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MF1

Multi-Field Magnetic Speakers

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.

Detachable tips allow 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. Tips are tapered for either direct application or for use with 1/8” O.D. PVC tubing. The mono speaker is provided with two 10 cm tubes and the stereo speaker set is provided with four 10
cm tubes.

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 a aluminum stand and the stereo speaker set includes a variety of aluminum mount/base fittings for easier positioning.

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.

Part numbers:
MF1-M Mono
MF1-S Dual (two speakers)

Technical Specifications:

Typical output:	Free Field 87 dB SPL at 10 cm Closed Field 100 dB SPL in 0.1 cc coupler
THD ( typical):	<= 1% from 1kHz to 50 kHz
Weight:	Free Field ~216g Closed Field ~277g
Dimensions:	Outside diameter:	6.6 cm
	Overall depth:	Free Field 3.6 cm w/Tube Tip 6.8 cm w/Ear Tip 7.1 cm
Impedance:	4 Ohms

free field response closed field response

Free Field measurements typical at 10 cm using +/- 1 V input.

Closed Field measurements typical closed field, approx 0.1cc pvc tube coupler using +/- 1V input.

See the Transducer Selection Guide for speaker comparison chart.