Crossovers or Isolators |
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Short introduction
A crossover sends the signal divided between the various frequency ranges to individual amps and speakers (typical: 20-100Hz to a pair of subs, 20-20000Hz to fullrange speakers and 6000Hz-20000Hz to the tweeters), while an isolator takes the summed sound and sends it further to a single output source. An isolator is essentially a simple EQ device with a lot of range in each band.
The legend of crossovers: Richard Long and Associates (RLA)
RLA owned by Richard Long, produced many different crossovers. RLA crossovers have been designed by Alan Fierstein present owner of Acoustilog. Mr Fierstein retains the complete schematics and still evaluates, repairs, modifies frequencies and gain, and customizes these old units.
Disco Sound Associates X-1000: the ancestor of X-2000 (before Alan Fierstein design) RLA X-2000: the first crossover produced by RLA, 4 ways x-over, 2 racks space, metal knobs. Paradise Garage had it originally. RLA X-3000: the most famous unit, 3 ways x-over, 1 rack space, red knobs. RLA X-4000: 1 rack space version of X-2000, the upgrade crossover of Paradise Garage. RLA X-5000: special version with level control of sub-bass, 3 ways x-over. RLA X-6000e: only 6 units produced, 5 ways x-over.
Crossovers
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Disco Sound Associates X-1000
discontinued product
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Dsx 3000
discontinued product
3 Way Stereo Crossover 24Db/Octave Slopes
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clone of famous RLA X-3000
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RLA X-2000
discontinued product
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RLA X-3000
discontinued product
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Isolators
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lot of famous customers for this unit...
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Discrete FET circuitry |
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2 inputs / 2 outputs
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Electronique & Spectacle X 3004
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Electronique & Spectacle EX 3004
Dual channels version of X3004 made for Gary Stewart (GSA NY)
unit installed in Club Zouk (Singapour) |
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Electronique & Spectacle XFX 3004
special version for Dimitri From Paris
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A new product..... 3 band isolator...... let's see and hear it !
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New isolator |
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Last Update: December 15, 2005 |
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