QSC K8 Service Manual

7
TD-000487-00
K Series Service Manual
2. Product specification and images
1
For comparison purposes and in accordance with common industry practice, maximum peak SPL specifications are theoretical calculations based upon transducer sensitivity and peak available amplifier power.
2
Independent of limiters and driver protection circuits.
Specifications subject to change without notice.
K Series
Specifications
K8 K10 K12 KSub
Configuration Trapezoidal 2-way Multipurpose 2-way Multipurpose 2-way 4th Order Bandpass
Transducers
Low-frequency
High-frequency
8" cone transducer
1.75" diaphragm compression driver
10" cone transducer
1.75" diaphragm compression driver
12" cone transducer
1.75" diaphragm compression driver
2 x 12" cone transducers
Frequency Response (-6 dB) 66 Hz – 18 kHz 60 Hz – 18 kHz 52 Hz – 18 kHz 48 Hz – 134 Hz
Frequency Range (-10 dB) 61 Hz – 20 kHz 56 Hz – 20 kHz 48 Hz – 20 kHz 44 Hz – 148 Hz
Nominal Coverage (-6 dB) 105° conical 90° conical 75° conical
Maximum SPL
1
127 dB peak 129 dB peak 131 dB peak 130 dB peak
Amplifiers
Power Output
2
1000 W continuous Class D (500 W LF, 500 W HF), 2000 W peak 1000 W continuous Class D
(2 x 500 W), 2000 W peak
Input Impedance (Ω) XLR / ¼": 40k balanced / 20k unbalanced • XLR / ¼" MIC mode: 2260 balanced • RCA: 10k
Controls Power • Gain A • Gain B • Mic/Line • LF Mode (Ext Sub/Norm/DEEP™) • HF Mode (Flat/Vocal Boost)
Front LED (On/Off/Limit)
Power • Gain • LF Mode (Normal/
DEEP™) • Polarity (Normal/Reverse)
• Front LED (On/Off/Limit)
Indicators Power • Signal A • Signal B • Standby • Limit • Mic Power • Signal • Standby • Limit
Connectors Balanced female XLR / ¼" line/mic level input • Balanced female XLR / ¼" line level input • Dual Balanced male XLR
full range line level out • Balanced male XLR “mix” out • Stereo RCA line level input • Remote gain control • Locking
IEC power connector
Dual balanced female XLR / ¼" line
level input • Dual Balanced male
XLR full range line level out •
Remote gain control • Locking IEC
power connector
Cooling On demand, 50 mm variable speed fan
Amplifier Protection Thermal limiting • Output overcurrent • Overtemperature muting • GuardRail™
Transducer Protection Thermal limiting • Excursion limiting
AC Power Input Universal power supply 100 – 240 VAC,
50 – 60 Hz
AC Power Consumption
1/8 Power
100 VAC, 2.3 A • 120 VAC, 2.01 A • 230 VAC, 1.13 A
Enclosure Impact resistant ABS Painted birch plywood
Finish Black Paint Black textured paint
Grille Black powder coated 18 gauge steel
Dimensions (HWD) 17.7" x 11" x 10.6"
450 mm x 280 mm x 269 mm
20.4" x 12.6" x 11.8"
519 mm x 320 mm x 300 mm
23.7" x 14" x 14"
603 mm x 356 mm x 356 mm
26" x 14" x 28.1" (including casters)
665 mm x 356 mm x 714 mm
Weight (Net) 27 lb (12.2 kg) 32 lb (14.5 kg) 41 lb (18.6 kg) 74 lb (33.6 kg)
Available Accessories K8 TOTE • K8 YOKE •
K SERIES M10 KIT
K10 TOTE • K10 YOKE •
K SERIES M10 KIT
K12 TOTE • K12 YOKE •
K SERIES M10 KIT
KSub COVER

QSC K8 Specifications

General

Product color	Black
LED indicators	Power, Signal strength, Stand-by
Housing material	Steel
Recommended usage	DJ
Suitable for outdoor use	-
Woofer	Yes
Speaker type	2-way
Number of drivers	1
Speaker placement	Floor
Audio output channels	1.0 channels
Woofer diameter (imperial)	8 \
Subwoofer driver diameter (imperial)	1.75 \
Impedance	40 Ω
Sensitivity	127 dB
Frequency range	61 - 20000 Hz
RMS rated power	1000 W
Peak Music Power Output (PMPO)	2000 W
Connectivity technology	Wired
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	50 - 60 Hz

Weight and Dimensions

Depth	269 mm
Width	280 mm
Height	450 mm
Weight	12200 g