Dangerous Music, Inc.
154 East 2
nd
Street #4
New York, NY 10009
www.dangerousmusic.com
Dangerous MQ Manual1c.doc
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©2004 Dangerous Music, Inc.
Safety Review
Certain precautions should be taken when using electrical products. Please observe the
safety hints by reading the manual and obtaining qualified help if necessary to adhere to
the precautions.
1. Always use a properly grounded power supply cord with this product. Please
do not defeat the ground pin on the mains plug. This connection provides earth to
the chassis and signal grounds inside the device for clean and quiet operation. The
“calibration and internal jumpers” page can help clear up a buzz problem if one
develops.
2. Avoid high temperature operation in equipment racks by providing air
circulation. The number one killer of electronic gear is HEAT. The life
expectancy of electrolytic capacitors (the usual casualty in a heat situation) goes
from 10 or 15 years to 10 or 15 weeks if the temperature
inside
the box is allowed
to rise beyond 140 degrees F. Vented rack panels may look like wasted space to
an interior decorator, but they look like
beauty
to a technician or equipment
designer! If the front panel is hot, it is roasting inside the box.
3. Avoid areas of high magnetic fields. The steel chassis of MQ is designed to
shield the circuits from EMI and RFI (magnetic and radio interference). When
installing equipment in racks, it is prudent to put power amplifiers and large
power supplies at least several rack spaces, if not in a different rack, away from
equipment that deals with low level signals. Separation of high level and low level
equipment can pre-empt trouble caused by heat and EMI.
4. Care should be taken to avoid liquid spills around equipment. If a spill occurs,
please shut off the gear. A qualified technician should investigate accidents to
prevent further equipment damage or personnel hazards caused by spills.
5. Every attempt has been made by the designers to provide versatility in the set-
up and calibration of MQ. As such, there ARE user serviceable jumpers and
calibrations inside. If one is uncomfortable with opening gear and changing
jumpers or making adjustments, please seek qualified help.
6. If adjustments or jumper changes are required, please unplug the power before
opening the top. Dropped screws or tools on a live circuit board can ruin your day
and subsequent damage is not covered by the warranty.
