ERD-1:

• One 5.25" Woofers, two 25mm tweeters

• Sensitivity: 89db (2.83volts @ 1 Meter)

• Recommended amplifier power: 50-200 Watts RMS

• Frequency response: 80-20Khz +/-2db

• Four possible switch postions:

1. Left/Right Bipole
2. Left Dipole
3. Right Dipole
4. Left/Right Inverted Dipole

(read more about Bipole/Dipole settings in the ERM1/ERD1 PDF manual)

• 4.25" deep, 13" wide, 9.5" tall

• 29.5 lbs. pair (boxed) - 11 pounds each, unboxed

ALL ERM/ERT/ERD SPEAKERS:

Drivers

• Proprietary tri-fiber composite cone is light weight and rigid with low resonance

• NBR surround for enhanced cone edge termination

• Proprietary high performance motor structure

• Integrated copper and aluminum shorting rings to reduce distortion and 2nd and 3rd order harmonics

• Flat progressive rate spider with venting under spider

• Cast aluminum frame

• 25mm tweeter

• Wide surround silk dome diaphragm

• High power motor structure
integrated heat-sink mounted on motor structure

• Ferro-fluid cooled voice coil

• Internally damped, low resonance rear chamber

• 4 ohms

Precision Crossover

• Asymmetrical 4th order Linkwitz Riley crossover

• Switchable tweeter level adjustment (+2, 0, -2db)

• Switchable boundary effect Compensation

• Precision metal film capacitors

• Low DCR air core inductors

Additional Features

• Dual speaker terminals for biamped operation

• Critically braced and highly damped MDF cabinet

• Milled terminal recess with integrated milled aluminum 6mm jack plate

• 6mm milled aluminum low diffraction front baffle plate

• Magnetically mounted, acoustically transparent grill

• Non-reflective black satin lacquer finish

INSTALLATION NOTES FOR THE ERD-1

ERT/ERM/ERD Manual
(This is a large PDF file, and may take a few moments to download)

ERD-1 $299 (pair)