Many Years Ago,

I had a hi-fi system, 

image credit Stratton Acoustic, with a number of speakers, but none looked as intimidating as these, behold the mighty Stratton Acoustics Elypsis 1512, the Elypsis1512 driver complement comprises two 380mm low frequency drivers, a single 300mm midrange driver and a waveguide loaded and mechanically decoupled 29mm dome tweeter, for the technical: 

Type: Quad reflex loaded three-way passive speaker system

Cabinet: Substantially braced birch ply

Bass Drivers: 2 x 380mm (15 inch) with paper diaphragm and ferrite motor

Mid Range Driver: 300mm (12 inch) with selectively hand doped paper diaphragm and NeFeB motor

Tweeter: 29mm (1.2 inch) waveguide loaded NeFeB motor soft dome

Crossover: Part-impedance compensated three-way with asymmetric second and third order slopes

Crossover Frequencies: 350Hz and 2.5kHz

Frequency Responses: 45Hz to 18kHz ±2dB

Low Frequency Cut-off: -6dB @ 28Hz

Midband Sensitivity: 96dB for 2.83V @ 1m

Nominal Impedance: 8Ω (8Ω minimum between 100Hz and 10kHz)

Group Delay: <12mS above 40Hz

Amplifier Compatibility: Any

EQ Options: Mid and HF bands ±2dB

Connections: Tri-wire/Tri Amp Neutrik Speakon sockets

as you might expect all of this does not come cheap, the entry level Pure range is £69,000, the Bespoke £74,000, both prices are for a pair, naturally if you want to go up market there is the Absolute range, but you have to enquire the price of those, as your personal input is required, I have to say the speaker set up I had was a tad cheaper! if you are in the market for speakers, you might find the pair you want here.