QSC GX5 Stereo Power Amplifier (Used)
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Maximum performance and portability with very flexible I/O.
The QSC GX5 Stereo Power Amplifier is ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC designers, headed by Pat Quilter, have optimized output and appearance of the rackmountable GX5 while reducing raw material cost and weight. The GX5 power amplifier provides full performance for 500 watt (Program) speakers and supplies maximum possible power to 4 ohm and 8 ohm loads. Owners of popular 4 ohm loudspeakers (dual-woofer, two-way models and many subwoofers) will find the 700 watt (4 ohm) power of the GX5 an ideal match.
The GX5 power amp uses a Class H system, based on key elements of the PLX Series, almost doubling power in the same size and weight. QSC design expertise allows the output devices to shift from low-power to high-power rails in less than a millionth of a second, ensuring that the output power is always right where it needs to be without excess loss.
Features
- Power levels matched to the most popular speakers used by entertainers
- Optimized for maximum real-world headroom into 4Ω and 8Ω speaker systems
- Inputs: XLR, 1/4" TRS and phono input connectors for compatibility with any source
- Outputs: Speakon® combo accepts, 1/4" (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems.
- Minimum depth chassis (10.1"/257 mm) fits in compact, inexpensive effects racks
- Lightweight — less than 26 lbs (12.5 kg)
- Detented gain controls for precise setting and matching of sensitivity
- GuardRail™ automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show
- Front panel LEDs monitor Power, Signal and Clipping
- Subwoofer/Satellite crossover built-in
Order today and enjoy legendary QSC quality and reliability.
GX5 Stereo Power Amplifier Specifications:
- Power rating:
- 8Ω / both channels driven / 1 kHz: 500 W
- 8Ω / single channel driven / 1 kHz; 600 W
- 4Ω / both channels driven / 1 kHz; 700 W
- 4Ω / single channel driven / 1 kHz; 850 W
- 2Ω / both channels driven / 1 kHz: 350 W
- Distortion (typical): 20 Hz - 20 kHz: 1 dB below rated power 8Ω: less than 0.05% / 4Ω: less than 0.1%
- Signal to Noise: (20 Hz - 20 kHz) 100 dB
- Input Sensitivity: 1.2 Vrms
- Voltage Gain (8Ω): 34.4 dB
- Output Circuitry: 2-tier Class H
- Power Requirements (1/8 power, pink noise at 4Ω, 120 V):6A
- Frequency Response: 20 Hz - 20 kHz, +0, 1 dB
- Dynamic Headroom (4Ω): 2 dB
- Damping Factor: 100
- Input Impedance (Ω): Greater than 20k (balanced)
- Maximum Input Level: +24 dB (16 Vrms)
- Input Connectors (each channel): 3-pin XLR and 1/4" TRS, balanced, parallel Phono, unbalanced
- Output Connectors (each channel) Speakon®, 1/4", Binding Posts
- Amplifier and Load Protection: Short circuit, open circuit, thermal, RF protection
- Load protected against DC faults
- Front Panel Controls and Indicators: Gain controls, 21 detents
- Red Clip LEDs, proportional, 0.1% THD threshold
- Green Signal LEDs, threshold -35 dB
- Blue Power LED, AC on
- Rear Panel Controls: Full Range / Crossover switch
- 100 Hz, 3rd order LP (sub), 2nd order HP (top)
- Dimensions (HWD): 3.5" (2RU) x 19" x 10.1" (89 mm x 483 mm x 257 mm)
- Weight Shipping / Net: 31 (14 kg) / 26 lbs (12 kg)
- Agency Approvals: UL, CE, RoHS/WEEE compliant
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Review Snapshot®
by PowerReviews(based on 23 reviews)
Ratings Distribution
Pros
- Easy to use (3)
- Excellent sound (3)
Cons
Best Uses
Most Liked Positive Review
Nice Power Amp
I just got this amp to replace a crummy Nady one that went bad. It has been excellent so far powering a pair of 15 inch mains and a pair of 12 inch monitors. ...Read complete review
I just got this amp to replace a crummy Nady one that went bad. It has been excellent so far powering a pair of 15 inch mains and a pair of 12 inch monitors. There are alot of hookup options and plenty of power. I previously bought a Peavey IP3000 and it was a piece of junk. I returned it for the QSC and am really satisfied now. The QSC GX5 is a good choice for a small to mid-sixe PA setup.
VS
Most Liked Negative Review
Great Amp!
Love this amp! I run it less than half way up and its PLENTY loud for the DJ gigs I do... Only thing I don't like is the cooling fans are a little ...Read complete review
Love this amp! I run it less than half way up and its PLENTY loud for the DJ gigs I do... Only thing I don't like is the cooling fans are a little loud (not that thats an issue when the musics on though)
Reviews
Reviewed by 23 customers
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Displaying reviews 1-10
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Pros
- Easy To Use
- Excellent Sound
- Very Clean Power
Cons
- Fan Is A Bit Loud
- Fan Is Bit Loud
- Fan Is Loud
Best Uses
- Events
- Live Sound Re- Enforcment
- Performances
Comments about QSC GX5 Stereo Power Amplifier:
GX5 is Powerful and Clean !
I use one channel to power my JBL 15's Mains
and the other channel to power 2-12" floor monitors.
power/Vol knobs has never been past the 1-2 o'clock position.
going to buy one more for a pair of sub-woofers
and get rid of the powered ones.
CON's not that this is a deal breaker
The Fan it a bit loud but once music is going you don't hear it at all.
and these unit are a bit heavy! but its the price you have to pay for a true power rating not like these whimpy D Class Power amps that weigh nothing and say thier 1000 watts but sound like they are really 200 watts
price is reasonable too!
Pros
- Easy To Use
- Excellent Sound
- Powerful
Cons
Best Uses
- Events
- Performances
Comments about QSC GX5 Stereo Power Amplifier:
We have a pair of QSC RMX 850 amplifiers. When our Carvin amplifier started to go, we knew we had to replace it. We looked at the QSC RMX 850s and saw that the GX5 was the same price.
Wow! What a difference. The GX5 is so much better and cleaner sounding than our old Carvin. It is also more powerful than the RMX 850 amps.
This is a main amplifier for our house auditorium sound. It has performed quite well. I like it so much that the RMX 850's will be replaced with a GX5 and a GX7 when we can afford the spare cash.
Pros
- Easy To Use
- Excellent Sound
- Powerful
Cons
Best Uses
- Amateur Recording
- Home Studio
Comments about QSC GX5 Stereo Power Amplifier:
easy to use and sounds great
Comments about QSC GX5 Stereo Power Amplifier:
I just got this amp to replace a crummy Nady one that went bad. It has been excellent so far powering a pair of 15 inch mains and a pair of 12 inch monitors. There are alot of hookup options and plenty of power. I previously bought a Peavey IP3000 and it was a piece of junk. I returned it for the QSC and am really satisfied now. The QSC GX5 is a good choice for a small to mid-sixe PA setup.
Comments about QSC GX5 Stereo Power Amplifier:
For my small PA these are more than adequate. Runnig OAP tops with B&C loaded subs which are all 100db + in sensitivity. The amp never gets hot. I use the CX series in my large scale PA but the GX (although an entry level amp) is very nice. Sound is clean and clear and the GX 5 gets loud enough for most applications. I have 8 in my small system. Manual could be better for those who do not know how to use the basic features of an amp, but it really does not get easier than these basic amps. There are poor reviews from some once in a blue moon, but I believe these people do not have the tech skills to set gain structure at the mixer or amp. Use quality gear in the whole chain and NO ADAPTERS and you will not be disappointed.
Easy to use and nice x-over feature for an amp of this price from a very reputable mfg. Only wish x-over was adjustable.
Made like other QSC products...reliable.
Comments about QSC GX5 Stereo Power Amplifier:
Good amp but it's vent's fan is so noisy. It's manual should be better written in concise English. I don't know why all electronic industry so cheap not to provided a DVD how to properly Installation.I am willing to pay a hidden charge or charges for it. I went to three or four techs for advise how to install all these amp, Mixer ,two passive speaker and pow er sub. All of them included SQC manufactory expert gave contrary accounts and none work. At the mixer I have to hooked up to the PHONE in order to get the power sub to work but the sound came out extremely terrible no matter how you adjusted these 12 channels mixer.
Comments about QSC GX5 Stereo Power Amplifier:
Love this amp! I run it less than half way up and its PLENTY loud for the DJ gigs I do... Only thing I don't like is the cooling fans are a little loud (not that thats an issue when the musics on though)
Comments about QSC GX5 Stereo Power Amplifier:
Awesome amp...owned one for two years but another one to bridge...guess what?? These amps do not bridge you can set them for in individual output which builds you up to about 600w but NO BRIDGING. It is a workhorse and if you get a little over zealous with the power it shuts down and saves your system...running PVDJ S5's, Kustom, Gemni, and EV Speaker systems with this unit and solo and keeps on tickin!! Musicians Friend provided great support via the technical support to help me with my bridging problem.
Comments about QSC GX5 Stereo Power Amplifier:
Have owned this unit for over a year now...picking up what sounds like a grounding problem static hum. Trashed my very low end radioshack eq and bought a behringer and doing much better but still some hum when not playing any music. At a loss at this point but its bearable...Musicians Friend has been a real bud trying to help me work out the problems. will send them another tech support help me please email. Not overmodulating and don't know if its the amp or not at this point.
Comments about QSC GX5 Stereo Power Amplifier:
This is my first QSC amp. Compared to my other amps: Samson, Crown, and Peavey, this seems to be a good amp. It is somewhat lighter than the others and produces quality sound. The only thing I noticed is the fan is noisier than any other amp I own. I don't know if all QSC amps are that way or the GX line or if it's just mine. It's not a problem when you are actually playing but you can hear it in a church environment between songs.
