Manley СORE REFERENCE CHANNEL STRIP - MCORE001-025 4/2014 Manual de usuario descargar pdf (Pagina 12)

VR15 VR12 VR16

GR-METER

LIM CV

LIM REF V

OP1 ZERO VU

Diagram 8

14. Servicing

VR11

VR9

VR6

GR-ZERO

12AX7WA

6922

GR-AUDIO

TUBE LOCATION

CALIBRATION TRIM POT LOCATION

c o r e

The CORE requires calibration for 3 sections of its circuitry:

I) - VU METER- Adjust: +4dBu (1.228 Volts RMS) = “0” VU, Meter “GR” zero set

ii) - ELOP COMPRESSOR- Adjust: Gain Reduction (Audio & Meter GR)

iii)- FET PEAK LIMITER- Adjust: reference voltage & FET control voltage

Tools required:

- Audio Tone Generator (oscillator)

- Audio Analyzer or a voltmeter capable of reading both DC & AC voltages.

Initial settings:

- Mic/Line Input select switch: Out = LINE IN Enable

- 120Hz HP filter switch: Out = Disable

- Gain switch: Out = LOW

- 48V Phantom switch: Out = OFF

- Phase Invert switch: Out = 0

- Input Level Attenuator: Set at Minimum

- Compressor Section: Switch = Bypass; Compression, Attack & Release =12:00 O'clock

- Shelving EQ section: High/Low controls set both = 12:00 O'clock.

- Mid EQ section: Boost/Cut control = 12:00 o'clock, Frequency range select switch = 100Hz-1kHz,

Frequency sweep control = MIN

- Peak Limiter section: Limiting = MIN, Release = 12:00 o'clock

- Output Gain Control: 12:00 o'clock

15. Core Calibration Procedure

2A (T) FUSE

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Manley СORE REFERENCE CHANNEL STRIP - MCORE001-025 4/2014 Manual de usuario Pagina 12