I think the ELS3 is rated at 4 ohms, so you need to factor that in when choosing your amp/receiver.
Specifications
Description: Two-way, reflex-loaded, magnetically shielded, stand-mounted loudspeaker.
Drive-units: 1" (24mm) aluminum-dome, neodymium-magnet tweeter; 5" (130mm) polypropylene-cone woofer.
Crossover frequency: 3kHz.
Power handling: 100W.
Frequency range: 65Hz-20kHz.
Impedance: 4 ohms nominal.
Sensitivity: 87dB/W/m.
Dimensions: 10.5" H (270mm) by 6.75" W (174mm) by 7.5" D (195mm). Weight: 10 lbs (4.5kg).
Finishes: light or dark cherry vinyl.
Serial numbers of units reviewed: 216a & b.
Price: $299/pair. Approximate number of dealers: 25.
Manufacturer: Epos Ltd., 12 Avebury Court, Mark Road, Hemel Hempstead, Herts. HPW 7TA, England. Tel: (44) (0)11442-260146. Web:
www.epos-acoustics.com. US distributor: Music Hall, 108 Station Road, Great Neck, NY 11021. Tel: (516) 487-3663. Fax: (516) 773-3891. Web:
www.musichallaudio.com.