Pioneer TAD-R1 owner manual Bass Drivers, Excursion mm, BL 14 12 10 8

Bass Drivers

The foundation of the TAD Reference One loudspeaker is the bass drivers, as shown in Figure 3. The driver cones are constructed from a tri-laminate of front and rear-woven aramid fibers that sandwich a foamed acrylic core. This provides enormous strength to the cone in order to resist any flexing due to the high forces exerted during loud bass passages.

To achieve high drive linearity, the motor structure employs short coil and long gap geometry, Faraday shorting rings, and a novel flux path for even lower distortion. Combined with advanced spider and multi-roll surround design, the bass driver has over 30

mm(1.25 in.) of linear drive capability, as shown in Figure 4.

Figure 3. The TAD Reference One’s Bass Drivers.

BL 16

14

12

10

8

6

4

2

0

0 10 20 30 40 50

Excursion (mm)

Figure 4. BL versus excursion for the TAD Reference One’s bass driver.

6 TAD Reference One Owner’s Manual