JBL 4305H Studio Monitor Speakers Pair – Professionally Restored – 1-Year Warranty

$1,799

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  • JBL 4305H – compact 2-way studio monitor
  • Horn-loaded titanium-dome compression driver and white-cone woofer
  • 55 Hz – 35 kHz frequency response, 89 dB sensitivity
  • New L-pad level controls, mid/high driver surrounds replaced
  • Cabinets re-veneered and refinished in walnut-tone PU lacquer, new badges and grilles
  • Backed by our 1-Year HQaudios Seller Warranty

1 in stock

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SKU: 12LC0034 - VS24 Categories: , ,

SOUND DEMO / AUDIO EXPERIENCE


JBL 4305H Studio Monitor Speakers Pair Sound Demo

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

JBL 4305H Studio Monitor Speakers Pair
Professionally Restored by HQaudios – Inspected & Tested – Backed by Our 1-Year Warranty

KEY HIGHLIGHTS
JBL 4305H – compact 2-way studio monitor
Horn-loaded titanium-dome compression driver and white-cone woofer
55 Hz – 35 kHz frequency response, 89 dB sensitivity
New L-pad level controls, mid/high driver surrounds replaced
Cabinets re-veneered and refinished in walnut-tone PU lacquer, new badges and grilles
Backed by our 1-Year HQaudios Seller Warranty

PRODUCT OVERVIEW
The JBL 4305H is a compact 2-way studio monitor in the tradition of JBL’s 43-series, pairing a white-cone woofer with a horn-loaded titanium-dome compression driver.
Front-panel level adjustment and a cabinet sized for desks, stands and shelves make it a versatile monitor for near-field listening and smaller rooms.
This pair has been restored by HQaudios with new level controls, refinished cabinets, new badges and new grilles.


HQAUDIOS RESTORATION & TESTING

Before Restoration
The JBL 4305H pair was carefully inspected upon arrival to evaluate its mechanical, electrical, and cosmetic condition.
Each cabinet, cone, surround, and spider was checked for originality and for glue joints that had loosened or shifted with age. Every driver was tested by hand for voice-coil rub – a scratching noise or a stiff, binding cone indicates a shifted or heat-damaged voice coil. The DC resistance of every driver was checked against its nominal impedance. The crossover networks were examined for bulging or leaking capacitors, each capacitor was measured against its original value (within 10% tolerance), and the level controls, wiring and terminals were inspected.
Inspection Findings: On this pair, the inspection found scratches and lifting veneer on the cabinets, dust inside the cabinets, scratched badges, a damaged logo with worn paint, dirty terminals, and a crackling, noisy level control. All drivers were checked for voice-coil rub, surrounds and impedance.
The inspection results were used to determine the work required for this specific pair.

During Restoration
Based on the inspection results, this JBL 4305H pair was restored according to HQaudios’ technical standards while preserving its original engineering and voicing.
Level Controls: The crackling L-pad attenuators were replaced with new ones for smooth, noise-free adjustment.
High-Frequency Drivers: The worn surrounds and gaskets were replaced.
Woofers: The magnet assemblies were reinforced with adhesive to prevent shifting.
Crossover Networks: The crossover boards were cleaned and checked.
Cabinets: Deep scratches were touched up, the veneer was repaired and the cabinets were refinished in walnut-tone PU lacquer. The interiors were cleaned and dust was blown out.
Badges & Logos: The badges and logos were replaced with new ones.
Grilles: New grille cloth was fitted and the grille frames were reinforced from the inside.
Controls: The control knobs were cleaned.
Original Drivers: All drivers retain their original cones and diaphragms, which are in good condition.
Cleaning & Detailing: The drivers, crossover boards and terminals were cleaned, and the cabinets and grilles were cleaned and detailed.

After Restoration / Final Testing
Once restoration was completed, the pair underwent comprehensive testing under real operating conditions.
Phase Check: Driver polarity was verified using a phase-reversal check to ensure both speakers play in correct phase.
Level Controls: The level controls were checked for smooth, noise-free adjustment on both speakers.
Listening Test: The pair underwent an extended real-world listening test with a wide range of music to confirm dynamics, tonal balance, and stereo imaging.
Final QC: Only after completing HQaudios’ restoration and testing process was the pair approved and prepared for its next owner.

CONDITION

Technical Condition
Woofers: Original JBL woofers, checked on both speakers
High-Frequency Drivers: Original compression drivers with new surrounds, checked on both speakers
Level Controls: New L-pads
Crossover Networks: Cleaned and checked
Phase: Polarity checked on both speakers

Cosmetic Condition
Cabinets: Re-veneered and refinished in walnut-tone PU lacquer, black front baffles
Grilles: New grille cloth on reinforced frames
Badges & Logos: New
Overall Presentation: A refinished pair with a clean presentation. Please review all photos for exact cosmetic details.

All Drivers Checked
Level Controls Serviced
Crossover Capacitors Measured
Phase Checked
Final Listening Test Completed

SPECIFICATIONS
Brand: JBL
Model: 4305H
Type: 2-Way Studio Monitor Loudspeaker
Drivers: White-cone woofer, 1-inch titanium-dome compression driver on horn
Crossover Frequency: 4.5 kHz
Frequency Response: 55 Hz – 35 kHz
Sensitivity: 89 dB (2.83 V / 1 m)
Nominal Impedance: 6 Ohms
Maximum Input: 75 W
Dimensions (each): approx. 10.7 W x 18.1 H x 11.2 D in
Weight (each): approx. 25.4 lbs

WHAT IS INCLUDED
1 Pair of JBL 4305H Studio Monitor Speakers
2 Front Grilles shown in the listing photos
Only the items specifically listed above are included. No stands are included; any stands, bases or platforms shown in the photos are for display only. Speaker cables and other accessories 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
Please contact us before purchase for the most current availability information.

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.

MORE FROM HQAUDIOS

HQaudios Vintage Audio Repair and Restoration
HQaudios Custom Audio Projects

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