Helpful Hints; Technical Specifications - HK Audio PROJECTOR Bedienungsanleitung

PROJECTOR MANUAL

6. HELPFUL HINTS

1. Don't expose electronic circuitry to moisture! When you set the system
up outdoors, be sure to protect it against rain. Keep soft drinks, beer or
any other liquids well away from the cabinets to protect their electronic
components from short circuits.
2. To assure proper ventilation, make sure that cabinets are placed a
sufficient distance away from walls and aren't covered by curtains and
the like. This is crucial to prevent the power amps from overheating.
3. Ensure that the power amp ventilation screens always remain free of
dirt, debris and other obstructions, and that the fan can rotate freely.
Otherwise, the electronic components may overheat and the unit may
be damaged.
4. PROJECTOR delivers optimum sound, so you should provide it with
optimum input signals! Noise such as humming is generally caused by
defective cables, incorrectly wired cables, or unbalanced signals routed
into the mixing console. Check all signal and mains cables, use DI boxes
to balance unbalanced signals, and do everything you can to keep on-
stage noise to a minimum.
5. Prevent distortion! Not only is it unpleasant to the ears of your
audience, it can also endanger your equipment. Make sure that all
components connected (both directly and indirectly) to the PROJECTOR
system have sufficient power ratings and that they cannot distort
because they're running at their respective limits. Provide an
undistorted signal to the system that doesn't have to be cleaned up by
backing off the GAIN knob.
6. Avoid ground loops! In spite of a balanced signal circuit, redundant
ground circuits in a single audio system may generate undesirable
humming. For example, you may encounter a ground loop when the
mixer is grounded via a mains cord which isn't connected to the same
mains circuit as the PROJECTOR system. To prevent this problem,
always be sure to connect the cabinets (or more accurately, their power
amps) and the mixing console to the same electrical circuit (same
phase!). If your equipment hums despite this precaution, the
Ground Lift switch can be of help.
CAUTION: Never use electrician's tape or anything similar
to cover the ground contact of the plug? this endangers
lives!

7. TECHNICAL SPECIFICATIONS

MID-HIGH UNIT
Inputs / Outputs:
Line In: XLR female (1= ground; 2= +, 3= -)
Type of input: electronically balanced & floating
Input impedance: 47 kOhms
Sensitivity: 6 dB (when set to the far right position)
Max input level: +24 dB
Parallel Out: XLR male (1= Ground; 2=+, 3= -)
Speakers: 1x 12" B&C speaker, 1x 2" B&C driver,
both in 60°x40° concentric horns
Total nominal impedance: 8 Ohms (passive)
Power output: 2x 300 watts (active)
Sound pressure level 1W/1m: 104 dB (full space), 110 db (half space)
Max. sound pressure level 119 dB @ 3% THD (200Hz – 5kHz average,
/ 1m: full space)
125 dB @ 10% THD (200Hz – 5kHz average,
full space)
Directivity: horizontal: ± 30°; 2 kHz – 20 kHz
vertical: ± 20°; 3 kHz – 20 kHz
Frequency response: 120 Hz – 19 kHz, ± 3dB
Crossover frequencies: 980 Hz; 24 dB / octave
Low cut 120 Hz, 24 dB
Protection circuit: active limiter
Weight: 65 kg / 132 lbs.
Dimensions incl. casters : 51 cm x 69 cm x 80 cm /
(WxHxD) 20.1" x 27.2" x 31.5"
SUB 1 / SUB 2
Inputs / Outputs:
Line In: XLR female (1= ground; 2= +, 3= -)
Type of input: electronically balanced & floating
Input impedance: 47 kOhms
Sensitivity: 6 dB (when set to the far right position)
Max input level: +24 dB
Parallel out: XLR male (1= ground; 2=+, 3= -)
Speakers: 1x 18" B&C woofer
Total nominal impedance: 8 Ohms (passive)
Power output: 600 watts (active)
Sound pressure level 1W/1m: 101 dB (full space), 110 db (half space)
Max. sound pressure level 119 dB @ 3% THD (200 Hz – 5 kHz average,
/ 1m: full space)
125 dB @ 10% THD (200 Hz – 5 kHz
average, full space)
Frequency response: 40 Hz – 160 Hz
Crossover frequencies: 120 Hz; 24 dB / octave
Low cut 43 Hz, 12 dB
Protection circuit: active limiter
Weight: 58 kg / 129 lbs.
Dimensions incl. casters: 51 cm x 69 cm x 80 cm /
(WxHxD) 20.1" x 27.2" x 31.5"
General electrical data:
Protection class 1 (protectively earthed)
Max. current consumption:
Max. power consumption:
Mains voltage range:
Ambient temperature range:
Internal fuses:
3 A (230 V)
6 A (117 V)
8 A (100 V)
950 VA
+/- 10%
-10° C to +60° C (+14 F° to 140°F)
2 x slow-blow 4 A for preamp and
power amp operating voltage
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