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LAKE PEOPLE
electronic GmbH
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2-ch MICROPHONE PREAMP F355
The LAKE PEOPLE MIC-AMP F355 is an extremely low-noise and fully featured microphone preamplifier with excellent specifications. Due to its versatile concept and high level capability it is also suitable for line signal boosting and balancing.
The gain element of the standard version is a high quality instrumentation amplifier. As an option, MIC-AMP F355 may be equipped with a sophisticated Class-A frontend, built with discret components.
Gain is controlled with two knobs per channel: a twelve-step rotary switch sets coarse gain in 6-dB steps from 0 to +66 dB. A centerdetented potentiometer allows fine adjustment within a range of +/- 5 dB. The lo-cut filter may be set individually from 10 to 250 Hz.
Each channel is equipped with buttons for
- Phantom powering
- Pad
- Phase reverse
- (de-) activation of Gain-Fine adjust
- (de-) activation of Lo-Cut control
- Mute
The state of all these buttons is reported by LEDs.
In order to keep the signal path as pure as possible, the electronic components of the Gain-Fine control and the Lo-Cut filter stage may be removed completely with the aid of relais.
Whilst switching on or off the phantom power, the outputs may be muted during 4 seconds.
A sixteen-segment LED bargraph with semilogarithmical law displays the output level over a range of 36 dB. Display sensitivity can be adjusted to the user's requirements with a trim located on the front panel.
A clip LED starts flashing at levels above +20 dBu and thus reliably warns against distortion. The electronically balanced inputs and outputs are situated on the rear panel. Each channel is equipped with two outputs.
Klicka på bilden om du vill se den i ett större format.
Channel features:
- Electronically balanced input via XLR
- Gain 0 ... +66 dB switchable in 12 steps of 6 dB
- Fine-adjustment by center detent pot +/- 5 dB may be deactivated
- Lo-cut, 12 dB/oct., with variable frequency range 12...250 Hz may be deactivated
- Noise -129 dB at 60 dB gain
- Pad-switch for -12 dB level reduction
- Programmable intelligent muting system
- Switchable 48 V phantom powering
- Switchable phase reverse
- 16-step ultra fast level meter, 0 … -36 dBr may be calibrated individually on the front panel
- Additional separate Clip Led
- 2 x electronically balanced outputs via XLR
Option: transformer balanced outputs
Option: Ultra High Quality Class-A Frontend
Option: GP-I/O e.g. for mute / rec light control
 Här kan du ladda hem en F355-manual (PDF 820 kB) på tyska och engelska.
| TECHNICAL DATA MIC-AMP F355 |
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Inputs:
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2, electr. balanced, 5 kohms |
| Input CMRR: |
> 80 dB (@ 15 kHz / +60 dB) |
| Max. input level: |
> +21 dBu ( > 33 dBu with pad) |
| Gain coarse:: |
0 ... +66 dB (6 dB steps) |
| Gain fine: |
+/- 5 dB variable |
| Gain accuracy: |
+/- 0,25 dB |
| Lo-Cut: |
12 Hz ... 250 Hz (-3 dB) |
| THD+N: |
< 0,001 % |
| Noise: |
-129 dB (@ 60 dB gain) |
| Frequency range: |
10 Hz … 30 kHz (-0,5 dB) |
| Internal bandwidth: |
200 kHz (@ +60 dB gain) |
| Max. output level: |
> +25 dBu (in 600 ohms ) |
| Output CMRR: |
> 60 dB (@ 15 kHz) |
| Output impedance: |
< 30 ohms |
| Meter range: |
0 … -36 dBr, adjustable |
| Power supply: |
115 / 230 VAC, 15 VA |
| Dimensions: |
483x44x166 mm (WxHxD), 19", 1U |
| Case: |
Stainless steel |
| Front: |
Front dark grey |
| Options: |
Transformer balanced outputs
Ultra High Quality Class-A Frontend
GP-I/O e.g. for mute / rec light control |
2/4/6-ch MICROPHONE PREAMP F366
The LAKE PEOPLE MIC AMP F366 is an excellent and extremely low-noise microphone preamplifier. It is deliverable as a two, four or six channel unit.
Due to its versatile concept and high level capapility it is also suitable for line signal boosting and balancing.
Gain is controlled with a twelve-step rotary switch which sets gain in 6-dB steps from 0 to +66 dB.
Each channel is equipped with switches for
- Phase Reverse and
- Low Cut.
48V Phantom supply may be activated for both channels of a module simultaneously. The state of all these switches is reported by LEDs.
A four-segment LED bargraph displays the output level over a range of 15 dB. Display sensitivity can be adjusted internally to the user's requirements.
The inputs and outputs are situated on the back panel, they are equipped with gold plated XLR connectors.
As an option, the MIC AMP F366 can be equipped with transformer balanced outputs.
Klicka på bilden om du vill se den i ett större format.
Channel features:
- Electronically balanced input via XLR
- Gain 0 ... +66 dB switchable in 12 steps of 6 dB
- Switchable Lo-cut, 12 dB/oct., with 60 Hz corner frequency
- Noise -129 dB at 60 dB gain
- Switchable phase reverse
- 4-step level meter, 0 … -15 dBr may be calibrated internally
- Electronically balanced output via XLR
- Dual channel switchable 48 V phantom powering
Option: transformer balanced outputs
Här kan du ladda hem en F366-manual (PDF 550 kB) på tyska och engelska.
| TECHNICAL DATA MIC-AMP F366 |
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Inputs:
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2/4/6, electr. balanced, 5 kohms |
| Input CMRR: |
> 80 dB (@ 15 kHz / +60 dB) |
| Max. input level: |
> +21 dBu |
| Gain coarse:: |
0 ... +66 dB (6 dB steps) |
| Gain accuracy: |
+/- 0,25 dB |
| Lo-Cut: |
60 Hz (-3 dB) |
| THD+N: |
< 0,001 % |
| Noise: |
-129 dB (@ 60 dB gain) |
| Frequency range: |
10 Hz ... 20 kHz (-0,1 dB) |
| Internal bandwidth: |
5 Hz ... 70 kHz (-3 dB), 200 kHz (@ +60 dB gain) |
| Max. output level: |
> +21 dBu (in 600 ohms) |
| Output CMRR: |
> 60 dB (@ 15 kHz) |
| Output impedance: |
< 30 ohms |
| Meter range: |
0 ... -15 dBr, adjustable |
| Power supply: |
wallplug adaptor, 8-35 V 10VA |
| Dimensions: |
483x44x166 mm (WxHxD), 19", 1U |
| Case: |
Stainless steel |
| Front: |
Front dark grey |
| Options: |
Transformer balanced outputs |
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