JBL Control 5 (1987)

Name: JBL Control 5
Brand: JBL

A molded, magnetically shielded two-way that JBL built to survive broadcast trucks and A/V racks. Collectors now chase it for desk duty.

Overview

The Control 5 arrived in 1987. JBL wanted a professional monitor that could go places a bookshelf speaker has no business being. It's a 2-way, 2-speaker bass reflex design, sold as a pair, and JBL called it a "setting-free type" - meaning it holds its tonal balance regardless of how it's oriented or mounted.

The drivers first. A 16.5 cm cone woofer sits below a dome tweeter with a pure titanium diaphragm. Both are magnetically shielded. Each driver carries a cancel magnet and shield cover, so the speaker can sit right next to a CRT video monitor without smearing the picture. In 1987 broadcast trucks and A/V control rooms were full of tube displays, so this was a requirement, not a bullet point. The enclosure is molded polypropylene with a foaming agent worked into the resin to damp internal resonance. It also shrugs off knocks and scrapes that would crack a veneered box.

JBL's own literature pitched the Control 5 as a high-performance, wide-range control monitor meant to serve as a primary sound source in broadcast trucks, A/V control rooms and foreground music systems. Recording-Engineer (April 1990, p.72) ran the company's copy describing power handling of 175 watts, outstanding dynamic range, and smooth frequency response with what the ad called excellent clarity and imaging. That is a lot of headroom for a speaker this size. The crossover network includes a built-in protection circuit guarding against high instantaneous input.

The Control 5 is the speaker people buy for a second system, a workshop or a desktop, then end up keeping. It's discontinued - availability is listed as discontinued by at least one retailer - but the secondary market stays busy at roughly six transactions a month.

Key Features

16.5 cm Woofer with SSP-Reinforced Cone

The low-frequency driver is a 16.5 cm cone type - 165 mm, or 6½ inches. JBL reinforced the vibration plate by laminating a special film over SSP, super sulfite pulp, to stiffen the cone and keep piston motion clean. The voice coil is copper-clad aluminum wire wound on an aluminum bobbin, chosen to improve piston motion and allowable input at the same time. In plain terms, the cone stays rigid and the coil sheds heat, which is part of how the speaker earns its power rating.

Pure Titanium Dome Tweeter

Up top sits a dome tweeter with a pure titanium diaphragm. Titanium was the material of choice in this era for tweeters that needed to stay pistonic at high frequencies without going soft or splashy. JBL paired it with a urethane foam damper positioned to suppress second-harmonic resonance, a distortion that otherwise colors the lower treble.

Shielded Magnet Structure

Every driver in the Control 5 carries a cancel magnet and a shield cover, and the molded enclosure itself is built around a shielded magnet structure. This is the feature that defined the speaker's professional life. Put a pair beside a video monitor and the picture stays clean, with no color fringing and no bent geometry. For a CRT-based editing bay, that's the whole point.

Polypropylene Foam Enclosure and Setting-Free Mounting

The cabinet is molded from polypropylene with a special foaming agent to reduce internal resonance. JBL marketed the design as setting-free, and the rear panel backs that up with ¼ x 20 threaded brass bushings for accessory attachment. The speaker works with JBL's official MTC-series swivel brackets and with the MTC-53 rack mount brackets, so it can go on a wall, a ceiling, a rack shelf or a mic stand. Owners report the mounting flexibility is why these survive in odd installations where a wooden box would have been drilled to death.

Integral Protection Circuit

The crossover network includes a built-in protection circuit that guards against high instantaneous input. It keeps a small monitor alive when a signal gets patched in hot or a power amp clips hard. It's also why so many used examples come to market working rather than blown.

Historical Context

The Control 5 was introduced in 1987 as part of JBL's CONTROL series, a line of compact monitors the company positioned for professional and installation work rather than the domestic hi-fi market. JBL's advertising of the period placed the Control 5 in major recording and teleproduction facilities, with the smaller Control 1 turning up in home studios and MIDI workstations.

Pricing in Japan put the pair at ¥85,000 at launch, dropping to ¥75,000 around 1989. That's a serious outlay for a compact monitor, and it shows who JBL was selling to: facilities that needed a shielded, mountable, hard-wearing speaker. The model is now discontinued. No production end year has surfaced in the available documentation, and the record on common failures is thin beyond refoaming, which owners of aging examples routinely do on the woofers.

Collectibility & Value

The Control 5 is not a museum piece. Completed eBay sales over the past twelve months ran from $72 to $248, with a median of $139 across eleven sales. That's roughly six transactions a month, enough volume that patient buyers can wait for a clean pair. A current retail listing shows $215.00 each for new-old-stock or dealer inventory.

Original tweeter drivers (the UTC05 49), crossover networks and terminal assemblies, and used original 6.5-inch woofers (part number C5003, 4 ohms) all circulate regularly, typically in the $35 - $50 range. MTC-53 rack mount brackets turn up for around $40. Refoaming is the known maintenance task. Forum threads on the subject are easy to find, and any buyer should inspect the woofer surrounds before committing. Cosmetic wear is common and generally harmless; one seller's description of light scratches and a few dings that don't affect performance is typical.

Values are modest and likely to stay that way. These were built in quantity for professional deployment, they're molded rather than veneered, and they don't carry the romance of a walnut L-series cabinet. What they carry instead is usefulness — a shielded, mountable, genuinely tough compact monitor that still does the job it was hired for.

Market Value

┌──────────────────────────────────────────────────────────────────────────┐
│ JBL CONTROL 5                                                   Nov 2026 │
├──────────────────────────────────────────────────────────────────────────┤
│ High      $248                                    Latest             $72 │
│ Median    $139                                    Trend                — │
│ Low       $55                                     Volume           ~6/mo │
├──────────────────────────────────────────────────────────────────────────┤
│   $300 ┤                                                                 │
│        │                                                                 │
│        │..                                                               │
│   $193 ┤                                                                 │
│        │                                 .                               │
│        │  .                                   .              .           │
│        │                                                                 │
│    $50 ┤.               .                           .            .      .│
│        ├─────────────────────────────────────────────────────────────────│
│    vol │█▄▄             ▄                ▄    ▄     ▄        ▄   ▄      ▄│
│        └─────────────────────────────────────────────────────────────────│
│         2026-04                      2026-06                      2026-07│
└──────────────────────────────────────────────────────────────────────────┘

eBay completed sales. Excludes accessories, parts, and non-working units. Hover points for details.