• These commercial threads are for private transactions. diyAudio.com provides these forums for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members, use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

TPA3251D2

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
wushuliu

wushuliu

Member
Joined 2008
tubo said:
This seems to be sold out. Are they still available?
Click to expand...

Maybe send the seller a PM.

Following up I do think this amp has lower noise and better low level detail than my wiener monos, but not as full in low frequencies. Seems to have a little better separation of instruments and depth. However, the monos have more bass output. Otherwise the 3251 has the same sonic attributes. The 3251 has more power though and since I may pursue more power hungry speaker builds in the future, I will probably keep it as my main Amp! :cool:

Great job, 3eaudio.
 
Last edited:
3

3eaudio

Member
Joined 2014

Attachments

  • Altium_3D_1.JPG
    Altium_3D_1.JPG
    158.8 KB · Views: 706
C

cacao ambiance

Member
Joined 2015
aross.me
pguerin said:
Wich one is best suited for 8 ohms speakers ?
Click to expand...

Depends on the power level you want. Look at the datasheets for the amplifier IC (chip). The word TPA32/50/55/51 is the name for the amplifier IC. Search "<Amplifier IC Model Name> Datasheet"

http://www.ti.com/lit/ds/symlink/tpa3250.pdf
http://www.ti.com/lit/ds/symlink/tpa3251.pdf
http://www.ti.com/lit/ds/symlink/tpa3255.pdf

heres the first page of one, which i have commented on to help you. note theres you will normally finds pages of graphs about useful info about the amplifier IC if you scroll down the datasheet. which i advise you to do. I always look for the THD v.s Watts @ powered at recommended input voltage.

tpa3255-THDExplained.png


https://www.pic-upload.de/view-33515158/tpa3255-THDExplained.png.html
direct link to image: https://www2.pic-upload.de/img/33515158/tpa3255-THDExplained.png
 
Last edited:
T

treuben

Member
Joined 2006
I have some questions about this thing..

1. Can it run without problems from a linear supply - bus pumping etc? Any tips as to precautions with linear supply?

2. Can the coils cope with low impedance (4ohm) load at high levels and is this suitable as a full range amp for something like, say, an inefficient Dynaudio 6 inch bookshelf speaker.

3. How is turn on/off thump etc?

4. What do you guys do about speaker protection?

I'm wondering if this is a nice alternative to an Icepower 125 or 250 type board.
 
Last edited:
S

SanjeevM

Member
Joined 2017
cacao ambiance said:
Depends on the power level you want. Look at the datasheets for the amplifier IC (chip). The word TPA32/50/55/51 is the name for the amplifier IC. Search "<Amplifier IC Model Name> Datasheet"

http://www.ti.com/lit/ds/symlink/tpa3250.pdf
http://www.ti.com/lit/ds/symlink/tpa3251.pdf
http://www.ti.com/lit/ds/symlink/tpa3255.pdf

heres the first page of one, which i have commented on to help you. note theres you will normally finds pages of graphs about useful info about the amplifier IC if you scroll down the datasheet. which i advise you to do. I always look for the THD v.s Watts @ powered at recommended input voltage.

tpa3255-THDExplained.png


https://www.pic-upload.de/view-33515158/tpa3255-THDExplained.png.html
direct link to image: https://www2.pic-upload.de/img/33515158/tpa3255-THDExplained.png
Click to expand...
The datasheet of 3251 does not talk about 8 ohm speakers, whereas the datasheet of 3255 does. Does it mean 3251 is not suited for 8 ohm speakers, or just that TI has not written about it?
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom