SM 28
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Làm việc, 8:30 - 17:30 Từ Thứ 2 đến thứ 6.The Extron SM 28 SpeedMount® Surface Mount Speaker is a two-way speaker with a patented, concealed wall mounting system. It features an 8" (203 mm) woofer with dual tuned ports and a 1.1" (28 mm) tweeter. The SM 28 provides a frequency range from 59 Hz to 22 kHz, and a power rating of 90 watts continuous pink noise, 180 watts continuous program capacity. The Extron-exclusive mounting system is designed to accommodate division-of-labor installations and save costs. The SM 28 is available as an 8 ohm model, and an SM 28T version which can operate in 8 ohm direct as well as 70 volt and 100 volt modes. The SM 28T features a six-position power tap selector for up to 64 watts, which can conveniently be accessed through the grille from outside the speaker.
Features
- Patented, concealed mounting system — One installation step connects the speaker to the wiring contacts, and secures it into place.
- Includes 0° mounting plate and 10° mounting adapter — Four position 10° mounting adapter attaches to 0° mounting plate, and provides flexibility for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right.
- Designed to accommodate division-of-labor installations and save costs
- 8" (203 mm) long-throw woofer with dual tuned bass reflex ports
- 1.1" (28 mm) silk dome tweeter
- Two versions available for low impedance or 70/100 volt systems:
- 8 ohm direct operation only
- 8 ohm direct and 70/100 volt operation - Convenient six-position, through-the-grille power tap selector on the SM 28T:
- 8 ohm direct
- 70 volt: 64, 32, 16, 8 watt, and Off selectable
- 100 volt: null, 64, 32, 16 watt, and Off selectable - Optional pivot mount allows for 360° of speaker rotation. Part # 70-978-02 and 70-978-03
- Optional Yoke Mount allows 180° of speaker pivot in 10° detented steps, part #70‑994‑02 and 70‑994‑03
- Frequency range: 59 Hz to 22 kHz
- 90 watts continuous pink noise
180 watts continuous program - Internal driver overload protection
- Hidden locking speaker release mechanism
- Mounting plate provides cable raceway access for surface-mounted wiring applications
- Black or white high-impact enclosure
- Dimensions with 0° mounting plate: 16.5" H x 11.5" W x 7.8" D (41.91 cm H x 29.21 cm W x 19.81 cm D)
Audio/acoustic and electrical | |
---|---|
Speaker type | 2-way, full range, indoor surface mount speaker |
Frequency range | 59 Hz to 22 kHz, -10 dB, full space (per IEC 60268-5) |
Frequency response | 67 Hz to 17.5 kHz, +/- 3 dB full space |
Power capacity | 90 W (rms) continuous pink noise (per IEC 60268-5) 180 W (rms) continuous program |
Rated maximum input voltage (MIV) | 25.1 V (78.9 W at 8 ohms) per AES2-2012) |
Maximum SPL | 108 dB, 1 m (based on MIV) 109 dB, 1 m (linear) |
Nominal sensitivity | 87 dB SPL, 1 W, 1 m, full space (per IEC 60268-5, 60 Hz to 20 kHz) |
Nominal coverage angles | Horizontal: 105° (1 kHz - 4 kHz, weighted 2 kHz - 4 kHz) Vertical: 60° (1 kHz - 4 kHz, weighted 2 kHz - 4 kHz) |
Nominal impedance | 8 ohms |
Crossover frequency | 2.0 kHz |
Rotary switch taps (SM 28T only) | 70 V: 64 W, 32 W, 16 W, 8 W, Off, 8 ohms direct 100 V: null, 64 W, 32 W, 16 W, Off, 8 ohms direct |
Woofer | (1) 8" (203.2 mm) polypropylene cone |
Tweeter | (1) 1.1" (28 mm) silk dome |
Overload protection | Full range power limiter protecting the tweeter, woofer, and crossover |
Input connectors | |
Speaker | 2 recessed pins (mate to receptacles on mounting plates) |
Mounting plate | (1) Euro-style captive screw terminal block, 4 pole |
General | |
Package | 2 speakers (1 pair) with mounting kit package |
Temperature/humidity | Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing |
Mounting | Wall mountable with included mounting plates |
0° mounting plate | Fixed 0° |
10° mounting adapter | Fixed 10° up, down, left, or right, based on orientation of adapter |
Yoke mount (optional) | Up to 90° upward/downward or left/right, in 10° steps based on orientation of yoke |
Enclosure type | Plastic, trapezoidal, with molded grille and bass reflex ports |
Enclosure outer dimensions | |
Speaker only | 16.50" H x 11.50" W x 7.28" D (41.91 cm H x 29.21 cm W x 18.49 cm D) |
With 0° mounting plate | 16.50" H x 11.50" W x 7.80" D (41.91 cm H x 29.21 cm W x 19.81 cm D) |
With 0° mounting plate attached to 10° mounting adapter | Orientation: vertical, angled 10° down 16.78" H x 11.50" W x 10.16" D (42.63 cm H x 29.21 cm W x 25.81 cm D) |
Product weight | |
SM 28 | |
Speaker only | 10.1 lbs (4.6 kg) each |
With 0° mounting plate | 10.9 lbs (5.0 kg) each |
SM 28T | |
Speaker only | 12.0 lbs (5.4 kg) each |
With 0° mounting plate | 12.8 lbs (5.8 kg) each |
Shipping weight | |
SM 28 | Pair: 30 lbs (14 kg) with mounting kit package |
SM 28T | Pair: 33 lbs (15 kg) with mounting kit package |
Regulatory compliance | |
Safety/EMI | CE |
Environmental | Complies with the appropriate requirements of RoHS and WEEE. |