JBL 7510B

The JBL 7510B is a cinema screen-channel speaker — designed to sit behind a perforated movie screen in theater installations. It's a two-way, bass-reflex design in a black vinyl-wrapped MDF enclosure, with a horn-loaded compression driver for the highs. The exact woofer size isn't clearly documented in any source we've found; some listings hint at a 12-inch driver, but it's not stated explicitly enough to confirm.

What is documented: JBL's own material gives the frequency response as 80 Hz–15 kHz (basic) and 80 Hz–18 kHz (in cinema use). The nominal impedance is 8Ω. Power handling is where the record gets murky — one forum source says 100 watts, another spec sheet says 75W RMS. Given the conflict, we're leaving the rating off rather than guessing. Sensitivity is similarly split: 98 dB (1W/1m) per one source, 93 dB per another. The 98 dB figure appears in the more detailed spec sheet, but we can't fully reconcile the discrepancy.

Owners on audiokarma are enthusiastic — calling it "brutally dynamic and honest," and noting it works surprisingly well in home theater settings. The known weak point is foam surround rot on the woofer; refoam kits are readily available, which is typical for JBL drivers of this era. The model is discontinued.

Beyond that, the record is thin. No production years, no original price, no dimensions or weight, and no clear differentiation between the 7510 and the 7510B have surfaced in our research. Sound and Communication (July 1993, p.53) briefly pictured the 7510B in a survey of automatic mic mixer history — not for its own merits, but as an illustration of JBL's cinema lineup at the time. If you have documentation on this one, we'd love to hear from you.