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Summary of Contents for Heritage Audio DMA 73
- Page 1 DMA 73 DUAL CHANNEL MICROPHONE PREAMP, CLASS A RACKMOUNT USER MANUAL August/2022 Rev. 1.0.
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Page 2: Table Of Contents
Heritage Audio - Madrid, Spain © 2022 Heritage Audio S.L. is the sole owner of the copyright of all information and drawings contained in this manual which are not to be copied or reproduced by any means or disclosed in part or whole to any third party without written permission. -
Page 3: Description
The Heritage Audio DMA 73 is a true dual 3-stage 73-style mic preamp in a 1 rack unit format. Added to the accurate vintage features, there are some key ones for covering all the needs of modern producers, engineers and musicians. -
Page 4: Getting Started
GETTING STARTED FRONT INPUT GAIN SWITCH D.I. INPUT D.I. PHANTOM POWER HIGH PASS FILTER 5 dB Steps From 30 to 80 High Impedance Class A JFET Switch to actívate the D.I. input Activates 48 V -3 dB at 82 Hz, Discrete Class OUTPUT ATTENUATOR MIC INPUT IMPEDANCE LINE... -
Page 5: Applications
APPLICATIONS CONDENSER MIC - L CONDENSER MIC - R ACTIVATE +48 V FOR CONDENSER MIC USB - COMPUTER OUTPUT - R OUTPUT - L MIC INPUT L MIC INPUT R LINE INPUTS - AUDIO INTERFACE D.I. USB - COMPUTER D.I. INPUT - L D.I. -
Page 6: Specifications
• Power consumption: 88 mA per rail @ ± 16 V DC. (External linear PSU to avoid electromagnetic radiation into the audio transformers (a.k.a. hum). • Dimensions DMA 73 (W x H x L): 482 mm x 44 mm (1 Rack unit) x 184 mm. • Weight: 3,4 Kg. -
Page 7: Trouble Shooting
This will reduce the input by 20 dB ahead of the input transformer. Condenser microphones don´t seem to work with DMA 73. Make sure the red +48 V button is pressed in to activate the phantom power sent to the microphone. -
Page 8: Warranty Statement
2 years to the original purchaser. In the event of such defects, the product will be repaired without charge or, at our option, replaced with a new one if delivered to Heritage Audio prepaid, together with a copy of the sales slip or other proof of purchase date. -
Page 9: Recall Sheets
RECALL SHEETS... - Page 10 HERITAGE AUDIO. C/ Alfonso Gómez, 38, 3C. 28037 Madrid – Spain. Tel: +34 917 266 189 info@heritageaudio.com...
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