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Group buy: TPA3251_TPA3255 Amplifier board and ADAU1701 DSP Pre-Amp board
Group buy: TPA3251_TPA3255 Amplifier board and ADAU1701 DSP Pre-Amp board
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Old 22nd March 2019, 08:44 AM   #251
Yatsushiro is offline Yatsushiro  France
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Join Date: Mar 2016
Location: Normandie, France
Quote:
Originally Posted by bushellj View Post
Can you give us a link to the ebay listings as I cant see any 3eaudio products currently on ebay ???

Is there any plans for another group buy ??
Here you go:

https://www.ebay.com/sch/3e-audio/m....p2047675.l2562
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Old 22nd March 2019, 10:42 AM   #252
bushellj is offline bushellj
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Join Date: Mar 2013
Quote:
Originally Posted by Yatsushiro View Post

It would be excellent news if DIY Audio were to arrange another Group Buy as there seems to be lots of people on this thread who like myself missed the Group Buy earlier this year.

For the DSP Pre-Amp I would like the one with the remotely connected controls as this makes it easier to fit in a variety of cases and has RCA connectors !!
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Old Yesterday, 02:00 AM   #253
Sedim is offline Sedim  United States
diyAudio Member
 
Join Date: Mar 2019
Default Connecting the TPA3251 2x140W to one speaker?

Hi all,
Q1: Can I configure the TPA3251 2x140W 2Ch Class D Audio Amplifier (EAUMT-0140-2-A) to one speaker and use two of them to drive each of my speakers?

Q2: Can I configure the TPA3251 2x140W 2Ch Class D Audio Amplifier (EAUMT-0140-2-A) to drive drive one speaker that has two sets of inputs, one for the Tweeter and one for the Mid/Bass?
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Old Yesterday, 03:47 AM   #254
ricyuyc is offline ricyuyc  Hong Kong
diyAudio Member
 
Join Date: Dec 2006
Quote:
Originally Posted by Sedim View Post
Hi all,
Q1: Can I configure the TPA3251 2x140W 2Ch Class D Audio Amplifier (EAUMT-0140-2-A) to one speaker and use two of them to drive each of my speakers?

Q2: Can I configure the TPA3251 2x140W 2Ch Class D Audio Amplifier (EAUMT-0140-2-A) to drive drive one speaker that has two sets of inputs, one for the Tweeter and one for the Mid/Bass?
Q1. Different with TI TPA3251EVM which allow mode selection from Single end 4ch/BTL 2 ch/PBTL 1 ch, 3e has optimized their EAUMT-0140-2-A circuitry in 2ch only, would be difficult to tweak the board into PBTL. TPA3255 1ch board x2 shall be suitable for your need or jump to TI EVM board if you willing to pay for more.

Q2. Yes, it works fine in bi-wire connection. Could also consider the 3255 2ch board if speakers are in 4 ohms imp or the sensitivity is low.
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Old Yesterday, 10:44 AM   #255
manudrz is offline manudrz  France
diyAudio Member
 
Join Date: Feb 2012
Location: Fougères
PM sent for restrictions on ebay.com (USA). I can see the items but can't buy it...
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Old Yesterday, 10:54 AM   #256
manudrz is offline manudrz  France
diyAudio Member
 
Join Date: Feb 2012
Location: Fougères
OK so I just managed to buy my amp. It is necessary to change your country / language in US in your firefox/chrome then to connect normally.
Otherwise you will be blocked to a window asking you shipment address and your phone number.
I took the 3251 2.1.
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Old Yesterday, 08:32 PM   #257
silverD is online now silverD  United States
diyAudio Member
 
Join Date: Dec 2003
Location: MN
I assembled my amp and power supply into this case. The boards are next to one another and I'm getting a whine from the large transformer in the power supply as well as left channel of the amp (the channel closer to the transformer). Any suggestions on how to resolve this?
Thanks,
Nate
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Old Today, 02:44 AM   #258
Audio Mo is offline Audio Mo
diyAudio Member
 
Join Date: Jan 2019
The eBay link does not work for me either what do I need to do
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