RMX 1450 - Amplificateur de puissance QSC AUDIO - Free user manual and instructions

USER MANUAL RMX 1450 QSC AUDIO

Rev. D RMX 850 RMX 1450 RMX 1850HD RMX 2450

RMX" Series Amplifiers

Explanation of graphical symbols

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 products enclosure that may be of sufficient magnitude to constitute à risk of electric shock to humans.

The exclamation point within an equilateral triangle is intended to alert the users to the presence of important operating and maintenance (servicing] instructions in the literature accompanying the product.

Explication des symboles graphiques

PRECAUCION RIESGO DE DESCARGA ELÉCTRICA. NO LO ABRA.

CAUTION: To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts side. Refer servicing to quali- fied service personnel.

WARNING: To preventfire or elec- tric shock, do not expose this equipment to rain or moisture.

ATTENTION: Pour éviter les risques de choc électrique, ne pas enlever le couvercle. Cet appareil ne comporte aucune pièce pouvant être réparée par l'utilisateur. Confier l'entretien àuntechnicien qualifié.

SPÉCIFICATIONS TECHNISCHE DATEN ESPECIFICACIONES WARRANTY INFORMATION INFORMATIONS DE GARANTIE GARANTIE-BEDINGUNGEN INFORMACIÔN DE GARANTIA ADDRESS & TELEPHONE INFORMATION .. ADRESSE POSTALE ET NUMÉROS ADRESSE UND TELEFONNUMMERN DIRECCION Y TELÉFONO

© Copyright 1999, 2001 QSC Audio Products, Inc.

OSC® is a registered trademark of QSC Audio Products, Inc. “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office.

All other trademarks are the property of their respective owners.

H ke, D. THD RMX 850 200 W 300 W 430 W RMX 1450 280 W 450 W 700 W RMX 1850HD 360 W 600 W 900 W RMX 2450 500 W 750 W 1200 W The RMX Series Amplifiers. These rugged fan-cooled, 2-channel, 2-RU amps provide high-value performance and power in a strong, compact chassis. The series comprises four models: the

RMX 850, RMX 1450, RMX 1850HD, and RMX 2450.

The HD designation on the RMX 180HD designates this model as “heawy duty”. The RMX 1850HD is superior to all other RMX models for driving 2 ohm loads for extended periods. The RMX 1850HD is perfectly suited for subwoofertype applications.

+ Independent, user-defeatable clip limiters

Fully selectable low-frequency fitering choice of 30 or 50 Hz roll-off

Stereo (dual-channel), parallel input, or bridged mono operating modes

Balanced inputs—XLR, 44" 16.3 mm) TRS, and barrier strip

Binding post and Neutrik SpeakonMM outputs

Front panel LED indicators for signal and clip

Amplificateurs de la séi RMX. Ces amplificateurs 2 canaux robustes, refraidis par ventilateur, ocupent deux espaces normalisés, procurent puissance et performance dans un châssis solide et compact. La série se compose de quatre modèles; le RMX 850, le RMX 1450, et le RMX 2450.

Gain control (Channel 1}

Gain control (Channel 2)

CLIP and SIGNAL indicator LEDs, both channels

Commande marche/arrêt

Commande de gain (Canal 1}

Commande de gain (Canal 2}

DELS CLIP (écrêtage] et SIGNAL {tous les deux canaux}

2. XLR inputs, Channels 1 and 2

Configuration switch

4. Configuration switch chart

TRS inputs, Channels 1 and 2

6. Speakon output, Channel 1 plus Channel 2

Speakon output, Channel 2

8. Binding post outputs, Channels 1and2

IEC connector for AC power cable

OFF Læ] ON FEATURES & SETUP Clip limiter

WHATITIS When the audio signal drives the amp's output circuit beyond its power capability it clips, flattening the peaks of the waveform, The clip limiter detects this and reduces the gain to minimize the amount of overdrive. To préserve as much of the program dynamics as possible, limiting reduces the average

program level until peaks barely clip

Each channel has its own clip limiter, and you can switch it on or off independentiy, as shown at left.

WHEN TO USE IT (OR NOT) When driving full-range speakers clip limiting reduces high frequency distortion caused by bass overloads I also protects higher frequency drivers from excess overdrive and

harsh clipping harmonics.

When driing subwoofers, some users let the amplifier clip without limiting because it gives extra “punch” to Kick drums and similar sounds.

CAUTION:In bi-amp systems,

excessive limiting will affect the frequency balance.

CARACTÉRISTIQUES ET LEUR UTILISATION Limiteur d'écrêtement

20H30 40 5060 40100 20) 30040050 TK FEATURES & SETUP Input filter

WHATITIS The low-frequency (LFI filter rolls off signals below either 30 Hz or 50 Hz. This improves bass performance by limiting sub-audio cone motion, making more power available for the

speakers’ rated frequency range

The filter settings for each channel are controlled indhidually through the DIP. switch settings shown. When the filter is tumed off, a 5 He rolloff protects against DC or deep sub-audio inputs.

WHEN TO USE IT (OR NOT)

As a rule, your speakers will sound better with proper filtering. Unless you already have filtering in à preceding device, match the setting to the low frequency rating of your speakers. Vented (bass reflex, ported, etc.) speakers are especially sensitive to cone over-excursion at

frequencies below their rated limit.

The 50 He filter works well with most compact full-range speakers, and has à slight boost at 100 Hz for greater fullness. The 30 Hz filter is intended for subwroofers and large full-range cabinets. The "off" position should be used only for applications such as studio playback monitoring, where you need to know if there are unwanted sub-audio

signals present in your mix

CARACTÉRISTIQUES ET LEUR UTILISATION Filtres d'entrée

Patching the input signal to additional amps

PRRANANNAS FEATURES & SETUP Parallel input mode

WHATITIS The "Parallel Input” switches let you operate the amplifier in parallel mode, delivering the same signal to both channels without using à Y-cable. Each channel drives its own speaker load, with independent gain, fitering, and clip limiting,

Set switch positions 4 and 5 "OI" to couple the inputs together. Turn the switches off for stereo, bi-amping, or other 2-channel modes.

With the inputs in parallel, you can use the other set of input connectors to carry the signal to other amps This is often called a "daisy-chain."

WHEN TO USE IT Parallel the inputs when driving two speakers with one input signal {parallel mode) while keeping separate control of both channels” gain, fitering, and limiting. Use them in bridged mono mode to patch the signal to additional amplifiers through the extra input jacks. See page 12 for an explanation of amp operating modes.

NOTE: I you're using a balanced signal, use only balanced patch cables; even one unbalanced cable will unbalance the entire signal chain, possibly causing hum.

NOTE: Turn off the “Parallel

Inputs" switches when feeding the amp two separate signals.

CARACTÉRISTIQUES ET LEUR UTILISATION Mode entrées parallèles

WHATITIS Bridged mono mode combines the power of both amp channels into one speaker, resulting in twice the voltage swing, four times the peak power, and approximately three times the sustained power of a single channel. This mode uses Channel 1's input, gain control, input filter, and clip limiter; Channel 2's should not

WHEN TO USE IT (OR NOT)

Use bridged mono to deliver the power of both channels to a single 8- or 4-ohm load. Set switch positions 6 and 7 to "BRIDGE MONO ON." Use Channel 1's inputs, and connect the speaker as shown.

BRIDGED-MONO PRECAUTIONS:

This mode puts a high demand on the amplifier and speaker, Excessive clipping may cause protective muting or speaker damage. Be sure the speaker has a sufficient power rating.

Output voltages greater than 100 volts rms are available between the bridged terminals of the RMX 2450. CLASS 3 wiring methods (NEC 1999), as specified in accordance with national and local codes, must be used to connect the speaker.

CARACTÉRISTIQUES ET LEUR UTILISATION Mode ponté mono

Can be used as “daisy-chain” output

FEATURES & SETUP What are the differences among Stereo, Parallel Input, and Bridge Mono modes?

STEREO MODE This is the “normal” way of using the amplifier, in which each channel is fully independent. Separate signals connect at the inputs, the gain knobs control their respective channels, and separate speakers connect to each output.

Examples: + Tivo-channel (stereo) playback

+ To independent mono signals, such as main and monitor mixes.

+ Bi-amped operation, with the low frequencies in Channel 1 and the highs in Channel 2

PARALLEL INPUT MODE This mode is just like Stereo mode, except that the inputs for Channel 1 and Channel 2 are internally connected together. À signal into any input jack wi therefore drive both channels directly. Each channels gain control still functions as usual, and each channel feeds its own speaker load

You can patch the input signal on to additional amplifiers by using any of the remaining input jacks.

+ One mono signal driving both channels, with independent gain control for each speaker system

Bridge mono with parallel switches engaged

Can be used as “daisy-chain output Le

FEATURES & SETUP BRIDGE MONO MODE This mode combines the full power capabilities of both channels into à single speaker system. The amplifier intemally re-configures so that both channels operate as à unit. This delivers double the output voltage, resulting in four times the peak power and three times the sustained power into a single 8- or 4-ohm speaker load. The Bridge Mono mode section on page 11 describes: the special speaker connection used

+ Driving à single 8-ohm speaker with the combined 4-ohm power of both channels

+ Driving à single 4-ohm speaker with the combined 2-ohm power of both channels

+ Bridge Mono mode makes it possible to drive thousands of watts into à single speaker. AC current consumption will usually be higher. Avoid excessive signal level, and make sure the wiring and speaker can handle the power.

I the load is 4 ohms or less and prolonged overloads oceur, the amplifier will probably mute for several seconds during peak, and the circuit breaker may trip.

+ Do not use 2-ohm loads.

SEE THE ADDITIONAL BRIDGE MONO MODE WARNINGS ON PAGE 11.

INSTALLATION Rack mounting of the amplifier is optional.

Use four screws and washers when mounting the amplifier to the front rack rails.

Support the amp at the rear also, especially in mobile and touring use: rear rack mounting ear kits are available from QSC' technical services department or by special order from your dealer or distibutor.

INSTALLATION Le montage de l'amplificateur dans un coffret est facultatif.

n0 balanceado Jumper pin 1 to 3

TRS unbalanced + TRS asymétrique + unsymetrische Stereoklinke + TRS no

XLR input pinout lunbalanced)

Each channel has active balanced XLR and Y-inch (6.3 mm) inputs wired in parallel. The input impedance is

20 KQ balanced, 10 KQ unbalanced

Balanced signals are less prone to AC hum, but unbalanced signals can be suitable for short cable runs. The signal source's output impedance should be less than 600Q to avoid

high frequency loss in long cables

Balanced inputs: Use the XLR or Y-inch (6.3 mm) TRS input jacks, or the barrier strip.

Unbalanced inputs: Connect the unused side of the balanced input to ground, as shown below left. À tip- sleeve Yinch (6.3 mm) connector will correctiy terminate the unused side of the input without modification

For two-channel (stereo) operation, use the inputs for both Channel 1 and Channel 2: for parallel or bridged mono operation, use the Channel 1 input. See the section on operating modes for more explanation. To patch the audio signal to other amps {parallel and bridged modes only}, see the instructions for using parallel inputs on page 9

+ Balanced + Symétrique + Symmetrisch

To Channel 2 speaker

The RMX amplifier offers a choice of output connections, with two Neutrik NLAMD Speakon jacks and two pairs of "touchproof" binding

The Speakon connector is designed specially for high-power speaker connections. It locks in place, prevents shock hazard, and assures the correct polarity.

The upper Speakon jack has both Channel 1 and Channel 2 outputs, so itis especially useful for parallel, bi- amp, or bridged mono operation (see bridged mono operating précautions on page 11). The other Speakon carries only Channel 2 output. See the illustrations at left.

For easier insertion, use the newer- style NLAFC Speakon connectors

with quicklock thumb latches.

SPEAKER CABLING Larger wire sizes and shorter lengths minimize both loss of power and degradation of damping factor. Do not place speaker cables next to

WARNING: To prevent electric shock, do not operate the ampli- fier with any ofthe conductor por- tion ofthe speaker wire exposed.

Outlets + Prises de courant + NetzanschluB + Tomas de corriente

CONNECTIONS Binding post outputs 1. Strip back insulation not more than 13 mm (% inch)

2. Insert wire fully so that none of the conductor is exposed; tighten barrel [use coin if necessary)

3. Non-European models only.

4. Spade lugs must have insulated barrels to prevent electric shock

WARNING: To prevent electric shock, do not operate the ampli- fier with any ofthe conductor por- tion ofthe speaker wire exposed.

Connections for stereo and parallel operations

Connections for bridged mono operation. See bridged mono operating precautions an page 11

SPEAKER CABLING Larger wire sizes and shorter lengths minimize both loss of power and degradation of damping factor. Do not place speaker cables next to

Operating voltage (AC mains)

Make sure you connect the amplifier to the correct AC line voltage, which is shown on the serial number label Connecting to the wrang line voltage is dangerous and may damage the amplifier.

OPERATION AC power switch Before applying power, check all connections and turn down the gain

One second of muting is normal when the amp is turned on or off

The actual voltage gain of the amplifier is shown in dB.

LED indicators The yellow SIGNAL LED indicators

light at approximately 0.1% of full

The red CLIP LED indicator flashes

during overload (clipping)

Ifthe amplifier protection circuitry triggers protective muting, the SIGNAL and CLIP LEDs will not light. this occurs during use, see the Troubleshooting section of this

OPERATION Fan cooling

The fan speed varies automatically to maintain safe internal temperatures. Keep the front and rear vents clear to allow full air flow.

Hot air exhausts out the front of the amp so it does not heat the interior of the rack. Make sure that plenty of cool air can enter the rack, especially if there are other units

which exhaust hot air into it.

Safe operating levels

The amp's protective muting system guards against excessive internal temperatures. With normal ventilation and 4- to 8-ohm loads, the amplifier will handle any signal level including overdrive—but make sure that the speakers can handle the full power! However, lower load impedances and higher signal levels produce more internal heating. Into 2-ahm loads, fréquent or prolonged clipping [indicated by constant flashing of the red CLIP LED) may trigger protective muting.

Bridged mono mode doubles the output impedance of the amp;

4 ohms is the minimum load impedance. Heawy clipping may cause muting. If this happens, see

Troubleshooting, page 23.

= Active crossover PL

TROUBLESHOOTING Problem: no sound

> INDICATION: POWER INDICATOR NOT LIT Check the AC plug. Also check the circuit breaker on the rear panel

Confirm that the AC outlet works by plugging in another device. If too many amplifiers are used on one outlet, the building's circuit breaker may trip and shut off power.

An overload in bridged mono mode may cause the amplifier to click off for several seconds. Check the load impedance (4 ohms minimum), or reduce signal level

An amplifier which keeps shutting off may have à serious internal fault. Turn it off, remove AC power, and have the amplifier serviced by a qualified technician:

> INDICATION: SIGNAL LED RESPONDING TO SIGNAL LEVEL

+_Ifthe yellow SIGNAL indicators are lighting normal, the fault is somewhere between the amp and the speaker. Check the speaker wiring for breaks. Try another speaker and cable

DÉPANNAGE Problème: pas de son

> INDICATION: DEL "POWER"

off éteint aus apagado

TROUBLESHOOTING No sound (continued)

> INDICATION: SIGNAL LED NOT LIT Ithe green POWER indicator LED is lit and the fan is running, vetthe 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. the fan isn't running atall, the amplifier requires senvicing

> INDICATION: CLIP LED FLASHING

+ IFthe red CLIP indicator flashes when signal is applied, the amplifier output may be shorted Check the speaker wiring for stray. strands or breaks in the insulation.

DÉPANNAGE Pas de son (suite)

TROUBLESHOOTING Problem: no sound

> INDICATION: CLIP LEDs

BRIGHT AND STEADY The amplifier is in protective muting

+ One second of muting is normal when the amp is turned on or off.

Overheating will cause protective müting. 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. I the fan isn't ruming at all, the amplifier requires servicing

DÉPANNAGE Problème: pas de son

TROUBLESHOOTING Problem: distorted sound

> INDICATION: CLIP LED FLASHING

+ IFthe red GLIPindicator flashes before the signal indicator does, the load impedance is abnormally low or shorted. Unplug each speaker one-by-one at the amplifier. 1 the GLIP LED goes out when you disconnect a cable, that cable or speëker is shorted. Try another cable and speaker to locate the fault

> INDICATION: CLIP INDICATOR NOT FLASHING

+ This could be caused by a faulty speaker or loose connection. Check the wiring and try another speaker.

+ The signal source may be clipping Keep the amplifier gain controls at least halfway up so that the source doss not have to be overdriven

Problem: no channel separation

+ Check the switch settings on the back of the amplifier. Make sure the “Parallel Input and "Bridge Mode” switches are OFF in dual- channel, bi-amp, or stereo use where different signals go to each channel

Make sure other equipment in the signal path, such as mixers, preamps, ete., are set for stereo, not mono.

DÉPANNAGE Problème:son distortionné

+ Move cabling and signal sources to identify “hot spots” in the system. Cables with faulty shielding are a frequent entry point for hum

+ Unplug the amplifier input to confirm that the hiss is coming from the source or a device upstream:; erratic or popping noises indicate an electronic fault in the offending unit.

To keep the normal noise floor low operate the primary signal source at full level, without clipping, and avoid boosting the signal further between the source and the amplifier.

Problem: squeals and feedback

Microphone feedback should be controlled with mixer controls. If noise continues to build up with zero mic gain, there is a serious fault in the signal processors or cables. Working in succession from the signal source towards the amplifier, check each device in the signal path by reducing its gain or unplugging it.

SPECIFICATIONS | SPÉCIFICATIONS | TECHNISCHE DATEN | ESPECIFICACIONES RMX 850 RMX 1450 RMX1850HD RMX 2450

OUTPUT POWER in watts FTC: 20 Hz-20 kHz @ 0.1% THD, both channels driven

8 ohms per channel 185 260 350 450 4 ohms per channel 280 400 550 650 EIA: 1 kHz @ 0.1% THD, both channels drivenl 8 ohms per channel 200 280 360 500 4 ohms per channel 300 450 600 750 1 kHz @ 1% THD, typical, both channels driven 2 ohms per channel 430 700 900 1200 Bridge Mono: 8 ohms, 20 Hz-20 kHz, 0.1% THD 530 800 1100 1300 8 ohms, 1 kHz, 0.1% THD 600 900 1200 1500 4 ohms, 1 kHz, 1% THD, typical 830 1400 1800 2400 DYNAMIC HEADROOM 2 dB @ 4 ohms 2 dB @ 4 ohms 2dB @ 4 ohms 2dB @ 4 ohms DISTORTION SMPTE-M <001% <001% <002% <0.02%

FREQUENCY RESPONSE?0 Hz-20 kHz, +0/-1 dB

{at 10 dB below rated output power) -3 dB points: 5 Hz and 50 kHz -3 dB points: 5 Hz and 50 kHz -3 dB points: 5 Hz and 50 kHz -3 dB points: 5 Hz and 50 kHz

DAMPING FACTOR > 300 @ 8 ohms > 300 @ 8 ohms > 300 @ 8 ohms > 300 @ 8 ohms NOISE {unweighted 20 Hz to 20 kHz, below rated output} 100 dB 100 dB 100 dB 100 dB VOLTAGE GAIN 31.6x (30 dB) 40x (32 dB) 46x (33 dB} 50x (34 dB} INPUT SENSITIVITY, V RMS

full rated power @ 8 ohms 1.15v (+3.4 dBu) 1.15v (+3.4 dBu) 1.16v (+3.5 dBu) 1.23v (+4.0 dBu)

10K ohms unbalanced 20K ohms balanced

INPUT IMPEDANCE (all models)

CONTROLS (all models) Front: AC switch, Ch. 1 and Ch. 2 gain

Rear: 10-position DIP switch

INDICATORS (all models) POWER: Green LED CLIP:

CONNECTORS (all models)

COOLING (all models)

AMPLIFIER PROTECTION (all models)

Input Active balanced: XLR and 4° (8.3 mm) TRS, tip and pin 2 positive, and barrier stp Output “Touch-Proof” binding posts and Neutrik Speakon'"

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

Red LED, 1 per channel SIGNAL: Yellow LED, 1 per channel

POWER REQUIREMENTS CURRENT CONSUMPTION @ 120 VAC {both channels driven)

Multiply currents by 0.5 for 230V units

Tum-on/turn-off muting AC Coupling

AB Tum-on/turn-off muting AC coupling

AB AB: Class AB complementary linear output

H: Class AB complementary linea

output with Class H 2-step high efficien

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 Ib. (18.6 kg) 35 Ib. (15.9 kg)

A6 printed on rear panel Serial N

Turn-on/turn-off muting Triac crowbar (on each channel)

Turn-on/turn-off muting Triac crowbar (on each channel)

Typical' ul Max Typical' ul Max Typical'_ Full Max’ Typical Full Max Idle| 05 A Idle| 05 A Idle| 11A ldle| 05 A 8Q| 34 41A 744 8Q|37A 544 104 8Q| 394 694 1264 8o| 44 74 64 401 45A G6A ISA 40] 6A S6A BA 4Q| GTA 112A 208A 40| 634 1564 27A 20| 5654 954 174 20| 934 1474 254 2Q| 874 1664 304] 20| 924 23A an POWER CONSUMPTION NOTES

11/8 power with pink noise represents typical program with occasional clipping

21/3 power with pink noise represents severe program with heavy clipping

Continuous sine wave at 1% THD clipping

* Thermal or overcurrent cutback limits duration

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE WARRANTY/| INFORMATIONS DEIGARANTIE-!|INFORMACION DE INFORMATION GARANTIE BEDINGUNGEN GARANTIA

{USA only; see your dealer or distributor)

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.

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,

ie. 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

QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA

“ASC” andthe OSC logo are registered with the U.S. Patent and Trademark Office ©1989, 2001 QSC Audio Products, Inc.

Important Safety Precautions & Explanation of Symbols

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

uninsulated “dangerous” voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of À 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 haz- ardous 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 80°C (122°F).

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 ofthe grounding-type plug. The grounding plug has two blades and a grounding prong. The third prong is provided for our safety. Hthe provided plug does not fit your outlet, consult an electrician for the replacement of the obsolete outlet. Do not cut offthe grounding prong or use an adapter that breaks the grounding circuit. This apparatus must be properly grounded for your safety.

11- Protectthe 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 orthe 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.

TD-000231-00 revA Rack Mounted Amplifier Safety Insert

©2006 QSC Audio Products, Inc.

18 AERAMAERMRANREE, DRARIRLNAENE RER AR NUAD MODC RTE BEA EL. 19- MH RRADURN, PNA NT. AU, MARMAATE, MASTER.

D-000231-00 revA Rack Mounted Amplifer Safety Insert ©2006 QSC Audio Products, Inc.

QSC Audio Products, Inc.

1675 MacArthur Boulevard