HPA-4 - Receiver Nady Systems - Free user manual and instructions
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| Product Type | UHF Wireless Receiver |
| Brand | Nady Systems |
| Model | HPA-4 |
| Frequency Range | UHF 500-900 MHz (varies by region) |
| Number of Channels | 4 |
| Diversity Reception | True diversity with dual antennas |
| Audio Output | XLR balanced and 1/4" unbalanced |
| Antenna Type | Detachable BNC antennas |
| Power Supply | 12-18V DC, 500mA (external adapter included) |
| Dimensions | 19" rack mount, 1U height: 483 x 44 x 180 mm |
| Weight | 2.1 kg |
| Frequency Stability | ±0.005% quartz crystal controlled |
| Signal-to-Noise Ratio | >105 dB |
| Total Harmonic Distortion | <0.5% |
| Front Panel Indicators | Power, RF signal, audio level |
| Operating Temperature | 0°C to 50°C |
| Cleaning Instructions | Wipe with dry cloth, avoid liquids |
| Safety Certifications | CE, FCC |
| Warranty | 1 year limited |
| Included Accessories | Power adapter, antennas, rack ears |
Frequently Asked Questions - HPA-4 Nady Systems
How do I connect the HPA-4 receiver to a mixer?
Use the XLR balanced outputs to connect to your mixer's mic/line inputs. If using unbalanced, connect the 1/4" TS outputs. Ensure the receiver and mixer are powered off during connection.
What type of antennas does the HPA-4 use?
The HPA-4 uses detachable BNC antennas. For extended range, optional directional antennas can be used.
Can I use the HPA-4 with other Nady transmitter models?
Yes, the HPA-4 is compatible with Nady UHF transmitters that operate within the same frequency band. Ensure the transmitter and receiver are set to the same channel.
How do I change the frequency on the HPA-4?
The HPA-4 features front panel controls to select channels. Press the channel button and use the up/down arrows to change frequencies. Refer to the manual for specific steps.
Why is there no sound from the receiver?
Check that both the receiver and transmitter are powered on and set to the same channel. Verify the audio cables are connected properly. Ensure the transmitter is not muted.
How do I perform a frequency scan to avoid interference?
Press and hold the 'Scan' button for 3 seconds. The receiver will automatically scan for the cleanest frequency and set it. Repeat for each channel if needed.
What is the maximum range of the HPA-4?
Under ideal conditions, the HPA-4 can achieve up to 300 feet (91 meters) line-of-sight. Actual range may vary due to obstacles and RF interference.
Can I rack mount the HPA-4?
Yes, the HPA-4 is designed for 19" rack mounting and occupies 1U. Attach the included rack ears and secure with screws.
How do I clean the receiver?
Use a soft, dry cloth to wipe the exterior. Do not use liquids or abrasive cleaners. Keep the ventilation slots free of dust.
What power supply does the HPA-4 require?
The HPA-4 requires a 12-18V DC power supply with a minimum of 500mA. Use only the provided adapter to avoid damage.
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