INDICATION: SIGNAL LED RESPONDING TO SIGNAL LEVEL If the yellow SIGNAL indicators are lighting normally, the fault is somewhere between the amp and the speaker. Check the speaker wiring for breaks. Try another speaker and cable.
INDICATION: DEL DE SIGNAL FONCTIONNENT NORMALEMENT Si les DEL SIGNAL fonctionnent normalement, le problme se situe entre la sortie de l'amplificateur et le haut-parleur. Vrifiez l'intgrit du cble de haut-parleur. Essayez un autre cble et un autre hautparleur.
ANZEICHEN: SIGNAL ANZEIGEN LEUCHTEN NORMAL Wenn die gelbe SIGNAL LEDs normal aufleuchten, liegt der Fehler an anderer Stelle zwischen Verstrker und Lautsprecher. berprfen Sie die Lautsprecherleitungen auf Unterbrechungen. Schlieen Sie einen anderen Lautsprecher mit anderen Kabeln an.
INDICACIN: EL INDICADOR LED DE "SIGNAL" SE ENCIENDAN AL DETECTAR EL NIVEL DE LA SEAL Si los indicadores LED amarillos de SIGNAL parpadean, la falla ocurre entre el amplificador y las bocinas. Revise los cables de las bocinas, e intente cambiarlas o cambiar los cables.

No sound (continued)

INDICATION: SIGNAL LED NOT LIT If the green POWER indicator LED is lit and the fan is running, yet the signal LEDs indicate no signal, check the input. Make sure the signal source is operating and try another input cable. Connect the source to another channel or amplifier to confirm its operation. Overheating will cause protective muting. The fan will be running at full speed and the chassis will be hot to the touch; sound should resume within a minute as the amplifier cools to a safe operating temperature. Check for proper ventilation. If the fan isn't running at all, the amplifier requires servicing.

Pas de son (suite)

INDICATION: DEL SIGNAL TEINTS CHECK Si la DEL POWER est allume et que le ventilateur fonctionne, mais que les DEL SIGNAL restent teintes, vrifiez la source de signal. Assurez vous que la source fonctionne normalement, puis essayez d'autres cbles de raccord. Brancher le signal de source un autre canal d'amplificateur pour confirmer la prsence de signal. La surchauffe entrane la mise en sourdine de l'amplificateur. Le ventilateur tournera alors pleine vitesse et le chssis sera chaud au contact; le son devrait revenir sitt l'amplificateur refroidi temprature normale d'utilisation. Assurez une ventilation suffisante. Si le ventilateur ne tournait pas, l'amplificateur serait dfectueux.

Kein Ton (Fortsetzung)

ANZEICHEN: SIGNAL ANZEIGEN LEUCHTEN NICHT Wenn die grne POWER LED leuchtet, der Lfter luft, die Signal LEDs aber kein Signal anzeigen, berprfen Sie den Eingang. Stellen Sie sicher, da die Quelle arbeitet und versuchen Sie es mit einem anderen Eingangskabel. Schlieen Sie die Quelle an einen anderen Verstrker an, um sicherzustellen, da sie arbeitet. berhitzung fhrt zu einer Abschaltung des Verstrkers. Der Lfter luft mit hchster Geschwindigkeit und das Chassis fhlt sich hei an. Der Ton sollte innerhalb einer Minute zurckkehren, sobald der Verstrker wieder eine normale Betriebstemperatur erreicht hat. berprfen Sie, ob eine einwandfreie Khlung mglich ist. Falls der Lfter nicht luft, mu der Verstrker zur Reparatur eingeschickt werden.

S P E C I F I C AT I O N S S P C I F I C AT I O N S TECHNISCHE DATEN ESPECIFICACIONES

RMX 850

OUTPUT POWER in watts FTC: 20 Hz20 kHz @ 0.1% THD, both channels driven 8 ohms per channel ohms per channel 280 EIA: 1 kHz @ 0.1% THD, both channels driven 8 ohms per channel ohms per channel kHz @ 1% THD, typical, both channels driven 2 ohms per channel 430 Bridge Mono: 8 ohms, 20 Hz20 kHz, 0.1% THD ohms, 1 kHz, 0.1% THD ohms, 1 kHz, 1% THD, typical 830 DYNAMIC HEADROOM DISTORTION SMPTE-IM FREQUENCY RESPONSE20 Hz20 kHz, +0/-1 dB (at 10 dB below rated output power) 2 dB @ 4 ohms

RMX 1450

RMX1850HD

RMX 2450

2 dB @ 4 ohms

< 0.01%

< 0.02%
-3 dB points: 5 Hz and 50 kHz
DAMPING FACTOR NOISE (unweighted 20 Hz to 20 kHz, below rated output) VOLTAGE GAIN INPUT SENSITIVITY, V RMS full rated power @ 8 ohms INPUT IMPEDANCE (all models)
> 300 @ 8 ohms 100 dB 31.6 (30 dB)
> 300 @ 8 ohms 100 dB 40 (32 dB)
> 300 @ 8 ohms 100 dB 46x (33 dB)
> 300 @ 8 ohms 100 dB 50 (34 dB)
1.15v (+3.4 dBu) 10K ohms unbalanced 20K ohms balanced Front: AC switch, Ch. 1 and Ch. 2 gain Rear: 10-position DIP switch POWER: Green LED

1.15v (+3.4 dBu)

1.16v (+3.5 dBu)

1.23v (+4.0 dBu)

CONTROLS (all models)

INDICATORS (all models)

Red LED, 1 per channel

SIGNAL:

Yellow LED, 1 per channel

CONNECTORS (all models)

Input: Output:
Active balanced; XLR and " (6.3 mm) TRS, tip and pin 2 positive, and barrier strip Touch-Proof binding posts and Neutrik Speakon
COOLING (all models) AMPLIFIER PROTECTION (all models)
Continuously variable speed fan, back-to-front air flow Full short circuit, open circuit, thermal, ultrasonic, and RF protection Stable into reactive or mismatched loads
LOAD PROTECTION Turn-on/turn-off muting AC Coupling AB
Turn-on/turn-off muting AC coupling AB
Turn-on/turn-off muting Triac crowbar (on each channel) H

OUTPUT CIRCUIT TYPE AB

AB: Class AB complementary linear output H: Class AB complementary linear output with Class H 2-step high efficiency circuit DIMENSIONS (all models) 19.0" (48.3 cm) wide, 3.5" (8.9 cm) tall (2 rack spaces) 15.9" (40 cm) deep (rack mounting to rear support ears) 41 lb. (18.6 kg) 35 lb. (15.9 kg) 46 lb. (20.9 kg) 40 lb. (18.2 kg) 50.5 lb. (23 kg) 44.5 lb. (20.2 kg) 50.5 lb. (23 kg) 44.5 lb. (20.2 kg)

WEIGHT

Shipping: Net:

POWER REQUIREMENTS

As printed on rear panel Serial Number label. Available for 100, 120 or 220240 VAC, 50/60 Hz
CURRENT CONSUMPTION @ 120 VAC (both channels driven)

Typical1 Full2

Idle 0.5 A
4.1 A 6.6 A 9.5 A* 7.4 A 11.5 A 17 A*

Idle 1.1 A

5.4 A 9.6 A 14.7 A* 10 A 16 A 25 A*

Idle 0.6 A

6.9 A 11.2 A 12.6 A 20.8 A
Multiply currents by 0.5 for 230V units

3A 4.5 A 6.5 A

3.7 A 6A 9.3 A

3.9 A 6.1 A 8.7 A

4A 6.3 A 9.2 A

9.7 A 15.6 A 23 A*

16.4 A 27 A 41 A*

16.6 A* 32.0 A*

POWER CONSUMPTION NOTES
1/8 power with pink noise represents typical program with occasional clipping. 1/3 power with pink noise represents severe program with heavy clipping. Continuous sine wave at 1% THD clipping.
* Thermal or overcurrent cutback limits duration.

US patents pending

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
W A R R A N T Y INFORMATIONS DE G A R A N T I E - INFORMACIN DE INFORMATION G A R A N T I E BEDINGUNGEN G A R A N T A
(USA only; see your dealer or distributor) (-U seulement; consultez votre marchand ou distributeur) (Nur USA; in anderen Lndern Ihren Fachhndler fragen.) (EE. UU. solamente; consulte su comerciante o su distribuidor)

Disclaimer

QSC Audio Products, Inc. is not liable for any damage to speakers, amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of the RMX amplifier.

Dcharge

QSC Audio products, Inc. ne peut tre tenu responsable de tout dommage des haut-parleurs, amplificateurs, ou tout autre quipement qui pourrait tre d de la ngligence ou mauvaise installation et/ou utilisation d'un amplificateur RMX.

Haftungserklrung

QSC Audio Products, Inc. haftet nicht fr Schden an Lautsprechern, Verstrkern, oder anderen Gerten, die durch Fahrlssigkeit im Betrieb oder durch nachlssige Installation verursacht wurden.

Atencin

QSC Audio Products, Inc., no es responsable por daos a las bocinas, amplificadores o cualquier otro equipo que sea causado por negligencia o mala instalacin o uso de los amplificadores RMX.

Product Warranty

QSC guarantees the RMX to be free from defective material and/or workmanship for a period of three years from the date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use provided the unit is returned to our factory via prepaid transportation with a copy of the proof of purchase, i.e., sales receipt. This warranty provides that examination of the returned product must indicate, in our judgment, a manufacturing defect. This warranty does not extend to any product which has been subjected to misuse, neglect, accident, improper installation, or where the date code has been removed or defaced.

(toll-free in U.S.A. only) (sans frais aux -U seulement) (zollfrei nur beim USA) (sin costo en EE. UU. solamente)
Customer Service / Service la clientle / Kundendienst / Servicio a la clientela
+(714) 957-7150 (800) 772-2834
Facsimile Numbers / Numros de tlcopieur / Telefaxnummern / Nmero de FAX: Sales & Marketing FAX / Tlcopie ventes & marketing / Telefax der Verkauf u. Marketing / FAX ventas y marketing +(714) 754-6174 Customer Service FAX / Tlcopie service la clientle / Kundendienst-Telefax / FAX servicio a la clientela +(714) 754-6173 World Wide Web: E-mail: www.qscaudio.com info@qscaudio.com tech_support@qscaudio.com
QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA
QSC and the QSC logo are registered with the U.S. Patent and Trademark Office. 1999, 2001 QSC Audio Products, Inc.
Important Safety Precautions & Explanation of Symbols

WARNING!

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in this manual. The lightning flashes printed next to the output terminals of the amplifier are intended to alert the user to the risk of hazardous energy. Output connectors that could pose a risk are marked with the lightning flash. Do not touch output terminals while amplifier power is on. Make all connections with amplifier turned off.
1- Read these instructions. 2- Keep these instructions. 3- Heed all warnings. 4- Follow all instructions. 5- WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture. Do not use this apparatus near water. 6- Clean only with a dry cloth. 7- Maximum operating ambient temperature is 50C (122F). 8- Never restrict airflow through the device fan or vents. Please insure that the air intake and exhaust vents are unobstructed. 9- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 10- Do not defeat the safety purpose of the grounding-type plug. The grounding plug has two blades and a grounding prong. The third prong is provided for your safety. If the provided plug does not fit your outlet, consult an electrician for the replacement of the obsolete outlet. Do not cut off the grounding prong or use an adapter that breaks the grounding circuit. This apparatus must be properly grounded for your safety. 11- Protect the power cord from being walked on or pinched, particularly plugs, convenience receptacles, and the point where they exit from the apparatus. 12- This product is not equipped with an all-pole mains switch. To fully disconnect from the AC mains, the AC plug must be removed from the AC outlet or the appliance coupler (IEC block) must be removed from the amplifier module. Ensure either the AC line cord plug or the appliance coupler are accessible in case of emergency disconnect requirement. 13- Connect the unit only to a properly rated supply circuit. 14- Reliable Earthing (Grounding) of rack-mounted equipment should be maintained. 15- Use only attachments/accessories specified by QSC Audio Products, Inc. 16- Unplug the apparatus during lightning storms or when unused for long periods of time. 17- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 18- The appliance shall not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on the apparatus. 19- When installing equipment into rack, distribute the units evenly. Otherwise, hazardous conditions could be created by an uneven weight distribution.

1- 2- 3- 4- 5 6- 7- 50C (122F) 8- 9- 10- 11- 12- IEC 13- 14- ( ) 15- QSC Audio Products 16- 17- 18- 19-
TD-000231-00 revA Rack Mounted Amplifer Safety Insert 2006 QSC Audio Products, Inc. QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA

RMX Series

Professional Power Amplifiers
RMX850 | RMX1450 | RMX1850HD | RMX2450 | RMX4050HD | RMX5050
The RMX Series amplifiers from QSC offer true professionalquality performance at an affordable price. Four 2-rackspace models range in power from 430 to 1200 watts per channel at 2 ohms. Two 3-rackspace models provide 2000 to RMX amplifiers 2500watts per channel at 2 ohms. All six models feature a compact chassis less than 16" deep. include a comprehensive set of features including XLR and 1/4" balanced inputs, Speakon and binding post outposts for convenient connectivity. User-defeatable clip limiters and selectable low frequency filters optimize sonic performance. RMX5050 QSCs RMX5050 power amplifier represents state-of-the-art in professional quality performance at an affordable price. Perfectly suited for a wide range of sound reinforcement applications including professional touring, performing musicians, and mobile entertainers, the RMX5050 is optimized to deliver high levels of sustained power, extraordinary audio performance and road-proven reliability. RMX4050HD Like its smaller sibling (the RMX1850HD), the RMX4050HD is one of two RMX heavy duty models designed to work as hard into 2 ohm loads as most competing amplifiers will at 4 ohms. Both the RMX5050 and RMX4050HD feature a three-tier, Class H design that is extremely efficient at real world power levels. Less AC current is wasted and more available current goes into producing useful audio power. 120 volt versions of the RMX4050HD accomplish all this with a standard 15 amp plug.

Features

rofessional quality performanceincorporates road-proven QSC designs P he 4000 watt RMX4050HD operates on a standard 15 amp plug (120V) T oth the RMX4050HD and RMX5050 feature a dual mono, high current B power supply for increased reliability and performance he RMX1850HD and RMX4050HD provide improved thermal performance T yielding higher continuous power in 2 ohm stereo or 4 ohm bridged applications (a RMX HD exclusive!) ompact sizeup to 2400 watts in 2 rack spaces or 5000 watts in C 3 rack spaces igh-current toroidal transformers for greater 2 ohm power and low noise H Independent user-defeatable clip limiters reduce distortion
RMX Power Amplifiers Model 8 RMX850 RMX1450 RMX1850HD RMX2450 RMX4050HD RMX5050 Watts per channel 4 2* Bridged 4* 4000 5000
electable low frequency filters (30 Hz or 50 Hz) protect speakers and S increase headroom Balanced 1/4" (6.3 mm) 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 to monitor performance ndependent DC and thermal overload protection on each channel I automatically protects amplifier and speakers year warranty plus optional 3 year extended service contract 3

1400 1800

1 kHz, 0.1% THD *1 kHz, 1% THD
Stereo Mode (both channels driven) 8 / FTC 20 Hz - 20 kHz / 0.1% THD 8 / EIA 1 kHz / 0.1% THD 4 / FTC 20 Hz - 20 kHz / 0.1% THD 4 / EIA 1 kHz / 0.1% THD 2 / FTC 20 Hz - 20 kHz / 1% THD 2 / EIA 1 kHz / 1% THD 8 / FTC 20 Hz - 20 kHz / 0.1% THD 8 / EIA 1 kHz / 0.1% THD 4 / EIA 1 kHz / 1% THD 185 W 200 W 280 W 300 W 430 W 530 W 600 W 830 W > -100 dB < 0.01% 1.15V (+3.4 dBu) 31.6x (30 dB) AB 4.5 A 6.6 A NEMA 5-15 CEE7/lbs (15.9 kg) 41 lbs (18.6 kg) 260 W 280 W 400 W 450 W 700 W 800 W 900 W 1400 W > -100 dB < 0.01% 1.15V (+3.4 dBu) 40x (32 dB) AB 6.0 A 9.6 A NEMA 5-15 CEE7/lbs (18.2 kg) 46 lbs (20.9 kg) RMX850 RMX1450 RMX1850HD 350 W 360 W 550 W 600 W 900 W 1100 W 1200 W 1800 W > -100 dB < 0.02% 1.16V (+3.5 dBu) 46x (33 dB) Class H, 2-tier 6.1 A 11.2 A NEMA 5-15 CEE7/7 44.5 lbs (20.2 kg) 50.5 lbs (23 kg) RMXW 500 W 650 W 750 W 1200 W 1300 W 1500 W 2400 W > -100 dB < 0.02% 1.23V (+4.0 dBu) 50x (34 dB) Class H, 2-tier 6.3 A 15.6 A NEMA 5-15 CEE7/7 44.5 lbs (20.2 kg) 50.5 lbs (23 kg) Continuous average output power per channel 850 W 1300 W 1400 W 1600 W 2000 W 2600 W 2800 W 4000 W > -100 dB < 0.02%

Specifications

RMX4050HD 800 (650**) W RMXW 1100 W 1600 W 1800 W 2000 W 2500 W 3200 W 3600 W 5000 W > -100 dB < 0.02% 1.42V (+5.3 dBu) 64x (36 dB) Class H, 3-tier 13.9 A 26.9 A NEMA 5-20 CEE7/lbs (33.1 kg) 87 lbs (37.2 kg)

Bridge Mono Mode

Continuous average output power
Signal to Noise (20 Hz - 20 kHz) 8 Distortion (SMPTE-IM) Input Sensitivity at 8 Voltage Gain Output Circuitry Power Requirements Typical, 1/8 power pink noise at 4* Severe, 1/3 power pink noise at 4*
1.25V (+4.1 dBu) 64x (36 dB) Class H, 3-tier 10.0 A 20.1 A NEMA 5-15 CEE7/lbs (30.8 kg) 77 lbs (34.9 kg)
Supplied Plug Type, 100/120V Supplied Plug Type, 230V Weight Net Shipping 20 Hz - 20 kHz: 10 dB below rated power 1.0 kHz and below: full rated power
Distortion (typical) < 0.03% THD / 4 and 8 < 0.03% THD / 4 and Hz - 20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bybassed / 8) > 250 at 8 6.4 Vrms (+18 dBu) > 300 at 8 10k ohms unbalanced / 20k ohms balanced 10 Vrms (+22 dBu) Continuously variable speed fan, back-to-front air flow Input: Active balanced / 3-pin Euro-style detachable terminal block and XLR (pin 2+) Output: Touch-proof binding posts / Neutrik Speakon Front: AC switch / Ch. 1 & 2 gain knobs Rear: 10-position DIP switch Power-on: Green LED / Signal: Yellow LED (1 per channel) / Clip: Red LED (1 per channel) Protect: Red LED Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads Turn-on/off muting / AC coupling (850, 1450) / Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel 3.5" (8.9 cm) tall / 2 rack spaces 100, 120, 230 VAC, 50 - 60 Hz (factory configured) 5.25" (13.3 cm) tall / 3 rack spaces < 0.02% THD / 4 and 8 < 0.02% THD / 4 and 8
Frequency Response Damping Factor (1 kHz and below) Input Impedance Input Clipping Cooling Connectors (each channel) Controls Indicators Amplifier Protection Load Protection Dimensions Power Requirements
* at 120VAC, both channels driven; multiply current by.5 for 230V units ** CE Rating
Specifications subject to change without notice.
QSC and the QSC logo are registered trademarks of QSC Audio Products LLC in the U.S. Patent and Trademark office and other countries. Speakon is a trademark of Neutrik. All other trademarks are the property of their respective owners. Patents may apply or be pending.