Lsr12P - JBL LSR Owner's Manual

LSR12P SPECIFICATIONS
Specifications:
System:
Frequency Response (-6 dB) : 28 Hz - 80 Hz
Low Frequency Extension: User controls set to default
-3 dB: 34 Hz
- 10 dB: 26 Hz
Enclosure resonance frequency: 28 Hz
Low - High Frequency Crossover: 80 Hz (4th order electroacoustic Linkwitz-Riley)
Distortion, 96 dB SPL / 1m:
Low Frequency (< 80 Hz):
2nd Harmonic: <2%
3rd Harmonic: <1%
Maximum Continuous SPL: >112 dB SPL / 1m(35 Hz - 80 Hz)
Maximum Peak SPL: >115 dB SPL / 1m (35 Hz - 80 Hz)
Calibrated Input Sensitivity:
XLR, +4 dBu: 96 dB/1m
XLR, -10 dBV: 96 dB/1m
Power Non-Linearity (20 Hz - 200 Hz):
30 watts < 0.4 dB
100 watts: < 1.0 dB
Power/Clip/Bypass Indications: Green LED - Normal Operation
Amplifier:
Low Frequency Topology: Class A-B, All Discrete
Sine Wave Power Rating: 260 Watts (<0.5% THD into rated impedance)
THD+N, 1/2 power: <0.05%
AC Input Voltage: 115/230VAC, 50/60 Hz (User Selectable)
AC Input Voltage Operating Range: +/- 15%
AC Input Connector: IEC
Self Generated Noise Level: <10 dBA SPL/1m
Transducers:
Low Frequency Model: 252F
Diameter: 300 mm (12 in.)
Voice Coil: 50 mm (2 in.) Differential Drive
Magnet Type: Neodymium with integral heatsink
Cone Type: Carbon Fiber Composite
Impedance: 2 ohm
User Controls:
Low Frequency Control (< 50 Hz) +2 dB, 0 dB, -2 dB
Left, Center and Right Inputs: XLR Balanced (-10 dBv/+4 dBu Nominal, Pin 2 Hot)
Discrete Input: XLR Balanced (+4 dBu Nominal, Pin 2 Hot)
Calibrated Input Level 1 : -10 dBv, +4 dBu, +8 dBu
Variable Input Attenuation 1 : 0 - 13 dB
Left, Center and Right Outputs: XLR Balanced (-10 dBv/+4 dBu Nominal, Pin 2 Hot)
Output High Pass Filters 2 : 80 Hz 2nd Order Bessel (Selectable to Full Range)
Polarity Adjustment: Normal or Inverted
Remote Bypass Connector: 1/4" Tip/Sleeve Jack
Physical:
Finish: Black, Low-Gloss, "Sand Texture"
Baffle Material: Carbon Fiber Composite
Enclosure Volume (net): 50 liter (1.8 cu. ft.)
Net Weight: 22.7 kg (50 lbs)
Dimensions (WxHxD): 63.5 x 39.4 x 29.2 cm (25.0 x 15.5 x 11.5 in.)
1
Amber LED - Bypass Mode
Red LED - Limiter Activated
with Dynamic Braking Coil
Amplitude contribution with LSR12P and 28P
96 dB/1 m (Distortion raised 20 dB)
Low Frequency Adjustments
Flat
-2 dB
-4 dB
Notes:
1 Left, Center and Right Inputs
2 Produces Quasi-fourth order Linkwitz-Riley Acoustic High pass alignment when
used with LSR28P or LSR32.
All measurements unless otherwise stated made anechoically in a 4π environment
at 2 meters and referenced to 1 meter by the inverse square law.
The reference measurement microphone position is located perpendicular to the
upper edge of the center of woofer trim ring.
Acoustic Loading provided by the listening room will increase maximum SPL
capabilities 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 level at the stated measurement distance. Distortion
figures refer to the maximum distortion measured in any 1/10th octave wide
band in the stated frequency range.
JBL continually engages in research related to produce improvement. New mate-
rials, production methods, and design refinements are introduced into existing
products without notice as a routine expression of that philosophy. For this rea-
son, any current JBL product may differ in some respect from its published
description, but will always equal or exceed the original design specifications
unless otherwise stated.
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