McIntosh LS330

The McIntosh LS330 is a 3-way floorstanding loudspeaker from the company’s solid-state era. Documentation on it is thin. The amplifiers and tuners that built McIntosh’s reputation are well covered, but the LS330 shows up mostly as spec-sheet entries in equipment databases. What the record shows is a high-power-handling speaker: a single 10-inch woofer (part no. 160B-3A07), a 3-inch midrange (075-4610), and a 1-inch tweeter (052-4554), crossed over at 400 Hz and 4 kHz. It presents a 4-ohm load and is rated for amplifiers from 50 to 400 watts. That wide window suggests McIntosh expected it to be paired with their solid-state amps.

Measured performance is respectable but not exceptional for its class: frequency response of 46 Hz to 20 kHz (±3 dB) and a sensitivity of 91.5 dB (2.83 V/m). The cabinet measures 22-7/8″ × 15-1/16″ × 11-9/16″ and weighs 44 lb (20 kg). A period listing in HiFI-Stereo (May 1994, p.48) describes the cabinet as medium-density fiberboard veneered in either walnut or black ash, with extensive internal bracing to reduce resonance and coloration.

A lot is missing. There are no production years, no original price, and nothing on where the LS330 sits relative to other McIntosh speakers of the period. It appears to have been a relatively brief entry in the catalog, overshadowed by the brand’s electronics. For collectors it remains a niche item - a McIntosh speaker with the expected build quality, but without the documentation and following of the XR series. Verified specs are scarce, and condition will matter more than provenance.

• Type: 3-way floorstanding loudspeaker
• Drivers: 1 × 10″ woofer (160B-3A07), 1 × 3″ midrange (075-4610), 1 × 1″ tweeter (052-4554)
• Crossover: 400 Hz, 4 kHz
• Impedance: 4 ohms
• Recommended power: 50–400 W
• Frequency response: 46 Hz–20 kHz (±3 dB)
• Sensitivity: 91.5 dB (2.83 V/m)
• Dimensions (H×W×D): 22-7/8″ × 15-1/16″ × 11-9/16″
• Weight: 44 lb (20 kg)

eBay Listings

McIntosh LS330 & LS350 Vintage Photo

$19.00

McIntosh XRT26 & LS350, LS330, LS310 Literature

$25.00

McIntosh LS330 Loudspeaker System ORIGINAL Owner’s Manual

$24.95

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