JAM Systems Q7 :: 4 x 1600W amplifier
A high-performance range of professional use switch-mode power amplifiers, delivering outstanding premium power from a compact package. Its elegant 1U-footprint reduces rack space and cost, and weighing in at a shade over 10kg, set-up and breakdown of your stage is quicker and easier. Thoughtfully-designed recessed stepped attenuators make for easy and precise matching of gain structures, and a completely modular channel architecture means that each of the four channels has its own dedicated power supply for ultimate stability, with zero crosstalk or interference between channels. Employing a classic pulse-width modulation design, high switch-mode frequency and precise controlling of deadtime makes for exceptionally low distortion, surpassing the quality of traditional transformer-based amplifier designs. The high efficiency power supply is kind to the environment and ensures weight is kept to a minimum, with a circuit tailored for reliability that helps make sure your amplifier will continue to provide you with driving power time after time.
All 4 channels are identical, and each channel has a separate switched mode PSU, the power output is the same regardless of whether one channel is driven or all 4 channels are driven:
1700W into 2 ohms - * EIAJ burst | 850W into 2 ohms - ** 100Hz continuous | 1100W into 2 ohms - 1khz continuous
1400W into 4 ohms - *** 1kHz continuous | 1300W into 4 ohms @ 100Hz
800W into 8 ohms - *** 1kHz continuous
* EIAJ 8:32 burst power measured at 1khz, 1% THD. This represents the maximum power available for signals with a high crest factor, and is approximately equivalent to speaker's published program power. ** 2 ohm power measured with 100Hz sine wave for a 10 second burst. Current limiting reduces the continuous output at 2 ohms to appximately 1300W. This is an indicator of maximum continuous power in bass applications *** 1kHz sine wave tested for 10 second burst with 1% THD
EIAJ ratings are short term burst ratings, but are representative of mid/high signals with a typical crest factor for common music. We have tested these amplifiers at 100Hz into 2 ohms and 4 ohms for purposes of assessing bass response. Continuous signals into low impedances trigger current limiting in the amplifier (self protection) which reduces the output power. Higher crest factor signals are limited by voltage rather than current, which allow higher burst powers into 2 ohms.
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