drive unit =driver = haut-parleur
voir lien ci-dessous, dive unit , suivi des dimensions des haut-parleurs

"Front Speakers

Handle Power 200W + 200W
Frequency Response 32Hz-20KHz
Drive Units: 1"+6.5" X 3(8 ohm)
Sensitivity: 90dB
Dimensions: 42.75" H x 9.5" W x 13" D

Center Speaker

Handle Power 160W
Frequency Response 65Hz-20KHz
Drive Units: 1"+4" X 2(8 ohm)
Sensitivity: 87dB
Dimensions: 6.75" H x 19.75" W x 6.75" D

Surround Speakers

Handle Power 120W+120W
Frequency Response 65Hz-20KHz
Drive Units: 1"+4" (8 ohm)
Sensitivity: 87dB
Dimensions: 12" H x 6.75" W x 6.75" D

Subwoofer

Built in 150 watt Amplifier
Peak dynamic handing of 750 watt
Drive unit 10 inch long throw woofer
Frequency Response 25Hz-200Hz
Reinforced cellular woofer construction
Cleaner audio output"
https://www.acekaraoke.com/acesonic-sp-710-surround-sound-sp...

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Note added at 1 hr (2017-11-16 07:36:29 GMT)
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"Supravox drive units
https://www.supravox.fr/anglais/les_hp.htm
Supravox drive units - High Fidelity loudspeakers and speakers ... Supravox : haut-parleurs, enceintes acoustique, amplificateurs ... Its objective, to maintain the philosophy of SUPRAVOX ,full range driver units and high efficiency. We work still ..."

" 12" twin cone drive unit with extended high frequency response 2" high temperature copper voice coil for increased reliability and 200Wrms (AES standard) power handling Optimised cone neck/voice coil assembly for increased strength, minimising high frequency distortion and improving sound quality Secondary cone terminated by pressure formed cloth dust cap for enhanced mid-band clarity High efficiency magnet structure design delivers improved sensitivity Double roll surround for greater excursion control and smooth frequency response"
http://en.toutlehautparleur.com/marque-tlhp-1/celestion/seri...