2015年6月14日 · Hi jvhb, I used an SMPS in previous version just because I had it handy and the voltage was suitable but I prefer a nice linear PSU, from reasons which I'll bring out if you …

2015年6月14日 · jvhb, please measure and report the following voltages : 1. across the R2 (4R7) - should be about 50-60mV 2. across the R8 (47R) - should be about 500-600mV 3. between …

2021年6月28日 · After my Denon PMA-560 output relay tripping thread, diyaudio user Karl vd Berg asked for a scan of the service manual. I thought I'd do that and put it on a "PMA-560 fan …

2013年12月10日 · hi Jvhb i never ever use a resistor divider for constant voltage! - a 7812/7912 will do. yes i do not expect a hugh current so no power problems. yes start a new thread, i am …

2018年4月1日 · Hi, I am having some problems with a set of Radford RA-50 Renaissance mono amps, and I could use some help. Schematic is attached. They have now twice gone faulty …

2018年5月1日 · jvhb. Member. Joined 2013. audioberg.dk/ 2018-05-07 12:08 pm #11 2018-05-07 12:08 pm #11 I am not an ...

2021年6月11日 · jvhb. Member. Joined 2013. audioberg.dk/ 2024-10-30 4:47 pm #112 2024-10-30 4:47 pm #112 Wasn't the point ...

2015年7月29日 · jvhb said: Hej Jens 🙂 You probably solved the problem by now, but here is the schematic just in case. The mid and upper ranges are pretty regular stuff, but those 2527uF …

2016年4月18日 · Hi, I have a problem with one channel in a Nakamichi PA-7II (220v european version), and I was hoping someone familar with these could chime in.. I tried to attach the …

2014年4月28日 · Can we end this confusion. jvhb I assume has built with the 10R 1W resistors that conform to what is shown on the Rev 2.0 schematic shown below for R22 and R25. The …