DRAWMER MX40 QUAD PUNCH GATE OPERATORS MANUAL CONTENTS SAFETY CONSIDERATIONS page 3 INSTALLATION page 3 INTRODUCTION • Audio Connections • Power Connection page 4 page 4 page 5 CONTROL DESCRIPTIONS • Punch Gate • Key Filter • Linking page page page page OPERATION page 8 IF A FAULT DEVELOPS CONTACTING DRAWMER page 12 page 12 TECHNICAL SPECIFICATION page 13 BLOCK DIAGRAM page 14 SESSION RECALL page 15 1 6 6 7 7
COPYRIGHT This manual is copyrighted © 2011 by Drawmer Electronics, Ltd. With all rights reserved. Under copyright laws, this manual may not be duplicated in whole or in part without the written consent of Drawmer. ONE YEAR LIMITED WARRANTY Drawmer Electronics Ltd., warrants the MX40 Quad Punch Gate to conform substantially to the specifications of this manual for a period of one year from the original date of purchase when used in accordance with the specifications detailed in this manual.
DRAWMER MX40 Quad Punch Gate SAFETY CONSIDERATIONS CAUTION - M AINS FUSE TO REDUCE THE RISK OF FIRE REPLACE THE MAINS FUSE ONLY WITH THE SAME TYPE, WHICH MUST BE A CLASS 3, 230 VOLT, TIME DELAY TYPE, RATED AT 63mA WHERE THE MAINS INPUT VOLTAGE SWITCH IS SET TO 230 VOLTS AC. AND 125mA WHERE THE MAINS INPUT VOLTAGE IS 115 VOLTS AC. ALL FUSES MUST COMPLY WITH IEC 127-2. THE FUSE BODY SIZE IS 20mm x 5mm. CAUTION - MAINS CABLE DO NOT ATTEMPT TO CHANGE OR TAMPER WITH THE SUPPLIED MAINS CABLE.
INTRODUCTION The MX40 is a highly flexible but compact quad Gate suitable for a wide range of professional applications including studio, live sound and audio installations. The input and output connections are electronically balanced on XLR connectors and low-distortion VCAs are used to maintain the highest possible signal quality. Although optimised for +4dBu operation, the MX40 will work equally well with systems operating at the -10dBu standard.
POWER CONNECTION If, for some reason, the unit is to be operated at a mains input voltage which is different to that as supplied, the following procedure must be carried out by a qualified technical engineer. 1: Disconnect the unit from the mains. 2: Using a number 1 size pozidrive screwdriver, remove the seven self-tapping screws that retain the top cover. Accessing the internal power switch and fuse 3. Set the voltage rating and replace the fuse. 4. Replace the cover.
CONTROL DESCRIPTION The four channels of the MX40 are virtually identical and may be used completely independently or linked as pairs for stereo-channel operation. In the linked stereo mode, only the controls of channel 1 and channel 3 are functional and serve as master controls, though all the channel Bypass, Key Listen and Range switches remain independent. W hen linked, the control signal is derived only from the programme material present at the input of the master channel.
Key Filter Key Listen In normal operation, the filter only affects the way the MX40 responds to the incoming programme material - it does not have any direct effect on the output signal, but when Key listen is enabled, the effect of the key filter on the programme material is heard at the output. These switches are independent of any linking and enable Key Listen of only their respective channel. Trigger Freq. 50Hz to 8KHz with a width (or ‘Q’) of one octave.
OPERATION Use the following diagrams as a guide to using the MX40.
Triggering a Bass Guitar from a Kick Drum 9
Adding Depth to a Kick Drum 10
Gating all Four Channels using Channel 1 as the Trigger 11
IF A FAULT DEVELOPS For warranty service please call Drawmer Electronics Ltd. Or their nearest authorised service facility, giving full details of the difficulty. On receipt of this information, service or shipping instructions will be forwarded to you. No equipment should be returned under the warranty without prior consent from Drawmer or their authorised representative. For service claims under the warranty agreement a service Returns Authorisation (RA) number will be given.
TECHNICAL SPECIFICATIONS (All measurements reference +4dBu operating level) INPUT IMPEDANCE 20KÙ (Balanced) KEY INPUT IMPEDANCE 20KÙ (Unbalanced) INPUT CMR >-40dB MAXIMUM INPUT LEVEL +21dBu MAXIMUM KEY INPUT LEVEL +21dBu OUTPUT IMPEDANCE 50Ù (Balanced) MAXIMUM OUTPUT LEVEL +21dBu BANDWIDTH <10Hz to 22KHz -1dB NOISE Wideband (worst case) 22Hz - 22KHz AV -100dB -105dB RMS -104dB -106dB DISTORTION Gate Open with +4dBu input 100Hz 1KHz 10KHz < 0.04% < 0.02% < 0.
BLOCK DIAGRAM 14
