JBL 2240H 18 inch professional woofer pair

JBL 2240H 18″ Professional Low-Frequency Woofer Pair – 8 Ohm – Restored – 1-Year Warranty

Matched pair of JBL 2240H – 18-inch (46 cm) professional low-frequency woofers from JBL’s Professional Series
8-ohm nominal impedance, 600 W continuous program power rating
98 dB (1 W / 1 m) sensitivity, 30 Hz – 2 kHz frequency range, Fs 30 Hz
4-inch edge-wound copper ribbon voice coil, SFG magnetic structure, cast aluminum frame
For bass-reflex or horn-loaded enclosures – recommended crossover at 800 Hz or below
Original cones in good condition on both woofers
Serviced, inspected and tested by HQaudios
Backed by our 1-Year HQaudios Seller Warranty

SKU: 1SELC0900 Categories: JBL, Refurbished

Description
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JBL 2240H 18″ Professional Low-Frequency Woofer Pair – 8 Ohm

Inspected & Tested by HQaudios – Backed by Our 1-Year Warranty

KEY HIGHLIGHTS

Matched pair of JBL 2240H – 18-inch (46 cm) professional low-frequency woofers from JBL’s Professional Series

8-ohm nominal impedance, 600 W continuous program power rating

98 dB (1 W / 1 m) sensitivity, 30 Hz – 2 kHz frequency range, Fs 30 Hz

4-inch edge-wound copper ribbon voice coil, SFG magnetic structure, cast aluminum frame

For bass-reflex or horn-loaded enclosures – recommended crossover at 800 Hz or below

Original cones in good condition on both woofers

Serviced, inspected and tested by HQaudios

Backed by our 1-Year HQaudios Seller Warranty

PRODUCT OVERVIEW

The JBL 2240H is an 18-inch low-frequency loudspeaker from JBL’s Professional Series, introduced around 1981 for sound reinforcement and large high-output systems.

It uses JBL’s SFG magnetic structure, a 4-inch edge-wound copper ribbon voice coil and a rigid cast aluminum frame, rated at 600 W continuous program power with 98 dB sensitivity. It works in bass-reflex or horn-loaded enclosures and is typically crossed over at 800 Hz or below.

This listing is for a pair of JBL 2240H woofers (serials 22763 and 21803), a direct replacement or upgrade for JBL professional and studio systems built around the 2240 family.

HQAUDIOS RESTORATION & TESTING

Before Restoration

Both JBL 2240H woofers were carefully inspected upon arrival to evaluate their mechanical, electrical, and cosmetic condition.

The cone, surround and spider were checked for originality, tears and glue joints that had loosened with age. The cone was moved by hand through its full travel to check for voice-coil rub – a scratching noise or a stiff, binding cone indicates a shifted or heat-damaged voice coil. The DC resistance of the voice coil was measured against its nominal impedance, and the terminals and lead wires were inspected.

The inspection results were used to determine the service required for each unit.

During Restoration

Based on the inspection results, both woofers were serviced according to HQaudios’ technical standards while preserving their original engineering.

Original Cones: Both woofers retain their original cones, which are in good condition.

Cleaning & Detailing: The frames, cones and terminals were cleaned and detailed.

After Restoration / Final Testing

Once service was completed, both woofers were tested under real operating conditions.

Function Test: Each woofer was driven across its working range to confirm clean, free cone movement with no rub or buzz.

Listening Test: The woofers were tested with music in a working system to confirm clean, controlled bass output.

Final QC: Only after completing HQaudios’ inspection and testing process were the woofers approved and prepared for their next owner.

CONDITION

Technical Condition

Cones & Suspension: Original cones – inspected; surrounds and spiders inspected

Voice Coils: No rub; DC resistance checked on both units

Terminals: Inspected and cleaned

Cosmetic Condition

Frames & Magnets: Presentable condition with signs of age and use; one label shows light scuffs

Labels: Original JBL Professional Series labels, model 2240H, 8 ohms

Overall Presentation: Please review all photos for exact cosmetic details.

Cone & Voice Coil Inspected

DC Resistance Checked

Function & Listening Test Completed

SPECIFICATIONS

Brand: JBL

Model: 2240H

Type: 18-inch Professional Low-Frequency Loudspeaker

Introduced: circa 1981

Nominal Impedance: 8 Ohms

Power Rating: 600 W continuous program

Sensitivity: 98 dB (1 W / 1 m)

Frequency Range: 30 Hz – 2 kHz

Resonance (Fs): 30 Hz

Recommended Crossover: 800 Hz or below

Voice Coil: 4-inch edge-wound copper ribbon

Dimensions (each): approx. 18.3 in diameter x 7.3 in depth

Weight (each, packed, factory): approx. 30 lbs

Serial Numbers: 22763 and 21803

WHAT IS INCLUDED

2 JBL 2240H 18-inch Woofers (serials 22763 and 21803) as shown in the listing photos

Only the items specifically listed above are included. Speaker cabinets, crossovers, cables and mounting hardware are not included.

SHIPPING & PACKAGING

Your vintage audio equipment will be professionally packed by HQaudios using protective materials appropriate for its size, weight, and construction. Large or heavy items may be palletized and shipped by freight when required for safer transportation.

HQaudios Professional Shipping and Packaging

1-YEAR WARRANTY & CUSTOMER SUPPORT

Your purchase is backed by our 1-Year HQaudios Seller Warranty (this is an HQaudios warranty, not a JBL manufacturer warranty). Our team provides support before and after your purchase. If you have questions about setup, operation, compatibility, or your order, please contact HQaudios for assistance.