Instrumentation Technology Systems 6152A User manual

OPERATION MANUAL
MODEL 6152A
SPEAKER LIGHT BOX
Revised
September 23, 2008
19360 Business Center Drive ●Northridge CA ●91324 ●[phone] ●FAX [phone]

i
MODEL 6152A
SPEAKER LIGHT BOX
TABLE OF CONTENTS
Paragraph Description Page
1.0 GENERAL ...................................................................................................................1
2.0 FUNCTIONS............................................................................................................... 2
2.1 STEREO SPEAKER SET .......................................................................................... 2
2.2 LIGHTING.................................................................................................................. 2
3.0 MECHANICAL CONFIGURATION.........................................................................3
4.0 CONTROLS, INDICATORS, AND CONNECTORS.............................................. 4
4.1 Power ON/OFF............................................................................................................ 4
4.2 Volume ........................................................................................................................ 4
4.3 Balance ........................................................................................................................ 4
4.4 Mix............................................................................................................................... 4
4.5 Lamp Intensity............................................................................................................. 4
4.6 Front Lamp ON/OFF................................................................................................... 4
4.7 Rear Lamp ON/OFF.................................................................................................... 4
4.8 RCA (Right and Left).................................................................................................. 4
4.9 XLR (Right and Left).................................................................................................. 4
4.10 Power........................................................................................................................... 4
5.0 SPECIFICATIONS......................................................................................................5
5.1 RCA Inputs...................................................................................................................5
5.2 XLR Inputs...................................................................................................................5
5.3 Volume Range..............................................................................................................5
5.4 Balance Range..............................................................................................................5
5.5 Mix Range ....................................................................................................................5
5.6 Audio Output................................................................................................................5
5.7 Lamps ...........................................................................................................................5
5.8 Package and Environment............................................................................................5
5.9 humidity........................................................................................................................5
5.10 Power Input...................................................................................................................5

1
MODEL 6152A
SPEAKER LIGHT BOX
1.0 GENERAL
The ITS Model 6152A Speaker Light Box is a dual function unit which provides a powered
speaker set with dual stereo inputs and a pair of high intensity halogen lights for work space
and maintenance illumination. The 6152A differs from the 6152 in that the lamp on the
front panel includes a three inch extension.
Also included is a mixer, which allows distribution of the signals from the two stereo inputs
to the audio amplifier.
The unit is housed on a 3.5 inch x 19-inch rack mountable enclosure and is powered by
115VAC line or alternatively 230VAC (6152A-1).

2
2.0 FUNCTIONS
2.1 STEREO SPEAKER SET
The unit contains a pair of front panel mounted oval speakers, one each for the left and right
channels; three front panel adjustment pots, one each for volume, balance, and mix; and
four rear panel input jacks, one each for right and left inputs for XLR and RCA,
respectively. The speakers are driven via the audio PCB 1412267, which also contains the
mixer and audio controls. The volume control adjusts the common gain voltage to both
channels. The balance control adjusts the relative levels of audio between the right and left
channels. The mix control adjusts the relative levels of audio between the RCA and the
XLR inputs. The RCA inputs are unbalanced and are typically supplied from a computer
with output levels of approximately 0dbm. The XLR inputs are balanced and are typically
supplied from a VCR, DTR or PA audio systems.
2.2 LIGHTING
The 6152A contains a pair of high intensity halogen lamps; one mounted on the front panel
and used for console illumination; the other mounted on the rear panel used for
maintenance. The front panel lamp can be swiveled to any direction, limited only by the
interference with other front panel controls, and the intensity is adjustable between zero and
20 watts output via a front panel adjustment pot. This lamp is typically used to illuminate
the console operator's work area. The rear panel lamp is a fixed intensity 20 watt lamp with
on/off button. This lamp has an integral clamp and coil cord, and is typically used by the
maintenance technician for working inside or behind the console rack.

3
3.0 MECHANICAL CONFIGURATION
The 6152A is housed in a 3.5 inch high x 19 inch wide x 8.5 inch deep rack mountable
sheet metal cabinet. Al circuitry is on two printed circuit assemblies.
All operator adjustments are located on the front panel. All connectors are mounted on the
rear panel.
FUSE
MODEL 6152
SPEAKER/LIGHT BOX
100-250VAC
FRONT PANEL
REAR PANEL
RIGHT
LAMP INTENSITY MIX
BALANCE
VOLUME
Model
Serial
Code
instrumentaton
technology
systems 6152
LEFT
RCA
XLR
Bracket to
recieve included
clamp-on Trouble
light
Cord outlet for
Trouble light

4
4.0 CONTROLS, INDICATORS, AND CONNECTORS
4.1 Power ON/OFF Rocker Switch -
Controls Line power input. Illuminated when power is ON.
4.2 Volume Rotary Potentiometer -
Adjusts the loudspeaker volume for both right and left audio
channels.
4.3 Balance Rotary Potentiometer -
Adjusts the volume ratio between the right and left audio
channels.
4.4 Mix Rotary Potentiometer -
Adjusts the volume ratio between the RCA and the XLR
inputs.
4.5 Lamp Intensity Rotary Potentiometer -
Adjusts the intensity of the front panel lamp.
4.6 Front Lamp ON/OFF Pushbutton switch -
Mounted on the rear of the front panel console lamp.
Alternately turns the lamp ON and OFF.
4.7 Rear Lamp ON/OFF Pushbutton switch -
Mounted on the rear of the rear panel maintenance lamp.
Alternately turns the lamp ON and OFF.
4.8 RCA (Right and Left) RCA Connectors -
Accept input for right and left channels from computer.
4.9 XLR (Right and Left) XLR Connectors -
Accept input for right and left channels from VCR or DTR.
4.10 Power 3 Pin Connector -
Receives detachable line cord.

5
5.0 SPECIFICATIONS
5.1 RCA Inputs Unbalanced inputs, 0dbm typical (1.8 volts rms max), 2K
ohm load.
5.2 XLR Inputs Balanced inputs. 0dbm typical (1.8 volts rms max), 620 ohm
load. Input on pins 2 and 3. Pin 1 chassis ground.
5.3 Volume Range 80db typical
5.4 Balance Range 40db typical
5.5 Mix Range 100db typical
5.6 Audio Output 3 watt output average rms per channel (5 watt peak rms).
5.7 Lamps 12V/20W Sunnex replacement part type 1220. Used for both
front and rear lamp assemblies. (Generic equivalent is
JC12V-20W/G4.)
5.8 Package and Environment
Size: Standard 19 inch rack, 3.5 inch panel, 8.5 inches deep.
Temperature: 0C to 50C ambient
5.9 Humidity: 85% non-condensing
5.10 Power Input 100-125VAC (6152A) or 195-245VAC (6152A-1), 50/60Hz,
8 watts typical with no lamps lit and no audio. Add 12 watts
for maximum audio. Add 27 watts (maximum intensity) for
front panel lamp. Add 20 watts for rear panel lamp.