Details are in the first post. I will repeat.
I only understand basic electronics and like building things.
If you mean electronics. NO.
Regards
My affordable LM3886 DIY amplifier.
- Thread starter Hiten
- Start date
I only understand basic electronics and like building things.
Regards
Hi all,
More cheap
fun added. Built a bypassable Tone control and DIY'ers popular CNC Phono Preamp(This was lying around loose). This will also be on sale to make funds for new project.
some details
(1) Chinese tone control board (2) CNC Phono PS (3) CNC Phono Preamp (4) RF Blocking capacitor
from common ground to chassis ground (5) Insulating sheet between board and metal chassis (6) Magnetic shield
(7) Separate Transformer for Phono preamp
As I didn't have shielded wire I used Signal and ground separate, twisted wire for each input.
(8) Mechanical Selector switch from old amplifier (From DIY audio member) (9) 6 Pin Tone defeat switch . As Tone preamp is alwasy ON Used 6 pin switch which lifts signal+ground wire for both channels
(10) Power supply wire kept floated as below it are phono signal wires (11) Though wires stay put to chassis I fixed few cable organisers.
Indicator light on front amplifier plate is taken from tone control board.
Preamplifier and power amplifier. I tried to keep aesthetics of both the same.
My total build cost was around 5000/- (Only material cost)
Sources for materials (this may help diyers)
~Cabinet, RCA Sockets, Front plate, Feets, Screws, One transformer, Hookup wires, Heatshrink, fuse holder, Power switch etc. are from local sellers.
~Tone Preamplifier board, Phono Transformer, Cable organiser are from Amazon.
~Volume and tone knobs are from Gtech Audio. Tamil Nadu
~Mechanical Selector Switch is from DIYAudio Member
~6 Pin Push Tone defeat switch is from Matha Electronics Cochin
I have put single RF blocking ceramic cap on common one channel ground of all inputs as Keith had recommended in last build. If any rectification is required do tell.
Thanks and regards
More cheap
fun added. Built a bypassable Tone control and DIY'ers popular CNC Phono Preamp(This was lying around loose). This will also be on sale to make funds for new project.some details
(1) Chinese tone control board (2) CNC Phono PS (3) CNC Phono Preamp (4) RF Blocking capacitor
from common ground to chassis ground (5) Insulating sheet between board and metal chassis (6) Magnetic shield
(7) Separate Transformer for Phono preamp
As I didn't have shielded wire I used Signal and ground separate, twisted wire for each input.
(8) Mechanical Selector switch from old amplifier (From DIY audio member) (9) 6 Pin Tone defeat switch . As Tone preamp is alwasy ON Used 6 pin switch which lifts signal+ground wire for both channels
(10) Power supply wire kept floated as below it are phono signal wires (11) Though wires stay put to chassis I fixed few cable organisers.
Indicator light on front amplifier plate is taken from tone control board.
Preamplifier and power amplifier. I tried to keep aesthetics of both the same.
My total build cost was around 5000/- (Only material cost)
Sources for materials (this may help diyers)
~Cabinet, RCA Sockets, Front plate, Feets, Screws, One transformer, Hookup wires, Heatshrink, fuse holder, Power switch etc. are from local sellers.
~Tone Preamplifier board, Phono Transformer, Cable organiser are from Amazon.
~Volume and tone knobs are from Gtech Audio. Tamil Nadu
~Mechanical Selector Switch is from DIYAudio Member
~6 Pin Push Tone defeat switch is from Matha Electronics Cochin
I have put single RF blocking ceramic cap on common one channel ground of all inputs as Keith had recommended in last build. If any rectification is required do tell.
Thanks and regards
keith_correa
Well-Known Member
Looks superb! You should be proud! Well done! 
Indeed. The neatness and the routing of the wires superbly done and shielding the noisy power section was done professionallyLooks superb! You should be proud! Well done!
Subbu68
Well-Known Member
Your builds look very professional.
Silencer
Well-Known Member
Commendable effort. Very neat.
Hope to see more of your diy builds. Well done.
Hope to see more of your diy builds. Well done.
surfatwork
Well-Known Member
Excellent work. Good layout, nicely wired up.
Looks neat and well laid out. If you look at my preamplifier, it's a wiring mess due to my constant tinkering and R&D, but the noise level is not been measurable by either my DMM or by my Visual analyser PC based tool. It must be below 0.1 mV - my guess
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