![background image](http://html1.mh-extra.com/html/mackie/srm550/srm550_owners-manual_686889021.webp)
Owner’
s Manual
21
Owner’s Manual
Acoustic Performance:
Frequency Response (–3 dB)
55 Hz–17 kHz [SRM550]
50
Hz–17
kHz
[SRM650]
42
Hz–20
kHz
[SRM750]
Frequency Response (–10 dB)
49 Hz–20 kHz [SRM550]
39 Hz–20 kHz [SRM650]
37 Hz–20 kHz [SRM750]
Max peak SPL
132 dB [SRM550]
133
dB
[SRM650]
135
dB
[SRM750]
Crossover Point
3 kHz
Dispersion [H x V]
90˚ x 50˚
High-Frequency Section
Voice Coil Diameter
1.0 in / 25 mm
Horn Entry Diameter
1.4 in / 36 mm
Diaphragm Material
Titanium
Magnet
Material
Ferrite
Low-Frequency Section
Woofer Diameter
12 in/305 mm [SRM550]
15 in/381 mm [SRM650]
2x 15 in/381 mm [SRM750]
Voice Coil Diameter
2.6 in/66 mm [SRM550]
3.0
in/76
mm
[SRM650]
2.5
in/64
mm
[SRM750]
Diaphragm Material
Paper
Magnet
Material
Ferrite
Power Amplifiers
System Power Amplification
Rated Power
800 watts rms
1600
watts
peak
Low Frequency Power Amplifier
Rated Power
400 watts rms
800
watts
peak
Rated THD
< 1%
Cooling
Convection
Design
Class
D
High Frequency Power Amplifier
Rated Power
400 watts rms
800
watts
peak
Rated THD
< 1%
Cooling
Convection
Design
Class
D
Input/Output
Channel 1
Mic-Line
8
k balanced
1/4" TRS, Wide-Z
™
1 M unbalanced
Channel 2
Mic-Line
8
k balanced
1/4" TRS, Wide-Z
™
1 M unbalanced
RCA
25
k unbalanced
Thru
Male XLR balanced
[Passive when the Ch 1 / Mix switch
is in the “out” (Ch 1) position]
[Active when the Ch 1 / Mix switch
is in the “in” (Mix) position]
Line Input Power
US detachable line cord
100 – 120 VAC, 50 – 60 Hz, 200W
EU detachable line cord
200 – 240 VAC, 50 – 60 Hz, 200W
AC Connector
3-pin IEC 250 VAC
Power Supply Type
Switchmode
Safety Features
Input Protection
Peak and RMS limiting,
power supply and amplifier
thermal
protection
Display LEDs
Defeatable front power ON
(Running Man logo), Front load
power limiter, Speaker Mode,
Feedback Destroyer, input signal
Construction Features
Cabinet
15 mm Poplar
Finish
High durability black paint
Handles
One on each side
Grille
Powder-coated 18 gauge steel
Fly Points
3x M10 x 1.5 x 37 mm [SRM550 / SRM650]
10x M10 x 1.5 x 37 mm [SRM750]
Monitor Angle
60˚ [SRM550 / SRM650]
SRM Loudspeaker Specifications
Appendix C: Technical Information