Threshold Fet 10/hl Opinion ? - diyAudio
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Old 19th March 2006, 06:34 AM   #1
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Question Threshold Fet 10/hl Opinion ?

From my remember about 1 year ago I had post...

Threshold fet ten/pc schematics

I found a lot of sorce of them schematic / PCB / parts, does anybody want to make them to DiyAudio Project ?

I'm notice in parallel DUAL JFET input(original are NPD5566 but I uesd 2Sk332), better than 1 pair DUAL JFET ? I can't find it's difference.

What's quality of 3N172 mosfet, Could I use BS250 insted of it ? (now I used SMD irfd 9120)

I had searched (real) THRESHOLD FET 10/HL PCB for many months, I'm very tired, Could anybody decide to work with me ?

Regard
analog guy
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Old 19th March 2006, 06:57 AM   #2
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Smile Other pics

Before sucessful.
Top layer.
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Old 19th March 2006, 06:58 AM   #3
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Default Other pics

Before succesful.
Bottom layer.
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Old 19th March 2006, 07:05 AM   #4
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Default Other pics

Before succesful.
Power supply rails used MJ2955/3055 for drive current which fixed regulated voltage from 79l12/78l12 and 741 opamp (I cloned from first link)

!!! COMPLETED !!!
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Old 21st March 2006, 08:46 AM   #5
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Default What's different between Threshold Fet-10HL & E

AHHH...I seen Fet-10HL of Threshold production line

NS-10 Stereo Preamplifier (1977-79)
800A 200 Watt/Channel STASIS Stereo Power Amplifier (1975-77)
400A 100 Watt/Channel STASIS Stereo Power Amplifier (1976-79)
4000 200 Watt/Channel STASIS Stereo Power Amplifier (1977-79)

SL-10 Stereo Preamplifier (1979-81)
CAS-1 75 Watt/Channel STASIS Stereo Power Amplifier (1979-81)
CAS-2 125 Watt/Channel STASIS Stereo Power Amplifier (1979-81)
STASIS-1 200 Watt STASIS MonoBlock Power Amplifier (1979-81)
STASIS-2 200 Watt/Channel STASIS Stereo Power Amplifier (1979-81)
STASIS-3 125 Watt/Channel STASIS Stereo Power Amplifier (1979-81)

FET-1 (two series) Stereo Preamplifier (1981-85)
FET-2 (two series) Stereo Preamplifier (1981-85)

SA-1 160 Watt STASIS MonoBlock Power Amplifier (1984-88)
SA-2 100 Watt STASIS MonoBlock Power Amplifier (1984-88)
SA-3 50 Watt/Channel STASIS Stereo Power Amplifier (1984-88)
S/150 (two series) 75 Watt/Channel STASIS Stereo Power Amplifier (1982-84)
S/200 (two series) 100 Watt/Channel STASIS Stereo Power Amplifier (1984-86)
S/300 (two series) 150 Watt/Channel STASIS Stereo Power Amplifier (1983-88)
S/500 (two series) 250 Watt/Channel STASIS Stereo Power Amplifier (1983-88)
S/1000 (two series) 500 Watt STASIS MonoBlock Power Amplifier (1984-88)

PCX (-X10) Stereo Electronic Crossover (1987-89)
FET-9 Stereo Preamplifier with Phone Stage (1986-89)
FET-10Pc Stereo Phone Gain Stage (1986-89)
FET-10HL Stereo High Level Preamplifier (1986-89)

SA/3.9e 60 Watt/Channel STASIS Stereo Power Amplifier (1990-94)
SA/4e 100 Watt/Channel STASIS Stereo Power Amplifier (1989-95)
SA/6e 125 Watt STASIS MonoBlock Power Amplifier (1990-94)
SA/10e 175 Watt STASIS MonoBlock Power Amplifier (1990-94)
SA/12e 250 Watt STASIS MonoBlock Power Amplifier (1989-95)

S/160 80 Watt/Channel STASIS Stereo Power Amplifier (1992-94)
S/250 125 Watt/Channel STASIS Stereo Power Amplifier (1992-94)
S/350e 150 Watt/Channel STASIS Stereo Power Amplifier (1990-94)
S/450e 200 Watt/Channel STASIS Stereo Power Amplifier (1990-94)
S/550e 250 Watt/Channel STASIS Stereo Power Amplifier (1990-94)
S/1600e 750 Watt STASIS MonoBlock Power Amplifier (1989-1994)

DAC1e Digital to Analog Convertor (1992-96)
DAC2 Digital to Analog Convertor (1995-98)
FET-9e Stereo Preamplifier with Phone Stage (1990-94)
FET-10Pe Stereo Phone Gain Stage (1990-98)
FET-10He Stereo High Level Preamplifier (1990-94)

T 2 Remote Control Stereo Preamplifier (1994-98)
T 3/T 3i Remote Control Stereo Preamplifier (1994-98)
T 50 50 Watt/Channel Stereo Power Amplifier (1994-98)
T 100 60 Watt/Channel Stereo Power Amplifier (1994-98)
T 200 100 Watt/Channel Stereo Power Amplifier (1994-98)
T 400 150 Watt/Channel Stereo Power Amplifier (1994-98)
T 800/T 800D 200 Watt/Channel Stereo Power Amplifier (1996-98)
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Old 15th August 2006, 05:24 AM   #6
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Thumbs up This's a Threshold Fet10/HL schematic

Sorry for lowres picture (If email can be 1meg !!!)

Regard
analog guy
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Old 15th August 2006, 05:26 AM   #7
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Default This's a Threshold Fet10/HL PCBs

Sorry for lowres picture (If email can be 1meg !!!)

Regard
analog guy
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