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DISMANTLING / JUMPER SETTINGs
Hint:
Here we are talking about internal adjustments inside your HPA V181.
You are in need of two screw drivers TORX style size T8 and T10.
You should by all means
PULL THE MAINS PLUG !!!
Only thereafter the settings can be altered without any hazard.
DISMANTLING
As the 4-pin XLR socket is fixed to the back side of the front panel,
the front panel may NOT be disassembled !!
To avoid damages please follow the instruction below:
1. screw off both upper screws on the front panel
2. screw off both upper screws on the back panel.
3. unscrew ALL remaining screws on the back panel by 1/10 “ (2-3 mm)
4. now lift the upper lid
5. make your personal jumper settings
5. assemble the unit in reverse order
Frequency bandwidth limiting
Your HPA V181's upper frequency limit is 200 kHz - the so-called "3-dB
point" - at which signal level drops by 3dB. This limit is high enough to
exclude any effect on the audible spectrum on the one hand, but low
enough to provide sufficient rejection of possible radio-frequency
interference.
