Polski (PL) 
The only significant difference between the speakers is a greater weight of the ferrite unit. For details please refer to FaitalPRO website - you can compare specific speakers (we choose LF LOUDSPEAKERS option and add appropriate items to compare):
Devices with the option of the ferrite speaker (limited time offer):
SAS-18XPRO
SAS is a mobile and compact high-power sound system designed for medium club and open-air events. This set consists of a subwoofer with an integrated 3-channelled mixer and satellite loudspeakers. An option to application of a LF speaker with the ferrite magnet.Product details
SAS-18XPRO/T
SAS-18XPRO/T is a variation of SAS-18XPRO with transformer power supply. The set consists of a subwoofer with an integrated 3-channelled mixer and satellite loudspeakers. An option to application of a LF speaker with the ferrite magnet. Product details
GSB-1218XPRO/8
Passive subwoofer. Its main advantages are aligned band, high fidelity of sound and imposing efficiency, obtained by special construction of cabinet. 8 Ohm version. An option to application of a speaker with the ferrite magnet .Product details
GST-1218XPRO/8
Very efficient subwoofer equipped with neodymium 18" speaker by FaitalPRO, designed for professionals. Its main advantage is deep bass. Best for mass events, discos, concerts, etc. 8 Ohm version. An option to application of a speaker with the ferrite magnet. Product details
GSB-1218AXPRO
Active subwoofer designed for professionals. Its main advantages is deep bass. Best for mass events, discos, concerts, etc. Equipped with top-notch neodymium speaker by FaitalPRO. An option to application of a speaker (8 Ohm) with the ferrite magnet. Product details
GST-1218AXPRO
Very efficient subwoofer equipped with 18" neodymium speaker by FaitalPRO. Its main advantages are aligned band, high fidelity of sound and imposing efficiency, obtained by special construction of cabinet. An option to application of a speaker (8 Ohm) with the ferrite magnet. Product details