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Class D Switching Power Amplifiers and Power D/A conversion

2x100W TPA3116D2 (2 chips, each in PBTL)
2x100W TPA3116D2 (2 chips, each in PBTL)
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Old 5th July 2015, 05:07 PM   #11
tonyfg is offline tonyfg  Portugal
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Quote:
Originally Posted by lithoc View Post
For 8ohm speakers , you can hardly gain any extra power.
True, I didn't really think about the implications of paralleled amplifiers on load before buying. Might consider doing an active sub using a couple of 2R drivers after all
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Old 6th July 2015, 01:19 PM   #12
doctormord is offline doctormord  Germany
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I was right, they made a mistake with the description. I will get a refund on this.
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Old 6th July 2015, 05:40 PM   #13
tonyfg is offline tonyfg  Portugal
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That's a shame, the price really looked too good to be true...

Well, let's wait for the boards from ebay to arrive. I hope those are the real deal and that they didn't take too many shortcuts on designing the PCB
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Old 7th July 2015, 12:16 AM   #14
paugie is offline paugie  Philippines
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I have the 2x100W amp. They sound decent enough and quire reliable. They don't have the turn on/turn off pop.
For USD11, they are good value. Not as clean as the Gmarsh Wiener of course but good enough for a portable battery powered setup if that's what you want to use it for.
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Old 7th July 2015, 06:23 AM   #15
Audioje is offline Audioje
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I assume that you can't run this amp in 1*200 mode because it's already two PBLT's?
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Old 7th July 2015, 08:33 PM   #16
doctormord is offline doctormord  Germany
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Why would you do so, do you have 1ohm loads?

But to answer your question, no.
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Old 7th July 2015, 09:53 PM   #17
irribeo is offline irribeo  Netherlands
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Originally Posted by paugie View Post
They don't have the turn on/turn off pop.
.
Very low value inputcapacitors? How is bass extension? Gain is set very high I believe I read ? Are the chips properly synched?
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Old 12th July 2015, 11:51 AM   #18
saabaab is offline saabaab  United States
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Default 2x100watts tpa3116d2

I have bought several. The sound is textbook tpa3116, though not as bass heavy as the blue/black boards.
The screw terminals are junk. I remove them and hard wire the connections.
The 3.5mm audio jack is delicate and will not withstand regular use.
The heatsinks are attached by dabs of foam. I just pull the heatsinks off, remove the goo, and use epoxy to securely attach them. They are adequate for loads down to four ohms. For two ohm loads, I augment them with additional heatsinks.
In short, I bought a couple and was so pleased I bought a bunch more.
The extra power is noticeable, and with a few mods, they are my new favorite amp. They make the ammoblasters boom!
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Old 13th July 2015, 09:01 PM   #19
tonyfg is offline tonyfg  Portugal
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Good to know these sound ok. I have a couple of extra through-hole 3.5mm female jacks lying around so I can probably swap it if it breaks.

Pretty cool ammoblaster btw!
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Old 13th July 2015, 10:07 PM   #20
Hypertext is offline Hypertext
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Quote:
Originally Posted by saabaab View Post
I have bought several. The sound is textbook tpa3116, though not as bass heavy as the blue/black boards.
The screw terminals are junk. I remove them and hard wire the connections.
The 3.5mm audio jack is delicate and will not withstand regular use.
The heatsinks are attached by dabs of foam. I just pull the heatsinks off, remove the goo, and use epoxy to securely attach them. They are adequate for loads down to four ohms. For two ohm loads, I augment them with additional heatsinks.
In short, I bought a couple and was so pleased I bought a bunch more.
The extra power is noticeable, and with a few mods, they are my new favorite amp. They make the ammoblasters boom!
are the large caps on the board any good? If you replace them, what do you use?
Thank you.
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