The stronger the 50Hz flicker is, the easier for the eye will be to follow the sync with the pattern.
What I found best to do for tuning the antiskating force, is to play modulation tracks on test records. When the mistracking distortion noise finally appears on the highest modulation bands, that scraping noise should be appearing equal between channels. No worries if the end setting does not tie in grams with the downforce (VTF) used.
Yes the alignment can be done following the steps of setup.
Important things are:
-1st of all: the screws of the cart must be a little unscrewed to do well the alignment.
-Step 5 be sure that the diamond follows always the arc line from the edge of the disc to the center of the disc.
-Step 6 with the grid check both lines: lateral and front in order that this one parallel with the lateral lines and the lines previous and later(posterior)
-Last: before check the VTA be sure the screws are tight screweds & check the overhang.
The protractors can not check the antiskating.
Hi Salas,
Let me know when you do the alignment, when I do mine I can't resist to smile, for half hour more or less of mine time & 0€00....
Let me know when you do the alignment, when I do mine I can't resist to smile, for half hour more or less of mine time & 0€00....
Usefull pictures to check the axis in tonearms:
With photo-shop programm you can do this:
Enjoy
Merlin El Mago
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
With photo-shop programm you can do this:
An externally hosted image should be here but it was not working when we last tested it.
Enjoy
Merlin El Mago
Hi Salas,
Could I use the Simplistic fono shunt reg. 46V for Low MC because I don't see posted the 45V that you recommend me for gain 63dBs?
Could I use the Simplistic fono shunt reg. 46V for Low MC because I don't see posted the 45V that you recommend me for gain 63dBs?
Sorry at this moment I see that you post the information PS regs. in post 2809.🙂
I suppose that for Tx now I need 40V 50VA, right?
Cfilter now will need 63V, right?
Leds for RIAA & shunt regs. can't vary: 1.7V/20mA, right?
Sorry again for these a lot of questions, I am want to be sure 1st to start the Simplistic.
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Yes to all.🙂
P.S. Leds can be up to 1.9V if you don't mind some more heat on the sinks. You can always fix that by tweaking R1's value.
P.S. Leds can be up to 1.9V if you don't mind some more heat on the sinks. You can always fix that by tweaking R1's value.
I would avoid cabling there. Prone to pick up hum. It can be toggle also, but on the board.
Hello Salas,
Why do you use in this schematics IRFP9140 and 2N5457 instead of IRFP9240 and 2sk170.
There is any impuvement or I can use the old ones?
Ciao
Thanks
Guglielmo
Why do you use in this schematics IRFP9140 and 2N5457 instead of IRFP9240 and 2sk170.
There is any impuvement or I can use the old ones?
Ciao
Thanks
Guglielmo
The voltage is high and it will run the BC550 cooler than with a BL. GR are not common anymore. A bit more noise than a 2SK, but less Cgs. Will do OK. If you have a 4-5mA 2SK, use it. 9140 is just a bit better I have found. Can be used always.
288mW on the BC550. Hmm... better less. Put a 47R between its G,S so to bring down its idss if you don't have any 2N.
