RDL D-TPA1A 3.5W Decora Audio Power Amplifier, Compatible with Guest Room Audio System

Radio Design Labs' D-TPA1A modules are two pair audio amplifier modules compatible with RDL Format A twisted pair products. Each D-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 D-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 D-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 D-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 D-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.

Radio Design Labs D-TPA1A 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

Radio Design Labs D-TPA1A Specifications:

• Input: RDL Format-A
• Input Connector: RJ45
• Gain Adjustment: Single turn audio taper, VC 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 WRMS (max., into 4 Ohms)
• Power Consumption: 45 mA (idle), 95 mA (1 W into 8Ohms), 150 mA (1 W into 4 Ohms), 215 mA (3.5 W into 8 Ohms)
• Sleep Mode Power Consumption: < 0.3 W
• Sleep Mode Enable: Active at audio gain < -60 dB
• Ambient Operating Environment:
  • Maximum: 0° C to 40° C
  • Recommended: 20° C
• Dimensions (HxWxD): 4.13" x 1.7" x 2.15" (10.49 x 4.32 x 5.47 cm)
• Package Type: Cardboard Box
• Package Dimensions: 3.625" x 4.625" x 2.125"
• Shipping Weight: 0.395 lbs.