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Old 23rd February 2015, 07:10 AM   #1
lowerFE is offline lowerFE  Canada
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Default 2.1 amp board with high pass?

Can someone recommend a 2.1 board that has a high pass for the stereo channels? I really like the TPA3116 2.1 board, but apparently (and correct me if I'm wrong), it doesn't have a high pass filter for the stereo channels.

Thanks.
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Old 23rd February 2015, 08:01 AM   #2
irribeo is online now irribeo  Netherlands
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There always is a high pass filter on 3116 input, dc blocking caps and inputimpedance, like datasheet also mentions. If you reduce value of these 4 inputcaps you'll limit bass main channels are able to produce.
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Old 23rd February 2015, 03:20 PM   #3
lowerFE is offline lowerFE  Canada
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Quote:
Originally Posted by irribeo View Post
There always is a high pass filter on 3116 input, dc blocking caps and inputimpedance, like datasheet also mentions. If you reduce value of these 4 inputcaps you'll limit bass main channels are able to produce.
Could you explain further? If I high pass the input, then wouldn't there be no bass going into the amp at all?

Is there anything that I can read that'll teach me the various parts of an amplifier and what it does?

Thanks
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Old 23rd February 2015, 04:03 PM   #4
irribeo is online now irribeo  Netherlands
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http://www.ti.com/lit/ds/symlink/tpa3116d2.pdf

page 14 for high pass, eg I use an amp with 100nF inputcaps, you can calculate what -3dB point should be
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Old 23rd February 2015, 04:19 PM   #5
lowerFE is offline lowerFE  Canada
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Quote:
Originally Posted by irribeo View Post
http://www.ti.com/lit/ds/symlink/tpa3116d2.pdf

page 14 for high pass, eg I use an amp with 100nF inputcaps, you can calculate what -3dB point should be
I'm actually a newbie when it comes to amps. Where can I read about all this stuff and educate myself of all this?
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