UntilThen
Headphoneus Supremus
- Joined
- Jun 16, 2015
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Thanks for the great tips @petemac110First port of call - a proper internal cleaning of the loudness switch (and other switches at the same time). If this doesn't help, there is a fault in the preamp or power supply circuitry which supplies the preamp stage.
The loudness contour is essentially an EQ circuit which is switched into the signal path when you hit the loudness button. It's very simple and whilst it does place additional load on the power supply when engaged at loud listening levels (due to the additional bass EQing) a healthy amp should not be affected.
You can trouble-shoot whether it's a broader power supply issue by disengaging the loudness switch, running the amp to the same volume levels, ensure the tone controls are switched on, and wind up the bass to the maximum setting. If distortion occurs and the flashing occurs, it might be a power supply issue. If not, it is related to the loudness circuit only.
When you mention the lights going on and off rapidly, are you referring to every LED indicator light on the unit (including source selection, power amp direct selection etc) or just the power indicator (which flashes to show that the amplifier's protection circuit is engaged and the speaker output relay is engaged)? It could be that a fault is tripping the protection circuit.
Thanks for the great tips @petemac110
What du you recommend to use as cleaner?
I'll test more later today regarding the lights etc. It's been 3-4 months since I tried it so my memory is not 100% shure of the details you asked.
Congratulations. You'll spend many hours enjoying that baby.
For my purpose of using this for headphones, it make the hd800 and lcd-3f sound really good. Who would have thought that $170 (aussie dollars) would bring so much joy and sweet music.
@UntilThen next port of call is the beastly Pioneer SX-1250/1280 receiver. You need to have one of these. Power anything and everything you may have
I agree completely. Vintage receivers simply cannot be beaten for a myriad of reasons. However....
None of my receivers can compete with my GOTL. Its not that the receivers sound bad. They dont. The GOTL just simply sounds much better. But then again im talking about a 1500.00 amp with over 500.00(and soon that figure will double) of tubes vs. $75.00 for my 881.
Im quite curious to see what you think once you get your GOTL back.
The 707DR should be similar to this 907MR when you remove the front face:
Pete, that's an amazing looking 907MR. Looks so new. Is it yours?