16-3
MF1 Multi-Field Magnetic Speakers
MF1
Multi
‐
Field
Magnetic
Speakers
Overview
TDT Multi-Field Magnetic Speakers offer high output and fidelity over a wide
bandwidth and deliver more power at lower frequencies than our electrostatic
speakers. They are well-suited for laboratory species with lower frequency hearing
and for noise exposure studies.
A detachable tip allows them to be configured for either free- or closed- field use.
The closed-field configuration incorporates an internal parabolic cone designed to
maximize output and minimize distortion. The tip is tapered for use with 1/8” O.D.
PVC tubing. The mono speaker is provided with two 10 cm tubes and the dual
speaker set is provided with four 10 cm tubes.
Note:
An Ear Tip for direct application (no tubing required), is also available.
Speakers feature a rugged aluminum housing and a built-in, 8-32 threaded hole for
use with standard laboratory mounting hardware. The mono speaker includes an
aluminum stand and the dual speaker set includes a variety of aluminum mount/base
fittings for easier positioning.
Each MF1 kit (serial number > 1200) also includes a USB drive containing several
speaker-specific closed field and free field calibration curves (TCF files) made
during final testing at TDT. These files were designed to be used with the BioSigRZ
software. When using the MF1 speakers above 30kHz in free field mode, TDT
recommends using the speaker-specific TCF files in place of the generic speaker
curves provided in the BioSigRZ installation (stored, by default, at
C:\TDT\BioSigRZ\TCF).
The speakers can be driven directly from the RZ6 or using either TDT’s SA1 or SA8
stereo amplifiers. The speaker input carries both bias and signal voltages from the
stereo amplifier.
