When a bridged-T network is inserted into the feedback path of a voltage follower, it can produce an inexpensive biquadratic filter whose transfer function has first-order coefficients as low as 2.5 (Q = 0.4), often approaching 2 (Q = 0.5), in the numerator when those in the denominator lie in the very useful range between 0.5 and 2. Among its applications, it is peculiarly suited to equalizing "over-damped" loudspeakers, i.e. with exceptionally low Qt`s, that are typical of robust, sensitive, drivers with large magnets. The wide range of applications is possible through selection of the more suitable of the two possible configurations of a bridged-T network, described in Figs 2 to 5 as CRRC or RCCR. The work is the subject of intellectual property claims.
(See document for exact affiliation information.)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
