General Information; Operating Instructions (Fig . 1 / 2) - PROEL HPAMP106 Notice D'utilisation

GENERAL INFORMATION

Thank you for having chosen a PROEL product .
The HPAMP106 is a 6-channel Headphone Amplifier boxed in a 19" rack mountable metal chassis, including up to 6
independent high-power amplifier sections suitable for virtually any type of headphones,
HPAMP106 features 4 selectable main stereo/mono inputs with ¼" JACK connectors (REAR panel) . The signal is
amplified and sent to 6 stereo headphone outputs with individual level controls, input selector and ¼" JACK connectors
(FRONT panel), each one with +13dB max output level (per channel) . Each output is capable of driving 16 ohm output
load impedance . HPAMP106 is powered by a Built-in power supply with shielded transformer and voltage selector .
OPERATING INSTRUCTIONS (FIG. 1 / 2)
1. HEADPHONES stereo jack outputs
These are the 6 STEREO JACK connectors for the headphones output: only stereo headphones with a minimum
impedance of 16 Ohms should be connected to these outputs . The stereo jack connectors are wired as follow:
Tip = positive LEFT channel signal
Ring = positive RIGHT channel signal
Sleeve = common negative shield or ground for both channels
2. VOL headphones volume controls
These controls set individually the level of each HEADPHONES output . The signal of the 6 outputs is selected between
the four inputs .
3. INPUT SEL input channel selectors
Using these selectors you can choose which one of the 4 available inputs is sent to the respective headphones output.
In the OFF position no input is selected.
4. PWR indicator
BLUE LED: when lighted indicates that the HPAMP106 has been turned on and AC power is available .
5. INPUT - LEFT (MONO) jack
These are the 4 JACK connectors for the four stereo channel inputs . Each LEFT (MONO) is a female jack connector, which
accepts a JACK plug from almost any line level equipment with a balanced or unbalanced outputs . If the correspondent
RIGHT jack is not inserted, the channel operate like a MONO channel with the LEFT (MONO) input as a single signal
source . The JACK input is wired as follows:
Tip = + positive or "hot"
Ring = - negative or "cold"
Sleeve = shield or ground
When connecting an unbalanced signal, wire them as follows:
Pin2 / Tip = + positive or "hot"
Pin 1-3 / Sleeve = shield or ground
NOTE: whenever possible, use always balanced cables. Unbalanced lines may also be used but may result in noise over
long cable runs. In any case, avoid using a balanced cable for one channel and an unbalanced one for the other.
6. INPUT - RIGHT jack
This is a JACK connector, which accepts a balanced or unbalanced line level input signal from almost any source . This is
used only in presence of LEFT jack input to use the channel as STEREO . Wiring is the same of previous point .
7. LINE VOLTAGE selector
This switch sets the AC voltage line of your country (usually it is set by factory and isn't necessary to change it) . The 115V
setting is for mains line in the range of 100-120V~ and 230V setting is for mains line in the range of 210-240V~.
WARNING: an incorrect setting of AC LINE VOLTAGE could damage seriously the internal electronics!
8. POWER switch
HPAMP106 is "ON" when the switch is in the "I" position.
9. FUSE holder
Here is where the mains protection fuse is placed.
REPLACE THE PROTECTION FUSE ONLY WITH SAME TYPE AS SHOWN ON THE PRODUCT.
IF AFTER THE SUBSTITUTION, THE FUSE INTERRUPTS AGAIN THE APPARATUS WORKING, DO NOT TRY AGAIN
THEN CONTACT THE PROEL SERVICE CENTER.
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