JBL 4312 Studio Monitors – Vintage Late 1970s – Reconed Woofers

JBL 4312 Studio Monitor Speakers – Late 1970s – Serviced & Fully Functional

For sale: a pair of original JBL 4312 studio monitor speakers from the late 1970s.

These are classic West Coast studio monitors, known for their direct, punchy sound and iconic control-room presence. They have been used as intended over the years, but always properly maintained and treated with care.

Condition

Technical condition:
✔ Fully functional
✔ Woofers professionally reconed by a certified JBL service technician
✔ Drivers working perfectly
✔ Ready for immediate use

The professional reconing ensures proper performance and longevity while preserving the original character of these monitors.

Cosmetic condition:
As expected for speakers from the late ’70s, there are signs of use and some cosmetic wear. Nothing unusual for their age, and overall they present very well. Cabinets are solid and structurally sound.

Why These 4312s?

The 4312 is part of JBL’s legendary control monitor lineage
delivering tight bass, forward mids, and detailed highs. They work beautifully in:

• Analog or hybrid studios
• Vintage hi-fi setups
• Listening rooms with character

These are not showroom pieces but honest, well-maintained vintage monitors that perform great.

Feel free to get in touch for additional photos or any specific questions.

• Large Bookshelf Speakers

• Passive Speakers
• Retro Audio
• Vintage Recording Gear
• Professional Audio
• Vintage Audio
• Classic 70s
• Studio Icon
• Collectors Item
• Made in USA
• Serviced
• Reconditioned
• Reconed Woofers
• JBL Service
• Fully Functional
• Well Maintained
• Original Drivers
• Analog Studio
• Recording Studio Monitors
• Hi-Fi Speakers
• Audiophile Speakers
• West Coast Sound
• Vintage HiFi
• Mixing Monitors
• Listening Room Speakers
• JBL 4312
• JBL 4312 Vintage
• JBL Studio Monitor
• Vintage Studio Monitors
• 1970s Speakers
• JBL Control Monitor
• 3-Way Monitor
• Classic JBL