RE-ENGINEERED
AMPLIFIERS.
CARY 2A3i AMPLIFIER
2010 Schematic of partially reformed 2A3i amp.
Schematic of better schematic for 10Watts from 2 x 3A3.
Full description and details.
EAR509
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.
MANLEY LABS
MONOBLOC AMP. SNAPPER.
Several schematics for parts of the amp which I almost
completely
rewired to something better than original.
MING-DA 80W
MONOBLOC AMP
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.
TRANQUILITY
INTEGRATED AMP.
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
AMPLIFIERS.
Images, schematics and notes for mods to Quad-II-Forty
power amps to get better performance. Graphs for Po Vs RL.
LEAK
AMPLIFIERS.
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.