1. איבערview
The QSC RMX2450 Stereo Power Amplifier is designed to provide reliable and high-quality audio amplification for professional sound systems. This amplifier features a robust power supply with a high-current toroidal transformer and ample filter capacitance, ensuring consistent performance even with demanding 2-ohm speaker loads. It incorporates a full complementary output circuit with linear output devices for ultra-low distortion and a flat frequency response. The RMX2450 is equipped with professional features such as independent defeatable clip limiters, selectable low-frequency filters, and versatile input/output connectivity options including barrier strip, XLR, 1/4-inch balanced inputs, and Speakon and binding post outputs. Efficient cooling is maintained by low-noise variable speed fans with rear-to-front airflow.
2. זיכערקייַט אינפֿאָרמאַציע
Before operating the QSC RMX2450 amplifier, please read and understand all safety instructions. Retain this manual for future reference.
- ריזיקירן פון עלעקטריקאַל קלאַפּ: דו זאלסט נישט עפענען די amplifier chassis. Refer all servicing to qualified personnel.
- מאַכט מקור: Connect the unit only to a power supply of the type specified in this manual and on the unit.
- ווענטילאַטיאָן: Ensure proper ventilation. Do not block ventilation openings. Maintain adequate clearance around the ampליפיער פֿאַר לופטפֿלוס.
- נעץ: שטעלט נישט אויס דעם אַפּאַראַט צו רעגן אָדער פייכטקייט. שטעלט נישט קיין זאכן אָנגעפילט מיט פליסיקייטן אויף דעם אַפּאַראַט.
- גראָונדינג: Always connect the power cord to a mains socket outlet with a protective earthing connection.
- רייניקונג: Disconnect the power cord before cleaning. Use a dry cloth only.
3. סעטאַפּ
3.1. אַנפּאַקינג און דורכקוק
קערפאַלי אַראָפּנעמען די amplifier from its packaging. Inspect the unit for any signs of damage that may have occurred during transit. If damage is found, contact your dealer immediately.
3.2. Rack Mounting and Placement
The RMX2450 is designed for standard 19-inch equipment rack mounting. Secure the amplifier using all four mounting points to ensure stability. Ensure that the rack provides adequate ventilation, allowing for rear-to-front airflow. Avoid placing the amplifier near heat sources or in enclosed spaces without proper air circulation.
3.3. פראָנט פּאַנעל קאָנטראָלן און אינדיקאַטאָרן
This image displays the front panel of the QSC RMX2450 amplifier. Visible features include the main power switch, individual gain controls for Channel 1 and Channel 2, and LED indicators for signal presence and clipping.
- מאַכט סוויטש: טאַגאַלז די amplifier's main power on or off.
- Power LED: Illuminates green when the ampליפיער איז פּאַוערד אויף.
- געווינען קאָנטראָלס (קאַנאַל 1 און 2): Rotary controls to adjust the input sensitivity for each channel.
- Signal LEDs (Channel 1 & 2): Green LEDs indicate the presence of an audio signal.
- Clip LEDs (Channel 1 & 2): Red LEDs illuminate when the output signal is clipping, indicating potential distortion.
3.4. Rear Panel Connections and Switches
This image shows the rear panel of the QSC RMX2450 amplifier. It highlights the XLR and 1/4-inch input connectors, Speakon and binding post output connectors, a circuit breaker, and various mode switches for configuration, including clip limiting, low-frequency filters, and bridge mono operation.
- Input Connectors (Channel 1 & 2): Balanced XLR and 1/4-inch TRS connectors for audio input. Barrier strip inputs are also available.
- Output Connectors (Channel 1 & 2): Speakon and binding post connectors for connecting loudspeakers.
- מאָדע סוויטשיז: DIP switches for configuring various ampליפער פונקציעס:
- Clip Limiter: Engages or disengages the clip limiting function for each channel.
- Low-Frequency Filters: Selectable filters (e.g., 30 Hz, 50 Hz) to protect speakers and optimize low-end response.
- Stereo/Parallel/Bridge Mono: קאַנפיגיער די amplifier's operating mode.
- קרייַז צוימען: Provides overload protection for the ampליפער.
- AC Power Inlet: Standard IEC connector for the detachable power cord.
4. אָפּעראַציע
4.1. פּאַוערינג אויף און אויסגעלאשן
- Ensure all connections are secure and gain controls are set to minimum.
- Flip the front panel power switch to the 'ON' position. The Power LED will illuminate green.
- To power off, turn down all gain controls, then flip the power switch to 'OFF'.
4.2. אריינגאַנג און אַרויסגאַנג פֿאַרבינדונגען
פֿאַרבינדט אייער אַודיאָ מקור (מיקסער, פּרעamplifier) to the input connectors (XLR, 1/4-inch, or barrier strip) on the rear panel. Connect your loudspeakers to the output connectors (Speakon or binding posts). Ensure correct polarity for all connections.
4.3. Setting Gain Levels
With the audio source playing at a normal operating level, slowly increase the amplifier's gain controls until the desired volume is achieved. Monitor the Signal and Clip LEDs. The Signal LED should flicker with audio presence, and the Clip LED should only flash momentarily on signal peaks. If the Clip LED stays illuminated, reduce the gain to prevent distortion and potential speaker damage.
4.4. Using Clip Limiters
The RMX2450 features independent defeatable clip limiters. When engaged via the rear panel DIP switches, these limiters reduce peak distortion without sacrificing dynamic range. It is generally recommended to keep clip limiters engaged to protect speakers from excessive clipping.
4.5. Configuring Low-Frequency Filters
The rear panel DIP switches allow selection of low-frequency filters (e.g., 30 Hz, 50 Hz). These filters help protect speakers from damaging sub-sonic frequencies and improve low-end tightness. Select the appropriate filter setting based on your loudspeaker's frequency response capabilities.
4.6. Bridge Mono Mode
For maximum power output into a single load, the RMX2450 can operate in Bridge Mono mode. Refer to the rear panel diagram and DIP switch settings for proper configuration. In this mode, only Channel 1 input is used, and the output is taken from specific binding posts or Speakon pins as indicated on the amplifier. Ensure the connected speaker impedance is suitable for bridge mono operation (typically 8 ohms).
5. וישאַלט
5.1. רייניקונג
רייניקן פּעריִאָדיש די אויסערלעכע זייט פון די amplifier with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure ventilation grilles are free from dust and debris to maintain proper airflow.
5.2. ווענטילאַטיאָן
רעגולער קאָנטראָלירן צי די amplifier's ventilation openings are not obstructed. Proper airflow is crucial for preventing overheating and ensuring long-term reliability. If the amplifier is rack-mounted, ensure adequate space is provided around the unit.
6. טראָובלעשאָאָטינג
If you experience issues with your QSC RMX2450 ampלייפיער, באַראַטן זיך מיט דער פאלגנדער טאבעלע פֿאַר געוויינטלעכע פּראָבלעמען און לייזונגען.
| פּראָבלעם | מעגלעך סיבה | לייזונג |
|---|---|---|
| קיין מאַכט / מאַכט LED אויסגעלאָשן | Power cord disconnected, circuit breaker tripped, faulty power outlet. | Check power cord connection. Reset rear panel circuit breaker. Test power outlet with another device. |
| קיין געזונט רעזולטאַט | Input signal missing, gain controls at minimum, speaker cables disconnected, incorrect mode setting. | Verify input signal source. Increase gain controls. Check speaker cable connections. Ensure correct Stereo/Parallel/Bridge Mono mode. |
| Distorted sound / Clip LED constantly on | אינפוט סיגנאַל צו הויך, amplifier gain too high, speaker impedance too low. | Reduce input signal level from source. Decrease amplifier gain. Ensure speaker impedance matches ampליפערז ס קייפּאַבילאַטיז. |
| אָוווערכיטינג | Blocked ventilation, inadequate airflow. | Ensure all ventilation openings are clear. Provide adequate space around the ampליפיער פֿאַר לופטפֿלוס. |
If the problem persists after attempting these solutions, please contact QSC Customer Support.
7. ספּעסאַפאַקיישאַנז
The following are key technical specifications for the QSC RMX2450 Stereo Power Ampלייבער:
- רעזולטאַט מאַכט:
- 500 watts per channel @ 8 ohms (stereo)
- 750 watts per channel @ 4 ohms (stereo)
- 1200 watts per channel @ 2 ohms (stereo)
- 1500 watts @ 8 ohms (bridge mono)
- נומער פון טשאַנאַלז: 2
- Voltage: 120 וואלטס
- נומער וואָג: 44.5 פונט
- פּראָדוקט דימענשאַנז (L x W x H): 24 X 22 X 7 אינטשעס
- מאַונטינג טיפּ: Surface Mount (Rack Mountable)
- אַפּערייטינג טעמפּעראַטור: 50 Degrees Fahrenheit (recommended ambient)
- באַשרייַבונג מיט: פקק
- פאַבריקאַנט: QSC
- מאָדעל נומער: QSC RMX2450
- ASIN: B0002BSRM0
- UPC: 684284003720
8. וואָראַנטי & שטיצן
8.1. וואָראַנטי אינפֿאָרמאַציע
QSC products are designed and manufactured to the highest quality standards. This product is covered by a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official QSC webפּלאַץ.
8.2. קונה שטיצן
For technical assistance, service, or further information regarding your QSC RMX2450 Stereo Power Amplifier, please contact QSC Customer Support:
- Webפּלאַץ: www.qsc.com
- טעלעפֿאָן: Refer to the QSC webפּלאַץ פֿאַר רעגיאָנאַל קאָנטאַקט נומערן.
- בליצפּאָסט: Refer to the QSC webזייטל פֿאַר שטיצע אימעיל אַדרעסן.
