YORKVILLE AM50 Manuel De L'utilisateur page 3

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1
INPUT
active
passive
pickup
5 pickup
4 3 3 3
3 6 6 6
2 9 9 9
1 9 12 12 12
0 10 15 15 15
GAIN LOW
CLIP
CAUTION: REPLACE WITH
SAME TYPE FUSE AND RATING
ATTENTION: UTILISER UN FUSIBLE
DE RECHANGE DE MEME
TYPE ET CALIBRE
FUSE
T 400mA
The Acoustic Master
Your Yorkville AM50 acoustic guitar amplifier was designed to reproduce sound from an acous-
tic guitar as realistically as possible. The compact size and light weight of the AM50 makes it
easy to carry and use anywhere. The amplifier accepts the output from the active or passive
pickups of your acoustic guitar, a microphone, or even Line-Level inputs. Other features include a
spring reverb with level control, a balanced Line out and a Sweepable Notch Filter. The versatility
and response of the AM50 will make it a pleasure to play for years to come.
The Yorkville AM50 has 2 input channels. Both channels can be use simultaneously.
For example an acoustic guitar can be used on channel 1 while a microphone, a keyboard,
or even another acoustic guitar (using an active pick-up) can be in use on channel 2.
Power
The green LED located under the power switch will illuminate when the unit is turned on.
Channel 1
The input to channel 1 is unbalanced with an input impedance of 1M-Ohm. It can accept
either passive or active pick-ups (piezo/coil) Controls include Volume, Low and High
Equalization, as well as a Sweepable Notch Filter. The filter eliminates most feedback gener-
ated by guitar and/or amplifier, and also can be used to help shape the amplifier's response
to the individual's taste. The Notch Filter can be switched on/off. The clip LED can be used to
gauge input level to avoid audible clipping.
Tone Controls
The Channel 1 Tone Controls help you access the wide range of versatile sonic possibili-
ties of the AM50 (these controls DO NOT affect Channel 2). Rotate the LOW Control to
affect the Low Frequency information (the bass). Rotate the HIGH Control to affect the High
Frequency information (the treble).
Notch Filter Control
The Sweepable Notch Filter control is located in the channel 1 block and is used to elimi-
nate feedback that is caused by the guitar being too close to the amp at higher power. When
feedback does occur make sure that the notch filter switch is pushed in, rotate the notch con-
trol slowly until the feedback is eliminated. Please note, if feedback noise occurs when you
are in close proximity to the guitar amp, the notch filter may not help, therefore either reduce
power or move the guitar further away from amplifier.
2
INPUT
150
3
120 625
6
NOTCH
9
12
15
80 800
Hz
HIGH
FREQ
230V 120VAC
50Hz 60Hz
0.5A 1.0A
LR 21877
Yorkville
DESIGNED & MANUFACTURED BY
YORKVILLE SOUND • Toronto, CANADA
5 5
6
4 6 4
3 7 3
2
2 8
1 9 1
0 10 0 10
GAIN REVERB
CLIP
A C O U STI C MASTE R ACOUSTIC MASTER
A C O U STI C MASTE R
7
8
9
LINE OUT POWER
1