Mackie M800 Spec Sheet - Page 1

AMPLIFIER M•800 M•800 High-Current Power Amplifier  The Mackie M•800 is a dual channel, high output power amplifier that incorporates a number of unique features including FR "Fast Recovery" design, high continuous current output, and a T-Design constant-gradient cooling tunnel for improved cooling efficiency and output device reliability.  The M•800 is rated at a continuous output of 150 watts per channel into 8Ω, 225 watts per channel into 4Ω and 280 watts into 2Ω. In bridge mode the M•800 is rated at 450 watts into 8Ω and 560 watts into 4Ω. Variable low-cut filters on each channel, with a range from Off to 170Hz, enable tighter bass response and a Constant Directivity Horn EQ improves high-frequency reproduction. The CD Horn EQ is 6 dB/octave and its "knee" position is sweepable from 2kHz to 6kHz. The built-in limiter helps eliminate clipping. Inputs are balanced/unbalanced 1/4" and XLR, and XLR thru connections allow the full-range signal to be routed to another M•800. Speaker connections on the M•800 are 1/4" and binding posts for the U.S. version, and Speakon® and binding posts for the international version. An amp mode switch selects stereo, mono, or bridge operation.  To effectively deal with clipping, an amplifier must be able to recover almost instantaneously. That is the definition of "Fast Recovery." Rather than using negative feedback to help control clipping distortion, the M•800 employs a very sparse amount of negative feedback. The use of Baker Clamp circuits on the positive and negative voltage amp stages prevents saturation (and latching) during periods of overdrive. In addition, a transistor senses when the Baker Clamp is active and acti- (continued on page 8) Features  800 watts max, 560 watts continuous @ 4 ohms bridged  Ultra-low-noise/low-distortion design  Fast Recovery circuitry reduces distortion at clipping  Two 2nd order, 12 dB/octave, Bessel low-cut filters with variable frequency from Off to 170Hz  Constant directivity horn EQ/Air EQ with variable frequency from 2kHz to 6kHz and on/off switch  Limiter with on/off switch  Balanced/unbalanced 1/4" and XLR inputs  XLR thru outputs  1/4" jacks (Speakon® connectors on international version) and 5-way binding post outputs (both models)  Detented gain controls calibrated in dB and volts  Signal present and OL LEDs  Channel Status LEDs  Superior T-Design cooling  Five-year, limited warranty (U.S. only) M•800 RELATED PRODUCTS M•1400/M•1400i Power Amplifiers, 1202-VLZ PRO 12-Channel Mic/Line Mixer, 1402-VLZ PRO 14-Channel Mic/Line Mixer, 1604 VLZ PRO 16-Channel Mic/Line Mixer, 1642-VLZ PRO 16-Channel Mic/Line Mixer, SR24•4VLZ PRO 24 Channel Mic/Line Mixer, SR32•4-VLZ PRO 32 Channel Mic/Line Mixer, CFX Series 12, 16, and 20 Channel Mic/Line Mixer w/Digital Effects, C300z 2-Way Loudspeaker, C200 2-Way Loudspeaker, SWA1501 and SWA1801 Active Subwoofers. Applications  Live sound/music reinforcement for churches, clubs, schools, conference centers, hotels  High level A/V playback  Large speech systems 1 OF 8 PAGES