At Boston Acoustics we wanted as many people as possible to experience the ownership of a genuine masterpiece. That’s why we developed the entry-level M 250 floor-stander. A two-way speaker equipped with a 1-inch EWB soft dome tweeter, a 51/4-inch (13.3 cm) mid-range driver, and a 51/4-inch (13.3 cm) woofer … everything you need to release the full power, glory and splendour of your music collection.
Unique EWB soft dome tweeter for Extended Wide Bandwidth
All floorstanding and bookshelf speakers incorporate the highly-acclaimed EWB soft dome dome tweeter. This completely opens up the mid-high to high frequency ranges to create an almost infinitely wide, sky-high sound stage. It’s an Extended Wide Bandwidth effect that is totally unique to Boston Acoustics.
All m-series models are framed by a doublelayer side panel. Each of the two layers is 10 mm thick, and sandwiched between them is the Boston acoustics specially-developed SDG damping elastomer. This absorbs the internally generated vibration and ensures that the speaker cones remain autonomous. So absolutely nothing is added to the music, and absolutely nothing is taken away.
If the drivers are the heart, and the cabinet the body, the crossover is the soul of the speaker. The crossover is an electronic circuit that directs the appropriate sound range to each transducer and maintains the phase/timing accuracy between all of the transducers. All the parts in the crossover - resistors, capacitors, inductors – have an effect on the sound, and choosing the right parts will deliver the sound that the system is truly capable of. Special elements such as low loss film capacitors and low distortion laminated silicon steel core inductors have been used at all critical areas. On the M-Series location of the components relative to each other is optimize, to minimize electromagnetic interaction that could degrade the sound. On the M 350 and M 340 the entire woofer crossover network is located on a separate board to eliminate the potential of stray fields from the large inductors on the woofer network from cross-talking with components in mid/high frequency crossover network.
Laser-based vibration measuring has helped define the exact, optimised position for each cabinet’s internal bracing and mounting locks. This ensures that negative resonances are not just shifted to other frequencies but are totally minimised.
Frequency Range (±3dB):
60Hz – 30kHz
2,5 cm EWB Dome
Nominal (Min) Impedance:
4 (3,6) ohms
Recommended Amplifier Power:
Dimensions (H x W x D):
97,6 x 24,5 x 25cm
High Gloss Black