Introduction

The multi-purpose Yorkville 50KB/KW mixer/amp has been designed to produce the most
performance possible in a compact combo format. The Yorkville 50KB/KW is appropriate
to use with just about anything that produces an audio signal. This includes such items as
professional or home keyboards, acoustic guitars (with pickups), microphones, or other
audio sources such as CD-players or even cassette decks. No matter what, the Yorkville
50KB/KW will sound great and be dependable for years to come.

Inputs

The Yorkville 50KB/KW has two input channels, both input channels can be used simul-
taneously. As an example, you could use a microphone on Channel 1 and a stereo key-
board on Channel 2. You can balance the loudness of the two sources by adjusting each
individual channel’s volume control.

Channel 1

Channel 1 is optimized for microphones, however the phone jack can also accept line
level inputs from an acoustic guitar (with pickup), electronic keyboard, CD-player or
other audio sources. This channel offers more gain than Channel 2, it’s advised that the
source with the lower level output be connected to Channel 1. Adjust the volume con-
trol for the level of sound desired.
This channel’s 1/4-inch input is balanced (T.R.S. or Tip/Ring/Sleeve, +/-/gnd). The
phone jack can also use regular unbalanced cables. For best results, and reduced noise,
it is advised that you use balanced (stereo) cables for interconnection wherever possible.
• Do Not use both the phone and XLR inputs on Channel 2 at the same time.•
The signals will be attenuated!

Channel 2

Channel 2 - This channel is optimized for line level signals such as an electronic key-
board, CD-players, cassette decks, or other audio sources. The channel also sums stereo
signals properly for use with this single amplifier system. You can utilize this feature
either by using the two phone jacks or the two RCA jacks (both sets of jacks can be used
at the same time). Adjust the Channel 2 volume control for the level of sound desired.

Tone Controls

The LOW and HIGH controls allow a wide range of tonal adjustment. The tone controls
affect the sound output from both channels. Increase or decrease the LOW control to
affect low frequency information and the HIGH control for high frequency information.
Please note: Due to the great variance between possible signal sources, it may be possible to
distort the signal by adjusting the LOW or HIGH controls.

1

DESIGNED & MANUFACTURED BY
YORKVILLE SOUND • Toronto, CANADA
KB
Yorkville
230V
50Hz
0.2A
120VAC
60Hz
0.4A
EFX SEND EFX RTNLINE INPUTSLINE MIC CD / LINE PHONES POWER
15 15
12 12
9 9
6 6
3 3
HIGH
15 15
12 12
9 9
6 6
3 3
LOW
CHANNEL 1
0 10
1 9
2 8
3 7
4 6
5
0 10
1 9
2 8
3 7
4 6
5
CHANNEL 2KB
50KW faceplate is same as 50KB