The Rear Panel - Prolude Amplification BHN450 User Manual

5.2 The rear panel

5.2.1 Mains
The mains appliance inlet. You must use standard earthed mains cord.
Important!
This equipment should only be connected to 230VAC, 50Hz mains network!
The mains plug must be plugged into an appropriate outlet that is properly installed and grounded!
5.2.2 FX Loop
Insert your effects between these jacks. FX Send is output, FX Return is input. If you connect your tuner into
this FX Send output, you can tune your instrument silently usig the Mute button.
5.2.3 Active 2
Input jack for active instruments. You can connect e.g. your wireless receiver on the back of the amp. It can
be very helpful when your equipment is mounted in rack case.
5.2.4 Speaker Outputs
Neutrik Speakon-Jack combo outlets. They are conntected parallel inside the amplifier. Both speakon or
6,3mm jack plugs are suitable to connect speaker cabinets.
One 4ohms or one 8ohms or two 8ohms cabinets can be used. Note that the minimum load impedance
should not be less than 4ohms.
Note:
The speakon connector is a more stable, robust and reliable solution. Use this - if you have one - instead of
jack! Avoid long speaker cables and low quality plugs in order to maintain sound quality and volume.
The amplifier can be used without speakers as well.
Warning!
There is dangerous voltage on the speaker output! Connect the cabinets to the amplifier before switching on
and do not touch the hot pole of the speaker jack!
5.2.5 Ventilation cutouts
Do not cover the ventilation cutouts! Insufficient ventilating causes overheating, which can cause permanent
damage to the power stage.
Note:
Overheating or fault of power stage is displayed by the Mute LED.
If this occurs, switch off the amplifier, wait for 30 minutes before then switching it on again! If the Mute LED
stays lit after the ventilator test /4-5 seconds/ then the amplifier has to be brought to a qualified technician for
repair.
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