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This is my bid to earn a 'sticky' thread. My first attempt at a Pre-amp. It's dual-mono throughout. The RIAA is all-BJT based off the famous NAD3020 circuit. There is an all-BJT shunt regulator based off Salas designs. And there is a cathode follower output buffer loaded on an active 'amplified resistor'. Haven't tested it yet, but this thread is for piccies 😀
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Joined 2009
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Phonoclone with Salas shunt regulator
Thorens TD850 with SME309 tonearm
plus DIY motor power supply and motor base
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Thorens TD850 with SME309 tonearm
plus DIY motor power supply and motor base
An externally hosted image should be here but it was not working when we last tested it.
Member
Joined 2009
Paid Member
Hello,
your DIY gear are great !
I add some of my DIY gear:
DIY Le Pacific JFET RIAA;
DIY OBH 8 SE RIAA;
DIY inDiscreet Phono
Pulse circuit for strobe LED (you see clear markings on platter instead of blurred )
External PSU for DD motor.
All my DIY RIAA together..but I think that there will be another - addiction ...
your DIY gear are great !
I add some of my DIY gear:
DIY Le Pacific JFET RIAA;
DIY OBH 8 SE RIAA;
DIY inDiscreet Phono
Pulse circuit for strobe LED (you see clear markings on platter instead of blurred )
External PSU for DD motor.
All my DIY RIAA together..but I think that there will be another - addiction ...
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Member
Joined 2009
Paid Member
Member
Joined 2009
Paid Member
My latest project completed...
Rek-o-kut lp743 turntable
Rabco sl8 arm rebuilt by Dave Shreve
I took the motor apart and scrubbed out all of the gunk. Motor mounts were replaced. It runs so smoothly that you cant hear the motor while holding it in your hand.
Rek-o-kut lp743 turntable
Rabco sl8 arm rebuilt by Dave Shreve
I took the motor apart and scrubbed out all of the gunk. Motor mounts were replaced. It runs so smoothly that you cant hear the motor while holding it in your hand.
Attachments
Muffsy PP1 (Audiokarma CNC)
Muffsy PP2
Muffsy PP3 with external PSU
Muffsy PP3 inside a Dual 1212
Muffsy MC Head amp
Muffsy PP2
Muffsy PP3 with external PSU
Muffsy PP3 inside a Dual 1212
Muffsy MC Head amp
Phono pre, MM, MCHO, MCLO.
Variable gain, C load, R load.
2 riaa eq: passive, active; passive.
In/out rca, xlr.
PSU: dc filter, AC cmc, solid filtering RCLC, 4 superregulators.
Variable gain, C load, R load.
2 riaa eq: passive, active; passive.
In/out rca, xlr.
PSU: dc filter, AC cmc, solid filtering RCLC, 4 superregulators.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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Joined 2009
Paid Member
Yeah !
You have a lot of RIAA amps !
Ahaja - wow, very adventurous - love what you did with the dip switch selection tables on the top panel 🙂
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I gave away the one with integrated psu to my father and the Dual with integrated riaa to my brother in law, so I only have two MM's and the MC head left. 😉