User’s Guide HDSP System RPM
© RME
16
8.8 Analog Outputs
All the RPM's outputs are short circuit protected and low impedance types.
The outputs 1/2 are provided as both RCA jacks (unbalanced) and as stereo TRS jacks
(balanced). The electronic output stage does not operate servo-balanced! A connection of
unbalanced devices using monaural TS-jacks should be avoided, as power consumption and
distortion of the RPM may slightly rise. However, the unit won't be damaged by this.
The maximum output level at the RCA jacks is +8 dBu, equalling 2 V RMS. With this, the RPM
is compatible to both Hi-Fi units and professional studio equipment. Lowering the output level
by TotalMix up to –10 dB, to match the inputs of lower level devices, does not cause a reduced
playback quality, because the DA-converters offer lots of dynamic range headroom by their
Signal to Noise of about 110 dB.
The maximum output level at the TRS-jacks is +14 dBu, equalling 4 V RMS. Thanks to this
high-level balanced output, the RPM can be connected to mixing desks, stage boxes, well even
directly to power amplifiers.
The RCA outputs 3/4 have the same technical data as outputs 1/2.
The headphone output at the front uses a doubled driver stage, to provide sufficient volume
even with low-impedance headphones. All other techical data equal the ones of the RCA
outputs 1/2/3/4. The VOL pot allows a stepless adjustment of the output level directly at the
unit.
The headphone output can also be
used as additional hi-quality line
output. A simple a simple cable
adapter stereo TRS-jack to 2 x RCA is
needed, see picture to the right, is
required then.
The pin assignment follows
international standards. The left
channel is connected to the tip, the
right channel to the ring of the TRS
jack/plug.
