OPERATING INSTRUCTIONS LINE ARRAY SPEAKERS SR-S4L SR-S4S EXTENSION PLATE (optional) SR-EP4 PROTECTION PAD (optional) SR-PP4 SR-S4S SR-S4L Thank you for purchasing TOA's Line Array Speakers and their associated products. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ............................................................................................ 3 2. GENERAL DESCRIPTION .......................................................................................... 5 3. FEATURES ...................................................................................................................... 5 4. COVERAGE AREA ....................................................................................................... 6 5.
1. SAFETY PRECAUTIONS • Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation. • Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety. • After reading, keep this manual handy for future reference.
CAUTION Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage. When Installing the Unit • Avoid placing the unit in a doorway or other high traffic area as people may trip on the equipment and cords, or be injured by falling objects. • Avoid touching the unit's sharp metal edge to prevent injury. • When installing the speaker at head height, attach the optional SR-PP4 Protection Pad to the bottom of the speaker.
2. GENERAL DESCRIPTION Featuring slim construction, the SR-S4 series are 2-way line array speakers containing 32 speaker elements. The sound source speaker elements are vertically arranged in close proximity to each other, and form a continuous linear sound source, achieving uniform sound pressure with less attenuation due to distance.
4. COVERAGE AREA The line array speaker radiates a sound only within a limited range. Since sound is reduced in areas that are outside the range, take care that the listening area is sufficiently covered when installing the speaker. • Correct installation examples [SR-S4L x 2] [SR-S4S] [SR-S4L + SR-S4S] • Incorrect installation examples If the speaker is installed high above the floor facing horizontally or diagonally downward at a large angle, the listening area cannot be covered sufficiently.
5. DIMENSIONAL DIAGRAM 5.1. Line Array Speaker SR-S4L Unit: mm 160 100 50 [Side] [Rear] 60 [Front] 30 255 Blank panel (The optional MT-S0601 Matching Transformer can be installed inside.) Input terminal panel 100 50 30 60 895 60 60 60 60 5.2. Line Array Speaker SR-S4S Unit: mm 160 100 50 [Rear] 87 ゜ 60 [Side] Blank panel (The optional MT-S0601 Matching Transformer can be installed inside.
6. SINGLE-AMPLIFIER DRIVE AND BI-AMPLIFIER DRIVE The SR-S4 series speakers are factory-preset to be driven by a single amplifier, however this setting can be changed to a bi-amplifier drive system by changing the speaker's internal wiring. (See p. 12; Changing Single-Amplifier Drive to Bi-Amplifier Drive System.) • Single-amplifier drive Note: Use a digital processor as required.
8. CHANGING TO HIGH IMPEDANCE The SR-S4 series speakers can be used for high-impedance applications with the installation of the optional MT-S0601 Matching Transformer. To install the MT-S0601 transformer, remove the blank panel located on the speaker's rear panel. For details regarding mounting procedures, refer to the instruction manual enclosed with the MT-S0601. SR-S4L/S4S Rear panel Note The speaker cannot be used in combination with the matching transformer when driven by a bi-amplifier.
9. JOINING SPEAKERS Joining line array speakers configures a longer linear sound source, permitting richer low-frequency sound reproduction as well as transmission of higher sound output over a longer distance. To join speakers, use the optional SR-EP4 Extension Plate. [Joining procedure] Step 1. Remove the (M5 oval-head) screws on both sides of the speaker. The removed screws are no longer used. Step 2. Join 2 speakers using the SR-EP4 Extension plate.
10. ATTACHING THE PROTECTION PAD TO THE SPEAKER EDGE WARNING When installing the speaker at head height, attach the optional SR-RP4 Protection Pad to the speaker edges. If people should bump their heads directly against the corners or edges of the enclosure, injuries could result. Remove the protective paper of the double-faced tape affixed to the SR-PP4 Protection Pad (optional) and attach the pad to the speaker edge as shown in the figure.
11. CHANGING SINGLE-AMPLIFIER DRIVE TO BI-AMPLIFIER DRIVE SYSTEM The single-amplifier drive system can be changed to a bi-amplifier drive system by changing the speaker's internal wiring after removing the input terminal panel located at the back of the speaker. [How to change] Step 1. Remove the 4 terminal panel mounting screws to remove the input terminal panel. Step 2. Carefully pull out the short length of wiring connected to the back of the input terminal panel. Step 3.
12. INTERNAL WIRING DIAGRAM FOR THE BI-AMPLIFIER DRIVE SYSTEM The diagram below is an internal wiring after the speaker's drive system is changed to a bi-amplifier system. Screw terminals LOW + LOW – Woofers Neutrik NL4MP connector 1+ 1+ 2– 1– 2– 1– x4 HIGH + HIGH – 2+ 2+ Tweeters Input terminal panel x4 • Since the Neutrik NL4MP connectors and screw terminals are internally connected in parallel, either one can be used for connection.
13. DIGITAL PROCESSOR FILTERING 13.1. Single-Amplifier Drive (Factory-Setting) Although the speaker can be operated without a digital processor, it is recommended that the speaker be used in conjunction with a digital processor for better sound reproduction. Recommended setting parameters are as follows. TYPE HPF (12 dB) PEQ Frequency 60 Hz 16 kHz Gain – 5 dB Q 1.226 1.414 13.2. Bi-Amplifier Drive Digital processing is required after the drive system has been changed to bi-amplifier operation.
14. SPECIFICATIONS 14.1. Line Array Speaker SR-S4L, SR-S4S Model No.
14.2. Extension Plate SR-EP4 (optional) The SR-EP4 is used to join multiple SR-S4L or SR-S4S speakers. One complete set consists of 2 brackets. Number of Speaker to be Jointed Finish Dimensions Weight Max. 3 (when using 2 sets of SR-EP4) Steel plate, white, paint 140 (w) x 220 (h) x 2.3 (t) mm 1.1 kg (including accessories) Note: The design and specifications are subject to change without notice for improvement. • Accessories Hexagon head bolt M5 x 20 with washer .......... 16 14.3.
