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Old 5th January 2014, 11:52 AM   #211
borys is offline borys  Poland
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LC
I do not know, my card is measuring properly only to 20k so I can measure 2nd harmonic only at 9-10k. But i thik is good enough to listen the music anyway.
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Old 5th January 2014, 04:50 PM   #212
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LC
I do not know, my card is measuring properly only to 20k so I can measure 2nd harmonic only at 9-10k. But i thik is good enough to listen the music anyway.
It's not 'good enough' to listen the music it's the best
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Old 5th January 2014, 08:44 PM   #213
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Thanks borys.
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First One VSSA
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Old 19th February 2014, 08:54 AM   #214
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Few more builds on the way.
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Old 19th February 2014, 10:01 AM   #215
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Few more builds on the way.
Nice builds,
Regards
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Old 20th February 2014, 07:53 AM   #216
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THX

This kind of amp is very neutral/natural in sound and I think not for all would be good.

I think your idea from the 1st post would be nice to try and finish in 100%. I remember first prototype with 4 LTP's and it was sounding stunning but I do not know how to resolve the clipping issu on sine wave above 5kHz, other than that it was super.
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Old 20th February 2014, 09:58 AM   #217
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Few more builds on the way.
Are those BG5 ?

Didiet
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Old 20th February 2014, 11:11 AM   #218
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THX

This kind of amp is very neutral/natural in sound and I think not for all would be good.

I think your idea from the 1st post would be nice to try and finish in 100%. I remember first prototype with 4 LTP's and it was sounding stunning but I do not know how to resolve the clipping issu on sine wave above 5kHz, other than that it was super.
Yes I must finish this amp
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Old 18th November 2014, 09:40 PM   #219
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Originally Posted by borys View Post
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THX

This kind of amp is very neutral/natural in sound and I think not for all would be good.

I think your idea from the 1st post would be nice to try and finish in 100%. I remember first prototype with 4 LTP's and it was sounding stunning but I do not know how to resolve the clipping issu on sine wave above 5kHz, other than that it was super.
Borys did you try to add 4x1N4148 on this prototype?
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Old 18th November 2014, 11:09 PM   #220
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It was so long time ago that I do not remember, but it should help a bit, sansui was using some diode clamps at the VAS stage as far I remember. Maybe the diode clamps at the DD stage will be more helpful ??
Your desingn with 4 LTP's is very good, low Vce transistors can be used in all LTP's.
I have had MJE340/350 at the VAS stage and they are a bit slow recovering from saturation (sticking), better transistors here would help too.
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