Automatically analyzes and corrects the sound for accurate mixing.
The JBL LSR4300 Series Studio Monitors are designed for critical stereo and multi-channel audio production applications that require exceptional spectral accuracy and high SPL capability. Exclusive technology from JBL automatically analyzes and corrects the response of each speaker in the room for absolute accuracy in mixing.
Acknowledging that much of today's production is carried out in acoustically untreated rooms, the LSR4300 Series is the first professional monitor to combine JBL's Linear Spatial Reference technology and automated RMCTM Room Mode Correction, an onboard system that automatically compensates for low frequency anomalies measured at the mix position.
The LSR4300 enhances computer-based production by incorporating system-wide volume control, input source selection, individual speaker solo and user EQ. Harman HiQnetTM Network protocol enables centralized system-wide control from any speaker, wireless remote control, or computer using LSR4300 Control Center Software.
438H Low Frequency Transducer
The 8" woofer utilizes a powerful, shielded lightweight neodymium magnet which can be used in close proximity to CRT-type monitors with no interference. The transducer utilizes a copper-clad polepiece that improves high frequency output by reducing voice coil inductance. A copper ribbon voice coil ensures high sensitivity, and a flux shorting ring stabilizes the magnetic field in the gap, reducing distortion. Heat sinking has been placed close to the magnetic gap in order to draw out heat as efficiently as possible. The cone is polymer coated for uniformity of response over the woofer's passband.
431G High Frequency Transducer
The high frequency transducer has a treated silk diaphragm that produces uniform and smooth sound. Its flat ribbon aluminum voice coil ensures low-moving mass and enables the transducer to achieve response out to 22kHz. A lightweight neodymium magnet structure with integral heat sinking, along with ferrofluid in the magnetic gap, enable the transducer to produce high peak output levels with minimal power compression. The magnet structure is integrally shielded, enabling the system to be used in proximity to CRT-type monitors with no interference.
Bi-amplified Power System
The LSR4328P incorporates 2 high power amplifiers that provide 150 watts of power to the low frequency transducer and 70 watts of power to the high frequency transducer. A precision digital dividing network having high-order Linkwitz-Riley slope characteristics for smooth transition between transducers, results in exceptional imaging and lack of time smear. The circuitry also yields a tonal-artifact-free noise floor.
Network and Digital Features
The LSR4300 Series utilizes the Harman HiQnetTM network protocol that allows centralized control of a multi-channel system from a from any speaker's front panel, wireless remote control, or computer via a standard USB connection and LSR4300 Control Center Software. The network is configured using supplied CAT5 cable and by setting a DIP switch on each speaker. Harman HiQnet also enables synchronized RMC calibration of all speakers on the network.
JBL LSR 4328P Studio Monitor Pair Features:
Key Features: Advanced LSR Linear Spatial
Reference Design provides neutral off-axis response for greater clarity at the mix position
Automated RMCTM Room Mode
Correction system with calibration microphone measures and automatically compensates for low frequency standing waves and boundary conditions
Harman HiQnetTM Network Protocol enables system-wide control of level, EQ, input selection, solo and more
Wireless remote control and LSR4300
Control Center Software enable control from the listening position
AES/EBU, S/PDIF digital inputs
Balanced analog input with selectable +4dBu / -10 dBV sensitivity
Bi-amplified design eliminates the need for external amplification
Front panel output meter with variable brightness displays signal level
Custom designed, self-shielded transducers with neodymium motor structures for exceptional transient response and superb power-handling
Integrated mounting points allow
wall mounting for greater placement options
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
Superb sound from the name you've learned to trust - JBL! Order today.
JBL LSR 4328P Studio Monitor Pair Specifications:
Frequency Response: (+/- 1.5 dB): 55Hz—20kHz
Enclosure Resonant Frequency: 52Hz
Low Frequency Extension: User controls set to default
-3 dB: 47 Hz — 22 kHz
-10 dB: 39 Hz — 32 kHz
Low-High Frequency Crossover: Digital Crossover: 2.4kHz, 8th order LR LF/4th order BW HF
Distortion, 96dB SPL,
1 m: Mid-High Frequency
(200 Hz - 20 kHz)
2nd Harmonic: <0.4%
3rd Harmonic: <0.3%
Low Frequency (<200 Hz)
2nd Harmonic: <0.8%
3rd Harmonic: <1.4%
Measured Maximum Continuous SPL : 106dB / 1m
Measured Maximum Peak SPL: 112dB / 1m
Maximum Peak SPL Per Pair: 118dB SPL / 1m
Low Frequency Model: 436H
Diameter: 159 mm (6-1/4")
Voice Coil: 1.5" (38 mm)
Magnet Type: Neodymium
Cone Type: Polymer coated paper fiber
Impedance: 8 ohms
High Frequency Model: 431G
Diameter: 25 mm (1 in) diaphragm
Voice Coil: 1" (25 mm)
Magnet Type: Neodymium, shielded with integral heat sink
Diaphragm Type: Silk Dome
Other Features: Elliptical oblate spheroidal waveguide
Impedance: 4 ohms
Amplifier:
Low Frequency Topology: Class A-B Monolithic, Balanced
Sine Wave Power Rating: 150 watts (<0.1% THD into rated impedance)
THD + N, _ Power: <0.02%
High Frequency Topology: Class A-B Monolithic
Sine Wave Power Rating: 70 watts (<0.1% THD into rated impedance)
THD + N, _ Power: <0.02%
AC Input Voltage: 115 VAC, 60 Hz (230VAC, 50 Hz — models LSR4328P/230 and
LSR4326P/230)
AC Input Connector: IEC
Self-Generated Noise Level: <13 dBA / 1m tonal artifact-free noise floor using analog input
1/8TH Power Rating: 13 watts LSR4326P
Full Power Rating (100 hrs. IEC 58 watts IEC Pink Noise LF Channel Only
pink noise, 6dB crest Factor):
Wattage Rating: AC at 1/8th power IEC Pink Noise 60 watts
Maximum Current: AC at maximum power output (audio)
120V AC line 2.2A (LSR4328P, LSR4326P)
230V AC line 1.1A (LSR4328P/230, LSR4326P/230)
Fuse Value: 5A, 250VAC, Time Lag (LSR4328P, LSR4326P)
2.5A, 250VAC, Time Lag (LSR4328P/230, LSR4326P/230)
Inputs and Outputs
Analog XLR IN: Selectable +4 dBu/-10 dBV; Input Impedance 10K.
Positive voltage applied to XLR pin 2 produces outward woofer
motion
1/4-in tip-ring-sleeve IN: Balanced or unbalanced, Selectable +4 dBu/-10 dBV; Input impedance 20K. Positive voltage applied to 1/4" tip produces
I've used these non-stop for the last 3.5 years. Simply the best monitors ever. So many clients have commented on their amazing sound. Enables me to get the mix right the first time, every time. Worth twice the price.
Overall
Quality
Features
Value
Outstanding Monitors!!!
Posted by mutantcoyote99 from Michigan on Feb 27, 2008
Experience w/product: I own it
Reviewer's Background: Singer/songwriter/arranger
Reviewer's Play Style: Rock/Pop/Alternative
The clarity and honesty of these monitors is stunning, great value, you won't be sorry if you buy them!!
Overall
Quality
Features
Value
So Good
Posted by Mutant Coyote from Michigan on Nov 29, 2007
Experience w/product: I own it
Reviewer's Background: Musician/engineer/producer
Reviewer's Play Style: a bit of everything
These monitors are ridiculous! I am hearing things in my mixes that I have never heard before, well worth the money. Completely true representation of what has been recorded.
Overall
Quality
Features
Value
Magic.....Just Magic
Posted by Zach from Salt Lake City, UT on Apr 12, 2006
Experience w/product: I own it
Reviewer's Background: Musician, Live Engineer, Recording Engineer
Reviewer's Play Style: Rock, Ska, Regga
I got these monitors yesterday, and I am really pleased with them. As my studio is still be re-modeled, I was unable to try them in my control room. I do, however have a decent home theater. I replaced my main left/right speakers with the LSR4328P's, ran the RMC, and turned up the music. All I can say is wow! These monitors sound great. They give a very accurate representation of the source music. They are not tubby or overly bright like so many powered monitors these days are. And, with the RMC, they can automatically compensate for nasty room nodes. This really cleans up the low and low/mid response of the speaker system. Hats off to JBL for getting this one right.
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