Using The Microphone; Micro Edit - KETRON SD1 User Manual

Using the microphone

The SD1 can use two separate microphones, thanks to its separate inputs, of which one (input Mic 1) with professional pre-amplifier and balanced
XLR connection to minimise interference. Input Mic 1 is the only one that can exploit the built-in Vocalizer plus it is provided with a separate
audio output to be able to lead the voice and the signal processed to an external mixer. To use both microphones correctly you have to adjust
the input gain using the dedicated cursor on the rear panel to reach an ideal noise signal level. To check if this level is correct, simply sing or
speak into the microphone while adjusting the rear cursor and check the Overload LED on the ON LINE EFFECT push button. The ideal setting
is obtained when the LED lights up very rarely. Generally to reach this level easily, it is advisable to increase the input gain with the rear cur-
sor but with the volume of the keyboard set at zero (otherwise you could damage your hearing or the speakers and the amplifier!) until the LED
is lit steady, then reduce the gain until the LED lights up rarely and only for excessive noise levels. If the gain is too high, with the LED lit steady
the audio signal of the microphone would be unpleasantly distorted and vice versa if the gain is too low the signal will be disturbed in propor-
tion with the quality of the cable and the microphone. For this reason it is better to spend a little bit more for a good quality dynamic and stur-
dy microphone and strong connection cable.
Some other aspects must be remembered when using a microphone:
Always connect the microphone with the volume of the SD1 at zero, with the gain at zero and the amplifier turned off.
Keep the microphone away from the speakers as there could be Larsen effects, which could seriously damage your PA.
In small rooms it is preferable to use a microphone with hypercardoid diagram to avoid Larsen effects.
Keep the microphone on a very solid rod to avoid mechanical noises interfering with your voice.
Keep the microphone cable away from power supply cables and lines.
When you connect all your equipment remember that the speakers and the amplifier are always the last to be turned on and the first to be
turned off.

MICRO EDIT

The microphone parameters are stored in the F10 Micro Edit menu that is called up from the main page of the display using the dedicated func-
tion push button. The parameters relative to the microphone are correlated to the relative function push buttons.
F1 Level 1: This specifies the volume of the microphone on input Mic 1. Once the parameter has been selected using the function push
button the value is then varied using the VALUE +/- push buttons, which if pressed together at the same time reset the value.
F2 Level 2: This specifies the volume of the microphone on input Mic 2. Once the parameter has been selected using the function push
button the value is then varied using the VALUE +/- push buttons, which if pressed together at the same time reset the value.
F3 Pan 1: This selects the position on the stereo front of the microphone on input Mic 1. The signal of the microphone is set in the
middle when the parameter shows two dashes (—). The value is modified using the VALUE +/- push buttons which if pres-
sed together at the same time set the signal back in the middle.
F4 Pan 2: The same as F3 Pan 1 but for the microphone signal on input Mic 2.
F5 Music Vol: This balances the microphone signals with the timbre generator of the SD1. The value is modified using the VALUE +/-
push buttons which, if pressed together at the same time, set the value back at maximum. If the level of the two
microphones is not sufficient to stand out compared to the SD1, it is useful to remember to reduce this value.
F6 Echo 1-2: A delay can be set on the two microphone signals, the intensity of which is controlled by this value. To switch between
input Mic 1 and Mic 2 press the function push button F6 cyclically. The value is entered using the VALUE +/- push but-
tons which, if pressed together at the same time, reset the value.
F7 Reverb 1-2: The same as F6 Echo 1-2, but for the reverb for each input.
F8 Pitch Shift: This only affects the signal of the microphone on input Mic 1 and is used to transpose the notes sung in the microphone
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SD1 Owner's Manual