Introduction
The Sherwood RX-4105 is a 2-channel remote-controlled stereo receiver designed to provide integrated preamplification and amplification for various audio source components. It features advanced radio tuning capabilities and delivers 100 watts RMS per channel x 2, ensuring clear sound reproduction. This manual provides comprehensive instructions for setting up, operating, and maintaining your receiver.
What's in the Box
- Sherwood RX-4105 receiver
- Remote control
- AC power supply cord
- FM indoor antenna
- AM loop antenna set
- Owner's manual (this document)
Setup
Follow these steps to properly set up your Sherwood RX-4105 stereo receiver.
1. Placement
Place the receiver on a stable, flat surface with adequate ventilation. Ensure there is enough space around the unit for heat dissipation. Avoid placing it near heat sources or in direct sunlight.
2. Connecting Antennas
Connect the supplied FM indoor antenna to the FM 75Ω terminal and the AM loop antenna to the AM LOOP terminals on the rear panel. For optimal reception, extend the FM antenna fully and position the AM loop antenna away from the receiver.
3. Connecting Speakers
The RX-4105 supports two pairs of loudspeakers (A and B). Use 16-gauge or thicker speaker wire for best results. Connect the positive (+) terminal of the receiver to the positive (+) terminal of the speaker, and the negative (-) terminal of the receiver to the negative (-) terminal of the speaker. Ensure correct polarity for both channels.
- Speaker A: Connect your primary pair of speakers to the SPEAKER A terminals.
- Speaker B: Connect a secondary pair of speakers (e.g., for another room) to the SPEAKER B terminals.
- Bi-wiring: If your speakers support bi-wiring, you can use both A and B outputs for a single pair of speakers for more efficient amplification (e.g., A for woofers, B for tweeters). Ensure your speakers are compatible.
Speaker Impedance: A, B - 8Ω MIN / SPEAKERS; A+B - 16Ω MIN / SPEAKERS
4. Connecting Audio Components
Connect your audio source components to the corresponding RCA input jacks on the rear panel. The receiver provides inputs for CD, TAPE (In/Out), TV/AUX, and VCR (In/Out).
- CD: For CD players.
- TAPE (IN/OUT): For cassette decks or other recording devices.
- TV/AUX: For televisions or other auxiliary audio sources.
- VCR (IN/OUT): For VCRs or other video recording devices with audio output.
5. Power Connection
Once all audio and speaker connections are made, connect the AC power supply cord to the AC INPUT (120V~60Hz 2.5A) on the rear panel and then to a standard wall outlet.
Image Description: This image displays both the front and rear panels of the Sherwood RX-4105 Stereo Receiver. The top portion shows the front panel with controls for power, input selection (FM/AM, CD, TAPE, AUX, PHONO, TONE DIRECT), tuning/preset, memory, tone/balance, and a large volume knob. A digital display shows current settings like "FM 87.50". The bottom portion shows the rear panel, detailing connection ports. From left to right, it includes antenna terminals (AM LOOP, FM 75Ω), various RCA input/output jacks (CD, TV/AUX, TAPE IN/OUT, VCR IN/OUT), speaker terminals (A and B), and the AC power input. Safety warnings and product model information are also visible.
Operating Instructions
Power On/Off
Press the ON/STANDBY switch on the front panel to turn the receiver on or off. The STANDBY indicator will illuminate when the unit is in standby mode.
Input Selection
Press the desired input button (FM/AM, CD, TAPE, AUX, PHONO, TONE DIRECT) on the front panel to select your audio source.
Volume Control
Rotate the large VOLUME knob on the right side of the front panel to adjust the sound level. The digital display will show the current volume setting. The receiver includes a safety feature that may shut down the system if the volume is set too high or if the unit overheats, preventing damage.
Tone and Balance Controls
Use the TONE (Bass/Treble) and BALANCE controls to fine-tune the audio output to your preference. The TONE DIRECT button bypasses these controls for a pure audio signal.
Tuner Operation (FM/AM)
- Press FM/AM to select the desired band.
- Use the TUNING/PRESET buttons (up/down arrows) to manually tune to a station or cycle through preset stations.
- To store a station as a preset, tune to the station, then press MEMORY T/P MODE. Use the TUNING/PRESET arrows to select a preset number, and press MEMORY T/P MODE again to confirm. The receiver supports 30 station presets.
- The built-in AM/FM tuner features auto station setup for convenience.
Headphone Jack
Connect headphones to the PHONES jack on the front panel for private listening. When headphones are connected, speaker output will be muted.
Speaker Switching
Use the A SPEAKER B buttons on the front panel to switch between Speaker A, Speaker B, or both (A+B) outputs.
Maintenance
To ensure the longevity and optimal performance of your Sherwood RX-4105 receiver, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the receiver. Do not use liquid cleaners or aerosol sprays, as they may damage the finish or internal components.
- Ventilation: Ensure that the ventilation openings on the top and sides of the receiver are not blocked. Proper airflow is crucial to prevent overheating.
- Connections: Periodically check all cable connections to ensure they are secure and free from corrosion.
- Storage: If storing the receiver for an extended period, disconnect it from power and cover it to protect against dust.
Troubleshooting
If you experience issues with your receiver, consult the following table for common problems and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not securely connected; Power outlet not active. | Check power cord connection; Test outlet with another device. |
| No sound from speakers | Incorrect input selected; Speaker wires loose or incorrectly connected; Speaker A/B not selected; Volume too low. | Select correct input; Check all speaker wire connections and polarity; Ensure Speaker A or B (or A+B) is selected; Increase volume. |
| Poor radio reception | Antenna not connected or poorly positioned; Interference from other electronics. | Connect and adjust antenna position; Move receiver away from other electronic devices. |
| Remote control not working | Batteries are dead or inserted incorrectly; Obstruction between remote and receiver. | Replace batteries, check polarity; Remove any obstructions. |
| Receiver shuts down unexpectedly | Overheating due to poor ventilation; Speaker impedance too low; Volume too high. | Ensure proper ventilation; Check speaker impedance compatibility; Reduce volume. |
Specifications
| Model Number | RX-4105 |
| Output Power | 100 Watts RMS per channel x 2 |
| Channels | 2-Channel Stereo |
| Frequency Response | 20-20,000Hz |
| Distortion | Less than 0.08% |
| Tuner | AM/FM with 30 station presets |
| Speaker Outputs | A and B clip-type speaker outputs |
| Headphone Jack | 0.25-inch (6.35mm) |
| Dimensions (W x H x D) | 17-3/8 in x 5-7/16 in x 13 in (440mm x 138mm x 332mm) |
| Item Weight | 19.7 pounds |
Warranty and Support
Warranty Information
The Sherwood RX-4105 receiver typically comes with a two-year warranty. Please note that the warranty does not cover misuse of the product. For specific warranty terms and conditions, refer to the warranty card included with your purchase or contact Sherwood customer service.
Customer Support
For technical assistance, service, or further inquiries, please visit the official Sherwood website or contact their customer support line. Keep your purchase receipt and product serial number (located on the rear panel) handy when contacting support.
