A single-driver design using the famous and very popular full-range Fostex FE108EZ 4" driver. At 92dB efficiency and 8 ohms, they are easy to drive with any amplifier and they especially match low powered tube amplifiers very well.

Specifications:
Single-driver small tower speakers
Vflex turbo-charging sub-bass technology
Natural sound Fostex FE108E Sigma 4" driver
Machined front and back baffles with surface vibration breaking V grooves
Minimal coloration through sturdy, heavily braced cabinets
Inside baffle panel asymmetric focal grooves break and spread standing sound wave
Gold plated Cardas multi function terminals
Tripod footing with integrated adjustable spikes
Sensitivity: 92dB 1W/1m
Impedance: 8 ohms
Recommended amplifier power: From 3.5 watts (tube amp friendly)
Frequency response: 20 - 18,000 Hz
Dimensions: 36" H x 10" W x 16" D
Weight: 80 pounds each (36 kg each)

Click here for full review