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Summary of Contents for Legacy Powerbloc Series
- Page 1 Owners Manual For The Powerbloc Series Amplifier s...
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Page 2: Table Of Contents
Table of Contents Page Registration Owners Record Warranty Safety Care Setup Connections Powering Up Troubleshooting Technology An Engineer's Perspective 11-12 Designer Notes 13-14 15-16 Specifications... -
Page 3: Owners Record
Please Choose: Mono, 2 or 4 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. Share your Legacy speakers/electronics with the Legacy community. -
Page 4: Warranty
( 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. -
Page 5: Safety
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. -
Page 6: Care
Care 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. -
Page 7: Connections
Connections 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. - Page 8 C onnections Powerbloc4 To Posi tive Binding Post Speakers 1 , 2 , 3 , 4 Unbalanced or balanced Included IEC power connections from preamp or cable connection DAC with volume control To Negat ive Binding Post Speakers 1 , 2 , 3 , 4 Master Power Switch 12 V trigger connection...
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Page 9: Powering Up
Connections The Powerbloc Series of amplifiers uses a universal power supply. The include d IEC power cable or any other IEC standardized cable can be utilized. The 12 V trigger allows your Powerbloc to interface with the rest of your system. The trigger can receive signals from your receiver, preamplifier or other gear, to toggle the Powerbloc power off and on with the rest of your system. -
Page 10: Troubleshooting
Play CD or other source verifying input selector on preamp. No signal present Streaming is less reliable for this test. Internal fuse blown on channels' Contact Legacy Audio at 800-283-4644 No sound from one supply or two channels Internal fuse is degraded... -
Page 11: An Engineers Perspective
An Engineers Perspective : by Legacy Chief Bill Dudleston Regarding the Powerbloc2 and Powerbloc4 Amplifiers, are they identical in build, excepting the number of channels? Nearly. Both have dual 30 amp peak power supplies. However the Powerbloc4 shares a supply with two channels, whereas the Powerbloc2 dedicates a separate supply to each channel, thus providing greater output into impedances below 4 ohms. - Page 12 To the listener what ultimately matters is the sound. We found this amplifier can hold its own with the best amplifiers today. We install up to four of these units into the flagship DSP controlled Legacy V speaker system. That’s the strongest endorsement I can give it.
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Page 13: Designer Notes
Designer Notes The Powerbloc series amplifiers utilize three of the most important advances in modern amplifier design. Among the qualities of these technologies, feedback is delivered directly at the output of the amplifier to provide very low output impedance, resulting in a much higher damping factor for precise bass control superior to most Class AB designs. -
Page 14: Designer Notes
Designer Notes Power loss of the Powerbloc amplifier and power loss of a Class AB amplifier with highest theoretically possible efficiency Wasted Power Powerbloc Class AB... -
Page 15: Specifications
Specifications for Powerbloc2 Power Output: 325 watts per channel x 2 @ 8 ohms, 650 watts per channel 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<... -
Page 16: Specifications
Specifications for Powerbloc 4 Power Output: 325 watts per channel x 4 @ 8 ohms, 650 watts per channel x 4 @ 4 ohms Inputs: 4 balanced XLR, 4 unbalanced RCA Outputs: 4 pair gold plated safety approved five-way binding posts Damping factor: 1,000<... - Page 17 Legacy Audio Distributor in Low Voltage Directive 2006/95/EC your country. A listing of Legacy EMC Directive 2004/108/EC Audio Distributors can be found on the Legacy Audio website www.legacyaudio.com or by contacting Legacy Audio at: 3023 E.
- Page 18 Notes:...
- Page 19 ©201 7 Legacy Audio 3023 E Sangamon Ave. Springfield, IL 62702 Phone: 800-283-4644 Fax: 217-544-1483...
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