Toa SC-651 Specifications

SC-651
Paging Horn Speaker
DESCRIPTION
TOA's SC-651 Paging Horn Speaker, rated at 50W, is designed
especially for outdoor applications. The SC-651 speaker features
newly developed diaphragms employing special heat-resistant
polyimide film to prevent the diaphragm from absorbing moisture and
changing shape, as well as to improve the low frequency
characteristics. High speaker efficiency has also been realized by
minimizing the gap produced when the diaphragm bobbin is installed
in the magnetic circuitry slit.
The SC-651 features TOA's unique oval shape, which enhances
excellent speech clarity.
The mounting bracket, bracket holder and the horn flare are treated
with 50-micron thick powder paint coating, which is about three times
thicker than that of the conventional horns and external hardware
(screws, bolts, nuts) are made of stainless steel. All of these factors
combine to ensure the speaker's excellent weatherproofing and
corrosion resistance. In addition, the external horn flare is made of
aluminum which is more shock-resistant than resin.
FEATURES
• Newly developed polyimide diaphragm ensures durability during
50W output.
• Paging horn speaker for voice paging and tone signaling distribution
• Weather-Resistant to withstand demanding environmental conditions
• Shock-resistant aluminum oval horn
• IP65 standards compliant for dust and water-resistance
• Wide temperature range: -20°C to 55°C (-4°F to 131°F)
• Steel mounting brackets for easy installation and aiming in wall, pole
or ceiling-mount applications
APPEARANCE AND
DIMENSIONAL DIAGRAM
Rear View
430 (16.93")
3 (0.12")
Front View
3–ø11 (0.43")
206 (8.11")
51 (2.01") 51 (2.01")
Bracket dimensional diagram
SPECIFICATIONS
Rated Input: 50W (Mobil Mount use: 30W)
Rated Impedance: 16Ω
Sensitivity: 109dB (1W, 1m)
Frequency Response: 250 – 6,000Hz
IP Code: IP65
Polarity: Hot: Black, Com: White
Operating Temperature: -20°C to +55°C (-4°F to 131°F)
(must be free from dew condesation)
Finish: Horn flare: Aluminum, off-white, powder coating
Reflector horn: ABS resin, off-white
Bracket holder: Aluminum, gray, powder coating
Bracket: Steel, gray, powder coating
Rear cover: ABS resin, gray
Screws and bolts: Stainless steel
Speaker cable: Polyvinyl chloride insulated
cabtyre cable (6 mm (0.24") in diameter,
600 mm (23.62") in length)
430 (W) × 297.5 (H) × 327 (D) mm
Dimensions:
(16.93" × 11.71" × 12.87")
Weight: 3.4kg (7.50 lb)
TOA Corporation SC-651 1/2
16Ω
BLK
WHT
Wiring diagram
327 (12.87")
Side View
BLK WHT
Unit: mm