ALLEN & HEATH
Section C - 2
L4DSM2
Attention Service Departments
TECHNICAL BULLETIN
Ref.: AHTB96010 Issue No 1 Date 16/01/97 Page 1of: 1
Title: New fader specified for GL4000 Authorisation: CD
The following information applies to all GL4000 consoles after serial number 401300.
Origin of the change:
In accordance with Allen & Heath’s policy of continual product development, a new fader has been specified for
GL4000 consoles. The fader offers a custom taper that has been designed to match the needs of engineers using
the consoles in today’s live environment.
Details:
GL4000’s with serial numbers which precede the cut-off number stated above have been fitted with Jung Poon
faders. The order codes for these are:
AI2665 - Mono Fader
AI2664 - Stereo Fader
GL4000’s from Serial No 401300 onwards will be fitted with the Alps K-fader which has a special taper. The
numbers for these are as follows:
AI8109 - Mono Fader
AI8110 - Stereo Fader
Note that since the tapers of the two faders are different, it will be necessary to check that the correct fader is
ordered whenever replacements are needed. Otherwise, the channel gain will not correspond to the fader panel
silk-screen.
Please note however that the audio performance of the console will not be compromised by inadvertently fitting the
‘wrong’ fader type. The channel will perform equally well with either fader type.
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