JBL LSR-4328P Linear Spatial Reference Bi-amplified Studio Monitor with RMC and Networking


List Price: $955.00

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About JBL LSR-4328P

The JBL LSR4328P is a robust (32.5 lbs.), bi-amplified, 2-way studio monitor speaker, housed in a sturdy, handsome cabinet with a dark graphite finish and a carefully damped and baffled interior. The 8" Neodymium woofer and Waveguide-controlled 1" silk dome tweeter are powered by 150 and 70 watt amplifiers, respectively.

The LSR4328P features a uniquely ambitious front and rear panel set of tune and tone controls that borders on the fanatical in sheer statistical density. Recording and mixing in some strange and wonderful places and these places may foster and nurture the creative spirit, but for critical listening these places often need sound treatment and it doesn't get done and that is why JBL has stocked the LSR4328P with knobs, switches and a remote control - to help us get good mixes in poor acoustic environments.

Now, all of this compensation for room modes, nodes and standing waves, in bright, boomy, dull, fluttery, boxy, cavernous rooms and all the other environmental acoustic aberrations that can make mixing a sad experience, does not come cheaply. But, the LSR4328P is designed very much for an age where a lot of music is recorded outside of the "proper" recording studio and this speaker provides a certain reassurance that no matter where and how strange, the space you're working in really is, you can fix it in the mix.

JBL LSR-4328P Features

  • Integrated mounting points allow wall mounting for greater placement options
  • Custom designed, self-shielded transducers with neodymium motor structures for exceptional transient response and superb power handling
  • Front panel output meter with variable brightness displays signal level
  • Bi-amplified design eliminates the need for external amplification
  • Balanced analog input with selectable +4dBu / -10 dBV sensitivity
  • AES/EBU, S/PDIF digital inputs
  • Wireless remote control and LSR4328P Control Center Software enable control from the listening position
  • Harman HiQnet Network Protocol enables system-wide control of level, EQ, input selection, solo and more
  • Automated RMC Room Mode Correction system with calibration microphone measures and automatically compensates for low frequency standing waves and boundary conditions
  • Advanced LSR Linear Spatial Reference Design provides neutral off-axis response for greater clarity at the mix position
  • Built-in handles facilitate optimum positioning
  • Low and High Frequency Equalization with factory presets allows tailoring of response to preference, or acoustic conditions in the room

JBL LSR-4328P Specifications

Factory Default: 2kHz Shelf, +/- 2dB in _ dB increments 104 corner frequencies between 1kHz and 20.2 kHz accessible via LSR4300 Control Center Software
LF EQ: Factory Default
500 Hz Shelf, +/- 2dB in _ dB increments
137 corner frequencies between 19.7 Hz and 1kHz accessible via LSR4300 Control Center Software
RMC Filter Range
73 Frequencies (1/24th octave centers) between 20 Hz to 160 Hz, with a variable Q from 1 (1.4 octave bandwidth) to 16 (1/11th octave bandwidth and from 3 to 12 dB of attenuation.
RMC Functions
Start, Bypass
Front Panel Controls
Computer Interface
USB Type 1
Network Protocol
Proprietary Harman HiQNet Protocol using RS485
Network Connection
RMC Microphone Input
1/8" tip-ring-sleeve; powered +15 Volts on tip
Digital Input Word Length
24 Bit
Digital Input Sample Rates
96k Hz, 88.2 kHz, 48 kHz, 44.1 kHz, 32 kHz.
Tolerance: +/- 3%
Digital: RCA OUT
Digital: RCA IN
Digital: XLR Out
Digital: XLR IN
Analog: Calibrated Input Sensitivity,
Analog XLR 1/4": +4 dBu: 94 dB SPL / 1 m
-10 dBV: 94 dB SPL / 1 m
Analog: AD Converters
96kHz, 24 Bit, 64x Over sampling
Analog: 1/4-in tip-ring-sleeve IN
Balanced or unbalanced, Selectable +4 dBu/-10 dBV; Input impedance 20K. Positive voltage applied to ¼" tip produces outward woofer motion
Analog: XLR IN
Selectable +4 dBu/-10 dBV; Input Impedance 10K.Positive voltage applied to XLR pin 2 produces outward woofer motion
Fuse Value
5A, 250VAC, Time Lag
Maximum Current
AC at maximum power output (audio)
120V AC line 2.2A
230V AC line 1.1A
Full Power Rating
58 watts IEC Pink Noise LF Channel Only
Wattage Rating
AC at 1/8th power IEC Pink Noise 60 watts
Self-Generated Noise Level
{13 dBA / 1 m tonal artifact-free noise floor using analog input
1/8TH Power Rating
18 watts
AC Input Connector
High Frequency: AC Input Voltage
230VAC, 50 Hz
High Frequency: THD + N, _ Power
High Frequency Topology
Class A-B Monolithic
High Frequency: Sine Wave Power Rating
70 watts ({0.1% THD into rated impedance)
Low Frequency: THD + N, _ Power
Low Frequency: Sine Wave Power Rating
150 watts ({0.1% THD into rated impedance)
Low Frequency Topology
Class A-B Monolithic, Balanced
High Frequency: Impedance
4 ohms
High Frequency: Magnet Type
Neodymium, shielded with integral heat sink
High Frequency: Diaphragm Type
Silk Dome
High Frequency Model
High Frequency: Diameter
25 mm (1 in) diaphragm
High Frequency: Voice Coil
1" (25 mm)
Low Frequency: Cone Type
Polymer coated paper fiber
Low Frequency: Impedance
8 ohms
Low Frequency: Magnet Type
Low Frequency: Voice Coil
2" (51 mm)
Maximum Peak SPL Per Pair
118 dB SPL / 1m
Low Frequency Model
Low Frequency: Diameter
203 mm (8 in)
Measured Maximum Peak SPL
112 dB / 1m
Measured Maximum Continuous SPL
106 dB / 1m
Low Frequency (<200 Hz)
2nd Harmonic: {1.5%
3rd Harmonic: {0.7%
Low-High Frequency Crossover
Digital Crossover: 2.2 kHz, 8th order LR LF/3rd order BW HF
Distortion, 96 dB SPL
1 m: Mid-High Frequency (200 Hz - 20 kHz)
2nd Harmonic: {0.4%
3rd Harmonic: {0.3%
Low Frequency Extension
User controls set to default
-3 dB: 43 Hz-22 kHz
-10 dB: 35 Hz - 32 kHz
Enclosure Resonant Frequency
41 Hz
Frequency Response (+/- 1.5 dB)
50 Hz-20 kHz
1-6 Factory/User plus NULL. Recall only. STORE possible usingLSR4300 Control Center Software
Input Selection
Analog (XLR /1/4")
Rear Panel Controls
Input sensitivity +4dBu/ -10dBV
Eight SPEAKER ID DIP switches: Left, Right, Center, Left Surround, Right Surround, Center Surround, Left Extra, Right Extra
Front Panel Display
31 LED Segments for dBFS and indication of settings
Front Panel Meter
-70 dBFS to 0 dBFS plus CLIP
Rear Panel Indicators
5 LEDs indicate Active input & digital stream selection
Two, flush mounted on sides
4 threaded mounting points conforming to industry standard square pattern, 107.9 mm x 50.8 mm (4 -1/4" x 2" ) center to center. M6 metric threads
Low Frequency Vent
Rear ported linear dynamics aperture
Baffle Construction
Injection-molded structural ABS
Enclosure Construction
19 mm (3/4 in) MDF
Dimensions (W x H x D)
10.5 x 17.25 x 10.6"/ 267 x 438 x 269 mm
15 kg (32.5 lbs)
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