another head unit to see if that makes a difference or not.
I am going to try another head unit to see if that makes a difference or not.
My knowledge of amps is limited, but I hear Lunar amps are just plain different. Tons of solid SQ power. your amp is a L100x2 .I've never heard of L200x2. They also make a few different HC models. He's 10 miles down the road
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