Nilfisk Alto HPA6 User Manual
8
4.3 Rack
ounting
M
The most secure mounting is on a universal rack shelf available from various rack manufactures or your music
perature devices such as power amplifiers etc. to avoid overheating.
5. APPLICATION
be able to fully exploit the HPA6 6-Channel Headphone Amplifier.
5.1 Use the HPA6 as a Headphone Amplifier
This is the basic application for HPA6 6-Channel Headphone Amplifier.
While using the HPA6 as a Headphone Amplifier, please apply the program source to Main / Direct In Inputs, and
connect the headphone cable to one of the appropriate outputs. Ensure the Balanced Control adjusted to the complete
counter-clockwise position, and turn up the Input Gain control. The Input Gain control is used to boost or attenuate
the general volume of all the headphones, while the individual Output Gain controls are used to set the desired
channel volume.
connect the headphone cable to one of the appropriate outputs. Ensure the Balanced Control adjusted to the complete
counter-clockwise position, and turn up the Input Gain control. The Input Gain control is used to boost or attenuate
the general volume of all the headphones, while the individual Output Gain controls are used to set the desired
channel volume.
Three headphones can be connected per channel each time, but, please be sure that the resulted connection impe-
dance must over 100ohms, otherwise, the output amplified signal may sound a little offensive, in terms of long time
fault condition usage, the headphone amplifiers will be finally damaged or distorted.
dance must over 100ohms, otherwise, the output amplified signal may sound a little offensive, in terms of long time
fault condition usage, the headphone amplifiers will be finally damaged or distorted.
If you still need further headphone ports or more groups headphone amplifier, please interlink any number of HPA6
via the Main outputs.
via the Main outputs.
In parallel with the Headphone Output on the rear panel, the Headphone Output on the front panel is also used to
output the signal of the individual channel, such function proves to be very useful esp. in the rack mounting application.
output the signal of the individual channel, such function proves to be very useful esp. in the rack mounting application.
Balanced
Tip
Ring
Sleeve
Tip
Ring
Ring
Sleeve
Tip
Ring
Sleeve
1
2
3
1
2
2
3
1
2
3
2
3
TIP RING SLEEVE
SLEEVE RING TIP
TIP RING SLEEVE
2
1
3
1
2
3
1
2
3
Unbalanced
Tip
Ring
Sleeve
Tip
Ring
Ring
Sleeve
Tip
Sleeve
Tip
Sleeve
Tip
Sleeve
Cent e
r
Cent e
r
Centre
Screen
Screen
Screen
1
2
3
3
Tip
Ring
Sleeve
1
2
3
1
2
3
2
3
TIP SLEEVE
TIP SLEEVE
TIP RING SLEEVE
TIP RING SLEEVE
1
2
3
2
1
3
2
1
3
Tip
Ring
Sleeve
1
2
3
2
3
Tip
Sleeve
1
2
3
2
3
TIP RING SLEEVE
TIP SLEEVE
1
2
3
1
2
3
SLEEVE TIP
SLEEVE RING TIP
dealer. The HPA6 6-Channel Headphone Amplifier fits into one standard 19" rack unit of space. Please allow at
least an additional 4" depth for the connectors on the rear panel. Be sure that there is enough air space around
the unit for sufficient ventilation and please do not place the HPA6 6-Channel Headphone Amplifier on high tem-
least an additional 4" depth for the connectors on the rear panel. Be sure that there is enough air space around
the unit for sufficient ventilation and please do not place the HPA6 6-Channel Headphone Amplifier on high tem-
This section introduces some typical applications of your
LTO HPA6 6-Channel Headphone Amplifier. Please reserve
your time to well understand the control elements ( see Chapter 3 ) and the following application examples, so as to