TPA3116D2 Amp

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#1,921
i read a couple of times small hybrid(polymer) caps could be used for powersupply decoupling because these have high ripple. panasonic datasheet has ripple factor for frequencies, and low frequency ripple for these hybrids is worse than for normal non hybrid lytics. Only above 10Khz ripple of these hybrids becomes much higher. But isn't high frequency decoupling handled by the smaller capacitors??
 
#1,926
BuildMeSomething said:
Have two of the YJ 2.0 Blue Boards ordered, just waiting on their arrival in the UK... at £30 shipped they're a bit of a steal!

Anyone know what the Blue Boards gain is normally set to, please? Found a couple of 24V 6A laptop bricks, so could just about get away with 26 gain with a 2Vrms source.
Click to expand...

Good deal! 🙂
I think they are 26dB gain by default. The 24v laptop supplies with that kind of amps is rare - must be a big workstation or gaming laptop? I have heard ideal voltage is 21 v for best low distortion performance but 24 v should work well still.
 
#1,927
I admit I haven't looked through this entire thread, but has anyone tried these amps with a regulated power supply? I plan to use a 20V transformer, which unloaded may produce DC voltage uncomfortably close to the absolute max of 30V. I would probably regulate to around 22V, allowing for loading and low AC line conditions.
 
#1,928
paulb said:
I admit I haven't looked through this entire thread, but has anyone tried these amps with a regulated power supply? I plan to use a 20V transformer, which unloaded may produce DC voltage uncomfortably close to the absolute max of 30V. I would probably regulate to around 22V, allowing for loading and low AC line conditions.
Click to expand...

I posted about the use of my new-to-me Astron RS-12A regulated linear power supply which is rated for 13.8V DC and 9A continuous:

http://www.diyaudio.com/forums/class-d/237086-tpa3116d2-amp-190.html#post3834338

For my system, this voltage is more than adequate. My SMPS is now sitting in storage.😎
 
#1,929
paulb said:
I admit I haven't looked through this entire thread, but has anyone tried these amps with a regulated power supply? I plan to use a 20V transformer, which unloaded may produce DC voltage uncomfortably close to the absolute max of 30V. I would probably regulate to around 22V, allowing for loading and low AC line conditions.
Click to expand...

Just FYI, it's been mentioned several times in this thread already that the chip has overvoltage protection and will shut down at 27V. And sound quality starts to deteriorate at more than 21V.
 
#1,933
xrk971 said:
Good deal! 🙂
I think they are 26dB gain by default. The 24v laptop supplies with that kind of amps is rare - must be a big workstation or gaming laptop? I have heard ideal voltage is 21 v for best low distortion performance but 24 v should work well still.
Click to expand...


My bad, the laptop bricks I'm looking at are adjustable 12-20V @ 6 Amps, 24V @ 5 Amps... still not bad. Will give 20V ago first off...

Once the amps arrive, might drop them to 20dB gain, which should be more than enough for my needs 🙂
 
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#1,934
I was at a friend's house today, listening to the so-called Blue Board version. The sound was mighty fine - I actually liked it more at around 26V - BUT: the chip got extremely hot - you couldn't even touch it - now, he usually runs it at 15V and even then the chip and coils get hot so that it's almost impossible to touch them for more than a second.
Have others made similar experiences? Enquiring mind would like to know.

Cheers
 
#1,935
dubai2000 said:
I was at a friend's house today, listening to the so-called Blue Board version. The sound was mighty fine - I actually liked it more at around 26V - BUT: the chip got extremely hot - you couldn't even touch it - now, he usually runs it at 15V and even then the chip and coils get hot so that it's almost impossible to touch them for more than a second.
Have others made similar experiences? Enquiring mind would like to know.

Cheers
Click to expand...

I've been running mine at 13.8V DC, and nothing gets warm. What kind of speakers, their sensitivity and nominal impedance?

Also, what kind of power supply?
 
#1,936
dubai2000 said:
I was at a friend's house today, listening to the so-called Blue Board version. The sound was mighty fine - I actually liked it more at around 26V - BUT: the chip got extremely hot - you couldn't even touch it - now, he usually runs it at 15V and even then the chip and coils get hot so that it's almost impossible to touch them for more than a second.
Have others made similar experiences? Enquiring mind would like to know.

Cheers
Click to expand...

What are you driving with it?
Mine runs quite cool using 21-24V driving Genesis G7P speakers.
Chip and inductors never exceeding 100F.
 
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