Millstonemike
Seasoned Veteran
Last Activity: Today, 12:05 AM
Joined: 11-25-2012
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The cheap TPA3116 2.1 amps ... there is a 1st order HP on all the amp's L-R channels (though usually very low). It is inherent in a module's simple design...
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The forum s/w doesn't recognize user activity when you're posting (s/w bug). So, when you log in, check the box that says "keep me logged in"....Leave a comment:
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What is the enclosure design for the sub (box volume, port, etc.). An analysis of the enclosure design can determine if the woofer is exceeding it's xmax...Leave a comment:
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Absolutely. And mfg's make in-line attenuators to facilitate connections between closely located equipment....Leave a comment:
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The issue with an integrated BT receiver/amp module is that the speaker output will be split as a L channel signal and a R-channel signal. Use only one,...Leave a comment:
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Optical signals transmit reliably when the driver's signal at the receiver is within the receiver's sensitivity range. Too strong and the receiver is...Leave a comment:
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My neighbor has more vintage tube radios, tuners, amps, record players, speakers than any of us could possibly fit in an empty garage. Some have quite...Last edited by Millstonemike; 02-16-2019, 02:26 PM.Leave a comment:
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The mono amp's chip (TI's TPA3116) is a dual channel chip with a built in option to run both channels in parallel. In that configuration (i.e. on this...Leave a comment:
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With the Fluke, you did the right thing by using it's capacitance measurement, so the cap seems good. In an 2nd order high pass XO, Chris is saying that...Leave a comment:
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You can perform a rudimentary test on the cap with a simple DVM. Out of circuit: short the cap to dissipate any residual charge. Start with the highest...Leave a comment:
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That is what it appears to be. After combing the L-R signals into a mono sub signal, the on-board op-amp likely implements the LP pass filter and adds...Leave a comment:
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IMO, you're going about this all wrong. Use the ".1" sub channel on cheap TPA3116 2.1 amp module (and 24V PS) and feed it the same signal as...
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I measured (and modded) the Dayton amp in this thread. Bass at 20 hz is only down about 1.5 db and is flat at 30 hz. The new version on PE's website...Leave a comment:
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I use angle iron (from an old bed frame), C-clamps and a generic circular saw. Works great. The better you set up the cut, the more accurate it will...Leave a comment:
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+1 on the Peerless. It won't go below 50 Hz but it will put out some decent bass in 6 L with a 7.5" 1.5" PVC port. I love it's big brother,...Leave a comment:
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So you need a bridge rectifier and some PS capacitors to smooth the AC into a decent DC feed. Also note that X Volts AC translates to 1.4X Volts DC (since...
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With a make and model #, we might be able to come up with a schematic for the XO.Leave a comment:
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When I re-finished an ancient basement for my home office, I put a surround around a supporting column with power: Eight (8) outlets to support the PC...Leave a comment:
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I didn't see the link to the supply. With the transformer, it may very well be isolated. But I stand by my original statement for "bricks"...Leave a comment:
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I'd be careful using switching power supplies in series (bricks, wall warts, etc.). They're not isolated from the AC mains. Putting their outputs in...Leave a comment:
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