| Input: |
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Balanced, using “Transformer-Like-Amplifier” (T.L.A.) with toroidal Common Mode Rejection Low Pass Filter that excludes frequencies above 150 kHz.
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The T.L.A. is followed by an actual input transformer permitting a full +26 dBu input signal to be handled at unity gain without an input pad over the whole audio spectrum.
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Combines the advantages of both an “Electronically Balanced” and true Transformer input.
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When the Phantom voltage is disabled, this input serves as a very high quality Line Input.
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| Input Impedance: |
10,000 Ohms + or 20% |
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| Noise: |
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Measured at Main Output:
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Input terminated with 150 Ohms. |
Measured over band limited 22Hz-22kHz, Unweighted:
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With Gain at Unity: |
Better than 100 dBu. |
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With Gain at 66 dB: |
Better than 62 dBu |
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Equivalent Input Noise (E.I.N.) |
Better than 128 dBu |
| Frequency Response: |
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Main Output, no load:
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@ 10 Hz, |
0.2 dB |
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@ 160 kHz |
3 dB |
| Buss Output |
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| @ 10 Hz |
0.2 dB |
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@ 160 kHz |
3 dB |
| High Pass Filter: |
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Swept Frequency continuously variable from 20 Hz to 250 Hz.
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Slope: |
12 dB/Octave. |
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| Gain: |
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Switched Gain from Unity to +66dB in 6 dB steps.
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| Trim: |
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Continuously adjustable potentiometer from 6dB to +6dB with reference to setting on the Gain Switch.
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| Maximum Output Level: |
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Balanced and Floating Transformer Output from 20 Hz to 40 kHz: +25 dBu. (Clips at just over +26 dBu)
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| Mute: |
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Mutes Main Output only. (i.e. Monitor remains Live)
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| Total Harmonic Distortion and Noise: |
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Main Output
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@ 1kHz, +20 dBu output
level, no load: |
Better than 0.001%.
(No high order Harmonics) |
Silk Engaged:
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Approximately 0.2% Second Harmonic |
Main Output |
@ 20Hz, +20 dBu output
level, no load: |
Better than 0.01%. |
Buss Output
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@ 1kHz, +20 dBu output
level, no load, measured at the output: |
Better than 0.002%. |
| SILK: |
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The 5012 uses mainly single-sided amplifier circuitry that excludes any possibility of crossover distortion. The “SILK” button reduces negative feedback and adjusts the frequency spectrum to provide a very sweet and musical performance.
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| Buss Output: |
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The Buss Output is designed to feed other Portico
Series modules with Buss Inputs.
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| Crosstalk: |
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Measured Channel to Channel:
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Better than 90 dB @ 15kHz. |
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| Phantom Power: |
+48 Volts DC +/- 1% |
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| Main Power Required: (From External Power Unit) |
Voltage Range, |
9 to 18 Volts DC. |
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| Current consumption: |
@ 9VDC = 1.3 A typical |
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@12VDC = 1A typical |
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@15VDC= 800 mA typical |
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@18VDC= 650 mA typical |
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| Rear Panel Power Connector: |
5.5mm X 2.1mm DC jack, Center Positive |
