Pro AV Catalog
Radio Design Labs - HD-PA35
Request Quote
All Products

35watt Power Amplifier with Power Supply, Low Impedance Output 4 Ohm or 8 Ohm

Series:

Model: HD-PA35

  • One input with front-panel volume control
  • Bass and Treble tone controls
  • Designed as a single zone amplifier
  • Master volume VCA controlled with remote adjustment capability
  • Amplifier output on detachable terminal block
Compare
Project List
Product Info
Tech Specs
Related Products
Documents
Accessories
The HD-PA35 is a single input audio amplifier for systems demanding high energy efficiency. It may be used as a single zone amplifier fed from a variety of RDL or OEM mixers. It is ideal for providing one or more additional zones to a mix originating from another RDL HD series mixer amplifier. The 35 W power amplifier output is driven from a high-efficiency Class D amplifier stage. The amplifier output level may be VCA controlled using various optional RDL remote controls, or by industry standard 0 to 10 Vdc or 0 to 10 k? controls. The output drives 4 ? or 8 ? speakers. The output impedance is switch-selectable on the rear panel. The HD-PA35A has all the features of the HD-PA35 except its 35 W amplifier provides a constant voltage output (25 V, 70 V or 100 V) instead of a low impedance speaker output. The HD-PA35 is engineered and manufactured in the U.S.A. The HD-PA35 provides a front-panel control to set the input gain. An optional remote control connected to the rear-panel detachable terminal block provides for remote adjustment of the output level. The tone controls adjust the equalization at the amplifier output. The amplifier includes an analog compressor/limiter for audio fidelity noticeably superior to conventional class D amplifiers with digital limiting. Increasing the input gain can substantially increase the average output power beyond that of a standard 35 W amplifier. A red front-panel LED flashes when the compressor is preventing output clipping. Normal audio level signals remain unaffected by the compressor thereby preserving audio dynamics. The audio is compressed according to three dynamic time constants providing aural transparency while maintaining clean, unclipped amplified audio for input overloads of up to 20 dB. The HD-PA35, with compression, is capable of producing average audio output levels and clarity normally expected from amplifiers with a much higher output power rating. A blue POWER LED illuminates when the HD-PA35 is powered from its external 24 Vdc power supply (included). The power LED is dim when the mixer amplifier is in the standby mode, and is bright when the amplifiers are fully active. A front-panel pushbutton is provided to manually switch between standby and active modes. The power amplifiers are equipped with both thermal and output short-circuit protection. The high-efficiency Class D output stage produces minimal heat for all levels of expected voice or music modulation.
  • One input with front-panel volume control
  • Bass and Treble tone controls
  • Designed as a single zone amplifier
  • Master volume VCA controlled with remote adjustment capability
  • Amplifier output on detachable terminal block
  • Unbalanced summing inputs on RCA jacks
  • Includes power supply
  • High-efficiency Class D operation
 
Request Quote
 

Suggested Products

Douglas Fearing- Co-Founder / President

A graduate of DeVry Institute of Technology, Doug has been in the Technology industry since 1976 and actively oversees Fearing’s daily operations. Along with his wife, Lois, and three others, Doug started Fearing’s in a 600 square-foot facility in Portage, Wisconsin. In the 25 years since, the company has grown to over 30 employees with offices in Madison and Milwaukee, Wisconsin. Doug likes to say he’s a “TV Technician with a dream� going back to his history with the family’s original business-Fearing’s TV and Appliance.

Doug values time with family, watersports, hiking, snowshoeing and skiing. In addition to being a devoted member of his church, Doug serves as Board President for Kinship Mentoring of Columbia County, Board member of Schools for Haiti and Scripture Chair of the Gideons-Portage camp.

Lois Fearing- Co-Founder/Accounting, Human Resources

A graduate of MATC, Lois oversees Fearing’s daily book keeping along with various HR responsibilities.

Along with Doug, Lois is deeply connected to community outreach, serving as a Board member and Fundraising Committee Chairperson for Kinship Mentoring of Columbia County. She also serves on the Schools for Haiti Fundraising committee. In addition, Lois’ ongoing passion and commitment to provide care for the elderly comes from her 10-year history of working in a Reedsburg, Wisconsin Nursing home.

Lois enjoys singing, hiking, sunny days on the pontoon, and spending time with her 4 grandchildren.

Ehren Tresner-VP of Technology and Innovation

Ehren drives Fearing’s technology by continually seeking out trends to enhance capabilities while supporting Sales, Engineering and Installation teams. Throughout his years with Fearing’s, Ehren’s talent and vision have joined forces to create a wide variety of projects and strategic solutions that exceed expectation.

Ehren loves music, family time, movies, nature, sustainability efforts and electric vehicles.

Ben Voeck-Director of Commercial AV

With 10 years with Fearing’s and over twice that long in the industry, Ben continues to lead, coordinate, and develop the Commercial AV team.

By consistently delivering an outstanding experience and outcome, Ben contributes to the Fearing’s legacy of long-lasting partnerships that truly make a difference. Whatever the Commercial AV need may be, Ben and team deliver at the highest level.

Ben is an avid fisherman and photographer. He enjoys coaching his sons and other youth.

Chris Matson-Senior VP of Sales

Chris has been with Fearing’s for 20 years and in the industry for over 2 decades. As a Certified leader in Sales Acceleration and trained in EOS (Entrepreneurial Operating Systems), Chris successfully utilizes his skills to lead the Fearing’s Salesforce. Chris and team are motivated and driven to develop new client partnerships while continuing to reinforce loyal long-term relationships with ongoing Service excellence.

Married for 19 years with 3 children, Chris enjoys skiing, hiking, fishing, boating, hunting, camping and golf. He’s also been actively involved as a Youth Football and Softball coach for his family and others.