IMPORTANT: You should never turn your amplifier on without having it connected to a speaker load that matches the
impedance selected on the rear of the amplifier. If you do, you risk damaging the output transformer and thus voiding your
warranty.
NOTE: It is recommended that all audio cables, except for the speaker lead, used to connect to the amplifier are of a high-
quality screened type. These should not exceed 10 meters in length.
*Always use a non-screened speaker lead when connecting a speaker cabinet to this amplifier.
Impedance Information:
Before you decide to connect your amplifier to your speaker cabinet, you will want to know about impedance first!
Impedance is the electronic load that the speaker puts on the power amplifier and is measured in Ohms. (Ω)
RULE OF IMPEDANCE:
• When two speakers are wired, “parallel” the total impedance is cut in half and when two speakers are wired in “Series” the
total impedance is the sum of the speakers’ individual impedance.
For example:
Two 8Ω speakers wired in parallel become 4Ω. Two 8Ω speakers wired in series are 16Ω.
• The actual impedance of your cabinets could be different than the individual speaker’s impedance.
• Make sure that the correct impedance is selected on the back of the amplifier to match the cabinet’s impedance (speaker
configuration) you are using. Be sure to check the manufacturer’s recommended impedance for the cabinets you are using
to avoid any damage to your amplifier and voiding your warranty.
• If you use more than one cabinet, the cabinets must all be of the same impedance.
For example:
If you use two cabinets, then if one cabinet is 16 ohms (Ω), the other cabinet must also be 16 ohms (Ω).
If the cabinets are not of the same impedance then you will damage the output transformer and void the warranty.
5. Impedance Selector: The impedance selector switch allows you to set the
amp to 4, 8 or 16 ohms. Set this switch correctly depending on your speaker
cabinet(s) impedance. Setting this switch incorrectly can cause damage to
the amp and VOID YOUR WARRANTY! There is more information on how to set
impedance in the following section.
6. Speaker Jacks: There are two parallel speaker jacks for convenience in setting
up your amplifier with your speaker cabinets.
7
OUTPUT
5
6
Illust. 2
CONNECTING YOUR AMPLIFIER TO A SPEAKER CABINET
Hiwatt.co.uk
