Toa SF-30 Manuel utilisateur

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

Three-way vented system with 12” (30 cm) heavy-duty

woofer and exponential horn tweeter.

120W RMS continuous pink noise and 360W continuous

program material.

Constant directivity horn with high-efficiency compression

driver for 90° horizontal x 40° vertical coverage.

High efficiency converts amplifier power into more sound

volume.

Level controls for mid and high frequencies located on side

of enclosure.

1/4” phone jacks and screw type input terminals for full-

range operation.

1/4” phone jacks can be converted into XLR connectors.

T-nuts for ceiling suspension provided on rear slant and

both sides of enclosure.

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)

15.3

(W)

13.7 (D)

inches

636

(H)

388

(W)

347

(D)

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

vertical 40° angle shown in the figure.

j Ceiling Mount Bracket

Speaker Mount Bracket

Vertical Adjustment Bolts

m Horizontal Adjustment Nut

n Safety Bolt

Enclosure

Woofer

Mid-range (CD Horn)

Tweeter

High frequency level control

Mid frequency level control

Inputpanel

Mountingnuts

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

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

PrintedinJapan833.64.511.3A

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