Instruction Manual for DATEQ models including: DA-2300, DDA-2300, DDA-4300, DDA-2300 Class-D Power Amplifier, Class-D Power Amplifier, Power Amplifier, Amplifier
DDA-2300 – DATEQ
DDA-2300 DDA-4300 Class-D Power Amplifier Important Safety Information 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this device near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in a ccordance with the manufacturer's instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other devices (including amplifiers) that produce heat. 9. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. 10. Connect the device to a mains outlet with a protective earth connection. WARNING! TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THE PLU G WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLES S THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NO T EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. TO PREVENT ELECTRICAL SHOCK MATCH WIDE BLADE PLUG TO WIDE SLOT, FULLY INSERT . 2 INTRODUCTION Description . The DDA-x300 series power amplifier is designed for pro audio application and fixed installation sound systems. Class-D technology helps the amplifier to generate powerful output while generating less heat because of its high efficiency up to 85%. The power amplifier is designed with a PWM power supply to ensure extreme stability, less noise and minimum heat. Its rated power is 300W@ 8 / 500W@4 per channel. Selectable modes stereo, parallel and bridge for flexible usage. With protection including clip, high temp, overload and short circuit to ensure this amplifier works properly under any working environment. Features · Switching power technology Class-D power amplifier · Green technology amplifier of 85% efficiency · With PWM special power circuit to ensure excellent cooling system · 19" universal rack mount type in 1U height · Output mode selector with stereo, parallel and bridge setting · lnput by balanced XLR male connector per channel · Output by balanced Speakon female connector per channel · Clip, high temp, overload and short circuit protection 3 4 5 AMPLIFIER OPERATION GUIDANCE Setup Before operating the DDA-x300 series amplifier, check the mains supply voltage and connect the IEC inlet to the mains power supply using the power lead supplied (or equivalent). Ensure that the cooling vents at front and rear are not covered or obstructed in any way with adequate space for air-flow through the unit. Each side of the DDA-4300 series amplifier can be operated as an independent pair of channels or as a single combined output in Bridge mode. Set the mode using the selector switch for the relevant pair of channels (rear panel 7). Bridge mode offers the option of operating the DDA-4300 as a stereo amplifier into 2 larger 8 speakers. It is also possible to operate one side in Bridge mode to create 1 high output channel with the other side in stereo, which can be useful to power a large sub and a pair of satellite speakers (left + right). Stereo mode Connect Left and Right speakers to Channel 1 and Channel 2 outputs via the SPK (rear panel 2, 3) . For SPK wiring, connect + and - wires to pins 1+ and 1-. Ensure that the combined load on each channel is no lower than 40 (for speakers in parallel, 8 + 8 = 4) Connect line level Left and Right inputs to the CH 1 and CH 2 XLR inputs ( rear panel 6, 8) Parallel mode Connect the speakers to the speaker outputs as described above but both outputs will only receive a mono signal from the CH 1 XLR input ( rear panel 8) and is controlled by CH1 volume control ( front panel 1) Bridge mode Bridge mode is different to the other 2 modes in that it combines both output channels to a single mono output. This mode enables double the power to a single speaker output compared with Stereo or Parallel modes. The difference is that the speaker load must be no lower than 8, whether a single speaker or combined load. Bridge mode can be useful especially when driving a large, high power subwoofer. Connect speaker(s) to the Channel 1 SPK output. Connect the "+" speaker wire to amplifier 1+ (rear panel 3) and the "--" speaker wire to amplifier 2+ (rear panel 3). Incorrect speaker wiring can damage the amplifier! Bridge output receives a mono signal from CH 1 XLR input (rear panel 8) and is controlled by CH 1 volume control (front panel 1) Operation With channel gain controls (front panel 1, 5) turned fully down (anti-clockwise), switch on the power (front panel 6) and the LED POWER indicator will light. Playing the input signal into the connected channel inputs, gradually increase the relevant gain controls (only CH 1 will have an effect in Bridge mode). The amplified signal should be heard through the speakers and the SIG indicators (front panel 2, 4) should respond to the audio output. Increase the volume controls to the required level. Alongside the SIG indicators are CLIP indicators, which should only light very briefly on the loudest transients or spikes in the audio. If the CLIP LEDs light for more than a fraction of a second at a time, the volume controls should be turned down or input signal will need to be reduced. Before powering down, turn down the volume controls to avoid loud pops or noises through the speaker. 6 DDA-2300 DDA-4300 7 8Microsoft: Print To PDF