5
2
DESCRIPTION
TOP PANEL
MONO INPUTS: Four 1/4” TS unbalanced jacks labeled 1 - 4, for connection to
line-level sources such as a mixer’s auxiliary sends or monitor
sends.
EFFECTS SEND: 1/4” TS unbalanced jack for connection to the input of a signal
processor such as a reverb or multi-effects processor.
STEREO INPUTS: Two 1/4” TRS balanced jacks for connection to a line level
source such as a mixer’s cue send or headphone output.
The Left input is the MONO input and will feed both the right and
left channels.
EFFECTS RETURN: Two 1/4” TS unbalanced jacks for connection to the output of
a signal processor such as a reverb or multi-effects processor.
The Right input is the MONO input and will feed both the right
and left return channels.
The Left input is STEREO and requires a Tip-Ring-Sleeve plug if
it is to be used alone.
EXPANSION: 25-pin connector - contains all the input signals; the four mono
inputs, the main stereo inputs, the effects returns and the power.
It connects to the Rolls HM58 or HM59 Headphone Monitor
Remote units. Consult their respective owners manuals for more
information on connecting and operating them properly.
120VAC: Power cord - connect to a properly grounded ac outlet.
FRONT PANEL
EFFECTS SENDS: These controls adjust the level of signal sent from the
corresponding input to the EFFECTS SEND jack.
EFFECTS RETURN: Adjusts the level of stereo signal returning from a signal
processor (or whatever is connected to the Effects Return jack(s).
These inputs may also be used as an additional set of stereo
inputs.
MIX LEVELS: Controls 1 - 4 and Main; adjust the level of input signal from the
corresponding input.
MASTER LEVEL: Adjusts the amount of mixed signal sent to the Mix Output
jacks.
EQUALIZER: These slider controls adjust the level of the indicated frequency. For
example, the 64 slider boosts or cuts the 64 Hertz component of
the output signal by + or - 12 dB.
PWR: Indicates that the HM60 is connected to a power source and is on.
BOTTOM PANEL
MIX OUTPUT:
Phone/Left:
For connection to a set of stereo headphones. If a mono Tip-
Sleeve plug is connected, this jack becomes the Left Output.
Right:
Contains the Right portion of the Output signal.
AGC COMP: This switch engages the Automatic Gain Control compressor.
BLOCK DIAGRAM
Unbal
FX Send
L
R
L
R
4
3
2
1
TRS
Balanced
Inputs
TRS
Balanced
Main
Inputs
Unbal
FX
Returns
MONO MIXES
FX
RETURN
MAIN LEVEL
EQUALIZER
EQUALIZER
2:1
COMPRESSOR
2:1
COMPRESSOR
Headphone
Output
COMRPESSOR
IN/OUT
FX SEND LEVELS
MASTER
OUTPUT
LEVEL
DB25
MULTI-PIN
CONNECTOR
-V
+V
