5
MANUAL
| AU PRE TRIODE LAB
CANADA
http://www.triodelab.com
TROUBLESHOOT / QUESTIONS:
a.
The tubes are not glowing - check your power cord, fuses, or try a new rectify tube
(EZ81/6CA4).
b.
Only one channel is playing or hum/low/weak in volume - switch off, and let tubes cool.
Try rotate tubes between L and R channel, and make sure all cables/wires are secured. If
the problem is not resolved after rotating tubes, try rotating L to R channel cables/wires
until you find out if it is poorly connected or defected tubes. If volume/power remains
weak or blurry, try a new rectify tube (EZ81/6CA4)
c.
Upgrades - people talk about upgrades and modifications, should I listen?
Our answer is NO, because each model of amplifiers we designed and made are voiced to how
we wanted. We are not just engineers who purely pursuit our products with a high spec and
performance on paper. We, are also music lovers and musicians who care how instruments and
voices are being portrayed. Each part and transformer are hand-picked and most of them are
what we have been used for decades. Please be warned: if any changes and modifications
done will void the warranty and affects its value.
d.
NOS or NEW Tubes - We prefer new tubes, as they are more consistent.
e.
Do rectify tube (EZ81/6CA4) and regulator tube (6GV8/ECL85/ECL805) make changes in
sound?
YES THEY DO! Like any “high end” tube ampflications, any changes of any tubes, cables, parts,
fuse, and different connectors and sockets…etc, and down to as small as one hook up wire or
different materials / plating on of the tube socket feet will tell. The better the tube equipment is,
the easier to tell the difference. This is the reason why we select the 6GV8 / ECL85 because of its
good tonal quality.