Mackie M1400/M1400i Spec Sheet - Page 1

M•1400/M•1400i AMPLIFIER M•1400/M•1400i M•1400/M•1400i High-Current Power Amplifier  The Mackie M•1400/M•1400i is a dual channel, high output power amplifier that incorporates a number of unique features including FR "Fast Recovery" design, high continuous-current output, built-in subwoofer crossovers, and a T-Design constant-gradient cooling tunnel for improved cooling efficiency and output device reliability.  The M•1400/M•1400i is rated at a continuous output of 250 watts per channel into 8Ω, 425 watts per channel into 4Ω and 630 watts into 2Ω. In bridge mode the M•1400/M•1400i is rated at 850 watts into 8Ω and 1260 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 is channel independent and helps eliminate clipping. Inputs are balanced/unbalanced 1/4" and XLR, and XLR thru connectors allow the full-range signal to be routed to another M•1400/M•1400i. Speaker connections on the M•1400 are Speakon® and binding posts, while speaker connections on the M•1400i are 1/4" and binding posts.  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•1400/M•1400i 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 activates the internal limiting circuits. This results in no latching, instant recovery from overdriving the amp, and a superior sound. Features  1400 watts max, 1260 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 (M•1400i) or Speakon® (M•1400) connectors 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) (continued on page 8) RELATED PRODUCTS M•800 Power Amplifier, 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