Bowers and Wilkins 685 S2 bookshelf speaker

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For lighter budgets B & W offers up the 600 series.
Starting with the 685 bookshelf speaker
http://www.bowers-wilkins.com/Speakers/Home_Audio/600_Series/685.html
Technical features Decoupled Double Dome aluminium tweeter with Nautilus™ tube loading
Kevlar® brand fibre cone bass/midrange
2-way vented-box system
Drive units 1x ø25mm (1 in) aluminium dome high-frequency
1x ø165mm (6.5 in) woven Kevlar® cone bass /
midrange
Frequency range -6dB at 45Hz and 50kHz
Frequency response 52Hz – 22kHz ±3dB on reference axis
Sensitivity 87dB spl (2.83V, 1m)
Nominal impedance 8Ω (minimum 3.5Ω)
Crossover frequencies 4kHz
Recommended amplifier power 25W – 100W into 8Ω
Max. recommended cable impedance 0.1Ω
Dimensions Height: 345mm (13.5 in)
Width: 190mm (7.5 in)
Depth: 324mm (12.8 in)
Net weight 6.8kg (14.9 lb)