Toa SF-30 User manual

TOA SPEAKER SYSTEM
CEILING MOUNT 3-WAY SPEAKER
SF-30
DESCRIPTION
The TOA SF-30 is a 3-way loudspeaker system designed to
be suspended from the ceiling. Its bass-reflex enclosure
houses a heavy-duty 12-inch woofer, a constant directivity
horn coupled with a high-efficiency compression driver, and
an exponential horn tweeter. The constant directivity horn
ensures a uniform dispersion pattern of 90° horizontal and
40° vertical.
A high-tech crossover network of – 18 dB/octave slope is
used between the woofer and the driver. This combination
produces an extended, smooth frequency response and
wide coverage area. The system will handle 120W RMS of
continuous pink noise and 360W of continuous program
material.
The rear panel has 1/4” phone jacks and screw-type termi-
nals for full-range operation. The phone jacks can be con-
verted into XLR connectors. Mid and high frequency level
controls are provided on the side of the speaker enclosure.
T-nuts for ceiling suspension mount brackets are provided
on the rear slant and on both sides of the enclosure. The
enclosure is finished in gray polyester. The black punched
metal front grille is removable.
FEATURES
l Three-way vented system with 12” (30 cm) heavy-duty
woofer and exponential horn tweeter.
l 120W RMS continuous pink noise and 360W continuous
program material.
l Constant directivity horn with high-efficiency compression
driver for 90° horizontal x 40° vertical coverage.
l High efficiency converts amplifier power into more sound
volume.
l Level controls for mid and high frequencies located on side
of enclosure.
l 1/4” phone jacks and screw type input terminals for full-
range operation.
l 1/4” phone jacks can be converted into XLR connectors.
l T-nuts for ceiling suspension provided on rear slant and
both sides of enclosure.
l Removable punched metal front grille.

SPECIFICATIONS
Enclosure Vented(bassreflex)type
Crossover Frequencies 1 kHz, 8 kHz
Crossover Slope 1 kHz; 18 dB/Oct.
8 kHz: 12 dB/Oct.
Speakers
Low Frequency
12"woofer,2.83"(72mm)edge-wound
copper ribbon voice coil, Aluminum diecast
Mid and High Frequencies
Level Controls
0 to -10 dB (with an “OFF” position)
Mid Frequency
High Frequency
construction
CD horn plus compression driver. duralumin
diaphragm
Horntweeter,duralumindiaphragm
Input Terminals Two1/4 "phone jacksand screwtype, bothfor
full-range
Power Handling Capacity
Continuous Pink Noise
Continuous Program
120wattsRMSofband-limitedpinknoise
(50 Hz to 20 kHz, 24 Hours)
360 watts
Enclosure Materials
and Finish
MidiumDensityFiberboard,Polyesterin
graycolor
Dimensions 25.0 (H) x 15.3 (W) x 13.7 (D) inches
636 (H) x 388 (W) x 347 (D) mm
Nominal Impedance
Sensitivity
8ohms
100 dB (1W/1 m, Band-limited pink noise,
250Hz to2.5 kHz)
Weight 61.7 Ibs (28 kg)
Standard Accessories
Optional Accessories
8rubberpiecesforT-nutholes
HY-30,HY31CeilingMountingBracket
Frequency Response
70 Hz to 20 kHz
Box Tuning Frequencv 62 Hz
*Specifications are subject to change without notice
APPEARANCE AND DIMENSIONAL DIAGRAM
OPTION
HV-30 Adjustable Ceiling Mount Bracket for Use
with the HY-31
*Mounting angle is adjustable 360° horizontal and ± 10
o
vertical 40° angle shown in the figure.
j Ceiling Mount Bracket
k
Speaker Mount Bracket
l
Vertical Adjustment Bolts
m Horizontal Adjustment Nut
n Safety Bolt
j Enclosure
k Woofer
l Mid-range (CD Horn)
m Tweeter
n High frequency level control
o Mid frequency level control
p Inputpanel
q Mountingnuts
r Punched metal grille
INPUT PANEL
HY-31 Mount Bracket for Use with HY-30
* T-nuts for ceiling suspension are provided on the rear slant
and both sides of the SF-30 enclosure, permitting it to be
readily suspended from the ceiling when used with the
HY30 and HY31.
Screw terminal
The screw type terminals are connected in parallel with the
1/4 " phone jacks. Two 1/4 " phone jacks can be converted
into XLR connectors by removing mounting panel and
installing XLR connector.
LEVEL CONTROLS
MID FREQUENCY LEVEL CONTROL
FREQUENCY LEVEL CONTROL
Separate level controls are provided for mid and high
frequencies.
Make the level setting according to the environmental
conditions, although almost flat frequency response is
obtainable as long as the level controls remain within the
“NORMAL” ranges.

CHARACTERISTIC DIAGRAMS
Directivity Factor vs Frequency
Beamwidth vs Frequency
Frequency Response
(1W/1 m: 1/3 Octave Pink Noise)
20 50 100 200 500 1k 2k 5k 10k 20k Hz
Frequency
POLAR RESPONSE (1W/4m 1/3 Octave Pink Noise)
500Hz
1kHz
2kHz
—Horizontal —Horizontal —Horizontal
----Vertical
- - - -Vertical
----Vertical
4kHz
—Horizontal
----Vertical
8kHz
16kHz
—Horizontal —Horizontal
----Vertical ----Vertical

TOA Corporation
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