JBL 4628B

The JBL 4628B is a compact three-way studio monitor from JBL's professional line, built for high-level monitoring in control rooms. It appeared in the JBL Professional Catalog of 1983. Beyond that listing, the documented record is thin. No production years, original price or period reviews have surfaced.

What is known comes from spec sheets that agree across sources. The 4628B pairs a 12" composite woofer with a 5" cone midrange and a 1" pure titanium compression tweeter, all in a vented bass-reflex enclosure. Crossover points are set at 150 Hz and 2.5 kHz, with two-position level controls for both mid and high frequencies. Sensitivity is rated at 92 dB (1W @ 1m), impedance at 8 ohms, and power handling at 300 watts continuous program. Frequency response is specified as 45 Hz to 16 kHz (±3 dB). The monitor was also used in professional recording studios of the early 1990s, including R. A. Reed Productions in Portland, Oregon Mix (1993, p.190).

The system measures 23.5" x 15.75" x 13" (597 x 400 x 330 mm) and weighs 56 lbs (25.4 kg). Input is via binding posts. The horn-loaded design and titanium compression tweeter place it in JBL's professional monitor family of the early 1980s, a smaller sibling to the larger studio monitors of that era. It was intended for near-field or midfield use, where accurate, high-output reproduction mattered more than cosmetic refinement.

• Type: 3-way compact studio monitor, vented bass-reflex
• LF: 12" (300 mm) composite woofer (127H-1)
• MF: 5" (130 mm) cone midrange (104H-2)
• HF: 1" (25 mm) pure titanium compression driver (033Ti)
• Crossover: 150 Hz, 2.5 kHz
• Frequency response: 45 Hz – 16 kHz (±3 dB)
• Sensitivity: 92 dB SPL (1W @ 1m)
• Power handling: 300 W continuous program
• Impedance: 8 ohms
• Dimensions: 23.5" x 15.75" x 13" (597 x 400 x 330 mm)
• Weight: 56 lbs (25.4 kg)
• Controls: Mid and high frequency level controls (2-position)

No owner reviews, market pricing, or common repair issues have been documented in the available sources. If you own a pair, you're holding a piece of JBL's professional monitor lineage that the written record hasn't fully captured.

eBay Listings

JBL Professional Series Cabaret 4628B Speaker Crossover Netw

$65.00

SET of 2 GRILLS BASS PA SPEAKERS FROM CABARET 4628B

$306

As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.

Related Models

• JBL 075
• JBL 077
• JBL 120Ti
• JBL 124A
• JBL 124H
• Braun AUDIO-1 (1965)
• Braun AUDIO-250 (1965)
• Magnavox Component Systems (1972)
• Acoustic Research AR (1967-1976)
• Acoustic Research 11