audio research
EC-21

Description
Tube 2-way electronic crossover.

Introduced
1980

Discontinued
?

Revisions
-

Options
216 (6dB capacitor kit) - $9
218 (18dB capacitor kit) - $15

MSRP (US new retail)
$550. Later increased to $650. Later increased to $695. Later increased to $795.

Specifications

Distortion < .01% total harmonic distortion @ 1.5V RMS output
Noise 90 dB below 1.5V RMS output
Gain High pass section, fixed, 0dB. Low pass section rear panel adjustable +9dB
Crossover points  
Crossover slopes  
Tube complement (3) 12AX7
Power requirements  
Other  
Dimensions 19" W x 5.25" H x 10.25" D
Weight 16 lbs. Shipping.

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