JBL LSR6328P - Manual (Page 3)

Notes:
All measurements unless otherwise stated made anechoically in a 4 ␲ environment at 2
meters, referenced to 1 meter by inverse square law.
The reference measurement microphone position is located perpendicular to the cen-
terline of the low and high frequency transducers at the point 55 mm (2.2 in) below
the center of the high frequency diaphragm.
Acoustic loading provided by the listening room increases maximum SPL capability
and low frequency bass extension as compared to stated anechoic values.
Distortion measurements performed with the input voltage necessary to produce the
stated A- weighted SPL at the stated measurement distance. Distortion figures refer to
the maximum distortion measured in any 1/10th octave wide band in the stated fre-
quency range.
JBL continually engages in research related to performance improvements. New mate-
rials, production methods, and design refinements are introduced into existing prod-
ucts without notice as a routine expression of that philosophy. For this reason, any
current JBL product may differ in some respect from its published description, but will
always equal or exceed the original design specification unless otherwise stated.
Specifications:
System:
Frequency Response (+1, -1.5 dB): 50 Hz - 20 kHz
Enclosure Resonance Frequency: 38 Hz
Low Frequency Extension: User controls set to default
-3 dB: 46 Hz
-10 dB: 36 Hz
Low-High Frequency Crossover: 1.7 kHz 6th-order acoustic Linkwitz-Riley
Distortion, 96 dB SPL, 1 m:
Mid-High Frequency (120 Hz - 20 kHz):
2nd Harmonic: <0.6%
3rd Harmonic: <0.5%
Low Frequency (<120 Hz):
2nd Harmonic: <2%
3rd Harmonic: <1%
Maximum SPL (80 Hz - 20 kHz): >108 dB SPL / 1m
Maximum Peak SPL (80 Hz - 20 kHz): >111 dB SPL / 1m
Signal Input: Neutrik “Combi” XLR- ¼-in tip-ring-sleeve balanced or unbal-
anced positive voltage applied to XLR pin 2 ( ¼" tip) produces
outward woofer motion
Calibrated Input Sensitivity, XLR & ¼":
+4 dBu / +8 dBu: 96 dB SPL / 1 m
-10 dBV: 96 dB SPL / 1 m
AC Input Voltage: 100 /240 VAC, 50/60 Hz (auto sensing)
AC Input Connector: IEC
Long-Term Maximum System Power: 220 watts (IEC265-8)
Self-Generated Noise Level: <10 dBA / 1 m Tonal-artifact-free noise floor
User Controls:
High Frequency Control (2 kHz - 20 kHz): +1 dB, 0 dB, -1 dB
Low Frequency Control (< 100 Hz): 0 dB, -2 dB
Low Frequency Alignments: 36 dB/octave, 24 dB/octave (VLF protection off)
Calibrated Input Sensitivity: -10 dBV, +4 dBu, +8 dBu
Boundary Compensation Settings: 0, -1.5, -3.0, -4.5 dB
Variable Input Attenuation: 0 dB to -13 dB
RMC External Bypass: ¼" jack
RMC Active Switch: In/Out
RMC Frequency Adjust: 26 Hz - 96 Hz (10th octave, 18 centers)
RMC Depth Adjust: 0 - 14 dB (cut only)
RMC Q Adjust: 1/20th to 1/2 octave, 21 steps
Transducers:
Low Frequency Model: 218F
Diameter: 203 mm (8 in)
Voice Coil: 38 mm (1.5 in) Differential Drive ® with dynamic braking coil
Magnet Type: Ferrite, with integral heat sink
Cone Type: Carbon fiber composite
Impedance: 2 ohms
High Frequency Model: 053TiS
Diameter: 25 mm (1 in) diaphragm
Voice Coil: 25 mm (1 in)
Magnet Type: Ferrite, shielded
Diaphragm Type: Damped titanium composite
Other Features: Elliptical oblate spheroidal waveguide
Impedance: 4 ohms
Amplifier:
Low Frequency:
Topology: Class A-B, all discrete
Sine Wave Power Rating: 250 watts (<0.1% THD into rated impedance)
THD + N, ½ Power: <0.05%
High Frequency:
Topology: Class A-B, monolithic
Sine Wave Power Rating: 120 watts (<0.1% THD into rated impedance)
THD + N, ½ Power: <0.05%
Physical:
Finish: Smooth dark graphite
Handles: 2 each, flush mounted on sides
Mounting: 4 threaded mounting points conforming to industry standard
square pattern, 127 x 70 mm (5 x 2.75 in) center to center. M6
metric threads.
Enclosure Volume (net): 28 liter (1 cu ft)
Low Frequency Vent: Rear ported linear dynamics aperture (integrated with
amplifier heat sink)
Baffle Construction: Injection-molded structural ABS
Enclosure Construction: 19 mm ( ¼ in) MDF
Net Weight: 17.7 kg (39 lb)
Dimensions (HxWxD): 406 x 330 x 325 mm (16 x 13 x 12.8 in)
Caution: Unsafe mounting or overhead suspension of any heavy load can result in serious injury and equipment
damage. Mounting of speakers should be done by qualified persons in accordance with all applicable local safety
and construction standards. Be certain to follow the instructions provided by the manufacturer of the mounting
bracket. Before selecting a mounting bracket, be certain that it is capable of supporting the weight of the speaker
to be mounted.
96 dB/1 m (Distortion raised 20 dB)
102 dB/1 m (Distortion raised 20 dB)
Amplitude & Phase
2nd
3rd
2nd
3rd