what should i consider??
THD ,IM etc..
i know it has to be clean..
is it the unmeasurable or difficult to measure qualities that make it good.
im thinking of class a/b automatically..
it needs to handle 4ohm load<shiva>
but what are my options, probably low power ,about 50watts is fine..<105db/1watt basshorn at home with parents nearby sometimes>
this
link2
and
link3
i was thinking of this module too.
The LM1875 is a monolithic power amplifier IC which takes advantage of advanced techniques to achieve low distortion, even at high output levels. Other features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability and wide supply range. The device is internally compensated for gains of 10 and greater.
Specifications
Supply Voltage +/-30V max.
Supply Current 100mA max.
THD 20W/1KHz 0.015% typ.
Open Loop Gain 90dB typ.
Current Limit 4A typ.
Thermal Resistance
(junction to case) 2°C/W typ.
Junction Temperature 150°C max.
Thanks!🙂
THD ,IM etc..
i know it has to be clean..
is it the unmeasurable or difficult to measure qualities that make it good.
im thinking of class a/b automatically..
it needs to handle 4ohm load<shiva>
but what are my options, probably low power ,about 50watts is fine..<105db/1watt basshorn at home with parents nearby sometimes>
this
link2
and
link3
i was thinking of this module too.
The LM1875 is a monolithic power amplifier IC which takes advantage of advanced techniques to achieve low distortion, even at high output levels. Other features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability and wide supply range. The device is internally compensated for gains of 10 and greater.
Specifications
Supply Voltage +/-30V max.
Supply Current 100mA max.
THD 20W/1KHz 0.015% typ.
Open Loop Gain 90dB typ.
Current Limit 4A typ.
Thermal Resistance
(junction to case) 2°C/W typ.
Junction Temperature 150°C max.
Thanks!🙂
One thing that is worth noticing is hum and noise. Low noise and hum is requered because the level will be 15-25 dB higher than with a "normal" speaker due to the higher effeciency.mikee12345 said:
LOL i just read- ''monolithic power amplifier IC ''
not audio/ id have to read the pdf.
anyway i like the other kitset ones,such as the sc-480.
good point though,about mains humm etc
not audio/ id have to read the pdf.
anyway i like the other kitset ones,such as the sc-480.
good point though,about mains humm etc
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