Unfortunately yes!!Guess I won't make that mistake again 😱
On the up side one board now powers up ok Just another 8 led's to go.I cannot believe I did that.
On the up side one board now powers up ok Just another 8 led's to go.I cannot believe I did that.
I don' t remember how many times I checked leds orientation, in order not to make a mistake!
Make me feel worse than I already do why don't you 😉
The left channel appears to be ok but not the right.I have the following voltages:-
LEFT RIGHT
VDC 42.7 42
G/Rail 32.9 12.8
TP1/TP2 3.7 7.4
G/TP1 7.7 7.4
G/TP2 3.9 0.0
The trimmers on the right channel no difference to the voltages.The led's are all on but the 9530 heatsink does not warm up.
The left channel appears to be ok but not the right.I have the following voltages:-
LEFT RIGHT
VDC 42.7 42
G/Rail 32.9 12.8
TP1/TP2 3.7 7.4
G/TP1 7.7 7.4
G/TP2 3.9 0.0
The trimmers on the right channel no difference to the voltages.The led's are all on but the 9530 heatsink does not warm up.
You took out some main semi there, looks its a Mosfet. See Vgs readings on both Mosfets first, see Vbe on Q4x and then we think about it.
Ask George to post further photos and more impressions now he had listened for two days then. That will make your day.😀
I achieved 7.74/7.76v with 2 red and two green LEDs. I used 2SK117 (4.57mA same as in Q7) and 18.5v supply (12 AA alkaline).
3 LEDs for PSU (5.58v) was not a problem.
The phono is playing for a few days now and couldn' t be happier.
First residual noise is almost non existent and this is important in my setup, as I use high sensitivity horns. Resolution has gone up with no apparent sign of harshness. I can hear things I didn 't before, as the breathing of the musicians in some recordings.
But the biggest difference is the scale of depth, height and panoramic extension of the stereo image, from before. You can easily tell the position of an instrument in the orchestra. Strings are so silky smooth with no sign of grain. Voices also.
Bass has become tighter and more defined.
Music is more effortless and dynamic.
I attach some pictures of the whole setup as the folded simplistic has found his place back on the music system.
Salas, this an excellent effort. I have built many simplistics, but for sure I didn't expect this! Really high end sound, and maybe even more.
The only problem is that my other half not seeing me much lately, and although she is very understanding, she started to complain as I spend most of my time listening🙂
EDIT something doesn' t work with attachments, will post later
First residual noise is almost non existent and this is important in my setup, as I use high sensitivity horns. Resolution has gone up with no apparent sign of harshness. I can hear things I didn 't before, as the breathing of the musicians in some recordings.
But the biggest difference is the scale of depth, height and panoramic extension of the stereo image, from before. You can easily tell the position of an instrument in the orchestra. Strings are so silky smooth with no sign of grain. Voices also.
Bass has become tighter and more defined.
Music is more effortless and dynamic.
I attach some pictures of the whole setup as the folded simplistic has found his place back on the music system.
Salas, this an excellent effort. I have built many simplistics, but for sure I didn't expect this! Really high end sound, and maybe even more.
The only problem is that my other half not seeing me much lately, and although she is very understanding, she started to complain as I spend most of my time listening🙂
EDIT something doesn' t work with attachments, will post later
Last edited:
Hi, I haven't been able to source the proposed resistors so I'm building mine with
0,6w metal foil 1% resistors. Measured them all to find the closest match between
channels. Will this affect SQ and in what way? The important parts was included in
the minikit.
Regards
0,6w metal foil 1% resistors. Measured them all to find the closest match between
channels. Will this affect SQ and in what way? The important parts was included in
the minikit.
Regards
There is a crucial difference between women and vinyl records regarding the "listening" issues George. The latter never walk away when you don't listen to them all the time.😀
As for the sonic impressions, great. Do enjoy it.🙂
*Check the max sizes in the upload manager also.
If they are 100ppm or under for temperature stability spec they usually come across as more transparent than plain ones. Especially in the loading, signal path, and Vref roles.
He was DIY music.... Liszt miniature from ivory, was on my moms piano, long time ago. Beethoven on the other speaker!