Tech Specs – QSC K12 Speakers Review
- LF Driver: 12″ Cone, 4″ Voice-coil
- HF Driver: 1.75″ Diaphragm Compression
- Amplifier: Bi-amplified Class D
- Output Power Peak: 2000W (1000W LF, 1000W HF)
- Output Power Continuous: 1000W (500W LF, 500W HF)
- Frequency Response: 52Hz – 18kHz (-6dB) | 48Hz – 20kHz (-10dB)
- Maximum Peak SPL: 131dB
- Crossover Frequency: 2kHz
- Enclosure: ABS Thermoplastic
- Mounting: Pole, Floor Wedge, Fly
- Inputs: 2 x XLR/TRS Combo, 2 x RCA
- Outputs: 2 x XLR (Direct), 1 x XLR (Line)
- Controls: LF Switch (Ext Sub, Norm, Deep), HF (Vocal Boost, Flat), Front LED (Power, Limit, Off), Mic/Line Switch, Gain A&B Knobs, Power Switch
- Dimensions: 23.7″ × 14″ × 14″
- Weight: 41 lbs.
Overview By Gearrank.com
The K12 was the biggest and the loudest of the three sub $1000 original K Series powered speakers from QSC, with a max SPL of 131dB. It’s popular with bands, DJs, and audio engineers for use both as an FOH speaker and a stage monitor. It provides a total of 1000 watts via the Class D amplifiers and can peak at
2000 watts.
It has built-in DSP (Digital Signal Processing), which performs a range of functions to keep the sound crisp and clear across a wide range of frequencies and volumes – one proprietary function is DEEP (Digital Extension and Excursion Processing) which allows it to produce low frequencies at volumes not usually associated with a speaker enclosure as small as this – some people even report they get a similar response to using a subwoofer.
It features a 12″ LF driver that is housed in a bigger cabinet, which makes it heavy yet reasonably portable.
High-frequency and Low-frequency EQ switches are available for fine-tuning the sound to your preference, its most prominent feature being Voice Boost, which is ideal for speeches and for emphasizing vocals.
Front View:

$450
All sales are local pick-up only. Contact Brown Dog Amp Works for details.
