TX4n - Receiver YAMAHA - Free user manual and instructions
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| Product Type | Professional Power Amplifier / Receiver |
| Brand | Yamaha |
| Model | TX4n |
| Dimensions (H x W x D) | 3.5" x 19" x 16.5" (89 x 483 x 419 mm) |
| Weight | 31 lbs (14 kg) |
| Power Consumption | 1,200 W (full output) |
| Output Power (Stereo) | 2 x 900 W at 4 ohms |
| Frequency Response | 20 Hz - 20 kHz (±0.5 dB) |
| Input Sensitivity | 1.23 V (for rated output at 8 ohms) |
| Signal-to-Noise Ratio | > 105 dB (A-weighted) |
| Cooling System | Variable speed fan, front-to-back airflow |
| Protection Circuitry | Short circuit, DC offset, thermal, overload |
| Input Connectors | XLR and 1/4" TRS (balanced) per channel |
| Output Connectors | Speakon (2-channel) and binding posts |
| Gain Control | Front panel rotary attenuators per channel |
| LED Indicators | Power, Signal, Clip, Protect (per channel) |
| Rack Mountable | Yes, 2U rack height with included ears |
| Included Accessories | Power cord, rack mount brackets, user manual |
| Cleaning Instructions | Disconnect power; use dry cloth; avoid solvents |
| Safety Certifications | CE, UL, FCC Class B |
Frequently Asked Questions - TX4n YAMAHA
How do I connect the TX4n to my speakers?
Use Speakon connectors on the output panel. For each channel, connect the positive and negative terminals to the respective speaker terminals. Ensure the amplifier is off when making connections.
What is the correct input voltage for the TX4n?
The TX4n operates on 100-240 V AC, 50/60 Hz. Check the voltage selector on the rear panel and set it to match your local mains voltage before powering on.
How do I clean the TX4n?
Disconnect the power cord. Use a soft, dry cloth to wipe the exterior. Do not use any liquids or cleaning solvents, as they may damage the electronics.
What does the 'Protect' LED indicate?
The Protect LED illuminates when the amplifier detects a fault, such as a short circuit, DC offset, or overheating. The output is muted until the condition is resolved.
Can I bridge the TX4n for more power?
Yes, the TX4n can be configured in bridge mode by setting the rear panel mode switch to 'Bridged' and connecting the speaker to the bridged output (typically channel 1 positive and channel 2 negative). This provides up to 1800 W at 8 ohms.
What is the recommended impedance for speakers?
The TX4n is stable into 2 ohms per channel in stereo mode, and 4 ohms in bridged mode. For optimal performance, use speakers with a nominal impedance of 4 or 8 ohms.
How do I set the gain levels?
Start with the gain controls fully counterclockwise. With a signal present, gradually increase the gain until the desired output level is achieved, avoiding the Clip LED lighting up.
What should I do if the amplifier overheats?
Ensure the cooling fans are unobstructed and the amplifier has adequate ventilation. The thermal protection will engage if the temperature exceeds safe limits. Allow the unit to cool down before resuming operation.
Is the TX4n rack mountable?
Yes, the TX4n is designed for 19-inch rack mounting and occupies 2U of rack space. Use the included rack ears to secure it in the rack.
How do I troubleshoot no sound output?
Check that the power LED is on, the Protect LED is off, and the mode switch is set correctly (stereo/bridged). Verify input cables, signal source, and speaker connections. Test with a known good signal.
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