User Manual

Allen & Heath 18 ZED-10 User Guide
Hi Z
- 10 10
20
40
60
40
0
GM
Mic
GTR 1
Hi
G
T
HPF
GAIN
G
MONO INPUT CHANNEL 3 & 4
Hi Z input
The only difference between mono inputs 1-2 and 3-4 is
the Hi Z inputs for guitars or other instruments.
Standard 1/4” (6.25mm) Jack socket for unbalanced line
level signals or instrument pickups. Wired Tip=Hot(+),
Ring=cold (-), Sleeve=Chassis.
The Hi Z input connects to the XLR input through a cir-
cuit, so be aware that the two signals will add together if
both inputs are plugged in simultaneously.
The Hi Z input can be used with normal line level signals
but is designed specifically to match signals from instrument
pickups. The input impedance is extremely high (10Mohms)
and a FET (Field Effect Transistor) running in Class A mode
emulates the type of circuits used in valve guitar combos or
head amplifiers. The input circuit has soft asymmetric over-
drive characteristics, giving a warm 2nd harmonic character
to the sound if required.
Gain Boost
A recessed switch on the rear panel allows the HI Z input to be boosted by 26dB, useful
for instruments with weak pickups or where more overdrive is required. When the XLR
is being used or for normal line level signals (like keyboards)—make sure the switch is in
the OUT position.
0.00 ms 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 1.99
-4.35
-2.18
0.00
2.18
4.35
V
0.00 ms 0.20 0.40 0.60 0. 80 1.00 1.20 1.40 1.60 1.80 1.99
-4.35
-2.18
0.00
2.18
4.35
V
Hi Z Input GAIN BOOST OUT Hi Z Input GAIN BOOST IN
AC MAINS IN ~
100 - 240V~ 47-63Hz 15W
ALLEN&HEATH
OFF
0
I
ON
Serial No.
ENGINEERED IN ENGLAND BY ALLEN & HEATH LIMITED. MADE IN CHINA
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
DO NOT OPEN
CAUTION
RISK OF ELECTRIC SHOCK
AVIS: RISQUE DE CH OC ELECT RIQUE - N E PAS OUVRI R.
WARNING: THIS APPARATUS MUST BE EARTHED
(2) this device must accept any interference received,
This device complies with Part 15 of the FCC Rules.
(1) this device may not caus e harmful interference , and
Operation is subject to the following two conditions:
including interference that may cause und esired operation.
Laite on liite ttävä suoja maadoituskoskettimilla varustettuun pistorasiaan
Apparatet må tilkoples jordet stikkontakt
Apparaten skall anslutas till jordat uttag
CET APPAREIL DOIT ETRE MIS A LA TERRE
Guitar input gain switches
Unity gain
High gain (+26 dB)
Main Output Level
0dBu
-30dBu