CARY 2A3i AMPLIFIER
2010 Schematic of partially reformed 2A3i amp.
Schematic of better schematic for 10Watts from 2 x 3A3.
Full description and details.
MONOBLOC AMP FROM 1979
Original schematic, hand drawn badly but not by me, and my
schematic with improvements. Full details about faults in original
design and what to do about it.
MONOBLOC AMP. SNAPPER.
Several schematics for parts of the amp which I almost completely
rewired to something better than original.
No original schematics which do not deserve to be published here.
My completely new schematic using same tubes, 2 x 6SN7, 2 x 300B and 2 x 845.
MY OTHER schematics for PP 845 and class AB1 or class A1 operation.
All descriptions and details with some pictures.
My schematic for vastly better operation for 30W AB with KT66.
Pic of under chassis.
JADIS SE300B made
in 1994 without good design or quality
control. My full amount of work is shown for my own schematic, and all
rewiring work and replacement of very faulty OPTs.
QUAD 22 PRE-AMPLIFIERS.
Images, schematics and notes for mods to Quad22 preamps.
QUAD II POWER AMPLIFIERS.
Edited pages in 2014 with more images, schematics and notes for mods to old Quad II
power amps to get better performance, the original Quad II amp schematic.
Graphs for THD comparing use of KT66 or KT90, and with Dynaco MkIV.
QUAD II FORTY
Images, schematics and notes for mods to Quad-II-Forty
power amps to get better performance. Graphs for Po Vs RL.
Images, schematics and notes for mods to TL12 Leak Point One
mono bloc power amps, and active protection, and graphs for frequency
response and power output vs load.