Toa AC-F1 User manual

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)
l SR-F1A (with AC-F1 electronic control unit’s use)
Frequency Response (1W/1m, at 100Hz of crossover IN)
l SR-L1A (with AC-L1 electronic control unit’s use)
General Frequency Response (1W/1m at 300Hz of the SR-F1A)
l SR-L1A + AC-L1, SR-F1A + AC-F1, AC-L1: Crossover OUT
Beamwidth vs. Frequency
l SR-F1A
Directivity Factor vs. Frequency
l SR-F1A
Polar Response (1W/4m: 1/3 Octave Pink Noise)
l 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
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
l Specifications are subject to change without notice
Printed in Japan (209) 833-64-521-8A