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single channel microphone preamplifier

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all contents © Grace Design/ Lunatec LLC

owner’s manual Rev A

2434 30th Street, Boulder, CO 80301 USA 

tel 303.443.7454 fax 303.444.4634

[email protected] / www.gracedesign.com

Summary of Contents for m101

Page 1: ...channel microphone preamplifier m101 all contents Grace Design Lunatec LLC owner s manual Rev A 2434 30th Street Boulder CO 80301 USA tel 303 443 7454 fax 303 444 4634 info gracedesign com www gracedesign com ...

Page 2: ...owners manuals and technical documents Grace Design has been building audiophile quality products for the recording industry over 15 years The technology in the m101 is the result of extensive listening field testing and careful refinement Your new m101 preamplifier represents a combination of absolutely pristine audio performance robust mechanical construction and bombproof reliability at a reaso...

Page 3: ...ansportation temperature range 40 C to 70 C Maximum altitude 3000m 9843 ft Equipment suitable for continuous operation Weight preamplifier 1 09kg 2 4lbs SAFETY MARKING SYMBOLS CAUTION READACCOMPANYINGDOCUMENTS This symbol located on the equipment and in this manual refers to important instructions Read this manual thoroughly before operating this equipment WARNING ELECTRICALSHOCKHAZARD This symbol...

Page 4: ...together in a standard 1U rack tray Sealed gold contact relays for signal switching High precision active balanced output circuit No electrolytic capacitors in the signal path Ultra clean 48 Volt phantom power Minimal internal signal wiring Built in universal AC power supply no wall wart 5 year warranty on parts and labor Made in the USA front panel FEATURES 1 4 TRS instrument HI Z input For high ...

Page 5: ...to the m101 with a voltage range of 100 240V 50 60Hz A standard three prong AC power cable is included with the m101 For safety the power supply cord must be connected to a grounded outlet UNBALANCED OUTPUT Unbalanced TS output connector This output is wired tip signal sleeve ground All three outputs on the rear panel can be used simultaneously BALANCED TRS OUTPUT Balanced TRS output connector Thi...

Page 6: ...ar panel mic input connector to the front panel TRS jack The input impedance of the instrument input is 1M Ohm unbalanced and 2M Ohm balanced which is ideal for inserting high impedance sources such as guitars with passive pickups as well as any instrument with a high level output Please note that the gain range of the preamplifier when using the instrument input is 10dB to 55dB OPERATING THE m101...

Page 7: ...om power is on and then the ribbon mode is engaged there will be a momentary delay before the m101 enters ribbon mode This is because the m101 logic circuitry waits for the 48V at the mic input to discharge before enabling ribbon mode Likewise if you are in ribbon mode and the 48V switch is on then phantom power will turn on immediately if the ribbon mode switch is released In general it is best p...

Page 8: ...Recorder Converter DAW Soundcard Interface Mixer PA system TRIM GAIN ribbon HPF 48V HIZ 10dB 65dB 0dB 10dB PUSH Pb LEAD FREE RoHS COMPLIENT 100 240VAC MIC IN BAL OUT UNBAL OUT BAL OUT GRACE DESIGN BOULDER CO USA 5W MAX Instrument Amplifier Basic Wiring Diagram XLR Balanced Output to 1 4 Unbalanced input The following is a basic overview of some of the more common wiring possibilities for the m501 ...

Page 9: ...IATION HPF off 50Hz 25kHz 6 FREQUENCY RESPONSE Mic input 40dB Gain 3dB 4 5Hz 390kHz Mic input 40dB Gain 0 5dB 10 5Hz 140kHz Hi Z input 20dB Gain 3dB 2 5Hz 195kHz Hi Z input 20dB Gain 0 5dB 6Hz 74kHz IMPEDANCE Mic input 8 1kΩ Mic input Ribbon mode 20kΩ Hi Z input unbalanced 1MΩ Hi Z input balanced 2MΩ Balanced Output 300Ω Unbalanced Output 150Ω PEAK LED METER Green threshold 14dBu Red threshold 16d...

Page 10: ...heir distributor for warranty product return details In order for Grace Design to provide efficient and timely warranty service it is important that you mail the completed warranty registration card enclosed with all of our products within 10 days of the original date of purchase You may also register your product directly with Grace Design by telephone 303 443 7454 Monday Friday 9 00am to 5 00pm ...

Page 11: ...m 101 page 11 Revision Page Change Date Initials A all 4 7 08 edg Manual Revisions ...

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