Table of Contents
Related Manuals for LaChapell Audio 983M
Summary of Contents for LaChapell Audio 983M
- Page 1 LACHAPELL AUDIO 983M USER GUIDE Single Channel Half Rack Vacuum Tube Preamplifier for Microphones and Instruments Version 1 February 2019 1266 Park Road Chanhassen, MN 55317 952-401-7700 support@digitalaudio.com www.digitalaudio.com...
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Page 2: Safety Instructions
Do not use rough material, thinners, alcohol or other chemical solvents or cloths since this may damage the finish or remove the panel lettering. • The manufacturer cannot be held responsible for damages caused to persons, personal possessions, or data due to an improper use of product. LACHAPELL AUDIO MODEL 983M... -
Page 3: Digital Audio Labs Limited Warranty
We require payment in advance of repair by credit card; we accept Visa and Master Card. In the event the charges are over the minimum charge, DAL will contact you and inform you of the cost of the repair before any work is completed. LACHAPELL AUDIO MODEL 983M... -
Page 4: Table Of Contents
CONTROLS ......................................5 CONTROL DETAILS ................................5 GETTING STARTED ..................................6 983 FREQUENCY RESPONSE ..............................7 HPF - 50HZ ....................................7 HPF - 150HZ....................................7 LPF - 5KHZ ....................................7 LPF - 10KHZ ....................................7 LACHAPELL AUDIO 983M SPECIFICATIONS ........................8 LACHAPELL AUDIO SUPPORT ..............................8 LACHAPELL AUDIO MODEL 983M... -
Page 5: Introduction
BEFORE YOU GET STARTED Please take time to read the information below before you install and use your LaChapell Audio 983M. • UNPACKING: Inspect thoroughly. Although we take extreme care at final assembly and packing, things can happen during transit. -
Page 6: Safety Precautions
• Never position the 983M directly above other heat generating sources such as a power amplifier. • Do not place the 983M in an area where there is a potential for fluids to fall, spill onto or come in contact with the 983M. If you notice fluids or moisture present inside the unit DO NOT turn power on! Contact Digital Audio Labs for direction. -
Page 7: Controls
Typically, this control is used to establish the desired line level after the input gain has been set but it can work interactively with the TUBE DRIVE for a wide array of tonal possibilities. • 48V: The 983M features TRUE48™, a dynamic phantom power supply that provides a 48 volt supply of DC current CREATIVE TIP: for condenser microphones. - Page 8 MOUNTING A SINGLE 983M UNIT To mount a single 983M unit in a 19” rack with the Rack Mount Kit, position the L Brackets as shown in the image above. The brackets will attach to the 983M with 2 mounting screws per side. Using the Hex Tool, screw two Mounting Screws into the provided holes on either side of the 983M.
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Page 9: Getting Started
25%, and the PAD off, you will get incredible tube harmonics and natural tube compression. This would be a great starting position for those wanting to hear what the 983M’s harmonics are all about. It’s also a great place to start when using ribbon or dynamic mics. -
Page 10: 983 Frequency Response
983M FREQUENCY RESPONSE HPF - 50HZ HPF - 150HZ LPF - 5KHZ LPF - 10KHZ LACHAPELL AUDIO MODEL 983M... -
Page 11: Lachapell Audio 983M Specifications
LACHAPELL AUDIO 983M SPECIFICATIONS Internal Gain (microphone) 72.5dB Internal Gain (Hi-Z) 53.8dB Max output gain +27.8dBu (1% THD+N, 22Hz - 20kHz) Frequency Response 9Hz - 40kHz Variable: 0.01% - 18% (per tube drive (input) gain control THD+N with -40dBu input at 1Khz) - Page 12 ® 2014, 2015 Digital Audio Labs. ™ & © 2017, 2018 Digital Audio Labs. Patents pending.