I'm looking at affordable option to replace the OEM Plate amp in my JBL E250P which is rated at 250W 4 ohms. This is part of my home-theater setup and the sub amp is actually driven by the signal level output from my Denon AVR.
A replacement plate amp (such as a Dayton Audio) is both expensive and physically prohibitive as involves much more rework of the cabinet to accommodate.
In mini amps, what I'm currently considering might be:
Aiyima A3001 - https://www.amazon.com/dp/B08LZFBLDM or
Nobsound G2PRO - https://www.amazon.com/Nobsound-Hi-Fi-Subwoofer-Channel-Amplifier/dp/B07TTMN51V
These look to be pretty much identical inside and utilize the TI 3255 - one difference being the power adapter is 6A for the Aiyima vs 5A for the Nobsound
I'm also wondering whether upgrading to a 48V 5A power adapter is worth the investment for either of these and give a meaningful boost in power?
The benefit of those is they are certainly easy to integrate, just hook up to the speaker.
Then there's this option to go with a Sure/Wondom board:
e.g. https://www.amazon.com/400Watt-Class-Audio-Amplifier-Board/dp/B07HHNWQSK?ref_=ast_sto_dp
Then get an appropriate power supply to drive it - lots of inexpensive options on Amazon.
I'm not sure that the mini amps are enough to drive that sub although I've seen reviews of others doing similar as plate amp replacements. For sure the power number they quote are wildly optimistic though, per dyno tests of similar on YouTube
I don't have any point of reference for the Board type solution but even if those specs are exaggerated, then would still be ahead of the minis. (they have 5 & 600 W boards too, but thinking this one would be adequate) Integration is not really much of an issue, I would just fit the board and PSU in the sub enclosure. And you can even get a volume control for under $10 for those boards. A low pass filter would not be necessary as handled by the main amp.
Board, power supply and volume control would collectively be about $85, very similar to the mini-amps, which would however be a little more if adding a 48V adapter.
So what are your thoughts/opinions?
A replacement plate amp (such as a Dayton Audio) is both expensive and physically prohibitive as involves much more rework of the cabinet to accommodate.
In mini amps, what I'm currently considering might be:
Aiyima A3001 - https://www.amazon.com/dp/B08LZFBLDM or
Nobsound G2PRO - https://www.amazon.com/Nobsound-Hi-Fi-Subwoofer-Channel-Amplifier/dp/B07TTMN51V
These look to be pretty much identical inside and utilize the TI 3255 - one difference being the power adapter is 6A for the Aiyima vs 5A for the Nobsound
I'm also wondering whether upgrading to a 48V 5A power adapter is worth the investment for either of these and give a meaningful boost in power?
The benefit of those is they are certainly easy to integrate, just hook up to the speaker.
Then there's this option to go with a Sure/Wondom board:
e.g. https://www.amazon.com/400Watt-Class-Audio-Amplifier-Board/dp/B07HHNWQSK?ref_=ast_sto_dp
Then get an appropriate power supply to drive it - lots of inexpensive options on Amazon.
I'm not sure that the mini amps are enough to drive that sub although I've seen reviews of others doing similar as plate amp replacements. For sure the power number they quote are wildly optimistic though, per dyno tests of similar on YouTube
I don't have any point of reference for the Board type solution but even if those specs are exaggerated, then would still be ahead of the minis. (they have 5 & 600 W boards too, but thinking this one would be adequate) Integration is not really much of an issue, I would just fit the board and PSU in the sub enclosure. And you can even get a volume control for under $10 for those boards. A low pass filter would not be necessary as handled by the main amp.
Board, power supply and volume control would collectively be about $85, very similar to the mini-amps, which would however be a little more if adding a 48V adapter.
So what are your thoughts/opinions?
@CH-53K I also started same post on Reddit with little contribution there either.
I was planning to go with the Wodom board - priced out all the other things I would need - PSU, blanking plate, feedthroughs etc and about to pull trigger
But then I just came across this - https://fosiaudio.com/pages/monoblock-power-amplifier-v3-mono
That is a new (as yet unreleased) mini amplifier
(It's similar technology to the first two links above, featuring the Texas Instruments TPA3255 Power Amp Chip)
Note the 'kickstarter' link (click on that within the link attached and subsribe for updates)
I signed up for notifications on that & I think I am going to jump on that when it becomes live in about 10 days
Fosi Audio have done Kickstarters before and the pricing for those is generally attractive
The specs on this new V3 mono look enticing especially with the 48V supply
They also have good reputation on YouTube reviews
So I think that might just be my solution - if the price is in line with expectation, I'm going for this.
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