Legacy Powerbloc2 User manual

Owners Manual For The
Powerbloc2
Amplifier
1

Table of Contents
Page
2
Registration
Owners Record 3
Warranty 4
Safety 5
Care 6
Setup
Connections 7-8
Powering Up 8
Technology
Designer Notes 9-10
Specifications 11

The serial number is located on the rear of the unit. Record this
number in the space provided below. Refer to this when calling your
dealer regarding this product.
Model: Powerbloc2
Serial No: _________________________
Date of purchase: ___________________
Thank you for listening with Legacy Audio. These hand-crafted
instruments will provide you with many years of listening en-
joyment.
Owners Record
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• The warranty applies to the original owner and is not transferable.
• The warranty applies to products purchased from an “Authorized Legacy Dealer”.
• The warranty on dealer stock will extend for a maximum of two years from invoice.
The warranty does not cover transportation costs of product to or from the customer, distributor or
dealer, or related shipping damage.
Exclusions from Warranty
The following situations or conditions are not covered by the Legacy Audio warranty:
• Accidental damage, electrical abuse or associated equipment failure.
• Use inconsistent with recommended operating instructions and specifications
• Damage caused by modification or unauthorized service
• Costs associated with the removal and reinstallation of defective products. Consequential damage to
other products.
• Normal wear such as fading of finishes due to sunlight.
Warranty
Legacy Audio supports its customers and products with pride. We cheerfully warrant our loud-
speaker products we manufacture from defects in materials and workmanship for a period of seven
(7) years. Electronic components such as amplifiers and digital processors are covered for three
(3)years. Please register your product with Legacy Audio. Should you require service Legacy will
require a proof of purchase in order to honor the warranty - so please keep your receipt.
• The warranty on active components such as digital processors or amplifiers is three (3) years
4

Do not block any ventilation openings.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
that produce heat.
The power cable should be unplugged from the outlet during severe electrical storms, or when
unused for a long period of time.
Grounding: Adequate precautions should be taken so that the grounding provisions built into an
electrical product are never defeated.
Safety
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT USE THE AMPLIFIER NEAR WATER OR IN WET LOCATIONS, DO NOT EXPOSE IT TO
RAIN OR MOISTURE, DO NOT EXPOSE IT TO DRIPPING OR SPLASHING FROM OTHER
SOURCES, AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS (SUCH AS VASES)
ARE PLACED ON IT. DOING SO MAY RESULT IN DAMAGE TO THE UNIT AND THE RISK
OF ELECTRIC SHOCK, WHICH MAY RESULT IN BODILY INJURY OR DEATH.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER.
NO USER-SERVICEABLE PARTS INSIDE.
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Care
6
If you wish to clean your amplifier, use a diluted ammonia based window cleaner. Do not use any
abrasive cleaners or chemical solvents. Take care not to damage the aluminum faceplate, since
aluminum is a medium hardness metal and can be scratched by the careless use of tools during
the installation. Save your box and packing material; they may be necessary for moving or
shipping the unit.

Connections
To Right Speaker To Left Speaker
12v trigger connection
Included IEC power
cable connection
Unbalanced or balanced
connections from preamp or
DAC with volume control
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Be certain all associated equipment is turned off before making any connections. Position your
amplifier as near the final location as possible while leaving sufficient access to its rear panel
connectors. To provide for adequate ventilation you should allow at least a couple of inches on
each side of the amplifier. Check that the amplifier is turned off. Insert the power cord into the AC
LINE INPUT on the back panel and then connect it to an appropriate power source.

The Powerbloc2 uses a universal power supply. The included IEC power cable or any other IEC standardized cable
can be utilized.
The 12v trigger allows your Powerbloc2 to interface with the rest of your system. The trigger can receive signals from
your receiver, preamplifier or other gear, to toggle the Powerbloc2 power off and on with the rest of your system.
Recommended power up sequence is source followed by preamp/processor, then your amplifier. Powering down
should be done in reverse order.
The power switch is on the front of the unit. Once the unit is powered up, the front LED will light up, indicating the
unit is ready for operation.
8
Powering Up
Connections

Designer Notes
The Powerbloc amplifiers provide very high voltage with massive current capability
(30 amps peak per supply). Damping factor is high, allowing the amplifier to handle
large amounts of back-EMF; as a result,the Powerbloc series will handily power
massive woofer motors.
The Powerbloc Amplifier series is a musical reference and studio workhorse. They
are audiophile grade amplifiers, designed and voiced for neutrality, that can
outperform many solid state amps at multiples of their price. Their efficiency also
provides better performance without wasting unnecessary power (see the graph on
the following page.)
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Distortion is also very low. Developing close loop architecture with the exceptional
power supply, results in a quick, quiet amplifier that boasts a damping factor
exceeding 500 below 1kHz. Bandwidth reaches out to 100kHz assuring airy treble.
Midrange is clear and present, while low frequencies are reproduced with speed
and authority. The Powerbloc series will handily drive a loudspeaker, including the
entire Legacy Audio speaker line, from top to bottom.

Designer Notes
10

S ecifications
Power per side: 325 watts per channel x2 @ 8 ohms, 650 watts per channe; x 2 @ 4 ohms
Inputs: 2 balanced XLR, 2 unbalanced RCA
Outputs: 2 pair gold plated safety approved five-way binding posts
Damping factor: 1,000< 1kHz
Voltage Gain: 27.4 dB
Dynamic Range: 117 dB
Peak Current: 30 amps/channel
THD: 0.005% at rated output
TIM: 0.0045% at rated output
Dimensions: 3" H x 17" W x 14" D
Unit Weight: 13 lbs
Shipping Dimensions: 7.5" H x 21.75" W x 16" D
Shipping Weight: 17 lbs
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Legacy Audio
3023 E. Sangamon Ave.
Springfield, IL 62702 USA
800-283-4644
States that this product is in conformity with the
with the essential requirements and other relevant
provisions of:
Low Voltage Directive 2006 95 EC
EMC Directive 2004 108 EC
CE Declaration of Conformity WEEE Com liance
Product Disposal—
Certain international, national
and or local laws and or
regulations may apply regarding
the disposal of this product. For
further detailed information,
please contact the retailer where
you purchased this product or
the Legacy Audio Distributor in
your country. A listing of Legacy
Audio Distributors can be found
on the Legacy Audio website
www.legacyaudio.com
or by contacting Legacy Audio
at: 3023 E. Sangamon Ave.,
Springfield, IL 62702,
USA—Phone: [phone].
All information contained in this manual is
accurate to the best of our knowledge at the time
of publication. In keeping with our policy of
ongoing product improvement, we reserve the
right to make changes to the design and features
of our products without prior notice.
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Notes:
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©2017 Legacy Audio
3023 E Sangamon Ave.
Springfield, IL 62702
Phone: [phone]
Fax: [phone]
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