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JBL LSR6325P Monitor

Last year, I reviewed JBL LSR6328P powered speaker and LSR6312SP subwoofer and found the speakers up to the quality-lineage of JBL. With the LSR6325P mini powered monitor, JBL has reduced the size and price, but kept much of the sonic characteristics intact.

Last year, I reviewed JBL LSR6328P powered speaker and LSR6312SP subwoofer and found the speakers up to the quality-lineage of JBL. With the LSR6325P mini powered monitor, JBL has reduced the size and price, but kept much of the sonic characteristics intact.
Product PointsApplications: Studio, broadcast, post production

Key Features: Two-way; 5.25-inch woofer; 1-inch tweeter; EOS waveguide; 100W LF amp; 50W tweeter amp; THX-approved

Price: $399

Contact: JBL Professional at 818-894-8850, Web Site.

Priced at $399 each and street priced as low as $325, the LSR6325P was designed for closefield listening, and it is a good choice for computer workstations and small surround environments. Because of the size and quality, the JBL should also do well in broadcast facilities. It directly replaces the LSR25P.

Measuring a mere 10.5 inches tall, the JBL features a 5.25-inch woofer and 1-inch tweeter and internal power for each driver (100 watts for peak for the woofer, 50 watts peak for the tweeter). I like the simplicity of the small JBL with its front mounted on/off switch and level control, and choice of rear balanced XLR or unbalanced RCA connectors.

A rear panel high-frequency control (DIP switch) also allows custom-tailoring of the treble, depending on your room. An 80 Hz high-pass filter enables use with nonbass management subwoofers. Unlike many small speakers, you can actually fit your fancy power cord connector into the LSR6328P. My Kimber Cable AC cable fit just fine.

The LSR6325P features many of the refinements of its larger brothers including heavy-duty SFG woofer, 1-inch titanium tweeter and the EOS waveguide, which improves dispersion in the listening field. The THX-approved speaker reproduces a claimed 70 Hz – 20 kHz frequency response within a +1 dB, -2 dB window (see our measurements in the bench test). Crossover frequency is listed as 2.8 kHz. Sensitivity is 96 dB at 1 watt/1 meter.

The smooth dark graphite finish over a die cast aluminum cabinet, combined with the perforated bass driver grill and front bass ports, make this an attractive-looking speaker. Each speaker weighs 17 pounds. The speakers are designed in the U.S., but produced in Asia.

In Use

I used the JBL LSR in my computer workstation setup, located on Raxxcess stands, which put the little speaker at exactly ear level. The speakers were toed-in slightly. I initially used them without the subwoofer. All signals were passed to the speakers via a Legacy/Coda High current balanced preamplifier, which was the source selector for a Benchmark DAC-1, 24-bit/96 kHz sampling DAC that was fed by various sources including a Pioneer SACD player, Sony R700 DAT, and the G5.

On first listen, with acoustic guitar recordings, I found the LSR6326Ps to have the same characteristic as its bigger brothers — especially the high mid and low treble smoothness. Unlike other small powered speakers I have tried, the JBLs are not harsh with brass instruments or violins at reasonable levels. Vocals were natural without excessive sibilance. Considering that I set up the speakers freestanding without bass reinforcement help from a wall, the bass was very good for such a small speaker.

The LSR6325Ps have excellent dispersion and should have no problem relaying the audio accurately to the engineer. You can move about quite a bit and not hear a noticeable change in the tone.

These speakers can crank out loud SPLs, but when driven very hard they do get a bit harsh. After all, they are small speakers designed for reasonable levels in smaller rooms. I think maximum levels in the low 90s are plenty loud.

Adding the terrific LSR6312SP subwoofer (PAR 4/04), priced at $1,400 retail offers an extra octave of bass down to under 40 Hz that adds even more smoothness as a system. The sub integrates so seamlessly that you would be hard-pressed to know the difference between the JBLs and a larger speaker — in terms of full frequency reproduction. Five of the LSR6325Ps and the sub are ideal for small-to-medium surround environments. (By buying the JBL sub you also get JBL’s easy-to-adjust, standing wave measurement/reduction system that helps fix boomy bass build-up in troubled listening areas [See PAR 4/04]).

I must mention that near the end of the evaluation process, one of the speakers developed a low-level, internal buzzing. When audio played through it, I could not hear it at the listener position. But without audio, it could clearly be heard. Hopefully, this problem was an anomaly in that speaker only. JBL said it has had no other reports of excessive buzzing.


The JBL LSR6325Ps are an excellent value for a small closefield speaker. They offer accuracy, a smooth, uncolored midrange and treble, and they are very reasonably priced for such quality.

In many small professional home studios and broadcast facilities, the LSR6325Ps plus the subwoofer would make upgrading to larger monitor system unnecessary. Street price for a complete 5.1 system, with five LSR6325Ps and a LSR6312SP subwoofer, is as low as $2,500.