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2. GENERAL DESCRIPTION
The TOA HB-1 is a high-power, wall/ceiling-mounted sub-woofer system employing a 20 cm speaker unit.
Although small in size, the HB-1 provides clear super-low frequency sound reproduction thanks to its Acoustic
Super Woofer enclosure construction.
3. FEATURES
• A large, 110 mm-diameter ferrite magnet, a long, 35 mm-diameter voice coil, an aluminum bobbin, and a
rubber roll edge combine to permit large voice coil movement at high power input.
• The Acoustic Super Woofer system enclosure creates an acoustic band-pass filter that reproduces super-
low frequencies down to 45 Hz and realizes slow-slope phase characteristics.
• The enclosure is 103 mm in depth from the mounting surface, and suitable for mounting in a wall with two-
by-four construction.
• Rotating lock tabs permit the speaker to be temporarily fixed during installation. Also, the speaker has
provisions for wire or bolt suspension.
• The speaker can be converted to high-impedance applications with the addition of the optional MT-S0601
matching transformer.
4. HANDLING PRECAUTIONS
No anti-magnetic provisions have been made for the HB-1 speaker. Therefore, take care to keep the unit
sufficiently away from televisions, monitors or computer-related equipment.
5. NOMENCLATURE AND DIMENSIONS
430
544
32 103
352
520
[Front]
[Bottom]
[Side]
[Rear]
Front grille
Speaker
Detachable input connector
Hook clip
• Mounting bracket
(standard accessory)
(Unit: mm)