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User Manual for RDL 3.5W Audio Power and Headphone Amplifier Click to enlarge the picture
Contents of the user manual for the RDL 3.5W Audio Power and Headphone
- Product category: Wall Plates & Installation Boxes RDL
- Brand: RDL
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for RDL Wall Plates & Installation Boxes
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User manual for the RDL 3.5W Audio Power and Headphone contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any RDL product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official RDL user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a RDL product will considerably shorten its lifespan!
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Product description The black 3.5W Audio Power and Headphone Amplifier from RDL features one line input, an amplified output to drive a 4 or 8Ω speaker and a separate headphone amplifier. It features a balanced line level input that may be connected unbalanced. The gain range accommodates standard unbalanced levels as well as professional balanced levels. Its amplified output levels are controlled by a front-panel volume control. This amplifier features a mini-jack headphone output on the front panel. When a headset is plugged in, the power amplifier may be switched off. The two recessed slide switches located on the top of the rear enclosure are set prior to mounting the module. One switch is provided for setting the input sensitivity. The mute switch determines whether the power amplifier operates when headphones are plugged in. Amplification for the speaker output 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. Furthermore, the amplifier is designed to be mounted in a wall box. Its front panel does not include any illuminated indicators, making it suitable for installation in dark rooms or areas. The wiring is connected through a rear-panel detachable terminal block and module operation is from a 24 VDC ground-referenced power supply. - Wall-mounted amplifier with two outputs
- Balanced input on the rear panel
- Speaker output on the rear panel
- Mini-jack headphone output on the front panel
- Setting to turn off power amplifier upon headphone connection
- Mute amplifier using solid-state switching
- Single gain adjustment for the speaker and headphone amplifiers
- 3.5W RMS audio amplifier into 8Ω
- 6.5W RMS audio amplifier into 4Ω
- Output drives 4 or 8Ω speaker
- High-efficiency Class D operation
- Speaker output connection on detachable terminal block
- Ultra-compact all metal construction
- Thermal and short-circuit protection
UPC: 813721015907 In the Box RDL 3.5W Audio Power and Headphone Amplifier (Black) Limited 3-Year Warranty Table of Contents
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Technical parametersRDL DB-HPA3 Specs | Input | 20 kΩ balanced or unbalanced bridging | | Input Level | +4 dBu nominal (balanced, low input sensitivity)
-15 dBV nominal (unbalanced, high input sensitivity)
Minimum: -18 dBu (balanced, maximum gain)
Maximum: +22 dBu (low input sensitivity)
+4 dBu (high input sensitivity) | | Gain Adjustment | Single-turn audio taper (front-panel) | | Output Power | Headphones: 10 mW into 100Ω (normal)
30 mW into 100Ω (maximum)
Speaker: 3.5 W RMS (maximum, into 8Ω); 6.5 W RMS (maximum, into 4Ω) | | Frequency Response | Headphones: 20 Hz to 50 kHz (± 1 dB)
Speaker: 20 Hz to 20 kHz (± 1 dB) | | Noise | Headphones: < -85 dB (below 10 mW into 100Ω)
Speaker: < -80 dB (below 1 W into 8Ω) | | THD+N | Headphones: < 0.1% (20 Hz to 20 kHz, 10 mW into 100Ω)
Speaker: < 0.1% 1 kHz, 1 W | | CMRR | > 50 dB (50 Hz to 120 Hz) | | Power Requirement | 24 VDC at 30 mA (idle)
55 mA (1/8 power; normal voice or music)
225 mA (3.5 W into 8Ω) | | Ambient Operating Environment | Maximum: 32 to 104°F (0 to 40°C)
Recommended: 68°F (20°C) | | Dimensions (W x H x D) | 1.70 x 4.13 x 2.05" (4.32 x 10.49 x 5.21 cm) | | | | Box Dimensions (LxWxH) | 4.625 x 3.625 x 2.125" |
Rating70% users recommend this product to others. And what about you?
This product has already been rated by 21 owners. Add your rating and experience with the product.
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