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The Dangerous Monitor Manual

Thank you for choosing products from

the

exciting line of Dangerous

recording equipment. Many years of dependable and trouble free service can

be expected from our gear. This has been made possible by careful design,

construction, and top shelf component choices by recording industry

veterans. We are committed to providing equipment that brings you the

highest quality for your purchase.

This manual will assist you in the installation and use of the Monitor. There

are helpful hints for safety, grounding, and term

inology that apply to all

recording equipment. Please take a few minutes to read the manual and

familiarize yourself with the outstanding features of your purchase.

Contents

Introduction ………………………. 1

Safety Review ……………………. 2

Overview and hook up …………… 3

Usage Examples ………………….. 5

Meter Wiring ……………………... 6

Balanced Audio Connections……... 7

Internal Jumpers ………………….. 8

Equipment Interface………………. 9

Alignment ………………………… 10

Specifications and Pinouts ………... 11

Summary of content (11 pages)

PAGE 1
The Dangerous Monitor Manual Thank you for choosing products from the exciting line of Dangerous recording equipment. Many years of dependable and trouble free service can be expected from our gear. This has been made possible by careful design, construction, and top shelf component choices by recording industry veterans. We are committed to providing equipment that brings you the highest quality for your purchase. This manual will assist you in the installation and use of the Monitor.
PAGE 2
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. The power supply must be switched to the proper mains voltage. Please check the red window on the power supply’s IEC mains input module to verify the correct setting for your location before connecting the mains plug. 1. Always use a properly grounded power supply cord with this product.
PAGE 3
Overview The Monitor is designed to be the cornerstone of a recording studio by providing a convenient method for listening to and metering the different stages of the recording process. Careful attention to detail has resulted in a unit of stunning ergonomic clarity and unprecedented performance in a compact enclosure.
PAGE 4
The pinout of this connector is in the “Specifications” section of this booklet and there is a circuit example for those who wish to set up a pair of VU meters in the “Metering Circuits” section. The D-MTR jack feeds the selected AES signal to a digital meter or phase scope. The 3rd group of connectors is the ANALOG IN group. There are three stereo inputs selectable by the switch group marked “ANALOG” on the front panel. Note that the fourth switch selects the built in D/A converter.
PAGE 5
Usage Examples The ANALOG switches select from four sources to be listened to. The selected source is sent to the “Functions” group and the “A-MTR” feed on the back panel. The fourth analog selection is a built in D/A converter which is fed by the selected “Digital” switch. The “Functions” group allows channel phase reversal, speaker mutes, mono, volume dim, alternate speaker selection, and a VU meter offset (to keep from thrashing the meter movements when listening to high level program material).
PAGE 6
Meter wiring The “A-MTR” feed is a buffered output designed to drive the VU meters and headphone amp in the MQ metering and cue box. The feed can also drive a standard VU meter circuit. The Monitor’s D/A is calibrated so that a digital sine wave of 1 kHz frequency at -14dBfs will provide a +4dBu signal level. Calibration tones are available from the oscillator in the DAW or a test CD. Standard VU meter circuit The selected Digital Input to be monitored is fed to the “D-MTR” XLR on the rear panel.
PAGE 7
Balanced Audio Connections The beauty of balanced connections is that they promote the idea that current should be prevented from flowing down cable shields while letting the audio pass. Pins 2 and 3 carry a signal across them (transverse mode) and any interference that gets through the shield is picked up equally by the wires (common mode). The common mode noise is canceled by the differential action of the instrumentation amplifiers in the first stage of the Monitor.
PAGE 8
Internal Jumpers Monitor is shipped from the factory with its internal jumpers set to interface with balanced equipment. There are rare cases that certain gear may cause a buzz in the speakers with the factory presets. The following sections have information that can help the installer achieve quiet performance. If one is uncomfortable with opening gear and changing jumpers or making adjustments, please seek qualified help if necessary.
PAGE 9
Equipment Interface The Difference between Grounds and Shields While the usual scenario in hooking up equipment is that one plugs in the cables and starts to work, the more complicated a system, the more likely it is that something will not work correctly as far as hum and noise performance is concerned. While some would blame the equipment, this is the equivalent of blaming the eggs for a bad soufflé.
PAGE 10
Juice will flow down the shields and broadcast hum into the signal wires they were supposed to protect or wind up imposed on the reference ground of the receiving equipment. This situation manifests itself as the all too familiar buzz of a ‘ground loop’. The intensity depends on many variables but can go from unnoticeable to raging. Some people in desperation resort to using AC plug “ground lifts” to defeat the mains safety grounds in a random fashion until the system quiets down a bit.
PAGE 11
Specifications Frequency response ……………………….. 1Hz – 100 kHz within 0.2dB THD+Noise ……………………………….. 0.003% IMD60 4:1 ………………………………… 0.002% Interchannel crosstalk …………………….. -113dB Dynamic range …………………………… 119dB Maximum level …………………………… +27dBu Nominal operating level …………………... +4dBu Power consumption ……………………….. 50 watts Warranty …………………………………... Free 2 year extended warranty with online registration. Standard warranty: 90 days parts and labor, subject to inspection.