16-9
EC1/ES1 Electrostatic Speaker
EC1/ES1Electr ostaticSpeaker
Overview
TDT Electrostatic Speakers (Patent No. US 6,842,964 B1) are designed specifically
for ultrasonic signal production. The electrostatic design offers a thin, flexible
membrane with an extremely low moving mass. Unlike conventional speakers, these
speakers distribute the driving signal homogeneously over the surface of the
membrane. These factors produce a small, lightweight speaker with an excellent
ultrasonic response and very low distortion. Available with or without a coupler, both
models are easy to position and are particularly well suited for studies with small
animals that have hearing in the ultrasonic range.
Part Numbers (Patent No. US 6,842,964 B1):
ES1—Free Field Electrostatic Speaker
EC1—Electrostatic Speaker—Coupler Model
CableConnection
The ES1 and EC1 electrostatic speakers work exclusively with the ED1 Electrostatic
Speaker Driver. Input is via a 4-pin, mini-DIN connector, which carries both bias
and signal voltages from the speaker driver. Connection to the speaker driver is
through a standard 6.1 m long cable. Other cable lengths can be special ordered,
but will affect the speaker’s frequency response. The speakers come fully enclosed to
eliminate access to the high-voltage bias and driving signals. A 3.175 mm mounting
hole at the base of the speaker accepts a standard 4-40 standoff. See “ED1
Electrostatic Speaker Driver” on page 16-15, for information about gain settings.
The orientation of the cable connection is indicated with dots on the cable connector
and on the speaker. The cable should be connected so that the dot on the cable
faces towards the speaker.
To Next Page
