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Instruction Manual Covering:
MB 845i Mono Block
Amplifiers
Contents
1 Introduction & Final Inspection
2 Quick Set Up Guide
3 Connecting inputs & outputs
4 Getting the best performance
5 Trouble Shooting
6 Bias & Hum Adjustment
7 Valve Replacement
8 Specifications
9 Guarantee
10 Packing Instructions
1 Introduction
Thank you for purchasing the
MB 845i
.
These pure valve mono block amplifiers are the
result of years of careful design and listening tests
with a wide range of speakers. The amplifiers are
hand built using carefully selected audiophile
components. The transformers are hand wound
using 99.9999% pure low oxygen copper and higher
grade special Japanese long grain iron. Finally each
amplifier is valved, carefully commissioned and
tweaked for best performance in Leicester UK.
The MB845i is very similar to the original keeping all
the original features but with several improvements
including our “Low Distortion Tertiary” output
transformers and an improved power supply.
In order to get the best out of your amplifier, please
read the “SET UP” notes. These contain important
information about the correct operation and safety.
Should you be uncertain about anything please
contact your dealer or one of our team.
Valve amplifiers do need a little more attention than
their solid-state counterparts, but the sonic results
are well worth it. In this manual we have tried to
include everything that you need to know. Please let
us know if you find any errors or feel that we have
missed anything out.
The
MB 845i
are push-pull all triode power
amplifiers using the fabulous 845 high power triode
valves. These have very linear characteristics which
many people consider give the finest reproduction of
any valves. Similar to the 300B but with more power
and punch. These are in fixed-bias mode which
gives maximum power, cool running and low
distortion. You MUST occasionally check the bias
(at least twice a year). The driver and phase splitting
are also triode for best sound quality and low noise.
The MB 845is are sensitive enough to be used with
any pre-amplifier or passive in most situations. Their
simplicity coupled with point to point hand wiring
without the use of printed circuit boards results in an
open euphoric sound that is wonderfully detailed
and warm.
The
MB 845i
are the finest and most
ambitious amplifiers we have made to date. Their
performance when properly set up is amazing, so
take your time to read and do things according to
this manual.
IMPORTANT!
THIS MANUAL CONTAINS
ESSENTIAL HEALTH &
SAFETY INFORMATION FOR
YOU AND YOUR AMPLIFIER.
PLEASE READ & KEEP SAFE
AND REFER TO IF NECESSARY
