F E A T U R E S A N D S P E C I F I C A T I O N S
18
9
Features and Specifications
•
Frequency response -- 30 Hz - 40 kHz +/- 3 dB on axis (in room)
•
Sensitivity -- 85 dB/1W/1m
•
Power handling -- 40W - 400W RMS/ch/8 Ohm recommended; higher than
400W risks damage; 120W nominal for max steady state SPL; 240W for full
headroom for transients
•
Impedance -- 8 Ohms nominal (4 Ohms minimum at low bass frequencies only)
•
Peak SPL -- 105 dB (pair playing music at 4 m [13'] in mid-sized room -- 4.5 m x
7.3 m x 3.0 m (15' x 24' x 10')
•
Fully enclosed, not dipoles, makes placement easy
•
Listening area
o
Full spectrum 2 m wide @ 4 m (6.5' wide @ 13')
o
Very tight vertical dispersion and relatively narrow horizontal dispersion
conserves recorded ambience, reduces interaction with the room, and
sharpens the soundstage, yet is wide enough to avoid a headphone effect
•
Crossover -- 1st order @ 500 Hz -- far below the disturbance-sensitive hearing
region of 1 kHz - 3 kHz; entire midrange and treble carried by the electrostatic
elements; minimum phase operation through crossover region
•
Secondary partial crossover -- 1st order at 5 kHz -- limits upper treble from half
width of ESL panel -- controls dispersion and flattens response without an
electrical rolloff network
•
airLayer rolls off 2
nd
order below 2 kHz, 1
st
order above 6 kHz
•
2.5.5 way, quasi-line configuration
o
Woofer mounted below ESL array; ESL panels employ half-split-response
(1.5 way ESL), additional woofer in back covering deep bass only
o
Woofer radiation pattern mates well to ESL array
o
Reduces room mode coupling and eases placement
o
Excellent phase alignment for soundstage focus
o
Vertical image stability
o
Minimal floor bounce effect
o
Recorded image height is well presented, even above tops of speakers
•
Woofer notch control -- two settings:
Stand-mount
and
Bookshelf
o
Stand-mount
runs the speakers with a flat response for mounting on stands.