QSC RMX4050a 2000W Professional Low-Z Power Amplifier

QSC RMX4050a 2000W Professional Low-Z Power Amplifier

QSC RMX4050a 2000W Professional Low-Z Power Amplifier

B&H # QSRMX4050A MFR # RMX4050A
QSC RMX4050a 2000W Professional Low-Z Power Amplifier

Show MoreLess


Now Viewing:

Special Order
Expected availability: 3-7 business days

Product Highlights

  • 850W per Channel at 8Ω
  • 1400W per Channel at 4Ω
  • 2000W per Channel at 2Ω
  • Independent User-Defeatable Limiters
  • Selectable 30 and 50 Hz Low Pass Filters
  • Signal and Clip LED Indicators
  • 2800W Bridged at 8Ω
  • 3RU
  • Less than 16" Deep
Show moreShow less

This item is noncancelable and nonreturnable

Enter to win a $1000 B&H Gift Card!

Share a favorite product for chances to win one of four $1000 B&H Gift Cards! 1 new winner announced every Monday starting Nov 13th!
Limit 1 entry per day; Come back every day to increase your chance of winning!

Be sure to mention #BHWishList when you share!

Share on Twitter

First winner announced on Nov 13th

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B & H $1,000.00 Giveaway (the "Giveaway" or "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about November 6, 2017 until on or about December 4, 2017 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share any product found on the B&H website on Facebook or Twitter via the dedicated links therein (www.bhphoto.com) and mention #BHWishList; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment) (optional) to: B&H $1,000.00 Giveaway, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total four (4) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $1,000.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize at the email address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the email account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An email account holder shall mean the natural person assigned to such email account by the internet access or online service provider or other organization responsible for assigning email addresses for the domain associated with such email account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $1,000.00 Giveaway Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $1,000.00 Giveaway, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0.00 Tax Collected Outside NY and NJ

You Pay: $1,399.99

Add to Wish List Item in Wish List
  • 1Description

The QSC RMX4050a 2000W Professional Low-Z Power Amplifier is a 3RU unit designed for high power live sound reinforcement applications. The amplifier features both XLR and 1/4" balanced inputs as well as Speakon and touch-proof binding post output connectors. The integrated user-defeatable clip limiters and selectable low-frequency filters allow you to adjust the amplifier to your application.

The amplifier is rated at 850W per channel at 8Ω from 20 to 20,000 Hz, 1400W per channel at 4Ω from 20 to 20,000 Hz, 2000W per channel at 2Ω from 20 to 20,000 Hz, and 2800W in bridge mono mode at 8Ω from 20 to 20,000 Hz.

This unit is less than 16" deep and features a three-tier Class H output circuit design for efficient power management. As a result, less AC current is wasted and more available current is utilized for amplification.

2000W amplifier features a dual mono, high-current power supply for increased reliability and performance
Improved thermal performance yielding higher continuous power in 2Ω stereo or 4Ω bridged applications
Compact 3RU size
High-current toroidal transformers for increased 2Ω power and lower noise
Independent user-defeatable clip limiters reduce distortion
Selectable low-frequency filters (30 or 50 Hz) protect speakers and increase headroom
Balanced 1/4" (6.3mm) TRS, XLR, and barrier strip inputs
Touch-proof binding post and Neutrik Speakon outputs
Front mounted gain controls for easy access
Signal and Clip LED indicators for performance monitoring
Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
4000W amplifier operates on a standard 15A plug (120V)
UPC: 684284062864
In the Box
QSC RMX4050a 2000W Professional Low-Z Power Amplifier
  • Adhesive Rubber Feet (For Non-Rack Mount Applications)
  • Rear Rack Ear Mounting Kit
  • IEC-Type Detachable Power Cord
  • Limited 3-Year Warranty, Extendable to 6 Years With Registration
  • Table of Contents
    • 1Description
    Connectors Input (active balanced): 2 x 3-pin Euro-style detachable terminal block
    2 x 3-Pin XLR (pin 2+)

    Output: 2 x touch-proof binding posts
    2 x Neutrik Speakon connectors
    Stereo FTC Power 8Ω / FTC 20 to 20,000 Hz / 0.1% THD: 800 W (650 W @ 1 1.0 kHz sine wave, 1% THD, 1 channel driven)
    8Ω / EIA 1,000 Hz / 0.1% THD: 850 W
    4Ω / FTC 20 to 20,000 Hz / 0.1% THD: 1300 W
    4Ω / EIA 1,000 Hz / 0.1% THD: 1400 W
    2Ω / FTC 20 to 20,000 Hz / 1% THD: 1600 W
    2Ω / EIA 1,000 Hz / 1% THD: 2000 W
    Bridge 8Ω / FTC 20 to 20,000 Hz / 0.1% THD: 2600 W
    8Ω / EIA 1 kHz / 0.1% THD: 2800 W
    4Ω / EIA 1 kHz / 1% THD: 4000 W
    Signal to Noise Ratio > - 100 dB (20 to 20,000 Hz at 8 Ω)
    Distortion SMPTE-M: < 0.02%
    Typical: 20 Hz to 20 kHz 10 dB below rated power < 0.02% THD / 4 Ω and 8 Ω
    1.0 kHz and below full rated power 0.02% THD / 4 Ω and 8 Ω
    Input Sensitivity @ 8 ohms 1.42 V (5.3 dBu)
    Voltage Gain 64x (36 dB)
    Output Circuit 3-tier Class H
    Power Requirements Typical, 1/8 Power Pink Noise at 4Ω: 10.0 A
    Severe, 1/3 Power Pink Noise at 4Ω: 20.1 A
    Plug Type Supplied: NEMA 5-15 (100 / 120 V)
    CEE7/7 (230 V)
    Frequency Response 20 Hz to 20 kHz: 0/-1 dB
    -3 dB Points: 5 Hz and 50 kHz (LF filter bypassed / 8 Ω)
    Damping Factor > 250 at 8Ω (1,000 Hz and below)
    Input Impedance 10 kΩ unbalanced / 20 kΩ balanced
    Input Clipping Level 6.4 Vrms (+18 dBu)
    Cooling Continuously variable speed fan, back-to-front air flow
    Controls Front: AC switch / channel 1 & 2 gain knobs
    Rear: 10-position DIP switch
    Indicators Power-On: Green LED
    Signal: Yellow LED (1 per channel)
    Clip: Red LED (1 per channel)
    Protect: Red LED
    Protection Amplifier: Stable into reactive or mismatched loads
    Load: On/off muting, Triac crowbar on each channel
    Current Consumption @ 120 V

    Typical: 14.5 A, Full: 30.6 A, Maximum: 65.7 A

    Typical: 10.0 A, Full: 20.1 A, Maximum: 42.2 A

    Typical: 6.4 A, Full: 12.5 A, Maximum: 25.5 A
    Power Requirement 100, 120, 230 VAC, 50 to 60 Hz (factory configured)
    Dimensions (H x W x D) 5.2 x 19.0 x 15.9" (132.0 x 483.0 x 404.0 mm)
    Weight 68.0 lb (30.8 kg)
    Packaging Infozqddewecvrdyseuaazddaaawrdecbtzf
    Package Weight 79.8 lb
    Box Dimensions (LxWxH) 23.858 x 21.811 x 8.189"
    Be the first to review this item
    See any errors on this page? Let us know.