Technical Specifications: DPA 4245, DPA 4260
Amplifier at rated conditions, both channels driven, direct outputs with 8Ω loads, isolated outputs with rated load and voltage, |
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unless otherwise specified. |
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| DPA4245 |
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| DPA4260 |
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DUAL MODE | Direct Output | Isolated Outputs |
| Direct Output | Isolated Outputs |
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Output Definition | 8Ω | 4Ω | 100V | 70V | 25V | 8Ω | 4Ω | 100V | 70V | 25V |
Load impedance or rated output voltage |
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Rated Load Impedance |
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| 28.5Ω | 14Ω | 1.8Ω |
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| 20Ω | 9.8Ω | 1.25Ω |
isolated outputs only |
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Maximum Midband Output Power | 240W | 450W | 410W | 400W | 390W | 330W | 600W | 590W | 580W | 570W |
THD=1%, 1kHz |
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Maximum Midband Output Voltage | 44V | 42.4V | 108V | 74.8V | 26.5V | 51.3V | 49V | 109.5V | 75.4V | 26.7V |
THD=1%, 1kHz, RMS, rated load |
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Rated Output Power | 230W | 350W | 350W | 350W | 350W | 300W | 500W | 500W | 500W | 500W |
THD <0.2%, 45Hz ... 20kHz, |
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>10min. according IEC |
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Rated Output Voltage | 42.9V | 37.4V | 100V | 70V | 25V | 49V | 44.7V | 100V | 70V | 25V |
THD<0.2%, 45Hz ... 20kHz |
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Maximum RMS Voltage Swing | 44V |
| 125 V | 87V | 31V | 52V |
| 121V | 88V | 32V |
THD=1%, 1kHz, no load connected |
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Frequency Response, | 45 Hz .... 30kHz | 45 Hz.... 22kHz | 45 Hz .... 30kHz | 45 Hz .... 22kHz | ||||||
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Voltage Gain | 34 dB | 34 dB | 42 dB | 39 dB | 30 dB | 35 dB | 35 dB | 42 dB | 39 dB | 30 dB |
at 1 kHz |
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Input Sensitivity and Impedance |
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| 0dBu ( 775mV) / 20 kOhm |
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at rated condition |
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Slew Rate |
| 25 V/µs |
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| 30 V/µs |
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Power Bandwith | 45Hz ...50kHz | 45Hz .... 25kHz |
| 45Hz .... 50kHz |
| 45Hz .... 25 kHz | ||||
THD=1%, ref. 1kHz, half power @ rated |
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load impedance |
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THD at rated output power, | < 0.05% | < 0.1% | < 0.2% | < 0.3% | < 0.05 % | < 0.1% | < 0.2% | < 0.3% | ||
MBW=80kHz, 1 kHz |
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< 0.08% | < 0.1% | < 0.3% | < 0.5% | < 0.08% | < 0.1% | < 0.3% | < 0.5% | |||
60 Hz, 7 kHz |
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DIM30 | < 0.03% | < 0.2% | < 0.2% | < 0.2% | < 0.03 % | < 0.2% | < 0.3 % | < 0.3% | ||
3.15 kHz, 15 kHz |
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Crosstalk |
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ref. 1kHz, at rated output power |
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Input Impedance |
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| 20 kOhm |
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20Hz ... 20 kHz, balanced |
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Damping Factor | > 300 / > 200 |
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| > 300 / > 200 |
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at 100Hz / 1kHz, direct outputs only |
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Insertion Loss |
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| 0.7 dB | 0.8 dB | 0.9 dB |
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| 0.7 dB | 0.8 dB | 1.1 dB |
isolated outputs only |
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Signal to Noise Ratio |
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| > 100 dB |
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Rated output voltage to noise, |
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