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user guide
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Summary of Contents for PMC twenty5 sub

  • Page 1 user guide Hand built by...
  • Page 3 IMPORTANT – Register your warranty Please take a few moments to register your warranty at www.pmc-speakers. com (click on ‘register a product’) or complete the warranty card at the back of this booklet. This records the purchase of your subwoofer and provides you, the customer an opportunity to make suggestions and provide feedback directly to PMC.
  • Page 4 Peter Thomas, Owner & Oliver Thomas, Head of Design At PMC, we believe that music is what really matters; it’s what moves us and gives us the passion for what we do. The company was founded because there wasn’t a loudspeaker that was transparent enough to convey all of music’s expressive power –...
  • Page 5 Congratulations – You have joined the elite Stevie Wonder )RURYHUWZHQW\ À Y H\ H DUV30&KDV UNIVERSAL MUSIC GROUP earned an unrivalled reputation for FUHDWLQJWKHZRUOG· V À Q HVWSURIHVVLRQDO ESPN Thomas Newman loudspeakers. Simply put, our speakers provide a reference for the world’s Afrojack KLJKHVWSURÀ...
  • Page 6: Table Of Contents

    Contents General usage guidelines Introduction Advanced Transmission Line (ATL ) Laminair System description Unpacking and care Installing the resonance absorbing plinth bars Connections Positioning and alignment Operational controls User EQ options Integration - Initial setup settings Running in 6SHFLÀ F DWLRQV Service The twenty5 series Our meticulous attention to detail...
  • Page 7: Tip Tip

    Servicing is required when the apparatus is damaged, exposed to moisture, or exhibits a distinct or sudden change of operation or audio performance. PMC has made efforts to provide accurate installation information and good quality À [ L QJV30&ZLOOQRWEHKHOGUHVSRQVLEOHRUOLDEOHIRULQMXULHVRUSURSHUW\ GDPDJHGLUHFW indirect or consequential - arising out of use or inability to use this product safely and properly.
  • Page 8: Introduction

    The electronics built into the subwoofer cabinet include an ultra-low distortion Class-D power DPSOLÀ H UZLWK' 6 3EDVHGJDLQÀ O WHULQJDQGEDVVPDQDJHPHQWIXQFWLRQVZKHQWKHVLJQDOLV routed via the twenty5 sub. Balanced stereo analogue and AES3 digital inputs are accepted to feed the subwoofer system, and these input signals are also passed through to the analogue and digital outputs for connection with other devices.
  • Page 9: Advanced Transmission Line (Atl )

    Advanced Transmission Line The source of PMC’s legendary natural and wholly realistic sound is the Advanced Transmission Line (ATL ) bass-loading technology. is an ingenious design which uses energy generated by the bass unit in a much more LQWHOOLJHQWDQGHIÀ F LHQWZD\ WKDQVSHDNHUGHVLJQV based on ported or sealed boxes.
  • Page 10 Laminair aerodynamic vent. The ATL design involves air moving under pressure at high speeds, and PMC’s Head of Design, Oliver Thomas was able to apply aerodynamic principles transferred from his previous industry, Formula 1 to the ATL concept.
  • Page 11: System Description

    System description The twenty5 active subwoofer has a powerful equalisation, and phase alignment for the ' 6 3HQJLQHRSHUDWLQJDWDÀ [ H GVDPSOHUDWH VXEZRRIHUDVZHOODVKLJKSDVVÀ O WHULQJEDVV of 96kHz. management options for the analogue and digital outputs. It also provides non-invasive The two balanced analogue inputs are excursion limiting to protect the drivers.
  • Page 12 • Please Note: This unit must be earthed Care and Service In normal usage PMC speakers should provide many years of trouble-free operation, but in the unlikely event that you suspect damage or failure has occurred do not attempt to repair the unit yourself.
  • Page 13: Tip Tip Tip Tip Tip Tip

    Resonance damping plinth bars and spikes enhance the performance and stability of the twenty5 sub. The bars attach to the base of each speaker using 4 x M8 countersunk bolts. The twenty5 series spikes can be used on VHQVLWLYHKDUGÁ...