HV™65 Back Panel
Jacks located on chassis bottom in sequence shown above
1.) External Speaker - this is a 2-conductor 1/4" speaker output jack. Rating is 8 ohms minimum. The signal path to the internal speakers is disconnected when using this jack. Make absolute sure that a 2-conductors speaker cord is used and it is plugged in to the external speaker cabinet before plugging into this jack. Failure to do so could result in electrical shock or damage to the amplifier. It is also highly recommended to turn off the AC mains power to the amplifier before plugging or unplugging any speakers to this jack.
2.) Direct (SPKR Emulated) - this is a 3-conductor. XLR output jack for plugging into Lo-Z microphone inputs as found on PA or recording mixers. It is intended in place of external mics or used as a built-in direct box. Great effort was made in emulating the actual speaker sound.
3.) Effects Return - This switching 2-conductor 1/4" line level input jack is the return from an external signal processor such as a digital delay or EQ. By using this jack, you break the signal path between the preamp output and power amp input.
4.) Effects Send - this 2-conductor 1/4" line level output jack is the send to an external signal processor. It can also be used as a preamp output and it does not break the signal path between the power amp and preamp. The front panel volume and tone controls do affect the output of this jack. The output of the speaker is not emulated, so this is not a good choice as a substitute for mic-ing the amp.
5.) CD/Tape Input - this is a 3-conductor 1/4" line level input jack. The right and left channels are summed together on the ring and tip and sent to the preamps master mix section. The boost volume on the front panel is the only control that has any affect on this input. It acts as a master volume.
6.) Ext Tap FT Switch - this 2-conductor 1/4" switching jack replaces the Toggle Tap switch on the top panel. This is a nice feature to have, because it allows you to change the selected effect parameter in real time with your foot while playing. Using the jack disables the top panel switch. The jack accepts a non-LED single button momentary foot- switch. This foot-switch is not included with the amplifier. Kustom model KACFS-101M can be purchased separately. Most keyboard sustain pedals are this type and can also be used. NOTE: most single button foot switches used on analog instrument amplifiers are alternate contact (the "push on/push off" type). Using this type of switch will give unsatisfactory results but will not damage the amplifier.
7.) Main FT Switch - this 1/4" stereo jack connects a foot-switch to the amplifier. It uses a special circuit to decode the 3 switches through a simple stereo cable. The tip selects the rhythm or lead channel. The ring is multifunction for the overdrive on/off switch and the effects active/off switch. This foot-switch is not included with the amplifier. Kustom model KACFS-301 must be used to enjoy all the features. In an emergency, a mono single-conductor shielded instrument cable and single button foot-switch can be used to allow switching of the channels only. In this setup, the LEDs will not be visible, but at least the foot-switch will select Rhythm or Lead channels. The top panel overdrive on/off and effects active/off switches will still function.
