Harbeth H.L. Monitor Mk III reflect its legacy as a precision 2-way BBC-style studio monitor. Sequential serial numbers 2740A and 2740B. Original bill of sale, marketing literature, owners manual, boxes, and packing materials are included. Foam grills have disintegrated from age, but the velcro strips are still present.
Technical Specifications
System Type: 2-way bass reflex (vented enclosure)
Woofer (Mid/Bass): 20 cm (approx. 8") patented polypropylene cone
Tweeter: Soft dome type
Crossover Frequency: 2.0 kHz
Nominal Impedance: 8 Ohms
Sensitivity: 87 dB / W / m
Frequency Response: 50 Hz to 25,000 Hz
Physical DimensionsSize (W x H x D): 325 mm x 637 mm x 302 mm (approx. 12.8" x 25" x 11.9")
Weight: 13 kg (approx. 28.6 lbs) per speaker
Cabinet Material: Mechanically-damped birch plywood enclosure finished in teak veneer.
Design Notes
The Mk III iteration refined the crossover circuitry and the original polypropylene driver balance that founder Dudley Harwood patented. For optimal soundstage performance, it is recommended to place these monitors on heavy 14" to 18" stands, positioned at least 1 meter away from rear walls to properly balance the bass ports.
