AIYIMA A07 TPA3255 Review (Amplifier)

[antcollinet]

Can't reccomend any - I assume you had one in mind since you had a list of voltage/current options.

 

[oslosl]

Can't reccomend any - I assume you had one in mind since you had a list of voltage/current options.

I have to use a build-in enclosed power supply, so I was thinking about Meanwell LRS-150-36, but 36V, 4.5 A might be to small for the 15" woofer 250W, 98 dB ?

 

[RHO]

I have to use a build-in enclosed power supply, so I was thinking about Meanwell LRS-150-36, but 36V, 4.5 A might be to small for the 15" woofer 250W, 98 dB ?

I've got this one with mine: https://www.audiophonics.fr/en/powe...apter-100-240v-ac-vers-36v-6a-dc-p-12735.html

 

[oslosl]

I've got this one with mine: https://www.audiophonics.fr/en/powe...apter-100-240v-ac-vers-36v-6a-dc-p-12735.html

Ok. That is 36V, 200W. What is it running max load ? What about noise/ripple ?

 

[oslosl]

Since you can get the A07 for as low as $60, it feels stupid to spend more on the PSU (i.e 36V, 10A)

 

[wave]

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[Walter]

I have to use a build-in enclosed power supply, so I was thinking about Meanwell LRS-150-36, but 36V, 4.5 A might be to small for the 15" woofer 250W, 98 dB ?

The LRS-350-36 would seem to be a better choice.

 

[oslosl]

RD6006/RD6006-W LED Switching Power Supply S-400W-48V/DC12V/24V/36V/60V 8.3A-33.3A Support Monitoring Transformer Lighting

Only US$29.99. Get the RIDEN RD6006 or RD6006-W LED Switching Power Supply S-400W 48V/DC12V/24V/36V/60V 8.3A/33.3A with support for monitoring, transformer lighting, and more at Banggood.

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or

RD6006/RD6006-W LED Switching Power Supply S-400W-48V/DC12V/24V/36V/60V 8.3A-33.3A Support Monitoring Transformer Lighting

Only US$29.99. Get the RIDEN RD6006 or RD6006-W LED Switching Power Supply S-400W 48V/DC12V/24V/36V/60V 8.3A/33.3A with support for monitoring, transformer lighting, and more at Banggood.

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Any idea of noise and ripple ?

 

[oslosl]

The LRS-350-36 would seem to be a better choice.

But it is rather expensive.

 

[wave]

Any idea of noise and ripple ?

According to specs Less than 250mV peak to peak .

There are videos on YouTube where they tested those psus and verified the specs.

I installed an extra capacitor of low esr 1000uF 63V Japan brand Rubycon on the voltage rail near the amp DC input to lower the ripple even More

 

[PopBlast]

Hello! I would like to buy the Aiyima A07 to power my tower speakers (impedance: 8 ohms, RMS power: 120W, sensitivity: 91 dB). Will the the standard Aiyima power supply (32V 5A) be enough to play music loud (105dB at 1m) without clipping? Do I need to buy additional power supply (36V 6A or 48V 7.3A)? May be it's better to get another amplifier?

 

[restorer-john]

May be it's better to get another amplifier?

Yes. It's a little desktop toy amplifier. Not intended nor advised to be used to run a decent pair of floor standers at a high level for a long period. It just won't do it.

Get a real amplifier, say a 80-100wpc Yamaha (AS-501/AS-701) integrated that can run all day, stay cool and pump out the tunes without overheating and shutting off.

Here's what an AS-700/701 core amplifier section is built like:

 

[Roland68]

But it is rather expensive.

I advise you against buying such cheap switching power supplies.
Mean Well and other well-known manufacturers not only have stamps on their power supplies, but also the real protective circuits, laboratory tests and external tests with certificates.
Just have a look in the 3d printing forums how many users have grilled their devices with 3d printers and the electronics with defective cheap switching power supplies. By the way, they use the same series of power supplies (24 volts/300-500 watts)

How much have you saved if your amp (or more) goes up in smoke?

 

[oslosl]

Gave A07 some ventilation

 

[oslosl]

I advise you against buying such cheap switching power supplies.
Mean Well and other well-known manufacturers not only have stamps on their power supplies, but also the real protective circuits, laboratory tests and external tests with certificates.
Just have a look in the 3d printing forums how many users have grilled their devices with 3d printers and the electronics with defective cheap switching power supplies. By the way, they use the same series of power supplies (24 volts/300-500 watts)

How much have you saved if your amp (or more) goes up in smoke?

I decided for the Meanwell LRS-200-36. How can you check if it is a copy ?

 

[antcollinet]

I decided for the Meanwell LRS-200-36. How can you check if it is a copy ?

You probably can't. Best way to be safe is to buy it from a reputable dealer with a track record. They have something to loose by selling fakes.

 

[Deleted member 46664]

Why would you want to change the ratio? You need to send the same gain to both woofer and tweeter. The lower levels to the tweeter are naturally in the music.

True ... except that when you take the crossover out of the equation, you loose any LPad attenuation used on the tweeter and sometimes that can get just a little bit overwhelming.

 

[Deleted member 46664]

What 36V 10A would you recommend ?

To be honest, the difference between the supplied 32volt and a 36volt supply would be so small as to not make a difference.

 

[Deleted member 46664]

Hello! I would like to buy the Aiyima A07 to power my tower speakers (impedance: 8 ohms, RMS power: 120W, sensitivity: 91 dB). Will the the standard Aiyima power supply (32V 5A) be enough to play music loud (105dB at 1m) without clipping? Do I need to buy additional power supply (36V 6A or 48V 7.3A)? May be it's better to get another amplifier?

I have mine running a pair of SP-FS52 Pioneers and it gets loud enough that you can't stay in the room with it.

Why do you need 105db? Down that road lies hearing damage.

 

[abdo123]

Since you can get the A07 for as low as $60, it feels stupid to spend more on the PSU (i.e 36V, 10A)

Not at all. The PSU will be doing most of the work and it's definitely the biggest bottleneck in terms of safety and reliability.