During the unprecedented impact of COVID-19 we have reduced both staff and hours of operation. Because of this, all calls may not be answered. For all technical support related inquires we encourage you to email service@martinlogan.com and sales@martinlogan.com for sales inquiries. Please expect a slightly longer response time than usual. Thank you for your understanding during this time.


Installer Series is our affordable high-performance lineup, featuring custom installation solutions for in-wall, in-ceiling, 5.1 home theater systems, and outdoor applications. Titanium dome tweeters and mineral-filled polypropylene drivers ensure great performance, while fully sealed, mineral-filled reinforced enclosures provide protection from harsh weather elements. All models have water & UV-resistant aluminum grilles, stainless steel & polymer mounting brackets, brass hardware, and gold-plated binding posts for superior toughness.

Launched in 2011

Price when discontinued:



Specifications are subject to change without notice

Frequency Response

85–20,000 Hz ±2dB


Swivels on U-Bracket

Recommended Amplifier Power

20‒120 watts per channel


90 dB/2.83 volts/meter


Compatible with 8 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers.

Crossover Frequency

2300 Hz

High Frequency Transducer

1" (2.5cm) titanium dome

Low Frequency Transducer

5.5" (14cm) mineral-filled polypropylene cone


5-way binding posts accommodate wire up to 5AWG


6.75 lbs. (3.05 kg)


9.75" × 7" × 6.875"
(24.7cm × 17.8cm × 17.5cm)

Customer Reviews For ML-55

Please, Sign in or Sign up to add comments.