SM 300

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Overview

During summer 2010 we set ourselves a challenging task - that of designing a high quality active loudspeaker that would combine the detailing of the award winning SM 100Ak with the dynamics and bandwidth of the SM 200Ak. Additionally, the size would have to be very compact since the target user would place it on a console or desktop. Many design debates, prototypes, and user reviews later, we are delighted to present the SM 300, our first 3 way tri-amplified reference monitor.


The key features in this new monitor are:



  • A compact cabinet which has double MDF top, bottom, front and rear; and aluminum extruded sides. Unique, and exceptionally rigid. 

  • The HF and MF transducers are housed in a separate aluminum die-cast plate, designed for controlled dispersion and linearity 

  • 3 AB Class amplifiers rated at: 150, 75, 75 watt that drive the 8" kevlar LF, 4" kevlar MF, and 1" silk dome tweeter respectively 

  • 2 shelving EQs for LF and HF, 1 bell EQ for MF, 2 Bass Roll Offs at 80, 100 Hz to compensate for room modes and for optimizing off axis response

Highlights

  • 3 way trimaplified speaker
  • Aluminum - MDF hybrid rigid enclosure
  • Kevlar woofer and midrage
  • Custom waveguide for HF
  • 3 EQs
  • High in details and dynamics

Specifications

DESCRIPTION 3 way active studio monitor
ENCLOSURE Sides: Extruded aluminium, Top/bottom/front/rear: MDF, vented
TRANSDUCER COMPLEMENTS: HF Magnetically shielded 25mm silk dome tweeter
TRANSDUCER COMPLEMENTS: MF Magnetically shielded 4" kevlar cone midrange
TRANSDUCER COMPLEMENTS: LF Magnetically shielded 8" kevlar cone woofer
AMPLIFIER POWER BEFORE CLIPPING LF: 150 W, MF: 75 W, HF: 75 W
AMPLIFIER THD AT RATED POWER < 0.1%
MAX SPL @ 1M 116 dB
OVERALL FREQUENCY RESPONSE (+/-2 dB) 40 Hz ~ 22 kHz
USABLE FREQUENCY RANGE (-10 dB) 35 Hz ~ 27 kHz (-10 dB)
CROSSOVER FREQUENCY 400 Hz, 4 kHz
CMRR > 70 dB
INPUTS Fully balanced XLR socket with link
INPUT LEVEL FOR 90 dB SPL @ 1M +6 dBu, with gain at mid position
CONTROLS Front: 2 bass roll-off DIP switches - 80 Hz & 100 Hz
PROTECTION Overcurrent, overheat, RFI, switch-on/off transients
INDICATOR Power ON /OFF
GAIN CONTROL RANGE -20 dB ~ +8 dB
HIGH SHELVING EQ 4 kHz ~ 20 kHz, -3 dB to +3 dB in 0.75 dB steps
LOW SHELVING EQ 50 Hz ~ 250 Hz, -3 dB to +3 dB in 0.75 dB step
BASS ROLL-OFF 2 bass roll-off DIP switches: 80 Hz and 100 Hz
SIGNAL TO NOISE RATIO (AT UNITY GAIN) > 95 dB, referred to full output
FINISH Black painted
COLOURS Black
DIMENSIONS (HxWxD) mm 300 x 508 x 295
POWER CONSUMPTION 480 VA max
POWER REQUIREMENT Two versions: 230 V AC and 120 V AC, +/- 10%
NET WEIGHT 25 kg
MOUNTING OPTIONS 4 x M6 inserts on bottom plate

* All specifications are subject to change due to continuous improvements

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