Power Amplifiers Technology Showcase
Mar 22, 2011 12:00 PM, By Mark Johnson
Applications for power amplifiers run the gamut from elevator music to brute force in a concert setting.
The MA 4 multichannel amplifier from Rane is a 4-channel, 1RU, 8lb. device that provides 100W per channel. Input is via balanced Euroblock connectors. The MA 4 features switchable soft-knee compression and downward expander.
Weighing in at 45.2lbs, the Samson PG3800 provides 900W per channel at 4§Ù. Inputs are electronically balanced XLR and 1/4in. TRS connectors. Back-panel controls include 12dB-per-octave LF filter and a limiter. Output is via Speakon connectors, or five-way binding posts.
The Stewart Audio World 1.6 professional power amplifier features a switch mode power supply and Class H amplifier design. Output is 550W at 4§Ù, and the amplifier weighs 17lbs. and is 2RU high. Input connectors are XLR or 1/4in. and barrier strip.
Designed for outdoor installation the weatherproof, monoblock Technomad PowerChiton 4 provides 1800W at 4§Ù. Networking options include Ethernet/IP, RF, and twisted pair. Mounting options include flange, pole, or speaker mount.
TOA Electronics offers the multichannel DA-550F with 550W per channel at 4§Ù. The 4-channel amp weighs 19.4lbs. and is 2RU high. Each channel of the Class D amplifier has its own independent power supply.
Yamaha's XP7000 features XLR and Euroblock inputs and output power is rated at 950W into a 4§Ù load. Input gain is selectable between +4dBu, 26dB, and 32dB. Also included is an interface for remote monitoring and control. The XP7000 can also be used to drive 70V lines (stereo).
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