TURNER AUDIO
Hi there, my name is Patrick Turner and I have a small audio electronics
business located in Canberra, Australia.

Email........info@turneraudio.com.au
    
Telephone...(02) 6241 2760.......10am to 7pm
EASTERN AUSTRALIAN TIME!!!!

Please follow the links below. Website updated during 2011 and on-going.

REPAIRS
REPAIRS.  For most audio power amplifiers, pre-amplifiers, AM/FM receivers,
Home Theatre receivers, AM/FM tuners, turntables, radios, loudspeakers and
other audio related items.

I am moving towards retirement next July ( 2012 ) and will be reducing the range of
services I have been offering.
 
I do not repair CD players, Cassette players, tape recorders, or 4-in-1 receivers,
or any video or TV sets.
See page for minimum charges, trading policies, and notes about
restoring or re-engineering collectable old audio/radio equipment.

HAND CRAFTED PRODUCT
POWER AMPLIFIERS.  11 pages on tubed push pull and single ended power amps
from 4 watts to 300watts.
New pages from 2008 for 55 watt amps with 845 and for 32 watt amps with 13EI. 
4 pages on solid state amps.
1 page on chassis and metal work for future amps.
PRE-AMPLIFIERS.   4  pages for tube line level and phono preamps.
LOUDSPEAKERS.   1 page on full range stereo floor standing speakers.
1 page on measuring speaker performance, design for simple 3 way speaker
and subwoofer for hobbyists with crossover filter charts and a microphone recipe.

RE-ENGINEERING
RE-ENGINEERED AMPLIFIERS.   5 Pages on Quad, Leak, Dynaco, old JBL amps.
I also re-engineer older speakers.

FOR  SALE
CUSTOM MADE AMPLIFIERS. General notes about 300 Watt monbloc amps,
prices for best tubed audio amps.

FOR  SALE, March 2011.
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.  Updated September 9, 2011.
A collection of pre-owned equipment. Solid state amps, Receivers, CD players,
Tuners, Turntables, Cassette players, Loudspeakers,  plus"Others."

TUBES FOR SALE, 2011.
I have some Russian made amplifier output tubes and input tubes and a
collection of tubes for old radios. These are usually supplied where they
are really needed for a new amp project or for a repair or re-engineering job.

ABOUT TURNER AUDIO.  About my career and my business.
It needs a new picture of myself, as I get older, and reduce my
business activities.

INFORMATION
EDUCATIONAL AND DIY.
Additional pages being added in 2011 so some links will not work.
Popular pages on PP OPT Calcs and SE OPT Calcs have been
entirely revised November 2011.
Design of pre-amps, power amps, 4 Watts to 1,000 Watts, basic electronics.
1 page about good audio for the home, 3 pages on basic tube operation,
4 pages on load matching to beam tetrodes and triodes,
5 pages on tube amp power supplies, output and power transformers and chokes,
1 page on fully tubed AM/FM tuner with MPX decoder,
2 pages with 16 miscellaneous schematics.

PATRICK'S OTHER CONCERNS,
last update, 28 April, 2012.
About treatment for prostate cancer, uretic stents, and about possible benefits
to anyone by use of a bicycle, and some personal opinions and views which
may make some people froth at the mouth with rage, and others agree
completely, and a goodly number not care a bit about. :-)

Most of the website was prepared before 2006.
New pages have been added after August 2008.

Download the whole site now to replace older versions. About 23MB.

Postal address, 1 Adams Pl, Watson, ACT 2602 Australia.