JBL Synthesis 800 Array Review: Ranked #119 of 222

Last updated: October 15, 2026

The JBL Synthesis 800 Array ranks #119 out of 222 total Large Size Bookshelf Speakers for sound quality. See all Passive Home rankings for every top pick.

Brand: JBL

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JBL Synthesis 800 Array - ranked #119 of 222 Large Size Bookshelf Speakers · Editor's rating 3.8/5

#119 JBL Synthesis 800 Array: $6,000 per pair Discontinued eBay

Pros: A compact JBL Synthesis three-way with an 8-inch woofer and a horn-loaded compression driver sitting on top, for high, clean output from a stand-mount box. Published measurements give scores of 5.52 on its own and 7.34 with an ideal subwoofer, higher than the larger JBL Synthesis 1400 Array. Measured bass extension of 35.8Hz (-10dB).

Cons: Discontinued and found only used. Directivity varies a lot (4.12dB), so room reflections sound different from the direct sound, bass reaches 60.5Hz at -3dB, and the measurement data is low quality.

Released2006 (20 years ago)
Bass Extension (-10dB)about 35.8Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points)
Bass Extension (-3dB)60.5Hz (measured, manufacturer data via spinorama.org)
DIY KitNo
Dimensions29.3”H x 10.7”W x 14”D (743 x 273 x 356 mm)
Drivers8” woofer, 175Nd compression driver on a horn, 045Ti ultra-high-frequency driver
Frequency Response55Hz - 40kHz (manufacturer specified)
Impedance8 ohms
Sensitivity88dB (manufacturer specified)
Spinorama Preference Score5.52 (spinorama.org)
Spinorama Preference Score with Perfect Sub7.34 (spinorama.org)
Weight39.7 lbs (18 kg)

Frequency Response

How the JBL Synthesis 800 Array measures across the audible range. A flatter listening window (the sound arriving straight at you) is more neutral: peaks sound forward or harsh, dips sound recessed. The estimated in-room response adds what a typical room does, and there a gentle, even tilt down toward the treble is ideal. Both curves are shifted so their 300 Hz to 3 kHz average sits at 0 dB.

Listening windowEstimated in-room response
Measured frequency response of the JBL Synthesis 800 Array-24-18-12-60+6dB20501002005001k2k5k10k20k

Measurement data: spinorama.org, measured by an independent reviewer.

EQ for a Neutral Response

No EQ preset: the best simple EQ we can fit to these measurements improves the predicted preference score by less than 0.2. The listening window is already close to flat, and what holds the score back, such as narrow ripple in the response or uneven output off-axis, is not something EQ can fix without making it worse elsewhere.

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