1. Bubuka jeung Leuwihview
The QSC RMX4050a Power Amplifier is engineered for mid-size to large audio systems, delivering robust performance even into 2-ohm loads. Its efficient three-tier, Class H design ensures clean audio output and optimized power consumption, operating effectively with a standard 15 amp nyolok.
Fitur konci:
- Professional quality performance, incorporating road-proven QSC designs.
- 4000 watt RMX 4050a operates on a standard 15 amp plug (120V).
- 1400W per channel at 4 ohms.
- Dual mono, high-current power supply for increased reliability and performance.
- Improved thermal performance yielding higher continuous power in 2 ohm stereo or 4 ohm bridged applications.

Gambar 1.1: Hareupeun view tina QSC RMX4050a Power Amplampu indikator, nu némbongkeun saklar daya, kontrol gain, jeung lampu indikator.

Gambar 1.2: Angled view tina QSC RMX4050a Power Amplifier, highlighting its rack-mountable design.
2. Setélan
RMX4050a amplifier is designed for rack-mount installation. Ensure adequate ventilation around the unit to prevent overheating.
2.1 Sambungan
Refer to the rear panel diagram (Figure 2.1) for all input, output, and power connections.
- Sambungan Input: Connect your audio source to the CH1 INPUT and CH2 INPUT using appropriate XLR or TRS (1/4") cables.
- Konéksi Kaluaran: Connect your speakers to the CH1 OUTPUT and CH2 OUTPUT using NL4 output connectors or binding post connectors. Ensure correct polarity and impedance matching for optimal performance and safety.
- Sambungan Daya: Connect the IEC power inlet to a standard 120V AC outlet using the provided power cord. The amplifier is designed to operate efficiently on a 15 amp sirkuit.

Figure 2.1: Rear panel connections of the QSC RMX4050a Power Amplifier. Labels indicate Barrier Strip, XLR, and TRS inputs, NL4 and Binding Post outputs, AC inlet, and circuit breakers.

Gambar 2.2: Tukangeun view tina QSC RMX4050a Power Amplifier, showing input and output terminals, cooling fan, and power inlet.
3. Parentah Operasi
The front panel of the RMX4050a provides essential controls and indicators for monitoring and adjusting ampkinerja lifier.
3.1 Kontrol Panel hareup jeung Indikator
Refer to the front panel diagram (Figure 3.1) for the location of controls and indicators.
- 1. Power On Indicator: Illuminates nalika amplifier dihurungkeun.
- 2. Pindah daya: Toggles ka amphurung sareng pareumna lampu hias.
- 3. Clip and Signal Indicators: The Signal indicator illuminates when an audio signal is present. The Clip indicator illuminates when the output signal is approaching clipping, indicating potential distortion. Reduce gain if the Clip indicator frequently lights up.
- 4. Gain Controls: Independent rotary controls for Channel 1 and Channel 2 to adjust the input sensitivity and overall output level.
- 5. Protect Mode Indicator: Nyalakeun upami amplifier enters protection mode due to conditions like overheating or short circuits.
- 6. Cooling Air Exhaust Vents: Ensure these vents are unobstructed for proper airflow.

Figure 3.1: Front panel controls and indicators of the QSC RMX4050a Power Amppangagung.
4. Pangropéa
Regular maintenance ensures the longevity and optimal performance of your QSC RMX4050a amppangagung.
- beberesih: Bersihkeun bagian luar sacara berkala amplifier with a soft, dry cloth. Avoid using liquid cleaners or solvents that could damage the finish or internal components.
- Ventilasi: Ensure that all cooling vents (front and rear) remain clear of dust and obstructions. Blocked vents can lead to overheating and reduced performance.
- Operasi Kipas: The internal cooling fan is crucial for maintaining optimal operating temperatures. While some fan noise is normal, especially under heavy load, ensure the fan is operating freely and not making unusual noises.
5. Cara ngungkulan
Bagian ieu nyayogikeun solusi pikeun masalah umum anu anjeun tiasa pendak sareng RMX4050a anjeun amppangagung.
5.1 Taya Daya
- Check the power cord connection at both the amplifier jeung stop kontak AC.
- Verify that the AC outlet is live by plugging in another device.
- Check the circuit breakers on the rear panel of the amplifier. Reset if tripped.
5.2 Taya Kaluaran Sora
- Pastikeun amplifier is powered on and the Power On indicator is lit.
- Verify that input sources are correctly connected and active.
- Pariksa sadaya sambungan spiker pikeun kabel sareng polaritasna anu leres.
- Adjust the Gain Controls on the front panel to an audible level.
- If the Protect Mode indicator is lit, refer to the amplifier's protection mechanisms (e.g., overheating, short circuit).
5.3 Sora menyimpang
- Reduce the input signal level from your source.
- Lower the Gain Controls on the amppangagung.
- If the Clip indicator is frequently lit, the amplifier is being overdriven. Reduce the input or gain.
- Ensure speakers are correctly matched to the ampsarat impedansi liifier.
5.4 Excessive Fan Noise
- Pastikeun amplifier's cooling vents are clear of obstructions.
- Under heavy load or in warm environments, increased fan speed and noise are normal for thermal management.
- If fan noise is unusually loud or persistent at low loads, contact QSC customer support.
6. Spésifikasi
| Spésifikasi | Nilai |
|---|---|
| merek | QSC |
| Nomer modél | RMX4050A |
| Jumlah Saluran | 2 |
| Output Power (per channel at 4 ohms) | 1400 Watt |
| Kaluaran Wattage | 750 Watts (general) |
| Voltage | 120 volt |
| Maksimum Suplai Voltage | 120 volt |
| Tipe Pamasangan | Rak-Gunung |
| Bahan | Metal, Circuit Board |
| Item Beurat | 78 pon |
| Ukuran produk (L x W x H) | 24 x 8 x 22 inci |
| GTIN | 00684284062864 |
| UPC | 684284062925, 684284062864 |
| Tanggal Kahiji Sadia | 11 Juli 2014 |
7. Garansi jeung Rojongan
For information regarding the product warranty, please refer to the documentation included with your purchase or visit the official QSC website. For technical assistance, troubleshooting beyond this manual, or service inquiries, please contact QSC customer support directly.
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