Marshall Amplification DBS 7400 Stereo Amplifier User Manual


 
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WARNING!
PLEASE READ THE FOLLOWING LIST CAREFULLY.
A. ALWAYS fit a good quality mains plug conforming to the latest B.S.I. standards
(UK only).
B. ALWAYS wire the plug in accordance with the colour code attached to the mains lead (UK
only).
C. DO NOT attempt to remove the amplifier chassis. There are no user serviceable parts
inside.
D. ALWAYS have this equipment serviced or repaired by competent, qualified personnel.
E. NEVER under any circumstances, operate the amplifier without an earth.
F. NEVER use any amplifier in damp or wet conditions.
G. ALWAYS ensure that the impedance of the speaker or speakers connected does not fall
below the amplifiers minimum impedance rating.
H. NEVER obstruct the ventilation grills.
I. ALWAYS use Marshall D.B.S speaker leads.
J. PLEASE READ this instruction manual carefully before switching on.
Constant exposure to the high sound pressure levels of which this amplification system
is capable could result in permanent damage to your hearing.
Although individuals will vary in their susceptibility to noise induced hearing loss,
almost everyone will have their hearing impaired if exposed to intense sound levels
for a sufficient length of time.
To prevent the occurance of permanent hearing loss, it is advisable to wear ear plugs or protectors if you
are going to be exposed to high noise levels for prolonged periods.
INTRODUCTION
The Marshall Dynamic Bass System was carefully designed using innovative new circuitry to provide you
with a combination of superb sensitivity and excellent control plus incredible levels of dynamic power to
project and respond to the full range of contemporary bass sounds.
Superb sensitivity comes from the fully blendable mixture of a valve or solid state input pre-amp. The
solid-state section offers fast, percussive attack, as favoured by many modern players, whilst the single
ECC83 valve provides the smooth warmth and more compressed classic tone exclusive only to valve
technology.
Excellent control is derived from comprehensive EQ and compression facilities including primary EQ,
where Low and Hi rotary tone controls combine with deep and bright switches to give amazing depth and
clarity to your basic sound. More precise tone shaping or the ability to set up a completely contrasting
sound, is available from the switchable 9 band graphic EQ, which has been tailored to cut and boost those
frequencies that are fundamental to dynamic bass performance. The built in compressor provides further
control and features industry standard technology for smooth operation and the highest performance
quality.
Knowing how important headroom and clean power are to accurate, powerful bass reproduction led our
designers to engineer a system with headroom that goes far beyond the normal limits. Whereas a
conventional bass amplifier has an RMS to peak power ratio of 1:2, the Marshall Dynamic Bass System
dramatically increases this ratio to 1:10, giving you five times more headroom than an ordinary bass
amplifier.
The result is a no compromise bass system with an RMS rating of 400 watts capable of delivering peaks
of 4000 watts. This ensures that the system has the energy to respond accurately to even the widest
dynamic range.
In sound terms this extended headroom provides incredible clarity and punch to give you the most
responsive, rewarding bass amplification system that you've ever played through.
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