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[39] [40] Both products were 5.0 passive systems, with the Acoustimass 6 using "single cube" satellite speakers [41] and the Acoustimass 10 using "double cube" satellite speakers. [42] The "Acoustimass 15" 5.1 is a true 5.1 system was sold from 1998 until 2006 it includes an amplified sub, [43] and the "Acoustimass 16" 6.1 system was sold from ...
Some keyboard amps may be equipped with a compressor or limiter to protect the speaker from damage when the amplifier is being used at high volume levels. Some keyboard amps (e.g., Yorkville's 200-watt keyboard amp and Peavey's KB-4) have an extension speaker jack, which enables the amp to be connected to a second speaker cabinet for more volume.
Loudspeaker enclosures range in size from small "bookshelf" speaker cabinets with 4-inch (10 cm) woofers and small tweeters designed for listening to music with a hi-fi system in a private home to huge, heavy subwoofer enclosures with multiple 18-inch (46 cm) or even 21-inch (53 cm) speakers in huge enclosures which are designed for use in ...
A micro audio amplifier for boosting the output of line level sources to headphones or small speakers. Edge length 4 cm, weight 16 g, power output ca. 0.1 W into a 32 Ohm load. The final stage of amplification, after preamplifiers, is the output stage, where the highest demands are placed on the transistors or tubes.
For most audio applications more power is needed at low frequencies. This requires a high-power amplifier for low frequencies (e.g., 200 watts for 20–200 Hz band), lower power amplifier for the midrange (e.g., 50 watts for 200 to 1000 Hz), and even less the high end (e.g. 5 watts for 1000–20000 Hz).
Naim power amplifiers are given numbers according to their power output into nominal load of 4 ohms. The company's first amplifier, the NAP 160, is a two-channel power amplifier with an output of 60 watts per channel; the NAP 135, which is a one-channel amplifier based on the same design as the NAP 250 rated at 135 watts. A custom-built very ...
Using a crossover to separate the sound into low, middle and high frequencies can lead to a "cleaner", clearer sound (see bi-amplification) than routing all of the frequencies through a single full-range speaker system. Nevertheless, many small venues still use a single full-range speaker system, as it is easier to set up and less expensive.
A single amplifier can usually power a woofer and a tweeter only through a post-amplifier crossover filter, which protects each driver from signals outside its frequency range. Bi-amping of speakers requires double the channels of amplification and can be accomplished using two ordinary amplifiers in either a vertical or horizontal arrangement.
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