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User Manual for RDL SF-PA50A 50W 70 100V Audio Amplifier Click to enlarge the picture
Contents of the user manual for the RDL SF-PA50A 50W 70 100V Audio
- Product category: 70-Volt Amplifiers 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 70-Volt Amplifiers
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User manual for the RDL SF-PA50A 50W 70 100V Audio 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 RDL SF-PA50A is a SysFlex series 50W 70/100V mono audio amplifier designed to convert one analog input to a constant voltage amplified output for A/V technicians, system installers, and audio engineers in office buildings, retail environments, and educational facilities. Its Class-D output stage delivers 50W of RMS power at 70 or 100V from a balanced or unbalanced analog input, which offers adjustable gain via a rear-panel, single-turn potentiometer.Connect a balanced analog source to the mono terminal block input, or utilize the unbalanced 3.5mm stereo mini jack to route signal from a mobile device. The terminal block output accommodates connection to 70 or 100V speakers, and a detachable terminal block is provided for hookup of remote control of the internal VCA. Thermal and short-circuit protection guard against electrical damage and unintended shutdown.The SF-PA50A supports powering via the included 24 VDC external power supply and North American power cord, or from proper wiring to the terminal block power input. Engineered and manufactured in the USA, it boasts a durable metal enclosure for reliable toughness. - Converts one analog audio input to a 70 or 100V constant voltage amplified output
- High-efficiency Class-D output stage produces minimal heat for all levels of expected voice or music modulation
- Balanced mono terminal block input
- Unbalanced 3.5mm stereo mini jack automatically sums the left and right channels to mono
- Input gain is set by the installer using a rear-panel, single-turn potentiometer with an associated dual-LED VU meter calibrated to 20 dB below maximum power output
- Supports powering via the included 24 VDC external power supply or 24V connection to the dedicated terminal block power input
- LED Mute indicator glows yellow when the output is muted
- Amplifier power is monitored and the current is limited to protect the power supply against shutting down, even during extreme feedback or square wave modulation conditions
- Red rear-panel LED flashes when the SF-PA50A reduces power consumption to prevent shutdown of the power supply
- Equipped with an internal VCA for setting the output level
- Detachable terminal block provides for the connection of an external 10-kOhm potentiometer or a 0 to 10 VDC control voltage
- Amplifier gain remains at maximum when the VCA input terminal is not connected
- RDL remote controls are available to provide single-turn, multi-turn (rotary encoder), or button (ramp or fixed-level selection) user level control
- Constructed in a durable all-metal enclosure suitable for free-standing, surface-mounted, or rack-mounted operation
- Engineered and manufactured in the USA for continuous duty in demanding installations
In the Box RDL SF-PA50A 50W 70/100V Audio Amplifier (North American Model) North American Power Cord 24 VDC Power Supply Limited 3-Year Warranty Table of Contents
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Technical parametersRDL SF-PA50A Specs | Inputs | 1 x 1/8" / 3.5 mm stereo mini jack (unbalanced)
1 x detachable terminal block (balanced) | | Outputs | 1 x terminal block for 70/100 V output | | Control | 1 x detachable terminal block for VCA control | | Amplifier | Class-D | | Amplifier Output | 50 W RMS (70 or 100 V) | | Maximum Input Level | Balanced: +25 dBu (before clipping)
Unbalanced: +10 dBV (before clipping) | | Nominal Input Level | Balanced: +4 dBu (adjustable)
Unbalanced: -10 dBV (adjustable) | | Minimum Input Level | Balanced: -10 dBu (for 20 dB below full output power)
Unbalanced: -25 dBV (for 20 dB below full output power) | | Gain Adjustment | Single-turn audio taper (with associated dual-LED VU meter calibrated to 20 dB below full output power) | | Input Impedance | Balanced: > 10 kOhms
Unbalanced: > 5 kOhms | | Common Mode Rejection | > 60 dB (50 to 120 Hz) | | Frequency Response | 50 Hz to 20 kHz (+0 / -3 dB) | | THD + N | < 1% (1 kHz) | | Noise | Below Maximum Power: < -90 dB
Below 1/8 Power: < -80 dB | | VCA | 0 to 10 VDC control via detachable terminal block (compatible with RDL VCA wall controls) | | Ambient Operating Environment | 32 to 104°F / 0 to 40°C (68°F / 20°C recommended) | | Indicators | Front-Panel: Power (blue), amplifier muted (yellow)
Rear-Panel: Overload protect (red), dual-LED VU meter (two) | | Plenum Number | UL 2043 | | Power Requirements | 24 VDC at 2700 mA via 100 to 240 VAC, 50-60 Hz, IEC C14 power supply or connection to terminal block power input | | Enclosure Material | Metal | | Dimensions (W x H x D) | 5.8 x 1.7 x 6.4" / 14.8 x 4.3 x 16.4 cm | | Weight | 5.9 lb / 2.7 kg | | Country of Manufacture | United States of America |
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