Mezmerize DCB1 Building Thread - Page 42 - diyAudio
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Old 19th November 2011, 06:51 PM   #411
Salas is online now Salas  Greece
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Use 9mA quad for the signal section if you got. Less THD than using 6mA.
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Old 20th November 2011, 07:00 AM   #412
Marinos is offline Marinos  Greece
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Thanks Salas,
What about the others ?
If you had a choice, what would you chose ?
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Old 20th November 2011, 09:03 AM   #413
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i get .5/2.5mv dc does that seem wrong i read under 5mv is ok, .5 seems off the matched quad i bought are 9.15/9.15/9.15/9.13 ? and 10.2/10.7v for power supply anything else to test ?
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Old 20th November 2011, 09:42 AM   #414
AndrewT is offline AndrewT  Scotland
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Are both your output offset voltages a negative value? i.e. did you measure +0.5mVdc or -0.5mVdc? Similarly did you measure +2.5mVdc or -2.5mVdc for the other channel?
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Old 20th November 2011, 06:25 PM   #415
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+10.9mVdc, -10.2mVdc -.5mVdc, -2.5mVdc
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Old 20th November 2011, 06:29 PM   #416
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by momomo67890 View Post
-.5mVdc, -2.5mVdc
good. That tells you that the two jFETs in each pair are the correct way around. The CCS jFET should be the lower Idss. This results in a slight -ve offset.
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Old 9th December 2011, 01:53 AM   #417
delecoy is offline delecoy  United States
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Would an Antek AS-1215 ( 2x15V, 100VA, 3.3A ) be acceptable for the Mezmerize? Going over the threads I've seen recommendations for anywhere from 12-15V, 30-100VA. I already have one, and was under the impression that only its size would be an issue. Its a bit chunky. This will be my first DIY build so just beginning to learn, needless to say.
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Old 9th December 2011, 02:39 AM   #418
Salas is online now Salas  Greece
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Acceptable. Can do no harm. Its just bad economy.
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Old 9th December 2011, 02:48 AM   #419
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Quote:
Originally Posted by delecoy View Post
Would an Antek AS-1215 ( 2x15V, 100VA, 3.3A ) be acceptable for the Mezmerize? Going over the threads I've seen recommendations for anywhere from 12-15V, 30-100VA. I already have one, and was under the impression that only its size would be an issue. Its a bit chunky. This will be my first DIY build so just beginning to learn, needless to say.
i used one that i had for a different project worked out fine.
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Old 9th December 2011, 03:15 AM   #420
delecoy is offline delecoy  United States
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Thank you much!
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