Did you do math?
1mH at 18KHz is 113 Ohms. Add 1 Ohm resistances, call it 114 Ohms.
250mA is 0.250 Amps. 0.250A times 114 Ohms is 28 Volts.
Is "250mA" RMS? Peak?
Either way, a single amplifier channel on +/-15V will not meet spec. A bridge-tied pair of amp channels will come very close.
Most audio amps "work" past 18KHz, though they may not be at their best for distortion or efficiency.
1mH at 18KHz is 113 Ohms. Add 1 Ohm resistances, call it 114 Ohms.
250mA is 0.250 Amps. 0.250A times 114 Ohms is 28 Volts.
Is "250mA" RMS? Peak?
Either way, a single amplifier channel on +/-15V will not meet spec. A bridge-tied pair of amp channels will come very close.
Most audio amps "work" past 18KHz, though they may not be at their best for distortion or efficiency.
THS3121 will do 400ma but it's MSSOP and needs its belly heat-sinked (THS3120 and THS3121 can be operated in parallel for higher current).
LT1210 will do an amp and it's TO220. Read the datasheets carefully these are current feedback amplifiers with specific recommendations for the feedback and gain-setting resistors.
LT1210 will do an amp and it's TO220. Read the datasheets carefully these are current feedback amplifiers with specific recommendations for the feedback and gain-setting resistors.
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