I want to reduce losses to a minimum, as it is off-grid system the losses will reduce the time I can play music. I will prefer to limit the max voltage of the battery (which at least increase battery life). I have seen some pictures of the board made by aiyima, it has a 80v capacitor. I guess this is to stabilise the input power so no problem if voltage is above 50v. But I see there are other 50v capacitors in the board. Will be safer to change those for 55v ones?
Not all amplifiers using TPA3255 can be used with a power supply voltage of 56V.
It is greatly restricted by the parts used.
The voltage that can be used with commercially available amplifiers such as AIYIMA A07 is limited to 48V.
Furthermore, due to insufficient heat measures, the voltage is limited to a lower voltage depending on the environment in which it is used.
It is greatly restricted by the parts used.
The voltage that can be used with commercially available amplifiers such as AIYIMA A07 is limited to 48V.
Furthermore, due to insufficient heat measures, the voltage is limited to a lower voltage depending on the environment in which it is used.
I was planning to use this board ,
httpss://es.aliexpress.com/item/4000042250042.html?spm=a219c.12010612.8148356.10.3cf47340bNi80O
It has 80v cap after powersource , other cap are 50v. Will you recommend other implementation for high voltage? I wil prefer to work with a 48v battery ( maybe limited to 50v max) than a lower voltage one. My plan is to used a 4 ohm 200 rms subwoofer and a tweeter around 60w. In mono or 2.1 with two tweeters and same subwoofer. Thanks
httpss://es.aliexpress.com/item/4000042250042.html?spm=a219c.12010612.8148356.10.3cf47340bNi80O
It has 80v cap after powersource , other cap are 50v. Will you recommend other implementation for high voltage? I wil prefer to work with a 48v battery ( maybe limited to 50v max) than a lower voltage one. My plan is to used a 4 ohm 200 rms subwoofer and a tweeter around 60w. In mono or 2.1 with two tweeters and same subwoofer. Thanks
Thank you again Toku-san. I just received the Aiyima amplifier, and it is as you said. The sound quality is as good or better than the A04. Mine has the noise when the device turns on as well.
Still available if anyone is interested - now reduced to £70 for a power supply and board + shipping. Total of 5 pairs available.
If they don't sell before this weekend then I'm going to strip components off them to donate to my other TPA3255 amps... which seems like a shame.
FS JLester TPA3255 48v passive post filter feedback amps and power supplies £99 each
If they don't sell before this weekend then I'm going to strip components off them to donate to my other TPA3255 amps... which seems like a shame.
FS JLester TPA3255 48v passive post filter feedback amps and power supplies £99 each
Hei guys just found this new amazing tpa3255 finished amp
US $193.00 50%OFF | Fever digital power amplifier TPA3255 ultra-clear HIFI digital power amplifier high power and small size
Fever digital power amplifier TPA3255 ultra clear HIFI digital power amplifier high power and small size|Home Automation Kits| - AliExpress
US $193.00 50%OFF | Fever digital power amplifier TPA3255 ultra-clear HIFI digital power amplifier high power and small size
Fever digital power amplifier TPA3255 ultra clear HIFI digital power amplifier high power and small size|Home Automation Kits| - AliExpress
I saw it and shared the link in another thread, you also have the TPA3251 version using differential OP amps but the amp is really bad made because the input is only a Jack connector @front panel ! makes no sense
It is too expansive ! At this price you can get a Jlester module
checkout :
Nouvel amplificateur de puissance numerique HIFI TPA3251, ultra clair, haute puissance et petite taille | AliExpress
It is too expansive ! At this price you can get a Jlester module
checkout :
Nouvel amplificateur de puissance numerique HIFI TPA3251, ultra clair, haute puissance et petite taille | AliExpress
3e-audio
I ordered a 3e-audio tpa3255, 2-channel from ali. From mouser I picked up a meanwell lrs-350-48. This was meant as an inexpensive way for me to upgrade from a Yamaha HTR-5920, at least I hoped it would be an upgrade. I'm a woodworker and experienced DIYer and my ultimate goal is to build a wood/aluminum chassis / case for the components and make a proper amp. Being an impatient person I needed to test out the amp asap after the components had arrived. I hacked it together enough to give it a listen. I upgraded/changed the opamps to 2 LME49720NA/NOPB. I connected the headphone out from my laptop to the tpa3255 and gave it a test run. It sounded great to my ears. It stayed this way for weeks as I haven't yet had the time to put together the amp as an actual complete unit yet. Over the weekend I reverted back to the Yamaha amp. Wow - the Yamaha doesn't sound bad but it is not as crisp and clear (sounds like a beer) as the tpa3255. The tpa3255 sounds more dynamic with better instrument distinction and clearness. I can't describe it well with words but I definitely prefer it to the Yamaha and I bet it will sound even better when I get it in a proper box
Just wanted to share for anyone who might be interested in a 3e-audio and wanted to hear another experience.
I ordered a 3e-audio tpa3255, 2-channel from ali. From mouser I picked up a meanwell lrs-350-48. This was meant as an inexpensive way for me to upgrade from a Yamaha HTR-5920, at least I hoped it would be an upgrade. I'm a woodworker and experienced DIYer and my ultimate goal is to build a wood/aluminum chassis / case for the components and make a proper amp. Being an impatient person I needed to test out the amp asap after the components had arrived. I hacked it together enough to give it a listen. I upgraded/changed the opamps to 2 LME49720NA/NOPB. I connected the headphone out from my laptop to the tpa3255 and gave it a test run. It sounded great to my ears. It stayed this way for weeks as I haven't yet had the time to put together the amp as an actual complete unit yet. Over the weekend I reverted back to the Yamaha amp. Wow - the Yamaha doesn't sound bad but it is not as crisp and clear (sounds like a beer) as the tpa3255. The tpa3255 sounds more dynamic with better instrument distinction and clearness. I can't describe it well with words but I definitely prefer it to the Yamaha and I bet it will sound even better when I get it in a proper box
Just wanted to share for anyone who might be interested in a 3e-audio and wanted to hear another experience.If not answered in the meantime. The distortion alters over supply voltage in total distortion and distribution. This behavour raises to high frequencies and starts at 1-2 kHz. Especially the 2. and 3. harmonics starts increasing.
I have tested it at 1, 4 and 10 W at 8 ohm load with comparable results. The best distortion figure (low 2. and 3.) is at 35 V.
Measured on a Aiyima A07. After modification to PFFB the distortion behaviour remains, but lowered in value.
Hi,
I own this one and tested it. It is OK, I got the 36V version and does the job.
But I prefer this one, it is really well protected and reliable.
You need to ask for a single rail version (ask the seller) :
Panneau de commutation PSU pour amplificateur de puissance 500W HIFI Audio, pour 24V/+ 36V/+ 48V/+ 60V/+ 70V/+ 80 carte d'alimentation V/+ 120V | AliExpress
I own this one and tested it. It is OK, I got the 36V version and does the job.
But I prefer this one, it is really well protected and reliable.
You need to ask for a single rail version (ask the seller) :
Panneau de commutation PSU pour amplificateur de puissance 500W HIFI Audio, pour 24V/+ 36V/+ 48V/+ 60V/+ 70V/+ 80 carte d'alimentation V/+ 120V | AliExpress
Can't find that one on taobao I'd rather not use aliexpress as shipping is both slower and requires me to use my credit card.
How is this one? Imgur: The magic of the Internet
I'd rather not use aliexpress as shipping is both slower and requires me to use my credit card.How is this one? Imgur: The magic of the Internet
Just started a layout, in order to practice with Kicad and shake off my Eagle habits. Bog standard stereo BTL, mostly inspired by the TI EVM. Just adding most of a linear PS onboard, as well as a proper instrumentation amp style input.
I'll post the kicad files once I'm done. That might take a while though
I'll post the kicad files once I'm done. That might take a while though
Attachments
Hi,
i have 3Way Dipole Speaker with 10-35WRMS (4 Ohm) per Way. Right now i use a Adau1701 DSP -> PCM5102 -> Multichannel AVR (as AMP)
I want to sell the AVR and buy some HanZao Boards. If i have understood right, i need 3 HanZao Boards. And what i have read so far for 4 Ohm speaker with less WRMS the TPA3251 is superior. Is this right? Than i would take this one....
Can i take the PSU you mentioned above for the TPA3251? If i have 3 Hanzao TPA3251 Boards, will one of the above PSU deliver enough energy for my speaker or do i need 2 or 3 PSU?
Best regards and thank you for the help!
Tomas