Product Description
RDL D-TPA1A 3.5 Watt Audio Power Amplifier
Overview
The -TPA1A 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-A |
Input Connector | RJ-45 |
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 (maximum into 8 Ω); 6.5 W rms (maximum into 4 Ω) |
Power Consumption | 45 mA (idle), 95 mA (1 W into 8 Ω), 150 mA (1 W into 4 Ω), 215 mA (3.5 W into 8 Ω) |
Sleep | Power Consumption: < 0.3 W Enable: Active at audio gain <-60 dB |
Operating Environment | Maximum: 32 to 104°F (0 to 40°C) Recommended: 68°F (20°C) |
Dimensions | 4.1 x 1.7 x 2.1" (10.4 x 4.3 x 5.3 cm) |