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Dangerous Music 2-Bus Manual

3

Overview

The 2-Bus is a 16x2 summing amplifier designed to help the users of digital audio
workstations achieve better mix performance through the use of cutting-edge analog
circuit design in conjunction with the existing equipment in their studios. The designers
and their colleagues have noted that while DAWs offer unprecedented flexibility in
multi-track recording and editing, the resulting mixes from these systems generally don’t
equal those of high-end analog recording systems in terms of sound quality, preservation
of spatial detail, headroom and ‘no latency’ ergonomics. In today’s portable environment
and with the cost of maintaining and housing legendary recording equipment, the choice
of a big desk is impractical for many users of DAW systems. We want to bring together
the best of both worlds. It is in this spirit that the Dangerous engineering team is
designing and manufacturing an exciting array of summing, mixing, monitoring,
metering, and mastering equipment to meet the needs of today’s recording engineers,
producers, and artists.

Hook up

The 2-Bus is designed to mix the outputs of up to 16 D/A converters to any stereo
recorder (16x2).  The 2-Bus is easily stackable to increase channel numbers and system
functions when linked with other 2-Busses, Monitor, Monitor ST or 2-Bus

 LT.

 All of the

XLRs are pin 2 hot, and the connector groups are described as follows:

INPUT

The inputs are arranged into eight pairs of XLRs. They can be plugged

into directly from the D/A converters but system flexibility (and fun) goes way up with
the addition of a patch bay for ease of outboard equipment use.

OUTPUT

There are two stereo outputs on the 2-Bus. The 

Main

 output goes to the

mixdown recorder or A to D converter (or through mix buss compressors/EQs first, if
desired). The 

Mon

itor output is identical to the main and is intended to feed a monitor

controller (Dangerous 

Monitor 

or

 Monitor ST.

).

REM/EXP

The 

rem

ote/

exp

ansion connector allows for expandability of the system.

The 2-Bus has a mix buss input on this connector to stack multiple 2-Buses or link with a
2-Bus 

LT

. The pinout is on the Connector Pinouts page (p.10).

DC IN

There is a grey power cable to hook the 2-Bus to its power supply. It is

best to make sure that the power supply is off or unplugged when connecting the DC
power cable to prevent damage to contacts in the connectors.

Summary of Contents for 2-Bus

Page 1: ...possible by careful design construction and top shelf component choices by recording industry veterans This manual will assist the user with installation of the 2 Bus as well as calibration of the sy...

Page 2: ...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 troubl...

Page 3: ...p The 2 Bus is designed to mix the outputs of up to 16 D A converters to any stereo recorder 16x2 The 2 Bus is easily stackable to increase channel numbers and system functions when linked with other...

Page 4: ...sing if desired and then the 2 Bus This mix has 8 tracks of drums one bass two guitars one vocal with reverb and effects for maybe 2 dozen tracks total Usually a DAW user would mix this to 2 tracks an...

Page 5: ...istent mix results will be obtained if this is done There are two levels that most digital recording systems have seemed to converge on depending on whether the situation is for recording or mastering...

Page 6: ...to offer In other words A D s are set to avoid clipping for recording and D A s are set to avoid overloading the mixdown converter This is done by aligning one D A at 18dBfs and using it to calibrate...

Page 7: ...tage of the 2 Bus Signal gets through and the grounds stay put inside their respective pieces of gear Unbalanced Audio Connections An unbalanced source driving a 2 Bus input usually presents no proble...

Page 8: ...zz troubles in a recording studio While the techniques are not meant to be taken as Gospel some techs might disagree with this treatise so be it these bits of knowledge were gleaned from decades of ex...

Page 9: ...ny 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...

Page 10: ...e have not seen Pin 1 hot except after too many drinks The AC Mains cable The mains cable uses a standard IEC connector Please check the mains voltage selector the little red window next to the IEC co...

Page 11: ...Hz Noise floor 83 dBu audio band limited Maximum signal level 27dBu Nominal operating level 4dBu Input impedance 12k ohms bridging Output impedance 50 ohms Gain accuracy 0 02dB for any setting Power c...

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