JBL Synthesis SK2-1000 Review: Ranked #143 of 221

Last updated: October 15, 2026

The JBL Synthesis SK2-1000 ranks #143 out of 221 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 SK2-1000 - ranked #143 of 221 Large Size Bookshelf Speakers · Editor's rating 3.6/5

#143 JBL Synthesis SK2-1000: $15,190 per pair Discontinued eBay

Pros: A large JBL Synthesis companion speaker with twin 10-inch woofers and beryllium compression drivers on a horn, built for very high output in dedicated home theaters. Published measurements give scores of 4.27 on its own and 6.80 with an ideal subwoofer, close to the JBL Synthesis SK2-3300. Measured bass extension of 47.4Hz (-10dB).

Cons: Discontinued and sold only through JBL Synthesis dealers, so it is now found used. The data behind its score is low quality (smoothed vendor curves), the on-axis response is uneven (0.53 band deviation), and bass reaches only 79.2Hz at -3dB, so it needs subwoofers.

Bass Extension (-10dB)about 47.4Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points)
Bass Extension (-3dB)79.2Hz (measured, manufacturer data via spinorama.org)
DIY KitNo
Drivers2 x 10” woofers, 3” beryllium compression driver, 1” beryllium ultra-high-frequency driver
Spinorama Preference Score4.27 (spinorama.org)
Spinorama Preference Score with Perfect Sub6.80 (spinorama.org)

Frequency Response

How the JBL Synthesis SK2-1000 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 SK2-1000-24-18-12-60+6dB20501002005001k2k5k10k20k

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

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