TURNER AUDIO
Hello everyone, from Patrick Turner. I retired from the audio
business in 2012.
I no longer manufacture audio amps or speakers or do any repair
work.
Last update 22 June 2018.
Size is over 60MB, so download a copy to a CD now.
This website has much information about vacuum tube operation and
circuit
analysis and analog test gear. Anyone is free to build their own
gear based on
the information about many amplifiers I built between 1996 and
2012.
I have kept my interest in my website to guide others who are good
craftsmen
and can understand the mental concepts simple and mathematics
needed to
make good analog electronics.
My emaile Add Ress is in the .gif image,
Pardon my bada spellink to stop spam botz.
The .gif image stopped 98% of the 100+ daily spams I used to get
in 2012.
PATRICK'S OTHER CONCERNS
About health matters. Polite comments are welcomed.
VELOSOPHY I've cycled 130,000
km since 2006, and have a few tips for the older roadie.
BOTH KNEE JOINTS
REPLACED. my story about having both knee joints
replaced.
PUSH PULL POWER AMPS 1996 AND 2012
300W MONO BLOC Class
AB1, basic details.
300W
amp input/driver and output stages.
300W amp power
supply.
300W amp active
protection.
300W amp dynamic
bias stabilization.
300W amp power
vs load graphs.
300W amp images.
100W mono bloc, 2004
3 x 6SN7, 6 x EL34, UL.
100W mono bloc, 2014
More on 100W UL amps.
8585W integrated 2
channels, each 4 x 6550, CFB.
Mr Zel's
100-100W integrated 2 channels, each 4 x EL34, CFB.
80W power amp 4 x EL34
like 8585.
5050W integrated 2 x
KT88/KT90 per channel, UL.
SE 845 55W Class A mono bloc
2 x 845 parallel.
SE35W mono bloc 4 x
parallel SE EL34, CFB.
SEUL22W mono bloc 2005 1 x
SE13E1, UL.
SE32W mono bloc, 2008
1 x 13E1, UL + CFB.
SE32W mono
bloc, 2012 1x 13E1, UL + CFB.
SE31W SE and PP mono
amps 1 and 2 x 13E1, CFB.
4+4W SET, 2A3 2
channels each 1 x 2A3.
2323 integrated JBS
triode PP 2 x 6CM5 ea channel.
OTL amplifiers pros
and cons for OTL amps.
FUTURE AMPLIFIERS amp
chassis, details of metalwork chassis available.
SOLID STATE AMPS
SOLID STATE AMPS 1
2 x 300W amps, class AB.
SOLID STATE AMPS 2
One channel 300W, class AB.
SOLID STATE AMPS 3
1959 JBL amplifier re-build.
SOLID STATE
AMPS 4 2 x 50W monoblocs, class A.
SOLID STATE AMPS 5
Class A mosfets, tube input.
PRE-AMPS, 1995 TO 2006
INTEGRATED PRE-AMP
2006 MC+MM phono, line, tone, 2 2SK369, 2 6EJ7, 4 x
12AT7, 4 x 12AU7
ROCKET PHONO PRE-AMP
2005 2 x 2SK369, 2 x 6DJ8, 2 x 12AT7, 2 x 6CG7
NEMO LINE LEVEL
PRE-AMP 2 x 6CG7, solid state PSU
LINE LEVEL PRE-AMP FROM 2003 2
x 12AU7 2 x 12AU7.
LOUDSPEAKERS
LOUDSPEAKERS 1 Hand
made loudspeakers 2000, SEAS drivers
LOUDSPEAKERS 2 Designs
for diyers.
LOUDSPEAKERS 3
Test methods for loudspeaker response & impedance.
LOUDSPEAKERS 4
Loudspeaker crossover designs.
LOUDSPEAKERS 5 Hand
made speakers, dual concentric Tannoy drivers.
RE-ENGINEERED AMPS
CARY 2A3i AMPLIFIER 2
x 10W with 2 x 3A3.
EAR509 MONO BLOC Made
1979, 85W.
MING-DA 80W MONOBLOC
Made 1996, 85W triode PP.
MANLEY LABS MONO
BLOC SNAPPER 85W with 4 x EL34.
TRANQUILITY 3030
Made 2003, 2 x 30W.
JADIS SE300B MONO BLOC
Made 1994, 2 x parallel 300B.
QUAD 22 PRE-AMPS
Made 1960, preamp.
QUAD II POWER AMP Made
1960, several versions.
QUAD II FORTY AMP
Made 1995.
LEAK AMPS Made 1955.
DYNACO ST70 Made 1960.
DYNACO MK-IV MONO BLOCS
Made 1965, now with KT88.
RCA 30W MONO AMP Made
1960, now with KT88.
FOR SALE
One pair Dynaco MkIV 45W
mono blocs I will only consider good offers.
AMP CHASSIS METALWORK 12
chassis for 4 types of monobloc amps.
OUTPUT
TRANSFORMERS FOR SALE 58 types of OPTs for diyers and
others.
OUTPUT
TRANSFORMER INFORMATION About OPT for sale, use,
choice.
OUTPUT
TRANSFORMER ANALYSIS Properties of OPT for sale.
POWER TRANSFORMERS
FOR SALE 103 types power trans for diyers or others.
POWER
TRANSFORMER INFORMATION Properties of PT, choice,
conditions of sale.
CHOKES FOR SALE
A page with some new and old chokes for sale.
MISCELLANEOUS FOR SALE
A small number Junk Items.
SOME TUBES FOR SALE
I have small stocks of Russian and NOS or used tubes tubes for old
radios and amps.
EDUCATIONAL AND DIY
GUITAR AMPS General
guide to guitar amp design, 3 schematics.
AUDIO IDEAS General ideas
for good audio at home.
BASIC TUBE OPERATION 1
Basic tube operation, diodes, triodes, pentodes.
BASIC TUBE OPERATION 2 Lots
more on basic tube properties.
BASIC TUBE OPERATION 3 Even
more and about Ra, µ, gm.
BASIC TUBE OPERATION 4 Lots
about 6550 tests
BASIC TUBE OPERATION 4A
About Ra, gm, µ, and tube models.
BASIC TUBE OPERATION 5
About Differential triode input and drivers.
VARIOUS WAYS TO ARRANGE OUTPUT TUBES.
SE AMP OUTPUT
STAGE CONFIGURATIONS
PP OUTPUT STAGE
CONFIGURATIONS
IDEAL ANODE LOADING.
LOAD MATCHING 1, SE
TRIODES
LOAD
MATCHING 2, SE BEAM TETRODES+PENTODES
LOAD
MATCHING 3, PP TRIODES
LOAD
MATCHING 4A, PP BEAM TETRODES+PENTODES
LOAD
MATCHING 4B, PP BEAM TETRODES+PENTODES
LOAD
MATCHING 4C, PP BEAM TETRODES+PENTODES
LOAD
MATCHING 5, PP BEAM TETRODES
PP OPT CALCULATIONS.
PP OPT Calcs 1
PP OPT Calcs
2
PP OPT Calcs
3
PP OPT Calcs 3A
PP OPT Calcs
4
PP OPT Calcs
5
SE OPT CALCULATIONS.
SE OPT Calcs 1
SE OPT Calcs
2
SE OPT Calcs
3
SE OPT for 1 x 13E1
WINDING OPT, PT and
chokes
OTL AMPS, PROS AND CONS.
SPEAKER
MATCHING TRANSFORMERS
TUBE AMP POWER
SUPPLIES
POWER TRANSFORMERS AND CHOKES
Chokes 1 Basic
chokes for CLC PSU filters.
Chokes 2
Chokes for LC PSU filters.
Chokes 3
Chokes for DC anode feed.
POWER SUPPLY FOR
TESTING TUBES
RADIO RE-ENGINEERING
About re-engineered AM radios.
TURNER
AM-FM TUNER
KITCHEN AM RADIO
Kitchen AM tube radio with added features.
AM GENERATION
WITH SOLID STATE
RF GENERATION WITH
TUBES AND AM AND FM
THD MEASUREMENT
AMPLIFIER
FREQUENCY RESPONSE TESTING
VAC
VOLTMETER-1
VAC
VOLTMETER-2
WIEN
BRIDGE OSCILLATOR
WIEN
BRIDGE OSCILLATOR WITH TUBES
MISCELLANEOUS
SCHEMATICS 1
MISCELLANEOUS
SCHEMATICS 2
REPAIRS
I retired in 2012. I cannot accept any new customers, or repair
new gear which old customers may have purchased.
I offer limited repair services for gear I have made new or
re-engineered for old customers before August 2012.