A 112A - Loudspeaker DYNACORD - Free user manual and instructions

Product Type	Powered two-way full-range loudspeaker
Model	A 112A
Woofer	1 x EVS-12K, 305 mm (12")
HF Driver	DH-1K, 39 mm (1.5") titanium diaphragm compression driver
Amplifier Type	Class D, dual-channel (bi-amping)
Maximum Amplifier Output (Peak)	500 W
Amplifier Power RMS	420 W
Maximum SPL (1 m, calculated)	121 dB
Frequency Range (-10 dB)	55 Hz – 17 kHz
Frequency Response (-3 dB)	65 Hz – 16 kHz
Coverage Angle (H x V)	90° x 50°
Crossover Frequency	1.7 kHz
Digital Signal Processing	28/56-Bit, 48 kHz, FIR filter technology
Audio Inputs	LINE 1: XLR/TRS combo; INPUT 2: XLR/TRS combo (switchable mic/line); AUX: Stereo RCA
Audio Output	LINK OUTPUT: XLR balanced (selectable LINE 1 or MIX)
Controls	Volume, INPUT 1 Level, INPUT 2 Level, SELECT (LINE 1/MIX), MAIN/MONITOR, FULL RANGE/LO-CUT, Power switch
Indicators	LIMIT LED (power amp limit), Power switch light
Power Requirement	220-240 V AC / 100-120 V AC, 50-60 Hz, 0.6 A / 1.0 A
Safety Class	I (protective earth connection)
Enclosure Material	15-mm multi-ply wood with black textured paint
Grille	18-GA steel with black powder coat
Dimensions (W x H x D)	607 mm x 362 mm x 340 mm
Net Weight	16.8 kg
Shipping Weight	21.9 kg
Handles	1
Operating Temperature Range	0 °C to 40 °C
Included Accessories	Mains cord, Owner's manual, Warranty certificate
Optional Accessories	Dust cover SH-112A, speaker pole VPM 1500, speaker stand BS 35
Cleaning	Clean only with a dry cloth
Warranty	Visit www.dynacord.com for warranty information

Frequently Asked Questions - A 112A DYNACORD

What is the maximum SPL of the Dynacord A 112A?

The maximum SPL (1 m, calculated) is 121 dB.

What type of amplifier does the A 112A use?

It uses a Class D dual-channel power amplifier (bi-amping) with 500 W peak power and 420 W RMS.

How do I set up the A 112A as a main PA speaker?

Place the speaker on a pole stand at about 1.8 m height. Connect a mixer to LINE 1 via XLR cable. Set LEVEL and VOLUME to 0 dB, select FULL RANGE and MAIN. Power on the mixer first, then the speaker. Adjust levels from the mixer.

Can the A 112A be used as a floor monitor?

Yes. Set the speaker mode switch to MONITOR to activate optimized DSP for floor monitoring. The cabinet has a 60° monitor angle for this purpose.

How do I daisy-chain multiple A 112A speakers?

Use the LINK OUTPUT (XLR) to connect to the next speaker's input. Set the SELECT switch to MIX to send the mixed signal of both input channels to the link output, or to LINE 1 to pass only the LINE 1 signal pre-fader.

What is the LO-CUT switch for?

When using the A 112A with a subwoofer that does not have a low-cut output, set LO-CUT to activate a 100 Hz high-pass filter. This prevents the full-range speaker from reproducing low frequencies that are better handled by the subwoofer.

What are the audio input options on the A 112A?

It has two combo XLR/TRS inputs: LINE 1 (line level only) and INPUT 2 (switchable between line and mic level). Additionally, there is a stereo RCA AUX input. All inputs are summed internally.

How does the LIMIT indicator work?

The LIMIT LED lights when the amplifier reaches its power limit. Occasional blinking is normal due to the DSP clip limiter preventing distortion. Continuous lighting indicates the input level should be reduced to avoid sound degradation. It may also light when the amplifier is overheated.

What should I do if the A 112A overheats?

The amplifier will automatically shut down to protect itself. Ensure adequate cooling and shade. The operating temperature range is 0°C to 40°C. Allow the speaker to cool down before resuming use.

Does the A 112A have any user-serviceable parts?

No. Refer all servicing to qualified personnel. The rear panel acts as a heat sink and may be hot during operation. Do not attempt to open the unit or perform any internal maintenance.

USER MANUAL A 112A DYNACORD

Two black audio/video speakers stacked vertically, no visible text or symbols on the device body.

Black audio amplifier speaker with visible grille and buttons (no text or symbols)

A 112A | A 115A | A 118A

A-Line Powered Speakers

Stylized logo of a D-shaped object enclosed in an oval frame (no text or symbols)

DYNACORD

GERMAN ENGINEERING EXCELLENCE

CONTENTS

INTRODUCTION 5

Scope of Delivery, Unpacking and Inspection 5

Warranty 5

HF-Interference 5

INSTALLATION 6

Controls, Indicators and Connections 6

Power Amplifier and Cooling 8

Quickstart 8

APPENDIX / ANHANG 16

Specifications 16

Block Diagram 18

Dimensions 20

Setup Examples....21

INHALT

EINFÜHRUNG 11

IMPORTANT SAFETY INSTRUCTIONS

The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not cover any ventilation openings. Install in accordance with the manufacturer's instructions.

8. Do not install near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or the grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for a long period of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15. Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the equipment.

16. To completely disconnect this equipment from the AC Mains, disconnect the power supply cord plug from the AC receptacle.

17. The mains plug of the power supply cord shall remain readily operable.

18. No naked flame sources, such as lighted candles, should be placed on the apparatus.

19. The product should be connected to a mains socket outlet with a protective earthing connection.

IMPORTANT SERVICE INSTRUCTIONS

CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when servicing the appliance.

2. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains.

3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.

4. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times.

5. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only permissible when using original parts.

6. Altering the circuitry without prior consent or advice is not legitimate.

7. Any work security regulations that are applicable at the locations where the appliance is being serviced have to be strictly obeyed. This applies also to any regulations about the work place itself.

8. All instructions concerning the handling of MOS-circuits have to be observed.

NOTE: SAFETY COMPONENT (MUST BE REPLACED BY ORIGINAL PART)

1 Introduction

The DYNACORD powered A-Line series includes three models: a 12-inch, two-way full-range; a 15-inch, two-way full-range; and a perfectly matching 18-inch subwoofer. All three models feature solid 15-mm plywood enclosures that combine durability with low weight. A high-quality black paint finish and steel grille offer road-ready ruggedness and a professional appearance. The full-range models are equipped with a 12-inch EVS-12K woofer (A 112A), a 15-inch EVS-15K (A 115A) and provide an 1.5" titanium diaphragm compression driver radiating into a 90 x 50-degree (H x V) high-frequency waveguide. Both of the cabinets provide an asymmetrical footprint with a 60-degree monitor angle allowing for alternative use as a powered floor monitor.

The onboard power modules of A 112A and A 115A combine lightweight Class-D dual-channel power amplifiers (biamping) with a total of 500 W dynamic peak power, along with the digital signal processing for crossover (24 dB/octave slope), EQ and advanced digital speaker protection. The linearization of transfer function in both cabinets is provided by state-of-the-art FIR filter technology.

The operating and connector panels are designed for intuitive operation and versatile connectivity. The 2-channel mixer section offers a XLR/TRS combo connector Line 1, stereo RCA sockets and a level control in the Input 1 channel, and a second XLR/TRS combo connector Line 2 which is switchable for microphone or line sensitivity in channel Input 2. For daisy-chaining to other devices, there is a XLR link output available which can be set to provide either the Line 1 or the mix signal.

In the Master section we find the overall Volume control, along with a switch for selecting the dedicated EQ setting for either Main or Monitor operation. A second switch activates a high-pass filter when using the full-range cabinets in combination with a powered subwoofer (A 118A).

The powered subwoofer A 118A features a similar power module with 400 W peak power, Master Volume control, a phase-inversion switch, a XLR/TRS combo input connector, and a XLR link output socket.

Setting up a small - yet very powerful - system turns out to be a piece of cake when combining with DYNACORD CMS mixing consoles (e.g. CMS 600-3). They are the perfect fit and offer a broad range of advanced features in concert sound quality.

1.1 Scope of Delivery, Unpacking and Inspection

• 1 Powered Speaker or Powered Subwoofer

• 1 Owner's Manual (this document)

• 1 M a i n s C o r d

• 1 Warranty Certificate including Safety Instructions

Carefully open the packaging and take out the cabinet. Inspect the cabinet's enclosure for damages that might have

occurred during transportation. Each cabinet is examined and tested in detail before leaving the manufacturing site to ensure that it arrives in perfect condition.

Please inform the transport company immediately if the cabinet shows any damage. Only the addressee can claim damages in transit. Keep the cardboard box and all packaging materials for inspection by the transport company. Keeping the cardboard box including all packing materials is recommended.

HINT: Only ship the cabinet in its original packaging.

Package the cabinet as ist was packaged by the manufacturer to guarantee optimum protection from transport damage.

1.2 Warranty

Visit www.dynacord.com for warranty information.

1.3 HF-Interference

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user can try one or more of the following measures to correct the interference:

• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a different circuit than the receiver
• Consult the dealer or an experienced radio/TV technician for help

2 Installation

2.1 Controls, Indicators and Connections

Number A 112A or A 115A A 118A

1 Mains switch (POWER)
2 Mains connector (MAINS IN)
3 Input connector for audio signal (A 112A or A 115A: LINE 1, A 118A: INPUT)
4 Output connector forl audio signal (LINK OUTPUT)
5 Limit indicator (LIMIT)
6 Volume level control (VOLUME)
7 - Polarity switch (0°/180° PHASE)
8	Input connector for audio signal (INPUT 2) with sensitivity selection switch (MIC/LINE 2)	-
9 AUX connector for audio signal (AUX L/R) -
10 Signal source selection switch (SELECT)		-
11	Speaker mode selection switch (MAIN/MONITOR)	-
12	Selection switch for MAIN mode (FULL RANGE/LO-CUT)	-
13	INPUT 1 level control (LEVEL)	-
14	INPUT 2 level control (LEVEL)	-

1 MAINS SWITCH (POWER)

POWER

Mains switch for switching the unit's power on or off. The switch lights after turning the power on. If the switch does not light when powered on with the mains cord correctly connected and mains voltage present, please contact your local dealer.

2 MAINS CONNECTOR (MAINS IN)

The device receives its power supply via the MAINS IN connector. Only the provided power cord may be used. Connect the device only to a mains network, which corresponds to the requirements indicated on the type plate.

3 INPUT CONNECTOR FOR AUDIO SIGNAL (LINE 1/INPUT)

Electronically balanced input for the connection of a line level signal source, such as mixer, signal processor, etc. Establishing a connection is possible via TRS or XLR-type plugs. Whenever possible, balanced signal feed is always preferable to guard against potential noise or HF-interference.

4 OUTPUT CONNECTOR FOR AUDIO SIGNAL (LINK OUTPUT)

LINK OUTPUT

This output socket is for the connection of an additional powered loudspeaker or subwoofer. The output signal is electronically balanced with a maximum level of +18 dBu. Output impedance is 150 ohms.

For the A 112A or A 115A, the output signal is based on the selection made at the signal source selection switch SELECT.

5 LIMIT INDICATOR (LIMIT)

The LIMIT indicator signals the device is operating at the internal power amp's limit. Frequent blinking of the LED is acceptable, since the incorporated DSP clip limiter prevents distortion. Continuous lighting indicates that you have to be aware of degradation in the outputted sound. In that case, the input level has to be reduced. The LIMIT LED also lights if the output level is reduced because of high amplifier temperature.

6 VOLUME LEVEL CONTROL (VOLUME)

Level control for adjusting the volume of the loudspeaker. The level control affects the power amp's overall amplification. VOLUME control does not affect the level of the LINK OUTPUT connector.

7 POLARITY SWITCH (PHASE)

180° PHASE

Select 0^ if the signal polarity should not be inverted. Select 180^ to change the signal polarity by 180^ .

8 INPUT CONNECTOR FOR AUDIO SIGNAL (INPUT 2) WITH SENSITIVITY SELECTION SWITCH (MIC/LINE 2)

Electronically balanced input for the connection of a line level signal source (such as mixer, signal processor, etc.) or a dynamic microphone. Establishing a connection is possible via TRS or XLR-type plugs. Whenever possible, balanced signal feed is always preferable to guard against potential noise or HF-interference.

MIC/LINE 2 switch

Use the MIC/LINE 2 switch for switching between microphone (+40 dB) or line (0 dB) input sensitivity. When depressed, it activates a microphone preamp for use with dynamic microphones. A pen or paperclip is needed to depress the switch to MIC mode.

CAUTION: Do not plug a line level signal into INPUT 2 when MIC/LINE 2 is in the MIC position.

HINT: There is no phantom power available at the INPUT 2 connector, so powering a condenser microphone is not possible.

9 AUX CONNECTOR FOR AUDIO SIGNAL (AUX L/R)

Stereo unbalanced RCA inputs AUX L/R for connecting sources such as CD players or MP3 players. Both RCA inputs are summed and can be controlled with IN-

PUT 1 LEVEL. The inputs can be used simultaneously with the XLR/TRS LINE 1 connector.

10 SIGNAL SOURCE SELECTION SWITCH (SELECT)

Use the SELECT switch for selecting the output signal of the LINK OUTPUT connector.

LINE 1

LINE 1 allows the pre-fader signal from LINE 1 input to pass to LINK OUTPUT (see illustration 2-1). The LINK OUTPUT signal level is not affected by the setting of the INPUT 1 LEVEL control. The signal from AUX L/R is not passed to LINK OUTPUT in this switch position.

Illustration 2-1: Signal flow LINE 1

MIX

The post-fader audio signals of INPUT 1 (LINE 1 and AUX) and INPUT 2 are mixed and passed to LINK OUTPUT (see illustration 2-2). The ratio of the input signals changes when the level controls INPUT 1 and INPUT 2 are turned. MIX allows the loudspeaker to act as a basic two-channel mixer that can send the mix to another loudspeaker via the LINK OUTPUT connector.

graph TD
    A["LINK OUTPUT"] --> B["SELECT LINE 3 MIX"]
    A --> C["LINE 1 AUX"]
    A --> D["LEVEL -5 0 +5 -10 dB"]
    A --> E["LEVEL -5 0 +5 -10 dB"]

Illustration 2-2: Signal flow MIX

11 SPEAKER MODE SELECTION SWITCH (MAIN/MONITOR)

Select MONITOR to activate optimized signal processing for floor monitoring applications. MAIN works best for music

playback and applications that require enhanced bass and treble.

12 SELECTION SWITCH FOR MAIN MODE (FULL RANGE/LOCUT)

If the speaker is used as a full-range system, select FULL RANGE. If a subwoofer without a low-cut signal output is used, i.e. the identical audio signal is used for the A 112A/A 115A and the subwoofer,

select LO-CUT for activating the internal 100 Hz low-cut filter of the A 112A/A 115A. If the A 112A/A 115A is connected to the HI-OUT output of a subwoofer with integrated low-cut filter, select FULL RANGE to avoid having the two low-cut filters of the subwoofer and A 112A/A 115A in series.

The setting LO-CUT can also be used for delay applications, when a high bass level is not necessary.

13 INPUT 1 LEVEL CONTROL (LEVEL)

Level control for adjusting the amplification of the signal at the LINE 1 and AUX L/R input.

14 INPUT 2 LEVEL CONTROL (LEVEL)

Level control for adjusting the amplification of the signal at the INPUT 2 input.

2.2 Power Amplifier and Cooling

This is a powered loudspeaker with a very high efficient amplifier module and as a result does not overheat. The temperature of the amplifier module is monitored. In the rare event it does get too hot, it will automatically shut down to protect itself. Once the temperature has returned to within the operating range, the amplifier will turn back on. This may happen when the speaker is operated in very high ambient temperatures and the enclosure is exposed to direct sunlight. Always ensure adequate cooling and appropriate shade to keep the ambient temperature around the speaker within the specified operating temperature range.

CAUTION: The rear panel of the amplifier module serves as a heat sink for the power amplifier. Certain parts may be hot during operation.

2.3 Quickstart

This section outlines setup and operation of two A 112A connected to a DYNACORD CMS mixer.

CAUTION: After system installation is complete, power on the mixing console first and position the master faders at the lowest setting before powering on the A 112A. Use the output faders to establish the desired volume setting. Otherwise, switching and power-on noise or the high level audio signal of an inadvertently playing audio source could result in high acoustic outputs, which in some cases might lead to hearing damage.

1. Place the A 112A, mounted on pole-mount stands to the left and to the right. The lower edges of the speaker systems should be approximately at a height of 1.8 meters to provide sufficient coverage and to prevent that listeners nearby are subject to extreme sound levels.

2. Using suitable XLR-type cables connect the Master Outputs of your mixing console, e.g. DYNACORD CMS 1000, to LINE 1 of the left or right A 112A. Position the master faders on the mixer to the minimum setting. Now, turn on the mixer.

3. Connect the A 112A to the mains outlet using the supplied mains cord. Plug the connector into the MAINS IN socket. Use the POWER switch to power-up the A 112A.

4. Set the LEVEL and VOLUME controls of the A 112A to 0 dB.

5. Select FULL RANGE and MAIN to operate the speakers as a main PA system.

6. Connect a audio source, e.g. CD player, to a line level input of the mixer, e.g. CMS 1000. Set all rotary con-

trols of the mixing console input channel to their center position. Adjust the input channel's 'Gain' control so that the Peak LED should not light at all or blink only once in a while.

1. Slowly raise channel fader and master faders on the mixing console to the desired positions - i.e. volume settings.

2. Your system is now ready for operation. Individual sound adjustments necessary can be made using the controls of the mixer's corresponding input channels.

3. Now have fun with your A 112A system!

4. After use, first switch off the A 112A and then the mixing console, so that distracting power-off noise will not occur. When using a DYNACORD CMS mixer, no power-off noise will be output from the 'Master Outputs'. This allows switching off the mixer first without a problem.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

AVIS: RISQUÉ DE CHOC ELECTRIQUE - NE PAS OUVRIR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, GROUNDING OF THE CENTRE PIN OF THIS PLUG MUST BE MAINTAINED.

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

Property A 112A A 115A A 118A
Order No. 230 V:	F01U270188 (A112A-230V)120 V:F01U275161 (A112A-120V)	230 V:F01U270189 (A115A-230V)120 V:F01U275163 (A115A-120V)	230 V:F01U270190 (A118A-230V)120 V:F01U275164 (A118A-120V)
Cabinet Powered two-way full-range	speaker, 12" woofer, 1.5" compres-sion driver, vented design	Powered two-way full-range speaker, 15" woofer, 1.5" com-pression driver, vented design	Powered subwoofer 1 x 18", vented design
Maximum Amplifier Output Capability, IHF-A 500 W 400 W
Amplifier Power RMS 420 W 305 W
Output Stage Topology, amplifier Class D
Max. SPL 1 m / calc. 121 dB 124 dB 123 dB
Frequency Range (-10 dB)	55 Hz to 17 kHz	50 Hz to 17 kHz	40 Hz to 130 Hz
Frequency Response (-3 dB)	65 Hz to 16 kHz	60 Hz to 16 kHz	50 Hz to 100 Hz
Nominal Coverage Angle (Horizontal x Vertical)	90° x 50°		Omnidirectional
Audio Input (LINE 1 or MIC/LINE 2)	INPUT 1: XLR and 1/4" TRS combinationINPUT 2: XLR and 1/4" TRS combination		INPUT: XLR and 1/4" TRS combination
Audio Input (AUX)	Stereo RCA, unbalanced		-
Audio Output (LINK OUTPUT)	XLR, balanced
Digital Signal Processing	28/56-Bit, 48 kHz
Crossover Frequency	1.7 kHz		100 Hz
Switchable Phase (Polarity)	-	-	0°, 180°
LF Transducer	1 x EVS-12K, 305 mm (12"),F01U250937	1 x EVS-15K, 381 mm (15"),F01U250940	1 x EVS-18K, 457 mm (18"),F01U250964
HF Transducer	DH-1K, 39 mm (1.5"), titanium diaphragm compression driver,F01U250928		-
Power Requirement	230 V:220 to 240 V AC, 50 to 60 Hz, 0.6 A, IEC inlet120 V:100 to 120 V AC, 50 to 60 Hz, 1.0 A, IEC inlet
Safety Class	I
Operating Temperature Range	0 °C to 40 °C
Dimensions (W x H x D)	607 mm x 362 mm x 340 mm	708 mm x 432 mm x 382 mm	661 mm x 507 mm x 574 mm
Net Weight	16.8 kg 22.5 kg 31.3 kg
Shipping Weight	21.9 kg 28.4 kg 40.1 kg
Enclosure Material	15-mm Multi-ply wood
Finish	Textured paint
Grille	18-GA steel with black powder coat
Handles	1	2	2
Optional Accessories
Dust Cover	SH-112A: F01U270395	SH-115A: F01U270396	SH-118A: F01U270397
VPM 1500, variable speaker pole	F01U141047
BS 35, speaker stand	F01U141046

Device in rated condition, DSP flat, amplifier load 8 ohms, dual channel, mains voltage 230 V/50 Hz, unless otherwise specified.

Illustration 3-1: Frequency response of A 112A

Illustration 3-2: Frequency response of A 115A

Illustration 3-3: Frequency response of A 118A

3.2 Block Diagram / Blockdiagramm

Illustration 3-4: Block diagram of A 112A or A 115A

graph TD
    A["INPUT 2"] --> B["MIC/LINE 2"]
    B --> C["LEVEL"]
    C --> D["VOLUME"]
    D --> E["FILTERS"]
    E --> F["FULLRANGE"]
    F --> G["LO-CUT"]
    G --> H["MONITOR"]
    H --> I["FIR X-OVER +EQ"]
    I --> J["LIMITER HF"]
    I --> K["LIMITER LF"]
    J --> L["CLASS-D AMPLIFIER"]
    K --> M["PROTECTIONS"]
    L --> N["HF"]
    M --> O["LF"]
    P["LINE 1"] --> Q["Select"]
    Q --> R["LINK OUTPUT"]
    S["THERMAL PROTECTION"] --> D
    T["POWER SUPPLY"] --> U["5x20mm/T5A"]
    V["MAINS 220V...240V 50Hz...60Hz"] --> W["MAINS 1-L"]
    V --> X["MAINS 1-E"]
    V --> Y["MAINS 1-N"]

Illustration 3-5: Block diagram of A 118A

graph LR
    A["INPUT"] --> B["Δ"]
    B --> C["VOLUME POLARITY FILTERS"]
    C --> D["∅"]
    D --> E["LIMITER LF"]
    E --> F["CLASS D-AMPLIFIER"]
    F --> G["LF"]
    H["LINK OUTPUT"] --> I["θ"]
    I --> J["THERMAL PROTECTION"]
    J --> C
    K["MAINS 220V...240V 50Hz...60Hz"] --> L["POWER 5x20mm/T5A"]
    L --> M["POWER SUPPLY"]
    N["PHASE 0° 180°"] -.-> D

3.3 Dimensions / Abmessungen

A 112A

BOTTOM

Technical line drawing of a speaker or audio device with circular components and a central rectangular component (no text or symbols)

FRONT

RIGHT

Front view of a white cabinet with internal components and indicator lights (no text or symbols visible)

REAR

A 115A

BOTTOM

Technical line drawing of a speaker or audio device with a 700mm height and 27.89" width dimension (no text or symbols on the diagram itself)

FRONT

RIGHT

Front view of a cabinet or enclosure with a central display unit and circular indicators (no text or symbols visible)

REAR

A 118

TOP

Technical drawing of a speaker grille with three circular cutouts and a 60mm height dimension label (no text or symbols beyond measurement)

FRONT

RIGHT

Front view of a white electronic device with a black control panel and indicator lights (no text or symbols visible)

REAR

FULL-RANGE + SUBWOOFER CONFIGURATION

graph TD
    A["Speaker 1"] --> B["LINK OUTPUT"]
    A --> C["VOLUME"]
    A --> D["MAIN"]
    E["Speaker 2"] --> F["LINK OUTPUT"]
    E --> G["VOLUME"]
    E --> H["MAIN"]
    I["Speaker 3"] --> J["LINK OUTPUT"]
    I --> K["VOLUME"]
    I --> L["MAIN"]
    M["Speaker 4"] --> N["LINK OUTPUT"]
    M --> O["VOLUME"]
    M --> P["MAIN"]
    Q["Speaker 5"] --> R["LINK OUTPUT"]
    Q --> S["VOLUME"]
    Q --> T["MAIN"]
    U["Speaker 6"] --> V["LINK OUTPUT"]
    U --> W["VOLUME"]
    U --> X["MAIN"]
    Y["Speaker 7"] --> Z["LINK OUTPUT"]
    Y --> AA["VOLUME"]
    Y --> AB["MAIN"]
    AC["Speaker 8"] --> AD["LINK OUTPUT"]
    AC --> AE["VOLUME"]
    AC --> AF["MAIN"]

Illustration 3-6: Stacking full-range systems with subwoofers (Dual A 112A or A 115A with LO-CUT setting selected, dual A 118A subwoofers)

DAISY-CHAIN CONFIGURATION

Illustration 3-7: Daisy-chaining full-range systems (dual A 112A or A 115A)

MONITOR CONFIGURATION

Illustration 3-8: Using full-range systems as Monitors (Dual A 112A or A 115A with MONITOR setting selected)

DYNACORD

12000 Portland Avenue South, Burnsville, MN 55337, USA

Phone: [phone], Fax: [phone]

www.dynacord.com

© Bosch Communications Systems

10/2012

Part Number F01U270188 Vs 02

Europe, Africa, and Middle East only. For customer orders, contact Customer Service at:

[phone] Fax: [phone]

Asia & Pacific only. For customer orders, contact Customer Service at:

[phone] Fax: [phone]

For technical assistance, contact Technical Support at: [phone]

Specifications subject to change without notice.