Electro Harmonix LPB-3 Bedienungsanleitung
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POWER SUPPY REQUIREMENTS:
Voltage: Current: Polarity: 9VDC 120mA Center-Negative
This device comes equipped with an Electro-Harmonix 9.6DC-200 power supply. Use of the wrong adapter
or a plug with the wrong polarity may damage the device and void the warranty. Do not exceed 12VDC on the
power plug. Power supplies rated for less than 150mA can cause the device to act unreliably.
Operating Instructions
Insert the output plug from the supplied 9VDC AC Adapter into the power jack
at the top of the LPB-3. Connect an instrument cable from your instrument to
the Input jack of the LPB-3. Connect an instrument cable between the Output
jack and a suitable amplier or mixer. Press the footswitch to engage the
LPB-3 and light the LED.
A good starting point is to set the knobs to their 12 o'clock positions and the
MAX and Q toggle switches to their lower positions. Increase the BOOST knob
for a noticeable increase in volume compared to bypass mode. Play some of
your favorite licks then further tweak the knobs and switches to dial in your
perfect setting.
Welcome to the Electro-Harmonix LPB-3, a compact booster pedal
capable of delivering up to 33dB of clean gain. Powerful Treble, Mid,
and Bass EQ controls allow for wide variation in tone shaping. Addition-
ally, the LPB-3 boasts extended +/-15V power rails and switchable
true or buffered bypass modes. Whether your sound needs just a little
nudge, a boost to line level for DAW recording, or to send your
amplier into saturated bliss, the LPB-3 has you covered.
- 2 -
Controls and Connections
1. PRE-GAIN Knob Adjusts clean input gain from 0dB (unity) to 20dB before
the signal hits the EQ circuitry. Use PRE-GAIN in conjunction with BOOST and
MAX to ne-tune the total output volume and gain through the LPB-3.
Pro Tip: If the EQ knobs are set in the boost half of their range, signal clipping
can be avoided by decreasing PRE-GAIN. If the EQ settings are set to cut, turn
up PRE-GAIN for more volume.
2. BOOST Knob Sets the output level of the LPB-3, basically working like a
volume control.
3. MAX Switch Boosts the gain at the output stage, and sets the maximum gain
of the LPB-3—from Input to Output—to either 33dB or 20dB. Set MAX to 20dB
for greater dynamics; set MAX to 33dB to drive the signal harder and poten-
tially send your amp into saturation.
- 3 -
4. MID LVL Knob Boosts or cuts the MID EQ. Turn the MID LVL knob clockwise
from its noon position to boost the MID EQ frequency. Turn MID LVL counter-
clockwise to cut MID EQ. Set MID LVL to its center position for a at MID EQ
response.
5. MID FREQ Knob Adjusts the MID EQ center frequency, which is boosted or cut
by the MID LVL knob. The frequency range of this knob is 240Hz to 3.3kHz.
Pro Tip: For a brighter sound, try cutting the low MIDs by setting MID FREQ to
10 o’clock and MID LVL to 11 o’clock.
6. Q Switch Sets the resonance or bandwidth of the MID EQ. Q set to LOW
mode yields an EQ that sounds broader or rounder and affects a larger
range of frequencies. In HIGH mode, the EQ sounds sharper or peakier, af-
fecting a narrow range of frequencies.
7. TREBLE Knob Boosts or cuts frequencies above 3.2kHz. Turn the TREBLE
knob clockwise from noon to boost the high end. Turn the knob counter-
clockwise to cut highs. Set TREBLE to its center position for a at treble
response.
8. BASS Knob Boosts or cuts frequencies below 240Hz. Turn BASS clockwise
from the noon position to boost the low end. Turn the knob counterclockwise
to cut. Leave BASS in its center position for a at bass response.
9. FOOTSWITCH and STATUS LED The footswitch engages or bypasses the effect.
The status LED lights when the effect is engaged and is off while in bypass.
10. BYPASS MODE SLIDE SWITCH Removing the bottom cover allows access
to the BYPASS Mode slide switch, located near the footswitch. The left position,
TRUE, sets the LPB-3 to True Bypass mode (factory default); the right position,
BUFFERED, sets the LPB-3 to Buffered Bypass mode. In True Bypass, the Input
jack is directly connected to the Output jack and is not connected to any
circuitry. In Buffered Bypass, the input signal goes through a high-quality
op-amp buffer, and then is connected to the Output jack.
11. INPUT Jack Audio input jack. Input impedance 1MΩ; Max In: +20dBu
12. OUTPUT Jack Audio output jack. Output impedance 660Ω; Max Out: +22dBu
13. 9VDC Power Jack Insert the output plug of the supplied AC Adapter
into the power jack. The LPB-3 requires 120mA at 9VDC on a center-
negative plug. Do not exceed 12VDC at the power jack. The LPB-3 does
not take batteries.
Notes and Specications
Audio input impedance at INPUT jack: 1MΩ
Audio output impedance at AMP jack: 660Ω
Current draw: 120mA at 9VDC
Power Supply: 9VDC, Center-negative polarity
Buffered or True bypass switching available
Produktspezifikationen
| Marke: | Electro Harmonix |
| Kategorie: | Nicht kategorisiert |
| Modell: | LPB-3 |
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