User manual CREST AUDIO LQ10 LOUDSPEAKER SPECIFICATIONS
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Manual abstract: user guide CREST AUDIO LQ10 LOUDSPEAKERSPECIFICATIONS
Detailed instructions for use are in the User's Guide.
[. . . ] Specifications
frequency response usable low frequency limit (-10 dB point) power handling sound pressure level LQ10 Loudspeaker 74 Hz to 18 kHz ±3 dB 57 Hz Full Range 250 W continuous Full Range
LQ 10 Loudspeaker
TM
LQ 10 Loudspeaker
TM
SERIES
500 W program
96. 0 dB SPL, (2. 83 V input)
Power Handling
Full Range
Continuous
Peak
maximum sound pressure level (1 meter) radiation angle measured transducer complement box tuning frequency crossover frequency (internal passive)
Full Range
120. 0 dB SPL continuous 126. 0 dB SPL peak
LQ10
Other LQ series loudspeakers
250W
500W 500W
1, 000W
2, 000W 2, 000W
90 degrees horizontal x 40 degrees vertical Low Freq High Freq Fbox 75 Hz Low Freq 1x 10" woofer, vented long throw heavy-duty woofer 1x 1" exit/34 mm voice coil compression driver HFTM 1 on a CD horn 2, 200 Hz
LQ12 LQ15
time offset impedance (Z) input connections
Low Freq High Freq Full Range
0. 00 ms Horn spatially aligned Nominal 8. 0 Minimum - 6. 7
Features
· Quadratic Throat Geometry horn · 500 W program, 1000 W peak
Description
The Crest LQ 10 is an injection-molded two-way speaker system, engineered in the Crest tradition to provide superior performance from a compact and durable package. [. . . ] Utilizing Quadratic Throat HornTM technology, under US Patent 6, 059, 069, the horn has lower distortion than many popular CD horn geometries. Input connection to the system is made via two 4-pin Neutrik® jacks connected in parallel for full-range signal input and daisy chaining capability The internal passive crossover features the DPSTM (Dynamic Protection System) tweeter protection circuit, an advanced topology crossover with high performance components, to provide high power handling and reliability. The crossover provides driver roll-off and protection, as well as driver EQ for the woofer and horn. High-quality, reliable crossover components include polypropylene capacitors, and high current inductors and input connectors. The optimal integration of the crossover with the selected drivers results in a smooth frequency response from 74 Hz to 18 kHz.
2x Neutrik® Speakon® for full-range inputs
enclosure materials and finish mounting provisions dimensions (H x W x D)
Dark gray high impact polypropylene 1/4" thick finished in textured molded surface (8) 1/4" threaded mounting points, four each top and bottom
· 10" long throw heavy-duty woofer · Crest HFTM1 one and a quarter inch titanium compression driver
front rear 31 lbs.
18. 75" x 14. 00" x 13. 19" 16. 69" x 8. 00" x 13. 19" (14. 1 kg)
476 mm x 356 mm x 335 mm 424 mm x 203 mm x 335 mm
· DPS (Dynamic Protection System) tweeter protection · High power crossover components · Top and bottom flying point inserts · Multiple handles and 1-3/8" stand mount
net weight
Architects' & Engineers' Specifications: The loudspeaker system shall have an operating bandwidth of 74 Hz to 18 kHz. The nominal output level shall be 96. 0 dB when measured at a distance of one meter with an input of one Watt. The nominal impedance shall be 8. 0 Ohms. The maximum continuous power handling shall be 250 Watts, maximum program power of 500 Watts and a peak power input of at least 1, 000 Watts, with a minimum amplifier headroom of 3 dB. The nominal radiation geometry shall be 90 degrees in the horizontal plane and 40 degrees in the vertical plane. The outside dimensions shall be 18. 75 inches high by 14. 00 inches wide by 13. 19 inches deep. The weight shall be 31 pounds. The loudspeaker system shall be a Crest model LQ 10.
· Available in white
Crest Audio reserves the right to make improvements in manufacturing or design which may affect specifications.
8/21/01 v. 1. 5
*80304799*
Crest Audio Inc. Fair Lawn, NJ 07410 USA TEL: 201. 909. 8700 FAX: 201. 909. 8744 www. crestaudio. com
Specifications
Power Handling
LQ 10 Loudspeaker
A m plt iudeRes pons ( 1m O n- xi ) e 1W As
110
TM
Specifications
Horizontal Polars
0 30
o o
LQ 10 Loudspeaker
TM
There are many different approaches to power handling ratings. Crest rates this loudspeaker system's power handling using a full-range form of the AES Standard 2-1984. Using audio band 20 Hz to 20 kHz pink noise with peaks of four times the RMS level, this strenuous test signal assures the user that every portion of this system can withstand today's high technology music. This rating is contingent upon having a minimum of 3 dB of amplifier headroom available.
0 30
o
o
0 30
o
o
0 30
o
o
30
o
30
o
30
o
30
o
dB SPL ( e20 Pa) r
100
60
o
60
o
60
o
60
o
60
o
60
o
60
o
60
o
90
90
o
90
o
90
o
90
o
90
o
90
o
90
o
90
o
80 70 60 20
50
100
200
Fi e1 gur
Frequency Response
100
500 1k Fr equency ( z) H
2k
5k
10k
20k
125 Hertz
0 30
o o
250 Hertz
0 30
o o
500 Hertz
0 30
o o
1000 Hertz
0 30
o o
I pedance m
50 30 20
90 60
o
30
o
30
o
30
o
30
o
This measurement is useful in determining how accurately a given unit reproduces an input signal. The frequency response of the Crest LQ 10 is measured at a distance of 1-meter using a 1-Watt (into the nominal impedance) swept-sine input signal. [. . . ] The blending of the components of the Crest LQ 10 exhibit a desirable beamwidth and directivity (figure 3 and 4) suitable for sound reinforcement applications.
90 60
o
o
90 60
o
o
90 60
o
o
60
o
30
o
30
o
30
o
30
o
0
o
0
o
0
o
0
o
30
o
30
o
30
o
30
o
60 90
o
o
60 90
o
o
60 90
o
o
60 90
o
o
Fi e3 gur
100
Q & D iectviy I r i t ndex
20
125 Hertz
90
o
250 Hertz
90 60
o o
500 Hertz
90 60
o o
1000 Hertz
90 60
o o
60
o
30
o
30
o
30
o
30
o
Q
10 10
Di
0
o
0
o
0
o
0
o
30
o
30
o
30
o
30
o
60
o
60 90
o
o
60 90
o
o
60 90
o
o
1 20
50
100
200
Fi e4 gur
500 1k Fr equency ( z) H
2k
5k
10k
0 20k
90
o
2000 Hertz
4000 Hertz
8000 Hertz
16000 Hertz [. . . ]
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