TH835 is a three-way 15" coaxial full range horn speaker.
The rotatable combination of HF-MF drivers unit delivers fidelity and precise directivity.
Another feature of the cabinet is its flexible coverage, and also with different install options.15" woofer
component is loaded behind the MF in a more compact enclosure to create much higher SPL. TH835 isoperated in combination with an external active crossover or a hi-cut filter.

TH818B subwoofer is developed with special purpose of achieving ultra low frequency and higher output better than TH600 Series. So a brand new highly qualified 18"LF driver is greatly needed.
The paper cone is re-designed and the spider is modified to eliminate the airflow noise while it's used at large dynamic range. Af ter the magnetic circuit is modified as well and the stroke of voice coil is increased,the original paper cone and frame are found incapable of meeting the requirements. The paper cone and frame have to be changed. spider is further improved. Even the wiring method is re-designed for the purpose. The subwoofer delivers powerful, low-ranging and dynamic bottom-end response deep to 30Hz-50Hz with lower nonlinear distortion and higher output af ter the specification of T/S is adjusted and the space of inverted phase tube is enlarged.

We didn't get the current brand new 18"woofer until the 8th sample was successfully made.
The TH818B is a subwoofer designed to extend low-range frequency response It is loaded with a directradiating 18"cone loudspeaker housed in a phase inverted enclosure. The Sub delivers powerful, low-ranging and dynamic bottom-end response deep to 30Hz.
It is finely suited for application in which a sound system requires a more punching low-frequency
reinforcement.

TH828B subwoofer is developed with special purpose of achieving ultra low frequency and higher output better than TH600 Series. So a brand new highly qualified 18"LF driver is greatly needed.
The paper cone is re-designed and the spider is modified to eliminate the airflow noise while it's used at large dynamic range. Af ter the magnetic circuit is modified as well and the stroke of voice coil is increased,the original paper cone and frame are found incapable of meeting the requirements. The paper cone and frame have to be changed. spider is further improved. Even the wiring method is re-designed for the purpose. The subwoofer delivers powerful, low-ranging and dynamic bottom-end response deep to 30Hz-50Hz with lower nonlinear distortion and higher output af ter the specification of T/S is adjusted and the space of inverted phase tube is enlarged.

We didn't get the current brand new 18"woofer until the 8th sample was successfully made.
The TH828B is a subwoofer designed to extend low-range frequency response It is loaded with a directradiating 2X18"cone loudspeaker housed in a phase inverted enclosure. The Sub delivers powerful, lowranging and dynamic bottom-end response deep to 30Hz.

It is finely suited for application in which a sound system requires a more punching low-frequency
reinforcement.