Electro Harmonix Black Finger Bruksanvisning
Electro Harmonix
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Black Finger
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BLACK FINGER
All-tube Optical Compressor
- OPERATING INSTUCTION - S
Congratulations on your purchase of the Black Finger! The Black Finger is a warm
sounding compressor pedal useful for both guitar and bass, as well as for home
recording. This pedal features an all-tube signal path using two premium 12AX7EH
vacuum tubes. Carefully reading these instructions will ensure that you will get the
most out of your Black Finger.
Included with the Black Finger is a unique 12VAC/1000mA adapter. Use only the
adapter supplied. Using any other adapter can cause harm to you, the Black Finger
and the adapter.
- THEORY OF OPERATION -
Optical compressors work by treating an incoming signal with an optically controlled
attenuator (a type of volume control) comprised of a fixed resistor and a shunt opto-
coupled photocell. Because this attenuator is “passive”—as opposed to the more
common “active” AGC (Automatic Gain Control) compressor circuits—it doesn’t add
an electronic signature to the signal, thus preserving the tone and character of the
original sound. Some gain is needed to adjust the output level so that it matches the
original level, and this is accomplished with an all-tube fixed gain pre-amp circuit. In
general, compressors are used to sustain melody lines, minimize changes in signal
level, or add a “forward” percussive effect to instruments or drums.
- CONTROLS -
COMPRESS Knob— Varies the amount of compression from minimum (counter-
clockwise) to maximum (clockwise).
WARNING: There are extremely high voltages in the Black Finger even when
it is unplugged DO NOT OPEN THE BLACK FINGER. –
Produktspecifikationer
| Varumärke: | Electro Harmonix |
| Kategori: | Inte kategoriserad |
| Modell: | Black Finger |
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