Texas Instruments PurePath TAS5766M, User Manual

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SLOU TI Information – Selective Disclosure
10 PurePath™ Smart Amp User Manual (TAS5766M/68M)
1.6.2 Miscellaneous Equipment
In order to perform a full characterization the following hardware is recommended. Some of
these items are not needed if loudspeaker parameters are known.
Table 2. Miscellaneous Equipment
Equipment Description
Weight Scale 20g in 1mg increments preferred. The Gemini-20 Portable Milligram Scale
by American Weigh is recommended. Not required if the force factor Bl is
provided by the speaker manufacturer.
Adhesive Putty Similar to Blu Tack or Removable Adhesive Putty by Scotch . Not required
if the force factor Bl is provided by the speaker manufacturer.
Metric Ruler Size depends on loudspeaker diaphragm area (S
d
). Also used to
measure port area (S
p
). Plastic is preferred to prevent the magnet from
pulling the ruler. Not required if S
d
and S
p
parameters are known.
24V Power Supply A lab power supply capable of providing peak power to the speakers. A
24V, 6A supply addresses most circumstances. An external AC/DC
supply could be used as well, such as the
MENB1100A2403F01 by SL
Power Electronics .
A microphone is required for Smart SPL and characterizing passive radiator systems. Below is a
list of microphones that have been tested for Smart Amp.
Table 3. Microphones Tested for Smart SPL and Passive Radiator Systems
Model Manufacturer Type
Mic: CME-1538-100LB CUI, Inc. Electret Condenser
(requires external 1.8V bias)
Capsule: 4938
Preamp: Type 2670 Brüel & Kjær ¼” Diameter Pressure Field
Mic: EMM-6
Dayton Audio ½” Diameter Condenser
(tested with Shure X2u USB Preamp)
Mic: iMM-6 Dayton Audio Condenser
(requires external 1.8V bias)