TI Class D EVM Board 50% Promotion

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a3cervo

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Joined 2012
Placed an order today for the 3255 EVM,free shipping worldwide offered again.

I've seen suitable Meanwell SMPS mentioned here a few times and strongly considering it but would like to know if a linear PSU will have a noticeable advantage taking into consideration the price/performance ratio.

Thanks!
 
wushuliu

wushuliu

Member
Joined 2008
a3cervo said:
Placed an order today for the 3255 EVM,free shipping worldwide offered again.

I've seen suitable Meanwell SMPS mentioned here a few times and strongly considering it but would like to know if a linear PSU will have a noticeable advantage taking into consideration the price/performance ratio.

Thanks!
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From previous experience a beefy linear supply may improve low end performance. But we are talking a heavy toroid and lots of capacitance. So in short, no. But This was with irs2092 amps. Haven't tried with TPA325x.
 
M

mboxler

Member
Joined 2011
wushuliu said:
Cool. 2ohms it is. The datasheet appeared to say 2.7 minimum so I wasn't sure.
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For my own education, does the recommended load depend solely on the output LC filter, and more specifically, the impedance of the speaker around 20khz? In other words, a speaker could measure 4 ohms around 2khz, but the impedance could rise to 8 ohms at 20khz. Would you want the LC filter designed for 8 ohms?

Thanks, Mike
 
B

Bearman

Member
Joined 2005
So... just hooked the amp to my MP3 player and my Ed Frias modified BIC DV62si bookshelves, and Meanwell that the Dr. Mod suggested, is the best classD amp I have ever heard. Can't wait to put it all in a case and hook em up to my main speakers and CD player :) Punchy bass and crisp clean highs.
 
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barryso

Member
Joined 2008
dubai2000 said:
Thanks a lot for this info - this encouraged me to order as it also said out of stock - so fingers crossed - and the discount was still working.
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I ordered one on the 6th. It was an odd process - it wouldn't give you the 1/2 price discount until you registered. Then after registering the screen said the amp was out of stock - until the order was completed.

There was an email last night that said it had shipped and is scheduled to be here early next week.

So it'll be about 2 weeks since placing the order and delivery which is far better than expected. They also didn't charge shipping.

The Meanwell power supply got here earlier this week and I'm really looking forward to hearing this amp.
 
bonjonno

bonjonno

Member
Joined 2005
I ordered the 3255evm in September when it was out of stock; got the 50% discount and a confirmation. A few days later I got an email from TI stating that delivery would be between Dec 27 and Jan 30; also the 50% off was gone and they listed a completely different unit that wasn't even an amplifier board. I contacted them and they said the 50% off was still part of the order. I decided to cancel the order and notified them. Their response was "do you want to cancel your order?" Yowza. So I notified them again and it was cancelled. When people started receiving their units and raving, I tried to order again but got a message that I could no longer use the 50% off coupon. TI store too flaky for comfort...
 
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