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22nd February 2008, 03:00 PM
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#1 |
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diyAudio Member
Join Date: Dec 2007
Location: Bekasi Indonesia
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Class A Pre Amplifier with IC
Hai any one want to build the pre amp? just try this one! i found this schematic of pre amp class a with ic at sam web site, first view this simply schematic but the sound is good! here the schematic
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22nd February 2008, 03:04 PM
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#2 |
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diyAudio Member
Join Date: Dec 2007
Location: Bekasi Indonesia
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This picture of Class A pre amplifier with ic
My Kendang#1 Pre Amplifier |
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22nd February 2008, 03:08 PM
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#3 |
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diyAudio Member
Join Date: Dec 2007
Location: Bekasi Indonesia
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and here inside of my Kendang#1 thats Ex PCB my old power amplifier. I am just do a little jumper and cuting of to modification that pcb !
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22nd February 2008, 03:18 PM
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#4 |
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diyAudio Member
Join Date: Dec 2002
Location: Helsinki
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but the sound is good ..and a better one..
NE 5534 and BD139 and BD140 regards Walter |
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22nd February 2008, 03:25 PM
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#5 |
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diyAudio Member
Join Date: Dec 2007
Location: Bekasi Indonesia
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Yup Yuo Right,,, iam use too ( 139/140 )
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22nd February 2008, 03:48 PM
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#7 | |
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diyAudio Member
Join Date: Mar 2002
Location: Aveiro-Portugal
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Quote:
Hi Walter Don't you find 4,7 K is to low for a preamp input ? The NE5534 (my favorite op amp ) seems overcompensated , he needs 22 pF for unity gain and you use 87 pF for a gain of 2 , any special reason? Regards
__________________
Jorge |
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22nd February 2008, 04:10 PM
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#8 | |
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diyAudio Member
Join Date: Dec 2007
Location: Bekasi Indonesia
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Quote:
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23rd February 2008, 02:38 PM
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#10 |
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diyAudio Member
Join Date: Dec 2007
Location: Bekasi Indonesia
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Or you want to build ( Clone ) this Pre Amp ( BRYSTON BP4 Pre Amplifier )
 regards |
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