August 2001

Enjoy the

M500 Kit Building log

Review by Thorsten Loesch
Click here to e-mail reviewer

Picture 3

The Kits unpacked, Transformer covers removed to avoid scratching them. All Parts and used tools are in the picture.



Picture 2

Right, prepared for the first step in the assembly, just got to have cool Drink before I start....



Picture 1

That was good, now what are we going to do with that lot of overcooked spaghetti?



Picture 5

Okay, wired up the bridge rectifier for the 300B Heater.



Picture 6

Now I have finished wiring up the rectifier Valve - hey this is fun.



Picture 7

Okay, the heater connection for the Driver Valve is done, I needed to extend the wires a bit to reach there.



Picture 11

The wire and high temperature plastic sleeving to be used for most internal wiring.



Picture 9

Inserting the ground wire from the Power Supply board and finished wiring up the Choke and other PSU bits.



Picture 12



Picture 13

Wiring up the output Transformer primary.



Picture 14

All sorted out for the 300B's Anode connection and the supply to the driver.



Picture 10

One complete set of electronic parts. Now where do all these go?



Picture 15

Wiring up the input connection. The input wire is my secret weapon - "Die Vergeltungswaffe" - superthin magnet wire with lots of air and shielding.



Picture 16

The other side of the input wire, on the RCA input jack.



Picture 21

The capacitor for the 300B Heater supply is fitted and the heater wiring completed.



Picture 17

Driver Valves cathode resistor and Black Gate bypass capacitor fitted.



Picture 18

All other passive components fitted to one amplifier.




Picture 22

And the other fully wired Amplifier.



Picture 23

Overview of both completed amplifiers, coming with liquid refreshment as well.



Picture 26

After clearing the modification with the kit supplier this RC Combo biases the Driver Heaters to around 90V to avoid exceeding the Heater/Cathode rating of older 6SL7 Valves, this is now included as standard.



Picture 28

Voltage balancing and discharging resistors for the power supply, again this mod was cleared with the factory and is now fitted as standard.



Picture 29




Picture 30

Voltage divider and balancing resistors fitted and wired up.



Picture 31

Completed amplifier, fitted with the protective cage for the valves. Time to take them into the lab for testing and then into the living room for listening.













































Quick Links

Audiophile Review Magazine
High-End Audio Equipment Reviews


Equipment Review Archives
Turntables, Cartridges, Etc
Digital Source
Do It Yourself (DIY)
Cables, Wires, Etc
Loudspeakers/ Monitors
Headphones, IEMs, Tweaks, Etc
Ultra High-End Audio Reviews


Enjoy the Music.TV


Editorials By Tom Lyle
Viewpoint By Roger Skoff
Viewpoint By Steven R. Rochlin
Various Think Pieces
Manufacturer Articles

Show Reports
Florida Intl. Audio Expo 2023
Capital Audiofest Show 2022
KL International AV Show 2022
Toronto Audiofest Show 2022
CanJam SoCal 2022 Show Report
Pacific Audio Fest 2022 Report
T.H.E. Show 2022 Report
HIGH END Munich 2022
AXPONA 2022 Show Report
CanJam Singapore 2022 Report
Salon Audio Montréal Audiofest 2022
Click here for previous shows.


Audiophile Contests
Cool Free Stuff For You
Tweaks For Your System
Vinyl Logos For LP Lovers
Lust Pages Visual Beauty


Resources & Information
Music Definitions
Hi-Fi Definitions


Daily Industry News

High-End Audio News & Information


Partner Print Magazines
Australian Hi-Fi Magazine
hi-fi+ Magazine
HiFi Media
Sound Practices
The Absolute Sound
VALVE Magazine


For The Press & Industry
About Us
Press Releases
Official Site Graphics


Contests & Our Mailing List

Our free newsletter for monthly updates & enter our contests!




Home   |   Industry News   |   Equipment Reviews   |   Press Releases   |   About Us   |   Contact Us


All contents copyright©  1995 - 2023 and Enjoy the®
May not be copied or reproduced without permission.  All rights reserved.