Mulit-channel Amp,Which one you would like to own?

[3eaudio]

Hi Amigoes

We are preparing to build a multi-channel amp. Wanna know which model is more popular for users? If you are interested, please help us get your vote.

• Leverage A5(TPA3251),A7(TPA3255) PFFB design with built-in GaN Power supply
• Pure-Amplifier without volume control, configurable multi-channel as 2/3/4/6/7/8 into 2 enclosures.
• Support both 12V Trigger IN and Auto On/Off (User selectable)

 

[3eaudio]

@Guddu @anonyless @jkatchy2 @harkpabst FYI~

 

[MCH]

A cheap one

 

[Sokel]

Just a detail not shown at the rendering, a high-count channel, high power amp would probably need either two IEC C14 or a single IEC C20 one.

 

[voodooless]

amp would probably need either two IEC C14 or a single IEC C20 one.

Or a 230V country

 

[Sokel]

Or a 230V country

Even here for higher count.
8 channels x 450W/2 Ohm/1% THD+N = 3600W ( I guess fans will be used, thermals are enormous for TPA3255 at 2 Ohm)

I doubt it will ever be needed but is the principle.

 

[Joe0429]

PAM155 or PAM255 for basic 5.1 home theater.

 

[anonyless]

Hi Amigoes

We are preparing to build a multi-channel amp. Wanna know which model is more popular for users? If you are interested, please help us get your vote.

• Leverage A5(TPA3251),A7(TPA3255) PFFB design with built-in GaN Power supply
• Pure-Amplifier without volume control, configurable multi-channel as 2/3/4/6/7/8 into 2 enclosures.
• Support both 12V Trigger IN and Auto On/Off (User selectable)

View attachment 496092

are the new design amps based on two (or more) TPA chips like the A5/A7 ?

 

[voodooless]

Even here for higher count.
8 channels x 450W/2 Ohm/1% THD+N = 3600W ( I guess fans will be used, thermals are enormous for TPA3255 at 2 Ohm)

I doubt it will ever be needed but is the principle.

For 3600W you need a special IEC connector with a little notch. It also comes with a beefier cable. You see these usually in table grills and similar products.

 

[Sokel]

For 3600W you need a special IEC connector with a little notch. It also comes with a beefier cable. You see these usually in table grills and similar products.

Trinnov uses a single C20 for the 8-channel, about 500W/4 Ohm one, just enough probably, it does not specify 2 Ohm for the Hypex it contains though.
They probably think "music", as usual:

 

[anonyless]

@3eaudio cost estimate and availability on the PAM152 ?
also, is it going to have one TPA3251 per channel like the A5?

 

[Guddu]

Hi Amigoes

We are preparing to build a multi-channel amp. Wanna know which model is more popular for users? If you are interested, please help us get your vote.

• Leverage A5(TPA3251),A7(TPA3255) PFFB design with built-in GaN Power supply
• Pure-Amplifier without volume control, configurable multi-channel as 2/3/4/6/7/8 into 2 enclosures.
• Support both 12V Trigger IN and Auto On/Off (User selectable)

View attachment 496092
View attachment 496095
View attachment 496096

@3eaudio
This is already Excellent news..... Congratulations and best wished for this new product.
I won't even guess than 9 out of 10 would use it with AVR/processor pre-out for home theatre, and probably most important factor here would be higher power even if noise/distortion is a bit higher.
It looks like PAM25x are TPA3255 based while PAM15x are TPA3251 based - is it correct?

My best opinion says TPA3255 would be better choice for HT use out of both.

 

[jlx]

PAM155 or PAM255 for basic 5.1 home theater.

This ^^^^^^^
why no PAM255 option?

 

[Chrispy]

Could be interesting if you had actual specs for all your proposed models with at least prototypes let alone production models....

 

[Chaos01]

Build a multichannel Amp that has Power Like the A7 mono for a L/R Stereo pair, and maybe Same for the Center, and for 2 or 4 sourround Speakers Power Like the A5. So 5 or 7 channels Minimum or optional in different Versions.

But now @WiiM Team need to build a Wiim Ultra for 5.1 or better 7.2 Surround System with Dolby, so a AVR preamp Streamer with room correction to a fair wiim price. Not existing on the Market yet or?

 

[harkpabst]

The forum software did a remarkably bad job at (not) notifying me about being tagged, but I finally found this thread.

also, is it going to have one TPA3251 per channel like the A5?

All PMA15x and PMA25x amps do support loads down to 2 Ω and the power almost doubles from 8 Ω to 4 Ω. This is only possible with dual TPA325x chips. (Edit: for each two channels.)

I think the thumb up you received from @3eaudio confirms this.

 

[anonyless]

The forum software did a remarkably bad job at (not) notifying me about being tagged, but I finally found this thread.


All PMA15x and PMA25x amps do support loads down to 2 Ω and the power almost doubles from 8 Ω to 4 Ω. This is only possible with dual TPA325x chips.

I think the thumb up.you received from @3eaudio confirms this.

honestly the thumbs up only confused me. is that a yes? no? "thanks for your question" ? much easier to reply "yes".

 

[Markie Warkie]

This is Amazing ! i was looking at getting a few A7s for multichannel but did not want the complexity and wished for a multi channel version so this is Pefect !

 

[Maciekw]

Considering that some people have a good stereo amplifier, a 5-channel option would be nice and welcome. It's a pity you didn't think of that.

 

[harkpabst]

honestly the thumbs up only confused me. is that a yes? no? "thanks for your question" ? much easier to reply "yes".

You're probably right, but the fact sheet is clear (if you know the specs of the TPA chips).

Since we are dealing with Multi-Channel amps I should have been a little more precise:
Support for and full power down to 2 ohms requires one TPA325x chip per channel.
=>
PAMx52: 2 TPA chips
PAMx53: 3 TPA chips
PAMx54: 4 TPA chips
PAMx56: 6 TPA chips
... and so on.