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An Introduction to RDL's Format-A System

RDL DB-TPA1A 3.5 W Audio Power Amplifier Format-A Receiver
  • RDL DB-TPA1A 3.5 W Audio Power Amplifier Format-A Receiver
  • RDL DB-TPA1A 3.5 W Audio Power Amplifier Format-A Receiver
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RDL DB-TPA1A 3.5 W Audio Power Amplifier Format-A Receiver

Manufacturer: Radio Design Labs

Item #: RDL-DB-TPA1A   •   MFG #: DB-TPA1A


List Price:$231.37
Our Price:$161.37

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More on the way, usually ships in 3-10 business days
This item is currently out of stock and will ship the minute we receive it – typically 3-10 business days. Need it sooner? Expedited delivery options may be available. Email [email protected] or call customer service at 800-522-2025 and we'll make it happen.

    California Residents:
    Cancer and Reproductive Harm -


    The RDL modules are two pair audio amplifier modules compatible with RDL Format A twisted pair products. Each -TPA1A receives stereo audio and 24 Vdc power through a rear-panel RJ45 jack. The left and right audio signals received on pairs B and C of the twisted pair cable are summed to mono and amplified. The amplified output level is set by an internal VCA which is controlled by a front-panel volume control. The VCA attenuator provides years of scratch-free gain adjustment.

    The -TPA1A circuits are all designed for low power consumption. Amplification is provided by a high-efficiency Class D power stage with audio filtering tailored for crisp, pleasant audio clarity. The high-efficiency Class D output stage produces negligible heat for all levels of expected voice or music modulation. When the user reduces the audio level to minimum, the class D output stage is switched off. This sleep mode remains active until the user turns up the output level.The output drives either a 4 Ohm or 8 Ohm speaker. The speaker cable connects to the module using a detachable terminal block.The front panel does not include any illuminated indicators, making the -TPA1A ideally suited to installation in dark rooms or areas. Installation is simple and quick, requiring only the connection of the speaker leads and the twisted pair RJ45.The -TPA1A may be fed and powered from any RDL Format-A sender, and is ideal in hospitality installations fed from a sender connected to a TV monitor (for example: FP-TPS4A Audio Sender from TV with fixed audio output level).Use the -TPA1A wherever a single speaker user-adjustable wall mounted amplifier is needed. Combine the amplifier with other RDL Format-A products for a cost-effective, high-performance audio system.

    • Features

      • 3.5 Watt RMS Audio Amplifier into 8 Ohms
      • 6.5 Watt RMS Audio Amplifier into 4 Ohms
      • Output Drives 4 or 8 Ohm Speaker
      • Setting Level to Minimum Activates Energy-Saving Sleep Mode
      • High-Efficiency Class D Operation
      • VCA Level Adjustment for Scratch-Free Long Life
      • Input and Power Connection on RJ45
      • Connects to Format-A Sender using Twisted-Pair Cable
      • Powered from RDL Twisted Pair Format-A Sender
      • Speaker Output Connection on Detachable Terminal Block
      • Ultra-Compact All Metal Construction
      • Thermal and Short-Circuit Protection
    • Specifications

      • Input: RDL Format-AInput Connector: RJ45
      • Gain Adjustment: Single turn audio taper, VCA attenuator
      • Frequency Response: 50 Hz to 20 kHz (± 1.5 dB)
      • THD+N: < 0.1% (@ 1 kHz, 1 W)
      • Noise: <-70 dB (below 1 W RMS)
      • CMRR: > 60 dB (50 Hz to 120 Hz)
      • Output Power: 3.5 W RMS (max., into 8 Ohms); 6.5 W RMS (max., into 4 Ohms)
      • Sleep ModePower Consumption: < 0.3 W
      • Sleep Mode Enable: Active at audio gain <-60 dB
      • Ambient Operating Environment: 0° C to 40°
      • Power Consumption: 45 mA (idle), 95 mA (1 W into 8 Ohms), 150 mA (1 W into 4 Ohms), 215 mA (3.5 W into 8 Ohms)
      • Dimensions: Height: 4.13 in. 10.49 cm; Width: 1.7 in. 4.32 cm; Depth: 2.15 in. 5.47 cm
      • Package Type: Cardboard Box
      • Package Dimensions: 3.625 x 4.625 x 2.125 in.
      • Shipping Weight: 0.395 lbs.
    • GTIN:


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