The Studiomaster QX Series Professional Amplifier is a class D power amplifier designed for stable and reliable performance in various environments. It offers high efficiency, energy saving, and a compact, lightweight design, making it suitable for touring applications.
Function Description:
The QX Series amplifiers are designed to amplify audio signals for professional sound systems. They feature multiple channels (2 or 4, depending on the model) with independent input and output controls. The amplifiers can operate in Stereo, Bridge, or Mono modes, providing flexibility for different speaker configurations. Input signals are typically balanced analog or AES3 digital, while output is via Speakon connectors. The front panel includes signal (SIG) and power (PWR) LEDs, volume knobs for each channel, and a power switch. The rear panel features input connectors (female and male XLR), power supply input, and gain switches to adjust the amplifier's sensitivity.
Important Technical Specifications:
The QX Series includes models such as QX2-3000, QX2-4000, QX2-6000, QX4-6000, and QX4-8000, offering a range of power outputs.
- Rated Output Power (THD+N=1%, 1kHz, continuous sine wave, all channel driving):
- QX2-6000: 2x3000W (8Ω/Stereo), 2x5100W (4Ω/Stereo), 2x7140W (2Ω/Stereo*), 1x6000W (16Ω/Bridge), 1x10200W (8Ω/Bridge), 1x14280W (4Ω/Bridge*)
- QX4-8000: 4x2000W (8Ω/Stereo), 4x3400W (4Ω/Stereo), 4x4760W (2Ω/Stereo*), 2x4000W (16Ω/Bridge), 2x6800W (8Ω/Bridge), 2x9520W (4Ω/Bridge*)
- QX4-6000: 4x1500W (8Ω/Stereo), 4x2550W (4Ω/Stereo), 4x3570W (2Ω/Stereo*), 2x3000W (16Ω/Bridge), 2x5100W (8Ω/Bridge), 2x7140W (4Ω/Bridge*)
- QX2-4000: 2x2000W (8Ω/Stereo), 2x3400W (4Ω/Stereo), 2x4760W (2Ω/Stereo*), 1x4000W (16Ω/Bridge), 1x6800W (8Ω/Bridge), 1x9520W (4Ω/Bridge*)
- QX2-3000: 2x1500W (8Ω/Stereo), 2x2550W (4Ω/Stereo), 2x3570W (2Ω/Stereo*), 1x3000W (16Ω/Bridge), 1x5100W (8Ω/Bridge), 1x7140W (4Ω/Bridge*)
- Output RMS voltage (THD+N=1%, 1kHz): 154.9V (QX2-6000), 126.5V (QX4-8000, QX2-4000), 109.5V (QX4-6000, QX2-3000)
- Slew rate (1kHz, low-pass filter bypassed): 50V/us
- Sensitivity (Rated Power, 1kHz): Selectable (41dB, 38dB, 35dB, 32dB)
- THD+N (10% Rated Power, typical): 0.01%
- IMD-SMPTE (10% Rated Power, typical): 0.01%
- DIM30 (10% Rated Power, typical): 0.01%
- Cross-talk (20Hz-1kHz, below Rated Power): ≥90dB
- Frequency response (10% Rated Power, 20Hz-20kHz, 8Ω): ±0.2dB
- Input impedance: 20kΩ (Balance), 10kΩ (Unbalance)
- Damp factor (8Ω, 20Hz-200Hz): ≥5000
- SNR (A weighted 20Hz-22kHz): ≥115dB (QX2-6000), ≥112dB (QX4-8000, QX2-4000), ≥110dB (QX4-6000, QX2-3000)
- Main power: 90~260VAC, 50~60Hz
- Protection: Under voltage, DC, Over temperature, Over load limiter, Short protection.
- Size (W×H×D): 483x44x465mm (QX2-6000, QX4-8000, QX4-6000), 483x44x370mm (QX2-4000, QX2-3000)
- Net weight: 12kg (QX2-6000, QX4-8000, QX4-6000), 9kg (QX2-4000, QX2-3000)
Usage Features:
- Wide Range Power Supply: Operates on 90~260VAC / 50~60HZ, making it suitable for global use.
- Temperature Control Fan: Ensures quiet operation and efficient cooling.
- Modular Design: Facilitates convenient maintenance.
- Input/Output Connections: Supports balanced analog and AES3 digital inputs. Speakon connectors are used for speaker outputs, with 1+ and 2+ connected together, and 1- and 2- connected together to enhance current capacity.
- Operating Modes: Configurable for Stereo, Bridge, or Mono modes via switches on the back panel.
- Gain and Sensitivity: Adjustable sensitivity (29dB, 32dB, 35dB, 38dB, 41dB) to match various third-party devices.
- Clipping Limiter: Features a CLIP Switch to turn the clipping limiter ON or OFF, preventing signal distortion and speaker damage.
- Protection Features: Includes under voltage, DC, over temperature, over load limiter, and short protection to ensure equipment longevity and safe operation.
- Cooling System: Cold air is drawn through the front panel and heat is expelled from the rear. The amplifier automatically reduces output voltage or shunts down if the temperature exceeds safe limits (85-90 degrees Celsius).
- Energy Efficiency: High efficiency class D power amplifier and switching power supply technology result in over 80% energy efficiency in routine use and over 90% in laboratory settings. Active power factor correction minimizes interference to the power grid.
Maintenance Features:
- Dust Cleaning: After prolonged use, if cooling efficiency decreases, the dust net cover can be removed for cleaning.
- Professional Repair: Internal circuits are complex and should only be maintained by trained professional technicians.
- Warranty: The product comes with a three (3) year warranty from the purchase date, covering failures not caused by improper use, accidents, or unauthorized modifications.
- Packaging for Repair: When sending the equipment for repair, it is recommended to use the original packaging materials to ensure adequate protection. The "Maintenance Information Card" should be filled out and sent along with the equipment. Accessories like power cords and manuals should not be sent with the unit for repair.
- Out-of-Warranty Service: For repairs outside the warranty, a detection fee will be charged, and the maintenance cost will be communicated to the customer for approval before proceeding with repairs. The company reserves the right to dispose of equipment not reclaimed within 30 days.
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