Table of Contents
Advertisement
Quick Links
Owner's Manual
MIN
MAX
MIN
MAX
MIN
MAX
CHANNEL 1
CHANNEL 2
CHANNEL 3
MIN
MAX
MIN
MAX
MIN
MAX
CHANNEL 4
CHANNEL 5
CHANNEL 6
PR-120 / PR-240
+12dB
0dB
PR-240
-12dB
PUBLIC ADDRESS AMPLIFIER
MIN
MAX
CHIME
GRAPHIC EQUALIZER
125Hz
250Hz
500Hz
1kHz
2kHz
4kHz
8kHz
ALL
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
PROTECT
+3
+12dB
0
0dB
-4
-10
-12dB
-20
POWER
ON
OFF
Advertisement
Table of Contents
Related Manuals for Quest Engineering PR Series
Summary of Contents for Quest Engineering PR Series
- Page 1 Owner’s Manual GRAPHIC EQUALIZER PROTECT +12dB +12dB PR-240 -12dB -12dB PUBLIC ADDRESS AMPLIFIER POWER 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 CHANNEL 6 CHIME PR-120 / PR-240...
- Page 2 IMPORTANT SAFETY INSTRUCTIONS...
-
Page 3: Table Of Contents
Table of Contents PR-120 / PR-240 Table of Contents Introductions ..................2 Features ....................3 Front Panel Controls ................4 Rear Panel Contuols ................5 Setup ....................6 Wiring Guide ..................7 Connections ..................9 Operations ..................12 Applications ..................15 Block diagram ................ -
Page 4: Introductions
PR-120 / PR-240 Welcome Congratulation and thank you for the purchasing PR series, a multi-function commercial ampli- fier. These amplifiers are designed to provide a big impact in sound reproduction and to produce the best and highest quality audio at an affordable price. We wish you great enjoyment and sat- isfaction when using your amplifier, whether you are an installation, or reinforcement engineer. -
Page 5: Features
Features PR-120 / PR-240 Features The PR-120 and PR-240 are comprehensive, all-in-one mixer-amplifier solutions for commer- cial and industrial applications.These low-cost units provide all necessary features in a simple building-block format. * Six microphone or line inputs with 1/4-inch phone,XLR and RCA jacks. * Acceptable wide range input level. -
Page 6: Front Panel Controls
PR-120 / PR-240 Controls Front Panel controls GRAPHIC EQUALIZER PROTECT +12dB +12dB PR-240 -12dB -12dB PUBLIC ADDRESS AMPLIFIER POWER 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5... -
Page 7: Rear Panel Contuols
Controls PR-120 / PR-240 Rear Panel controls FM/AM ANTENNA CHANNEL 6 CHANNEL 5 CHANNEL 4 CHANNEL 3 CHANNEL 2 CHANNEL 1 CHIME MUSIC ON HOLD WARNING CAUTION DO NOT EXPOSE FOR CONTINUED -6/+14 -50/-30 -6/+14 -50/-30 VOLUME VOLUME GAIN GAIN GAIN GAIN GAIN... -
Page 8: Setup
PR-120 / PR-240 Setups Setup Installation: CAUTION: Before you begin, make sure your mixer-amplifier is disconnected from the power source, with the power switch in the “OFF” position and all level controls turned completely down (counterclockwise) You may stack mixer-amplifiers without using a cabinet or you may place a single mixer-amplifier on a surface with 12-inches (about 30cm) of air space around the unit for convection cooling. -
Page 9: Wiring Guide
PR-120 / PR-240 Setups Wiring guide Choose input wire and connectors Jam industry recommends using pre-built or professionally wired balanced line,22 to 24 gauge cables.Figure shows connector pin assignments for wiring .The RCA input connections can also be used for unbalanced inputs. BALANCED LINE BALANCED LINE SHIELD... - Page 10 PR-120 / PR-240 Setups Choose output wire and connectors For the amplifier output connectors,Jam industry recommends using pre-built or professionally wired, high-quality, and heavy gauge speaker wires.You may use EURO blocks for your output connectors.To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loud- speaker cable connectors.
-
Page 11: Connections
PR-120 / PR-240 Setups Connections INPUT: Connect microphones or balanced line-level sources to mixer-amplifier balanced inputs. Set Gain volume accordingly. Connect unbalanced line-level signals to RCA input connectors. OUTPUT: Maintain proper polarity on output connectors. For each output channel, connect the output EURO block terminals to the loudspeaker Ioads. Use terminals marked (GND) and for a 4-ohm loudspeaker load, or use terminals marked... - Page 12 PR-120 / PR-240 Setups Speaker connection is shown in Figure. OUTPUT OUTPUT Hi-Z Lo-Z Hi-Z Lo-Z 4Ω Matching transformer 8Ω 8Ω [ How to connect speakers ] CAUTION : Never use both the Low-Z(4 ohms)and Hi-Z(25V, 70V and 100V) terminals at the same time FM/AM ANTENNA CHANNEL 6...
- Page 13 PR-120 / PR-240 Setups Typical input and output wiring is shown in Figure. FM/AM ANTENNA CHANNEL 6 CHANNEL 5 CHANNEL 4 CHANNEL 3 CHANNEL 2 CHANNEL 1 CHIME MUSIC ON HOLD WARNING CAUTION -6/+14 -50/-30 -6/+14 -50/-30 DO NOT EXPOSE FOR CONTINUED VOLUME VOLUME...
-
Page 14: Operations
External equipments connection By connecting a signal processor such as an equalizer or limiter between the mixer section (PR E-AMP OUT) and the power amplifier section(AMP IN) of the PR series, signals can be tailored for desired sound output. NOTE Inserting a 1/4-inch phone plug into AMP IN terminal disconnects internal power amplifier section from the mixer section. - Page 15 PR-120 / PR-240 Operations Preannounce chime PR series mixer-amplifier supply user selectable 4 kinds of preannounce chime. The way of set up is same as follow figure . [ Chime selection ] Figure shows default set in factory. You can move the position of jumper on the T3 of main PCB for changing pre-announce chime.
- Page 16 [ Music on hold ] Signal input gain control PR series mixer-amplifier can accept variable and wide range input signal with trim pot. Adjusts the trim pot in a range of 44dB to accept variabe external equipments. Figure 3.6 shows detail input sensitivities.
-
Page 17: Applications
PR-120 / PR-240 Applications Applications E-MART OFFICE TELEPHONE OFFICE MUSIC ON HOLD RESTAURANT TELE-PAGER LADIES CLOTHING MUSIC SOURCE MAN CLOTHING CHANNEL 6 CHANNEL 5 CHANNEL 4 CHANNEL 3 CHANNEL 2 CHANNEL 1 MUSIC ON HOLD CHIME WARNING CAUTION DO NOT EXPOSE FOR CONTINUED -6/+14 -50/-30... -
Page 18: Block Diagram
PR-120 / PR-240 Block diagrams Block diagrams... -
Page 19: Specifications
PR-120 / PR-240 Specifications Specifications Performance PR-120 PR-240 Balanced Microphone Channels -50dB ± 3dB Balanced Line Channels -22dB ± 3dB Balanced Remote Microphone Station -50dB ± 3dB Input Sensitivity for full output at maximum gain Balanced Telephone Paging -21dB ± 3dB Unbalanced Link-In -17dB ±...