Toa AC-F1 Manuel utilisateur

TOA PROFESSIONAL SOUND SYSTEM

ELECTRONICALLY CONTROLLED SPEAKER SYSTEM

SR-F1A

Speaker System

SR-L1A

Sub Woofer System

AC-F1/AC-L1

Electronic Control Units

AC-F1

SR-L1A

AC-L1

DESCRIPTION

The TOA SR Loudspeakers are compact integrated

speaker systems made for quality sound reproduction and

easy transportation.Both SR-F1A and SR-L1A are used

with AC-F1/AC-L1 Electronic control units, and work

together to cover the low/high and super-low frequency

range. The AC-F1 and AC-L1 provide a frequency divider,

equalization, correction for component time offset, phase

correction, an active clipping limiter, and a crossover select

switch for SR-F1A ceiling mounting.

The SR-F1A uses the high-power HFD-651 driver and an

LE Series constant directivity horn. Its trapezoidal cabinet

allows arrays to simulate a coherent wavefront single point

source, and its angle of 15° on both sides reduces mutual

high-frequency interference in tightly clustered designs.

The SR-L1A has computer-tuned bass-reflex ports, and two

38cm (15”) woofers with a 72mm (2.8”) diameter voice coil.

Two metal suspension points are on both the top and

bottom, and the rugged APITON plywood enclosure is

finished with shock-resistant FRP (fiber-reinforced plastic).

Neutrik NL4MPR quick connectors are used for both the

SR speakers,

FEATURES

SR-F1A Speaker System

1. Full-range speaker with control by AC-F1 Electronic

Control Unit.

2. High power capacity of 120W continuous pink noise for

low frequency and 80W for high frequency.

3. 30cm (12”) woofer with 20cm (7.9”) magnet.

4. HFD-651 high power compression driver with LE Series

constant directivity (CD) horn (60° horizontal by 40°

vertical dispersion).

5. Aeroquip aircraft-type hanging fixture attachment

points provided on enclosure top and bottom.

6. Enclosure side angle is 15° on both sides to prevents

mutual horn high-frequency interference.

7. Neutrik NL4MPR input connector.

8. APITON plywood enclosure with rugged FRP coating.

9. Removable punched metal front grille.

SR-L1A Sub Woofer System

1. Sub-woofer with control by AC-L1 Electronic Control

Unit.

2. High power capacity of 300W continuous pink noise.

3. Ultra-linear, high power 38cm (15”) woofers.

4. Bass-reflex enclosure computer-tuned to optimal

conditions.

5. Neutrik NL4MPR input connector.

6. APITON plywood enclosure with rugged FRP coating.

7. Removable punched metal front grille.

SPECIFICATIONS SPECIFICATIONS

Model No.

Enclosure

SR-F1A

Bass Reflex Type

Speaker

Low Frequency

High Frequency

One 30cm (12”) dia. cone speaker

CD horn (60° horizontal by 40° vertical) plus

compression driver

Nominal impedance

Sensitivity

Low frequency: 8 ohms,

High frequency: 16 ohms

Low frequency: 98dB (1W/1m),

High frequency: 110dB (1W/1m)

Frequency Response

Crossover Frequency

70-20kHz, with AC-F1’s use

1kHz with AC-F1’s use

Power Handling Capacity

Low Frequency

Continuous pink noise: 120W RMS (Band-limited

50Hz-1kHz),

High Frequency

Continuous program: 360W

Continuous pink noise: 8OW RMS (Band-limited

1kHz-20kHz),

Continuous program: 240W

Input Connector

Neutrik NL 4MPR

Enclosure Material

APITON plywood

Weight

38kg (83.8lbs.)

Dimensions

390(W) x 619(H) x 362(D)mm

[15.4(W) x 24.4(H) x14.3(D) inches]

Finish

Enclosure: FRP coating in gray,

Front grille: Black-painted

DIMENSIONAL DIAGRAM

SR-F1A

SR-L1A

INPUT CONNECTOR

Input connector is the Neutrik NL4MPR.

Each contact number is connected as per the following table:

Contact number

*Woofer direction viewed from the front.

Model No.

SR-L1A

Enclosure

Bass Reflex Type

Speaker

Two 38cm (15”) dia. cone speakers

Nominal Impedance

8 ohms x 2

Sensitivity

96dB (1W/1m)

Frequency Response

35Hz-1kHz

Crossover Frequency

Power Handling Capacity

125kHz with AC-L1's use

Continuous pink noise: 300W RMS (Band-limited

40Hz-1kHz),

Continuous program: 900W

lnput Connector

Neutrik NL 4MPR

Enclosure Material

APITON plywood

Weight

81 kg (178.6lbs.)

Dimensions

829(W) x 629(H) x 602(D)mm

[32.6(W) x 24.8(H) x 23.7(D) inches]

Finish

Enclosure: FRP coating in gray,

Front grille: Black-painted

CONNECTION DIAGRAMS

1. Single system(SR-F1A)

2. Combination system (SR-F1A and SR-L1A)

Note:

Refer to "Electronic control unit’s operating instructions” on

the mode settting of the

electronic

control unit

and the level setting of power amplifier

Sale to use power amplifier 300W (8 ohms) or more output

Do not connect two speakers or more in parallel, or BTL connection of power amplifier

BLOCK DIAGRAM

Applicable cable connector is NL4FC.

CHARACTERISTIC DIAGRAMS (1/3 Octave Pink Noise)

Frequency Response

(1W/1m, at 300Hz)

SR-F1A (with AC-F1 electronic control unit’s use)

Frequency Response

(1W/1m, at 100Hz of crossover IN)

SR-L1A (with AC-L1 electronic control unit’s use)

General Frequency Response

(1W/1m at 300Hz of the SR-F1A)

SR-L1A + AC-L1, SR-F1A + AC-F1, AC-L1: Crossover OUT

Beamwidth vs. Frequency

SR-F1A

Directivity Factor vs. Frequency

SR-F1A

Polar Response

(1W/4m: 1/3 Octave Pink Noise)

SR-F1A

Architect’s and Engineer’s Specifications

The two way high/low speaker system shall be a TOA SR-F1A, and the

sub-woofer system shall be a TOA SR-L1A, or approved equivalents. The

system shall be vented bass-reflex enclosures intended for portable system

applications, made of APITON plywood with FRP (fiber reinforced plastic)

finish and a punched metal front grille. Input connections shall be via a

Neutrik NL4MPR connector.

The SR-F1A shall combine a low-frequency 30cm (12”) diameter/98dB

sensitivity cone speaker and a compression-driver equipped high-

frequency CD horn with 60° horizontal by 40° vertical dispersion and 110dB

sensitivity. Its power handling capacity shall be 120W RMS continuous pink

noise, band-limited to 50Hz-1kHz (low frequency), and 80W RMS

continuous pink noise, band-limited to 1 kHz-20kHz (high frequency).

The speaker shall weigh 38kg (83.8lbs.) and have dimensions of 390(W) x

619(H) x 362(D)mm [15.4”x 24.4”x 14.3"].

The sub-woofer system SR-L1A system shall have two 38cm (15”) diameter

cone speakers and 96dB sensitivity. Frequency response shall be 35Hz-

1kHz. Its power handling capacity shall be 300W RMS continuous pink

noise, band-limited to 40Hz-1kHz. The speaker system shall weigh 81 kg

(176.8lbs.), and have dimensions of 829(W) x 629(H) x 602(D)mm [32.6”x

24.8”x 23.7”].

The electronic control unit for the SR-F1A and SR-L1A shall be the AC-F1

and AC-L1 respectively. When the AC-F1 is used, the frequency response

of the SR-F1A shall be 70Hz-20kHz, with a crossover frequency of 1kHz.

The AC-L1 shall provide the 125Hz crossover frequency for the SR-L1A.

Both electronic control units shall provide a crossover network with horn

equalization, component time offset correction, phase correction, an active

clipping limiter, and a crossover switch used when the SR-F1A is ceiling-

mounted.

AC-F1/AC-L1 Electronic Control Units

FEATURES

1. Individual limiters that prevent speaker damage due to

overdriving or power amplifier clipping.

2. Dynamic equalization reduces the gain of the most ear-

sensitive frequencies (3kHz-4kHz) when the sound

pressure level is extremely high, for a smoother dynamic

sound.

3. Time offset correction.

4. Crossover network at 1kHz.

5. Phase correction throughout crossover region.

6. Horn equalizer compensates for constant directivity

horn characteristics.

7. Crossover curve selection switch for speaker ceiling

suspension (AC-L1).

8. For exclusive use with SR-F1A (AC-F1) and SR-L1A

(AC-L1)

9. Each unit occupies one standard EIA 19”rack space.

10. Electronically-balanced input and output employing

XLR connectors. (No. 3: HOT)

AG-L1

AC-F1

DIMENSIONAL DIAGRAMS

SPECIFICATIONSSPECIFICATIONS

Model No.

AC-F1

Model No.

Input

Input Impedance

Rated Input Level

Max. Input Level

Sense Input

Sense Input Impedance

output

Output Impedance

Rated Output Level

Max. Output Level

Crossover Frequency

Distortion

Hum & Noise

Indicators

Front Panel Operation

Rear Panel Operation

Power Requirement

Power Consumption

Weight

AC-L1

Input

Input Impedance

Rated input Level

Max. Input Level

Sense Input

Sense Input Impedance

output

Output Impedance

Rated Output Level

Max. Output Level

Crossover Frequency

Distortion

Hum & Noise

indicators

Front Panel Operation

Power Requirement

Power Consumption

Weight

Electronically balanced

(Cannon XLR-3-31 or equivalent) Electronically balanced

(Cannon XLR-3-31 or equivalent)

20k ohms (Balanced), 10k ohms (Unbalanced) 20k ohms (Balanced), 10k ohms (Unbalanced)

+ 4dB* (Pin No.3: HOT No.2: COLD and No.1: GND)

+ 4dB* (Pin No.3: HOT, No.2: COLD and No.1: GND)

+ 26dB* + 26dB*

Electronically balanced (4P screw

terminal)

Electronically balanced (2P screw terminal)

10k ohms

Electronically balanced

(Cannon XLR-3-32 or equivalent)

600 ohms (Balanced)

+ 4dB*

10k ohms

Electronically balanced

(Cannon XLR-3-32 or equivalent)

600 ohms (Balanced)

+ 4dB*

+ 26dB* (Balanced), + 20dB* (Unbalanced)

1kHz

+ 26dB* (Balanced), + 20dB* (Unbalanced)

125Hz

Less than 0.05% (+ 4dB* 1 kHz) Less than 0.05% (+ 4dB* 1kHz)

Less than - 90dB* (20Hz ~ 20kHz) Less than - 90dB* (20Hz ~ 2OkHz)

-Power. green LED

-Sense input: green LED (LOW SENSE)

-Limit: red LED (LOW LIMIT)

-Power green LED

-Sense input. green LED

(LOW SENSE, HIGH SENSE)

-Limit: red LED (LOW LIMIT, HIGH LIMIT)

-Dynamic Equalizer green LED (D.EQ)

Low level control, Power switch

Crossover select switch

Input Level control, Power switch AC Mains. 50Hz/60Hz

AC Mains, 50Hz/60Hz 10W 120V version, 12W 220V-240V version

3.7kg (8.16lbs.)

12W 120V version. 16W 220V--240V version

3.7kg (8.16lbs.)

*OdB=0.775Vrms

TOA Corporation

Specifications are subject to change without notice

Printed in Japan (209) 833-64-521-8A

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