Benchmark DAC1 HDR Manuál s instrukcemi stáhnout pdf (Strana 20)

DAC2 Series Instruction Manual Rev C Page 20

Outputs

Analog Outputs

The DAC2 has one pair of balanced XLR

outputs and two pairs of unbalanced RCA

outputs.

The DAC2 features high-current output

drivers that are capable of driving 300-Ohm

loads without an increase in distortion. They

are also well suited for driving long cables or

high-capacitance loads.

Balanced XLR Analog Line Outputs

The Left and Right balanced outputs use

Neutrik™ gold-pin male XLR jacks. The XLR

shell and pin 1 (ground) are both directly

bonded to the chassis to prevent currents in

the internal ground system. This direct

bonding also maximizes RF shielding.

The XLR outputs have passive attenuators

that allow direct connections to a wide variety

of audio devices without a loss of dynamic

range. The 10 or 20 dB pads are usually

required for direct interfacing to power

amplifiers and powered speakers. The DAC2

ships with the 10 dB pads enabled. A full

description of the output attenuators and

instructions for configuration is located in the

Internal Setting section of this manual.

Industry-standard XLR wiring:

XLR pin 2 = + Audio Out

XLR pin 3 = - Audio Out

XLR pin 1 = Cable Shield

CAUTION: If the balanced XLR outputs

are wired to an unbalanced input (using

a special adapter cable), pin 3 must be

left floating. Shorting pin 3 to ground

will increase the temperature of the

output drivers, will increase power

consumption, and may cause distortion.

Unbalanced RCA Analog Outputs

The Left and Right unbalanced outputs use

standard RCA style jacks. The ground

connections are bonded to chassis ground at

the location where analog ground is bonded

to the chassis. This minimizes the effects of

ground loops caused by AC currents in the

cable shield.

TIP: Mono summing with an RCA ‘Y’

cable is not recommended as this will

cause high amounts of distortion. Mono

summing with a ‘Y’ cable can be

accomplished with the use of a modified

cable by implementing a 1k Ohm series

resistor in each leg of the ‘Y’.

Note: The XLR pads do not have any effect

on the level of the RCA outputs.

The RCA output impedance is very low (30

Ohms). This makes these outputs well suited

for driving high-capacitance loads and/or

high-capacitance cables.

TIP: The RCA outputs are capable of

driving cables as long as 1360 feet (see

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