electro-harmonix LPB-3 Nano Linear Power Booster Pedal Instruction Manual
- June 12, 2024
- electro-harmonix
Table of Contents
LPBS LINEAR
POWER BOOSTER
LPB-3 Nano Linear Power Booster Pedal
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. Additionally, 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
amplifier into saturated bliss, the LPB-3 has you covered.
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 amplifier 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.
POWER SUPPY REQUIREMENTS:
Voltage: 9VDC
Current: 120mA
Polarity: 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.
Controls and Connections
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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 fine-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. -
BOOST Knob Sets the output level of the LPB-3, basically working like a volume control.
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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.
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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 counterclockwise to cut MID EQ. Set MID LVL to its center position for a flat MID EQ response.
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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.
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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, affecting a narrow range of frequencies.
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TREBLE Knob Boosts or cuts frequencies above 3.2kHz. Turn the TREBLE knob clockwise from noon to boost the high end. Turn the knob counterclockwise to cut highs. Set TREBLE to its center position for a flat treble response.
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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 flat bass response.
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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. -
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.
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INPUT Jack Audio input jack. Input impedance 1MΩ; Max In: +20dBu
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OUTPUT Jack Audio output jack. Output impedance 660Ω; Max Out: +22dBu
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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 centernegative plug. Do not exceed 12VDC at the power jack.
The LPB-3 does not take batteries.
Notes and Specifications
- 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
WARRANTY INFORMATION
Please register online at www.ehx.com/product-
registration or complete and return
the enclosed warranty card within 10 days of purchase. Electro-Harmonix will
repair or replace, at its discretion, a product that fails to operate due to
defects in materials or workmanship for a period of one year from date of
purchase. This applies only to original purchasers who have bought their
product from an authorized Electro-Harmonix retailer. Repaired or replaced
units will then be warranted for the unexpired portion
of the original warranty term.
If you should need to return your unit for service within the warranty period,
please contact the appropriate office listed below. Customers outside the
regions listed below, please contact EHX Customer Service for information on
warranty repairs at
info@ehx.com or
+1-718-937-8300. USA and Canadian
customers: please obtain a Return Authorization Number (RA#) from EHX Customer
Service before returning your product. With your returned unit, include a
written description of the problem as well as your name, address, telephone
number, e-mail address, RA# and a copy of your receipt clearly showing the
purchase date.
United States & Canada
EHX Customer Service
Electro-Harmonix
co New Sensor Corp.
47-50 33rd Street
Long Island City, NY 11101
Tel: 718-937-8300
Email: info@ehx.com| UK
John Williams
Electro-Harmonix UK
13 Cwmdonkin Terrace
Swansea SA2 0RQ
United Kingdom
Tel: +44 179 247 3258
Email: ehxuk@ehx.com| Europe
Musik Elektronik
EHX Repair Center
Ötterichweg 7
D-90411 Nürnberg
Germany
Tel: +49 911 559152
Email: info@musikhof.de
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This warranty gives a purchaser specific legal rights. A purchaser may have
even greater rights depending upon the laws of the jurisdiction within which
the product was purchased.
COMPLIANCE
Note: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur
in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Modifications not expressly approved by the manufacturer could void the user’s
authority to oper-ate the equipment under FCC rules.
The CE logo indicates that this product has been tested and shown to conform
with all applicable European Conformity directives.
The WEEE or “trashcan” logo indicates that this product is made up of
electronic components that should not be trashed alongside household waste but
instead should be recycled by a proper electrical waste facility.
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