1
FRS SERIES AMPLIFIERS
FRS SERIES AMPLIFIERS
Appendix C: Technical Info
Topology
FRS•1300, FRS•1700: Class AB
FRS•2800: Class H
Cooling
Variable-speed fans with back-to-front airflow
Indicators
SIG (Signal Present) on each channel
OL (Overload) on each channel
Signal Meters –3 dB, –6 dB, –9 dB. –20 dB on each channel
Power LED on power switch
Current Consumption (measured at 0 VAC line voltage)
FRS•1300 FRS•1700 FRS•2800
Idle 0.4 A 0.5 A 0.6 A
Musical Program:
@ 8 ohms
4.0 A 5.3 A 8.4 A
@ 4 ohms
6.0 A 7.4 A 10.8 A
@ 2 ohms
8.2 A 11.4 A 18.3 A
AC Power Requirements
U.S. model: 100–120 VAC, 50–60 Hz
European model: 200–240 VAC, 50–60 Hz
Physical Dimensions and Weight
Height: 3.50 in/ 89 mm
Width: 19.00 in/ 483 mm
Depth: 14.65 in/ 372 mm
Depth with Handles: 16.15 in/ 410 mm
Weight:
FRS•1300: 21.0 lb./ 9.5 kg
FRS•1700: 21.5 lb./ 9.7 kg
FRS•2800: 22.0 lb./ 10.0 kg
Flavor: Slightly minty
LOUD Technologies Inc. is always boldly striving to improve
our products by incorporating new and improved materials, components, and manufacturing methods. Therefore, we
reserve the right to change these specifications at any time
without notice.
“Mackie,” and the “Running Man” are registered trademarks of
LOUD Technologies Inc. All other brand names mentioned are
trademarks or registered trademarks of their respective holders, and are hereby acknowledged.
©2007-2008 LOUD Technologies Inc. All Rights Reserved.
Specifications
Continuous Sine Wave Average Output Power, per channel,
both channels driven, 0 Hz to 0 kHz
FRS•1300 FRS•1700 FRS•2800
2 ohms: 650 W 830 W 1300 W
4 ohms: 420 W 540 W 850 W
8 ohms: 235 W 310 W 500 W
Bridged Mono Operation, 0 Hz to 0 kHz
FRS•1300 FRS•1700 FRS•2800
4 ohms: 1300 W 1660 W 2800 W
8 ohms: 840 W 1080 W 1700 W
Note: Power ratings are specified at 240 VAC line voltage.
Power Bandwidth
5 Hz to 50 kHz (+0, –3 dB)
Frequency Response
20 Hz to 25 kHz (+0, –1 dB)
Distortion
THD and SMPTE IMD; 20 Hz to 20 kHz
< 0.03 % @ 8 ohms
Signal-to-Noise Ratio
> 105 dB below rated power into 4 ohms
Channel Separation
> 68 dB @ 1 kHz
Damping Factor
> 300 @ 1 kHz and below, into 8 ohms
Input Impedance
20 kΩ balanced
10 kΩ unbalanced
Input Sensitivity
1.15 V (+3.4 dBu) for rated power into 4 ohms
Gain
FRS•1300: 32 dB
FRS•1700: 33 dB
FRS•2800: 35 dB
Maximum Input Level
9.75 Vrms (+22 dBu)
Turn On Delay
2.5 seconds
Subsonic Filter
– 9 dB @ 30 Hz
17
Owner’s Manual
Owner’s Manual
1+
1–
2–
2+
INPUT 1
BALANCED
LINE INPUT
(TRS)
INPUT 1
BALANCED
LINE INPUT
(XLR-F)
INPUT 2
BALANCED
LINE INPUT
(TRS)
FRS SERIES
BLOCK DIAGRAM
04.06.07
INPUT 2
BALANCED
LINE INPUT
(XLR-F)
STEREO
MONO
CHANNEL 2
LEVEL
CHANNEL 1
LEVEL
AMP
MODE
SWITCH
AMP
MODE
SWITCH
CLIP
LIMITER
BRIDGE
STEREO
MONO
BRIDGE
SUBSONIC
FILTER
ON
OFF
ON
OFF
ON
OFF
ON
HVDC+
POWER
AMP 1
POWER
AMP 2
PROTECTION
DC OFFSET
OVER TEMP
SHORT CIRCUIT
CURRENT LIMIT
AMPLIFIER
LVDC+
LVDC–
HVDC–
HVDC+
LVDC+
LVDC–
HVDC–
METER
DISPLAY
OFF
CHANNEL 1
SPEAKER
OUT
BRIDGED
SPEAKER
OUT
CHANNEL 2
SPEAKER
OUT
+
–
+
–
1+
1–
2–
2+
+
–
1+
1–
2–
2+
+
–
+
–
TEMP
SENSOR
(ON HEATSINK)
FAN
VARIABLE
SPEED
CONTROL
VDC+
POWER
SWITCH
SWITCHING POWER SUPPLY
HVDC+
LVDC+
LVDC–
HVDC–
VDC+
VDC–
120V/240V
JUMPER
SWITCHING
POWER
CONTROLLER
FAN FAN SPACEMAN
Block Diagram
18
FRS SERIES AMPLIFIERS
FRS SERIES AMPLIFIERS
FRS•1300
WEIGHT
21 lbs.
(9.5 kg)
FRS•1700
WEIGHT
21.5 lbs.
(9.7 kg)
FRS•2800
WEIGHT
22 lbs.
(10 kg)
19.0 in/ 483 mm
3.50 in/
88.9 mm
1.50 in/
38 mm
14.65 in/ 372 mm
13.46 in/ 342 mm
17.09 in/ 434 mm
14.65 in/ 372 mm
OL
-3
-6
-9
-20
SIG
OL
-3
-6
-9
-20
SIG
2
OO
MAXMAX
OO
1
FRS•2800
FAST RECOVERY POWER AMPLIFIER
1.50 in/
38 mm
Dimensions
Loading...