TPA3255, TPA3251, PSU for this amps

[turion64]

I am enjoying this! Clean, non-colored, non-fatiguing, dynamic, upper frequencies float in air. I don’t even want to try rolling any different op-amps. The 5532s are doing a marvelous job. I’m tempted to mount it sideways so heat rises away from the PCB and the aluminum plate/heatsink. A Class D to satisfy!

Thanks drMordor!

 

[MikeHartshorne]

FDA for Class D input

This looks very interesting, I may purchase one myself to hear the difference between my new Emotiva (which sounds great, but max. power is not as high) and a nice class D.

BTW, as a systems engineer at Texas Instruments, I must mention that we have a great new FDA that works very well for class D input driving called OPA1637.

https://www.ti.com/lit/ds/symlink/opa1637.pdf

If you are looking to create a fully-dif. input stage for the next gen., this is the best way to go!

Mike

 

[drMordor]

Thank you, Pete)))
Hi Mike!
I have FDA OPA1632 and THS4131. I maybe use this in new versions amp.

I may purchase one myself

No problem)))

 

[drMordor]

This is really?
IMHO very high THD+N above 5kHz

 

[drMordor]

Sorry))) 3V RMS)))

 

[stretchneck]

What is the gain on these amps - I need 26dB to match my other Hypex amps.

 

[drMordor]

~ 25,5db

 

[MikeHartshorne]

This is really?
IMHO very high THD+N above 5kHz

Yes, THDN is very good over frequency, especially for the current consumption. Of course any FDA architecture inherently helps in the reduction of even order harmonics, and the wide voltage capability (+/- 15 V) also helps, but even compared to other FDA's in its class this amp. performs very well.

So you have 1632 or 4131 on this current design?

I'd like to try one! I'll contact you directly.

 

[drMordor]

So you have 1632 or 4131 on this current design?

No, in this design i use standard OpAmp.
I have announced a new project:
My new project: GaN amp and LLC+SinchroRec PSU
In amp - LMG1210 gate drivers, FDA THS4130 and EPC2215 GaN transistors
In PSU- UCC25600.

 

[sphykik]

Hi drMordor, do you have any white 120v capable amplifiers left for sale?

Thank you

 

[Zedamoca]

If you can send me pictures of the amplifier later i aprecciate. Thank you

 

[drMordor]

See

 

[Zedamoca]

Do you sell it like this or put im in a case with the connectors?
Like ready to use?

 

[drMordor]

Assembled and tested PCB, if need connectors, say me.

 

[Zedamoca]

Just wanted something that i just need to connect the speakers plug in and Turn on 🙂

 

[Zedamoca]

Sorry to be Boring you with all of this.

 

[drMordor]

just need to connect the speakers plug in and Turn on

Yes))))

 

[Zedamoca]

And the worst part... How much will it cost?
Cause i have to count with the customs in my country.

 

[drMordor]

$140+shipping ~$20-25

 

[turion64]

And the worst part... How much will it cost?
Cause i have to count with the customs in my country.

You will really like this amp!



Pete