Those are DIY speakers with NewForm Research 30 inch ribbons and Scan Speak 8 inch woofers. Passive crossovers are my design and quite benign load.
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Hello Damir,
is it possible to get the LT-Spice file, since i plan to convert this layout into a TO-247 layout (2K1058/2SJ162 or the EXICONs). Also a more comfortable size is my plan (about 14x8 cm)
Thanks and best regards
Günther
PS: Did you solve the problems with Biino? I was surprised to hear that Birger closed the shop.
is it possible to get the LT-Spice file, since i plan to convert this layout into a TO-247 layout (2K1058/2SJ162 or the EXICONs). Also a more comfortable size is my plan (about 14x8 cm)
Thanks and best regards
Günther
PS: Did you solve the problems with Biino? I was surprised to hear that Birger closed the shop.
Yes of course, here is with Hegllun models and better protection.
No, I have not solved problem with Binno, strange thing is that he visits this forum from time to time, and I tried to contact him via PM but no answer.
It realy bad design the control board schematic does not correspond to the real board layout, not working properly with remote controller and so on.
Really very very bad behavior.
Damir
I have an unpopulated volume control
ler board from this seller and all parts from Reihelt.
If this is bad designed i lost my money🙁
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Probably the Reodor's POW is that if you want to make a quantitative statement your gear's performance must be at least 10 times better than performance of the DUT. I.e. if your gear's loopback THD is at -140dB, you can qualify a reliable measurement of -120dB DUT's THD. Otherwise, since performance of the DUT approaches those of your measurement gear, you can make only qualitative statements - "THD not more than ...."
Witch is the only thing that matters, when it is about distortion ;-)
Mr.Marsh had given a link that explain how to achieve measurements of distortion+ noise down to -160dB by chaining two measuring devices.
Is it working as volume controller and not working as input selector or not working at all?
It sims it's working as a volume controller, but I could not do real test with the music as input selector does not work at all.
The volume controller correctly moves when used encoder, but with remote it jumps by two steps on each volume button press. Input selector looking on display moves incorrectly when remote was used.
I lost any hope, and I have to learn how to reprogram it, but busy with other things.
Or:
http://www.ti.com/lit/ds/symlink/lm4562.pdf
See, P. 23 how to measure thd+ noise at -40dB under the thereshold of the measurement instrument.
Power Amp tested with new larger current power Xfmr ----- the THD at 700 Watts (!) - 2 Ohm load and 10KHz and both channels driven is .007%
🙂
-RM
🙂
-RM
And also, when can we see some good internal pictures to see lead dressing, placements, layout, etc.?
The measurement results are impressive and I (for one) want to see how it was done.
mlloyd1
The measurement results are impressive and I (for one) want to see how it was done.
mlloyd1
Its about 26A peak per channel, 52A peak both channels.
Well over 100A ripple current on PS caps, could be 200A.
I hope the box of Mallorys is inside
The DC PS uses many parallel electro caps to divide the current sharing and to lower Z. Also, dual pri windings.
The new transformer has great current output capacity.
We will do IMD soon. Wiring isn't finished but I will show interior of finished amp also. Not sure you will be able to see all wire routing, though.
THx-Richard
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Something amaze-me. The disproportion between the active parts and the means to cool it.