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mcdn's latest activity
M
mcdn
reacted to
MCH's post
in the thread
Audio Sense schematic needed
with
Like
.
Hi, I am considering building a power amplifier and want it to have audio sense. I have searched a while, but could not find any...
Mar 24, 2024
M
mcdn
replied to the thread
Heat pipe cooling in power amps
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I should have added some extra context. In practice an 8ch TPA3255 made of 4 2ch modules and an 800w SMPS idles at around 30W. With a...
Mar 16, 2024
M
mcdn
replied to the thread
Heat pipe cooling in power amps
.
Your bigger issue is going to be that you may need to design a custom board in order to meet your size constraint. Cooling it will be...
Mar 16, 2024
M
mcdn
reacted to
Randolf's post
in the thread
Corner Trap Nonsense
with
Like
.
Building and tuning a Helmholtz resonator is cheap, easy and was very effective in my use case (strong 45Hz room mode). You can get a...
Mar 7, 2024
M
mcdn
reacted to
Newman's post
in the thread
The Centre channel: what signal gets sent to it? How demanding compared to Left and Right?
with
Like
.
OK the summary of all the feedback I have read, IMHO, is that if you are totally focused on TV and movies, and want to save some money...
Mar 6, 2024
M
mcdn
replied to the thread
Center with good directivity for Revel M126Be?
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Never move the cat. They hold grudges and attempts to appease them with wet meat will be seen, rightly, as signs of weakness...
Mar 6, 2024
M
mcdn
replied to the thread
Center with good directivity for Revel M126Be?
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Do you really need a centre? Just asking!
Mar 6, 2024
M
mcdn
replied to the thread
DIY amp testing (with AES17 filter)
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The self-noise of a 10k divider is -115dBV (waves hands about how much of that leaks to the ADC, but presumably not all of it)...
Mar 6, 2024
M
mcdn
replied to the thread
DIY amp testing (with AES17 filter)
.
I will update the documentation to be clear about the potential issue so users aren't surprised when they measure DACs and get a bit of...
Mar 6, 2024
M
mcdn
reacted to
sarieri's post
in the thread
DIY amp testing (with AES17 filter)
with
Like
.
You are right. I did another measurement: D6s--Scalar L in--Scalar L out--AUX0025--Scalar R in--Scalar R out--ADCiso. And here is the FR...
Mar 6, 2024
M
mcdn
replied to the thread
DIY amp testing (with AES17 filter)
.
I figured out the rolloff issue. It's because of the output impedance of the D10 balanced (88 ohms). Which makes sense as the filter...
Mar 6, 2024
M
mcdn
replied to the thread
DIY amp testing (with AES17 filter)
.
Good news @sarieri! v2 seems to solve the HD3 issue, although the rolloff at 20kHz is still higher then expected at 0.5dB despite the...
Mar 6, 2024
M
mcdn
replied to the thread
DIY amp testing (with AES17 filter)
.
I'm getting -133dB H3 with D10 Balanced -> v2 filter -> ADCiso. The new board layout does seem to help, but I need more time to do a...
Mar 5, 2024
M
mcdn
replied to the thread
Question about driver range overlap.
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That is true, although I don’t think it’s really a reason for making the design choice, more a nice side benefit!
Mar 3, 2024
M
mcdn
replied to the thread
Question about driver range overlap.
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There are two reasons to use a midrange driver. One is to enable higher power handling, as tweeters often struggle to be efficient when...
Mar 3, 2024
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