Dimensions (LxWxH): 13.25" x 19" x 1.75" / 336 x 482 x 44mm (1-rack mount space)
Weight: 24 lbs. / 11Kgs.
Special Features: High/Low Pass Filter; Input Sensitivity Selector; Ground Lift
Reference Quality Power Amplifier [R-300 Plus]
Controls :
Front : Power on/off switch, attenuator, LED indicator
Rear : Mode seletor switch, Stereo/bridged mono switch
Connectors :
Input : 1 XLR, 1/4" balanced per channel
Output : 5-way binding post and SpeakonTM per channel
Indicators :
Power : Green, Protection : Red, Clip : Red, Signal : Green
Power Source : 100-120VAC or 220-240VAC; 50/60Hz
(supplied AC mains transformer depends on country requirements)
Power Consumption : 250W(2.4A)
Weight : 8.4kg/18.5lb
Dimensions (WxHxD) : 482x88x317mm/19x3.5x12.5in
Solid DYNACORD technology for fixed installations at very competitive prices. DSA power amplifiers offer a very high, stable output with high efficiency at a high performance level and are therefore the ideal choice for typical fixed installation applications. The connectivity consequently provides Phoenix type in/outs, the input level controls are located on the rear panel, also a switchable high-pass filter (50 Hz, 18 dB/oct) and a Ground Lift switch. The POWER REMOTE connector makes the task of remote controlling the power amplifier as well as switching it on and off simple. For further remote-supervision and –control possibilities and integration into IRIS-Net networks, an optional remote control module (RCM-810) is available.
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 50W+50W<br>
4ohm(T.H.D 0.05%) 75W+75W<br>
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BRIDGED MONO <br>
8ohm(T.H.D 0.05%) 50W<br>
8ohm(T.H.D 0.5%) 170W
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Frequency Response 20Hz- 20kHz, ±0.5dB
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Convection Cooled
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SoftStart Protection System
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Balanced 10kΩ@0.775V Inputs
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The DA-250F is a 4-Channel Digital Power Amplifier featuring lightweight, compact, high power output, and high efficiency. It delivers 250 W × 4 channels (4 Ω output) using a switching power supply. Each channel is equipped with an independent power section. It can be mounted in an EIA Standard equipment rack (1 unit size).
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<table> Specification </table> *0 dB = 0.775 V <table><tbody><tr> <th>Power Source</th> <td>120 V AC, 50/60 Hz</td> </tr> <tr> <th>Amplification System</th> <td>Class D</td> </tr> <tr> <th>Power Consumption</th> <td>200 W (based on UL/CSA standards)<br>
1300 W (rated output 4 Ω × 4)<br>
850 W (rated output 8 Ω × 4)</td> </tr> <tr> <th>Input</th> <td>4 circuits, +4 dB* (1.23 V) (input level control in maximum position),<br>
10 kΩ, electronically-balanced, removable terminal block (3 pins)<br>
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)</td> </tr> <tr> <th>Rated Output</th> <td>4 channels: 250 W × 4 (4 Ω), 170 W × 4 (8 Ω)<br>
2 channels (BRIDGE): 500 W × 2 (8 Ω)<br>
M4 screw terminal, distance between barriers: 8.8 mm</td> </tr> <tr> <th>Frequency Response</th> <td>20 - 20,000 Hz (±1 dB)</td> </tr> <tr> <th>Total Harmonic Distortion</th> <td>0.1% (1 kHz)<br>
0.3% (20 - 20,000 Hz)</td> </tr> <tr> <th>Protection Circuit</th> <td>Protection against excessive current flow due to overload,<br>
short circuit, unusual DC voltage output,<br>
temperature rise at power amp. heat sink (110℃ or more),<br>
temperature rise inside the unit (80℃ or more)</td> </tr> <tr> <th>S/N Ratio</th> <td>100 dB (A-weighted)</td> </tr> <tr> <th>Crosstalk</th> <td>70 dB (A-weighted)</td> </tr> <tr> <th>LED Indicator</th> <td>Power (blue) × 1, Input (green) × 4, Output (yellow) × 4,<br>
Peak (red) × 4, Protect (red) × 4</td> </tr> <tr> <th>Cooling</th> <td>Forced air cooling</td> </tr> <tr> <th>Operating Temperature</th> <td>-10℃ to +40℃</td> </tr> <tr> <th>Operating Humidity</th> <td>90% RH or less (no condensation)</td> </tr> <tr> <th>Finish</th> <td>Panel: Aluminum, black, alumite Case: Plated steel sheet</td> </tr> <tr> <th>Dimensions</th> <td>482 (W) × 44 (H) × 401.8 (D) mm</td> </tr> <tr> <th>Weight</th> <td>6.6 kg</td> </tr> <tr> <th>Accessory</th> <td>Power cord (2 m) …1, Removable terminal plug (3 pins) …4,<br>
Tamper-proof cap …4</td></tr></tbody></table>
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The high efficiency of the ED series enables maximum efficiency with low heat generation.<br>
<br>
A new and unique Class-H circuity technology using state of the art SMD Surface Mount Technology with a reduced number of components offering performance levels exceeding audiophile levels like a slew rate of 50V/µs and high-end extended dynamic sound. The amplifier provides 2x300W into 4 Ohm is equipped complete with temperature-controlled fan cooling, all common protective circuits such as over-temperature, short circuit, RFI and soft start.<br>
The integral soft clip limiter protects against damage to the connected loudspeakers, the activity of a protective circuit, signal and limiter are shown for each channel by LEDʼs.
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<table><tbody><tr><th>AMPLIFIER SPECIFICATIONS</th> </tr><tr><td>Power output stereo 4Ω:</td><td>2 x 300 Watt rms</td><td> </td></tr><tr><td>Power output stereo 8Ω:</td><td>2 x 180 Watt rms</td><td> </td></tr><tr><td>Power output bridged 8Ω:</td><td>600 Watt rms</td><td> </td></tr><tr><td>Frequency Response:</td><td>20 Hz ÷ 20 kHz </td><td> </td></tr><tr><td>Signal/noise rate:</td><td>> 105 dB</td><td> </td></tr><tr><td>Crosstalk:</td><td>> 70 dB</td><td> </td></tr><tr><td>Distortion (THD+N):</td><td></td><td> </td></tr><tr><td>Intermodulation:</td><td></td><td> </td></tr><tr><td>Damping factor:</td><td>200:1 (8 Ω)</td><td> </td></tr><tr><td>Slew rate:</td><td>50 V/μS</td><td> </td></tr></tbody></table>
<table> <tbody><tr><th>INPUT SECTION</th> </tr><tr><td>Input connector:</td><td>2 x XLR balanced, 6,3mm jack unbalanced</td><td> </td></tr><tr><td>Input sensitivity:</td><td>0 / 0.775 dBm/V RMS</td><td> </td></tr><tr><td>Input impedance: </td><td>10.000 kΩ</td><td> </td></tr><tr><td>Controls:</td><td>Volume control for each channel</td><td> </td></tr></tbody></table>
<table> <tbody><tr><th>OUTPUT SECTION</th> </tr><tr><td>Output connector:</td><td>2 x Neutrik Speakon 4 ways</td><td> </td></tr></tbody></table>
<table> <tbody><tr><th>SYSTEM PARAMETERS</th> </tr><tr><td>Cooling:</td><td>Two-speed fan</td><td> </td></tr><tr><td>Protections:</td><td>Temperature, DC, RFI short circuit, Soft-Start thermal on transformer</td><td> </td></tr><tr><td>Amplifier class:</td><td>H</td><td> </td></tr></tbody></table>
<table> <tbody><tr><th>POWER REQUIREMENT</th> </tr><tr><td>Operating voltage:</td><td>220÷240 / 110÷120 ~ 50 / 60 V ~ Hz </td><td> </td></tr><tr><td>Max.current:</td><td>6 A</td><td> </td></tr><tr><td>Power Consumption:</td><td>1300 W</td><td> </td></tr></tbody></table>
<table> <tbody><tr><th>PHYSICAL SPECIFICATIONS </th> </tr><tr><td>Height:</td><td>88 / 3.46 mm/inch</td><td> </td></tr><tr><td>Width:</td><td>483 / 19.01 mm/inch</td><td> </td></tr><tr><td>Depth:</td><td>350 / 13.77 mm/inch</td><td> </td></tr><tr><td>Net Weight:</td><td>11.45 / 25.24 Kg/Lbs</td><td> </td></tr></tbody></table>
<table><tbody><tr><th>SHIPPING INFORMATION</th> </tr><tr><td>Package height:</td><td>120 / 4.72 mm/inch</td><td> </td></tr><tr><td>Package width:</td><td>540 / 21.25 mm/inch</td><td> </td></tr><tr><td>Package depth:</td><td>470 / 18.05 mm/inch</td><td> </td></tr><tr><td>Shipping Weight:</td><td>13.81 / 30.44 Kg/Lbs</td></tr></tbody></table>
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