Amplifier Modules and PCBs For Sale

[Deleted member 148505]

Looks like TPA3245 and TPA3255 are pin to pin compatible and same package HTSSOP 44 pin. So we can directly solder TPA3245 on TPA3255 board. On my next mouser order I will get TPA3245.

Regarding PFFB there are different resistor values needed if you want to use it on lower voltages.

For input opamp I tried to put OPA1656 and the resulting sound is darker and the highs are finer. I like the NE5532 better because it's livelier and has more solid state sound to it, it's like I'm listening to japanese vintage solid state amp. The difference between the two are minimal on my speakers.

 

[AlexScan]

Ok it's the same for TPA3250/51, possible to make board with little mod... interesting.

For the OPA i found 1656 a little "flat" too... LME49860 it's better, it's near 5532 but more "bodied" and musical.

You can found it on mouser or digikey but only in SOIC:

https://www.mouser.fr/ProductDetail...5fsyI/HqrU4dYhuHtVSPMjyAnP/2szptWoFUsvUuFgQ==

Blocked

 

[Deleted member 148505]

Ok it's the same for TPA3250/51, possible to make board with little mod... interesting.

For the OPA i found 1656 a little "flat" too... LME49860 it's better, it's near 5532 but more "bodied" and musical.

You can found it on mouser or digikey but only in SOIC:

https://www.mouser.fr/ProductDetail...5fsyI/HqrU4dYhuHtVSPMjyAnP/2szptWoFUsvUuFgQ==

Blocked

Nice you found it. It's the high voltage version of LME49720 (probably binned from the same wafer), apparently opamp rollers found it to be better sounding.

 

[Deleted member 148505]

Test fitting modules for my 2.1 amp.
I modified the abletec SMPS so that it will only output +/-48V DC
Signal detect power on and softstart on the right of SMPS.

 

[AlexScan]

Nice you found it. It's the high voltage version of LME49720 (probably binned from the same wafer), apparently opamp rollers found it to be better sounding.

I am the 49720 and its sound like LM4562 (exactly the same specs), the 49860 is better to my ear... and i'm not the only one we found same result as listening.

 

[Deleted member 148505]

And for better medium/treble performance it's possible to make esasily a TPA3245 board ? (according to PFFB datasheet the TPA3245 was better 6.67Khz THD)

For my semi-active speakers in construction the best combinaison for me it's TPA3255 PBTL for woofer and TPA3245 PBTL for medium/treble

Have you checked TPA3251? looks like it's better than TPA3245 @ 6 to 7kHz.

 

[AlexScan]

Yes... but I hesitate between the two... according to PFFB datasheet the 3245 seem to be better in the 6.67khz 1-50W range...

 

[Deleted member 148505]

Ok great news... you prefer the sounds of tpa3255 or IRS on y

I already tested stereo IRCore350M on my JBL speakers. It is actually warmer sounding than the TPA3255, I prefer the TPA3255 because it is more 'HD' sounding. My sister prefers the IRS2092, she said that the TPA3255 is 'heavier', I don't know what she meant by heavy .

 

[AlexScan]

I already tested stereo IRCore350M on my JBL speakers. It is actually warmer sounding than the TPA3255, I prefer the TPA3255 because it is more 'HD' sounding. My sister prefers the IRS2092, she said that the TPA3255 is 'heavier', I don't know what she meant by heavy .

OK thank for the return Lester

Be sure with better inductors/regulator/OPA/capacitors the TPA3255 can sound much warmer with keeping "HD" sound.

 

[bobo le chat]

tpa3255 PFFB

Hello
Project tpa3255 PFFB very interesting, I follow it very closely
Best regards
Roger

 

[Deleted member 148505]

Good news

I found a cheaper shipping option , they are affiliated with DHL eCommerce, shipping time is 1 to 2 months, currently updating the shipping fee on our website.

 

[Deleted member 148505]

Hello
Project tpa3255 PFFB very interesting, I follow it very closely
Best regards
Roger

Will probably offer the first batch as partially assembled (but fully tested module) since we don't have the parts yet. ETA second week of October.

 

[bobo le chat]

Fine
Roger

 

[Deleted member 148505]

Ok it's the same for TPA3250/51, possible to make board with little mod... interesting.

For the OPA i found 1656 a little "flat" too... LME49860 it's better, it's near 5532 but more "bodied" and musical.

You can found it on mouser or digikey but only in SOIC:

https://www.mouser.fr/ProductDetail...5fsyI/HqrU4dYhuHtVSPMjyAnP/2szptWoFUsvUuFgQ==

Blocked

I am the 49720 and its sound like LM4562 (exactly the same specs), the 49860 is better to my ear... and i'm not the only one we found same result as listening.

I already tried LME49720 DIP version on my V1.1 module and yes it is a real step up from NE5532, same liveliness but with better highs.

I bought some OPA1692IDR, I will try them next. I should have bought the LME49860 too, anyway I will buy them on my next order.

 

[bobo le chat]

Hello
Currently I use the lme49720, an aop that I also use on a first version ucd180 (delivered at the time with a NE, note that Hypex then switched to the lme).
I tried the 49860, which I still have in dip8, without noticing any difference.
This week I'm going to try the (obsolete) lme49990 for fun.
Best regards
Roger

 

[AlexScan]

I test my OPA with ES9038Q2M Sabre DIY DAC directly driving Hifi Earbud "Toneking Nine-Tails" (truely hi-end IEM for a "lower price")

I can determine any difference with this method, with traditionnal speaker it's not possible.

 

[Deleted member 148505]

First time to be disappointed with my Mouser order.

Inductors that were intended for my TPA3255 PFFB amp arrived with damages. All inductors were placed inside a bubble wrap bag which made them freely collide with each other.

Hope they can replace or refund them.

 

[AlexScan]

OMG Lester !

The shipper was playing american football with package ?

 

[Deleted member 148505]

OMG Lester !

The shipper was playing american football with package ?

haha looks like it

 

[thimios]

Here is the real problem.
"All inductors were placed inside a bubble wrap bag"
Bad very bad package for ferrite materials.