JBL 4311WX-A Control Monitor Speaker Pair – Restored – 1-Year Warranty

Professionally Restored, Inspected & Fully Tested by HQaudios – Backed by Our 1-Year Warranty

About This Pair

Offered here is an actual JBL 4311WX-A Control Monitor speaker pair, identified by the rear factory labels on these specific speakers.

The 4311 is one of JBL’s most recognizable vintage professional monitor designs, featuring a 12-inch white-cone woofer, dedicated midrange driver, direct-radiator high-frequency driver, and front-panel Presence and Brilliance controls.

This specific pair has been professionally serviced, inspected, and fully tested by HQaudios before being offered for sale.

Sound Demo / Audio Experience

Watch the sound demonstration of this exact pair to see and hear the actual speakers operating before purchase.

For the best listening experience, please use headphones or external speakers.

Key Highlights

• Actual JBL 4311WX-A Control Monitor pair
• Classic 3-way JBL professional monitor design
• 12-inch white-cone woofer
• 5-inch cone midrange driver
• Direct-radiator high-frequency driver
• Front-panel Presence and Brilliance level controls
• Bass-reflex / ported enclosure
• Oiled walnut / wood veneer finish
• Professionally serviced and tested by HQaudios
• Backed by our 1-Year HQaudios Warranty

Why the JBL 4311 Is Notable

The JBL 4311 series became one of JBL’s defining compact control-monitor designs, combining a large white-cone low-frequency driver, dedicated midrange and high-frequency sections, front-mounted response controls, and a compact bass-reflex enclosure.

This pair carries the 4311WX-A rear designation, an important identification detail for collectors and buyers seeking this specific revision.

HQaudios Restoration & Testing

This specific JBL 4311WX-A pair was inspected and serviced by our technicians.

The available service record documents work on the speaker systems and cosmetic condition, followed by final functional testing.

• Low-frequency sections inspected and checked for proper operation
• Midrange sections inspected and checked for proper operation
• High-frequency sections inspected and checked for proper operation
• Driver condition inspected
• Front-panel controls checked for proper operation
• Cabinet and exterior condition inspected
• Final functional sound testing completed after service

Close-up, rear-label, and service photographs show the actual pair being offered.

Technical Condition

Both speakers were tested after service for proper low-, mid-, and high-frequency output.

The front-panel Presence and Brilliance controls were checked for operation, and the pair was approved for sale after final testing.

Cosmetic Condition

The speakers present very well after restoration while retaining normal age-related wear consistent with vintage use.

Minor cosmetic wear may remain on the cabinets, front baffles, driver trim, controls, hardware, and rear panels.

Please review all actual-unit photographs carefully for the exact cosmetic condition of this pair.

Factory Specifications

Factory-specification note: Driver model numbers and technical specifications above represent the standard JBL 4311 / 4311WX family configuration. The rear labels and actual-unit photographs identify this pair as 4311WX-A.

What’s Included

• JBL 4311WX-A Control Monitor speaker pair
• Speaker grilles shown in the photos

Speaker stands / display bases shown in some photos are not included.

Suggested Pairing

With an 8-ohm nominal impedance and approximately 91 dB sensitivity, the JBL 4311 can be paired with a wide range of properly serviced vintage or modern amplifiers.

Use clean, stable amplification and avoid sustained clipping or excessive low-frequency boost.

Professional Packing & Shipping

Each speaker is individually protected for safe transit.

• Cabinet corners and edges protected
• Front baffle and driver areas protected
• Grilles protected separately as needed
• Rear terminals and controls protected
• Secure cushioning used to reduce movement during transit

Warranty & Support

This restored JBL speaker pair is backed by our 1-Year HQaudios Warranty.

We also provide post-sale support for setup, operation, and general ownership questions.

HQaudios – Professionally Restored Vintage Audio.