Kramer : 912
Description
The 912 is a high−performance power amplifier for balanced or unbalanced stereo audio signals. Either input can deliver a speaker output of 8.4 watts RMS power per channel into a 4Ω load.
Features
912 features include:
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High Efficiency - Class D operation.
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S/N Ratio - 63dB balanced.
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Volume Control - Selectable control knob or 10V external control on a terminal block connector.
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Indicator LEDs - Power on, over−temperature warning.
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Compact Kramer TOOLS™ - 3 units can be rack mounted side−by−side in a 1U rack space with the optional rack adapter.
Specifications
| INPUTS: | 1 unbalanced stereo audio, 1Vpp/10KΩ on 2 RCA connectors; 1 balanced stereo audio, +4dBu/10KΩ on a 5−pin removable terminal block. |
| OUTPUT: | 1 stereo speaker output on a 4−pin removable large terminal block. |
| INPUT SENSITIVITY: | Unbalanced: 440mVpp; balanced: 105mVpp. |
| OUTPUT POWER: | 5.5W per channel (8Ω), 8.4W per channel (4Ω). |
| AMPLIFIER TYPE: | Class D. |
| MAXIMUM VOLTAGE GAIN: | Unbalanced: 32.6dB (x43); balanced: 36.2dB (x65). |
| BANDWIDTH (-3dB): | >20kHz. |
| S/N RATIO: | Unbalanced 60dB; balanced 63dB. |
| GAIN: | 8Ω: unbalanced <−68 to 33dB, balanced −60 to 36dB; 4Ω: unbalanced −48 to 40dB, balanced −60 to 38dB. |
| COUPLING: | Input: unbalanced DC (internal AC path), balanced AC; Output: DC. |
| AUDIO THD + NOISE: | 8Ω: unbalanced 2.3%, balanced 2.5%; 4Ω: unbalanced 3.1%, balanced 4.3%. |
| AUDIO 2nd HARMONIC: | 8Ω: unbalanced 1.4%, balanced 1.4%; 4Ω: unbalanced 2.7%, balanced 3.5%. |
| POWER CONSUMPTION: | 12V DC, 2.8A, full load 4Ω @10% THD+N. |
| DIMENSIONS: | 12cm x 8.5cm x 2.5cm (4.7" x 3.4" x 1") W, D, H. |
| WEIGHT: | 0.3kg (0.66lbs) approx. |
| INCLUDED ACCESSORIES: | Power supply, mounting bracket. |
| OPTIONS: | RK−3T 19” rack adapter. |
Resources & Documents
| 912.pdf | Datasheet |