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Old 5th September 2012, 07:34 AM   #421
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This round of group-buy is closed now, and I cannot accept further requests.

I have already ordered the PCBs.

I will send to you all more information about the build of the SYMASYM, the BoM, ... via EMail this afternoon.

Best regards - Rudi_Ratlos
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Old 5th September 2012, 09:09 AM   #422
joshvi is offline joshvi  India
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Got LTspice files,Thank you

best regards
joshvi kuriakose
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Old 5th September 2012, 12:19 PM   #423
jprco is offline jprco  Canada
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Rudi, payment sent. Can you please send me the build, LTpsice and related files as well so I can read up so more before starting the build later in the month.
Thanks again for the good work.
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Old 5th September 2012, 12:43 PM   #424
cjkpkg is offline cjkpkg  United States
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Has anyone used the TO-3P package MJ21193/4 for the amp? Looks like mouser has them or are we better off with NJW0302G/NJW0281G or even NJW3281G/NJW1302G?

Will the large Sankens fit this board? I saw that the would be troublesome on the TO-3 board but has anyone tried them for the TO-3P board? 36.4mm VS 20mm width...It does not appear that there is at least 8mm on either side according to the drawing I saw in this thread.

Lastly...can someone explain what drives the need for reducing the feedback cap? Is is the speed or the output capacitance?
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Old 5th September 2012, 01:34 PM   #425
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Carl, the big SANKENs (like 2SC2922 and 2SA1216) do not fit on the PCB.
I have built a SYMASYM with MJ21193 / MJ21194 TO3-transistors myself.
So: MJL21193 / MJL21194 (TO264 - case) will do it.

I will try and describe the sound differences between the different types of the transistors in the EMail that I will send you this afternoon.

Best regards - Rudi

P.S. Carl: please have a look at this article: http://web.telecom.cz/macura/symasym.html

Last edited by Rudi_Ratlos; 5th September 2012 at 01:38 PM.
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Old 5th September 2012, 04:44 PM   #426
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Gentlemen,

I sent you all the SYMASYM Builder's Manual, BoM, drill-master, LTSpice-modell ...
Did you all receive it? Are your EMail-addresses up-to-date?

Best regards - Rudi_Ratlos
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Old 5th September 2012, 04:49 PM   #427
Junie is online now Junie  Philippines
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got it Rudi, Thanks.
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Old 5th September 2012, 05:10 PM   #428
mj777 is offline mj777  Philippines
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I received it, Thanks
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Old 5th September 2012, 05:19 PM   #429
evette is offline evette  Canada
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Send a message via Yahoo to evette
I haven,t. Evette
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Old 5th September 2012, 07:51 PM   #430
lung is offline lung  Germany
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I received it, Thanks
Rolf
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