NORTH READING ENGINEERING
NORTH READING, MASSACHUSETTS 01864 USA
CUSTOM LOUDSPEAKER CROSSOVER
CROSSOVER NETWORK REBUILDS AND MODS INCLUDING DUPLICATION OF
VINTAGE OR NLA DESIGNS
McINTOSH AMPLIFIER RESTORATION AND MODIFICATION
Contact North Reading Engineering
WELCOME TO NORTH READING ENGINEERING
North Reading Engineering is a
Massachusetts certified business founded to provide engineering
services to those engaged in home and professional audio.
I provide loudspeaker crossover network solutions, loudspeaker design,
vintage amplifier restorations, amplifier modifications and
CUSTOMIZED LOUDSPEAKER CROSSOVER NETWORKS
The acoustic performance of networks built are verified using a wide range
of tools including analog circuit simulators, high sampling rate acoustic
analyzers, distortion analyzers and precision measurement microphones.
request that drivers be provided to my location for measurement. Only then
can the actual results be substantiated and design iterations made. I'm
able to perform measurements in quasi-anechoic conditions using near and
far-field techniques with access to a large indoor facility that allows
ground-plane measurements to 4m. Networks are then designed to obtain the
correct acoustic response. Measurement service for a filter project are
done without fee since it provides an opportunity to develop potentially new
products or measurement techniques.
NETWORK REBUILDS, MODS,
Have an old JBL, KLIPSCH or EV network
that you would like made, repaired or duplicated? Pricing is competitive and I'll also
provide performance data that demonstrates the network is actually operating as it's
VINTAGE McINTOSH AMPLIFIER REPAIR, RELIABILITY
SERVICING, OVERHAULS AND RESTORATIONS
Do you have a 70s-era McIntosh
amplifier or integrated that hasn't been checked for
performance since Dave O'Brien of the famed McIntosh Amplifier
Clinics last looked at it? If so, I have the experience,
tools and test instrumentation to properly assess the condition of your amplifier
and make it a lot better. More information on amp servicing can be found
Yes, the first generation McIntosh
amps can be modified to provide better sound. More information on a
new preamplifier board, shown below, that provides a significant upgrade to these vintage
classics can be found
READING ENGINEERING AUDIO FORUMS
- Lots of technical stuff and
adding content all the time.
MODELING THE KLIPSCHORN BASS HORN (Part I)
- The Beranek Model, LTSPICE and a slew of
PHOTOGALLERY OF A KLIPSCHORN REPLICA BUILD -
Building a Klipschorn is not for the faint of heart!
A KLIPSCHORN NETWORK FOR BUILDERS - A
measured design you can build yourself.
Places To Visit
VINTAGE MODERN HIFI
NORTH READING ENGINEERING FACEBOOK PAGE
Website and contents
property of John Warren
of North Reading Engineering, North Reading, MA 01864 USA. No part of the
above may be copied and published, in part or in total, without permission.
2017 John Warren