boXem ARTHUR 2408/N2 Review (Stereo Amplifier)

[pma]

If anodized orange it's great although in paint it will be cheesy and difficult to control paint flow in the front panel machined text.

You can always, even as a DIYer, order the job at the qualified company. You pay the money, of course, and DIY is not about any savings, then. It is about pleasure and good feeling from the finished job. Much better then if you buy the thing.

 

[JDS]

The boxem website lists a special bridging cable, suggesting that these amps can be bridged. But the descriptions and specs of their individual amps do not discuss that. Can it be done? What are the specs in bridge mode?

 

[boXem]

Yes it can be

Now days, its easy to find a chinese supplier
Box is from china, tell them what you want, they do it for cheap

Case design is by myself, manufactured in France, by the same company that manufactures Atoll front plates and Trinov cases.
Audio sense board design and firmware programming by myself, SMT in Luxembourg.
Harnesses and amp assembly in Luxembourg.

 

[boXem]

If anodized orange it's great although in paint it will be cheesy and difficult to control paint flow in the front panel machined text.

It is painted. It is extremely difficult if not impossible to get the same color between two anodizing batches.

 

[boXem]

The boxem website lists a special bridging cable, suggesting that these amps can be bridged. But the descriptions and specs of their individual amps do not discuss that. Can it be done? What are the specs in bridge mode?

Yes, all three stereo amps can be bridged. The specs listed are the ones tested, bridged mode is not tested.
For the record, @1%THD+N:
2408/N2: 200W @4Ohm, 250W @8Ohm, min load 4Ohm
3409/N2: 400W @4Ohm, 500W @8Ohm, min load 4Ohm
4215/E2: 900W @4Ohm, 600W @8Ohm, min load 2Ohm

 

[gsp1971]

@Gremlins
Welcome to ASR, Gremlins.
I understand you are excited to participate but it would help if you took the time to familiarize yourself a little more with the website, the forums, and the members.

 

[storing]

408/N2: 200W @4Ohm, 250W @8Ohm, min load 4Ohm
3409/N2: 400W @4Ohm, 500W @8Ohm, min load 4Ohm
4215/E2: 900W @4Ohm, 600W @8Ohm, min load 2Ohm

Can you clarify what these numbers are exactly, and the difference with the numbers shown on your website?

 

[JDS]

Yes, all three stereo amps can be bridged. The specs listed are the ones tested, bridged mode is not tested.
For the record, @1%THD+N:
2408/N2: 200W @4Ohm, 250W @8Ohm, min load 4Ohm
3409/N2: 400W @4Ohm, 500W @8Ohm, min load 4Ohm
4215/E2: 900W @4Ohm, 600W @8Ohm, min load 2Ohm

Thanks!

 

[pma]

Can you clarify what these numbers are exactly, and the difference with the numbers shown on your website?

The numbers would be from Hypex OEM module datasheets for BTL .

 

[Dmitri]

In terms of aesthetics and build quality... I find the pricing of the Arthur though maybe a bit on the high side, within acceptable range. I’d just rather not pay extra for something that I would rarely be seeing in my set up, and this particular model the power output wouldn’t fulfill my requirements. Frankly, as I get older everything seems more and more overpriced nowadays...my references being from a previous life... ; )
It’s a gorgeous little amp...And if the aesthetics were important to me...as opposed to the basic build of the Buckeye amps, I’d definitely give them a harder look. Different modules aside, I don’t see Buckeye/boXem audio as apples to apples comparisons. They are both well built, appear to have excellent support and communication, but ultimately serve different market niches.

So boXem, AKA Hans Solo...Nicely done!

 

[Vini darko]

Yes you would

I don't understand your comment in your signature : addicted to fun and learning ..

DiY is about fun and learning

Hi that tag only correlates to number of posts here at asr. You will have the same tag after member.

 

[boXem]

Can you clarify what these numbers are exactly, and the difference with the numbers shown on your website?

These are numbers obtained by driving the 2 channels with the same signal in opposition and wiring one single speaker to the positive pole of each output.

 

[Harmonie]

Right

But the measurements are good, ans similar to hypex module

The guy doesn't make magic . So we canot say the measuremenst belongs to him.

Its a hypex module

Implementation, is no magic. A minilum clever guy that wantvtonopen business will study a little before and " industrialise" processes .

At the end , its a hypex amp

We have seen clumsy soldered amps with a lot of flaws.
So that there is a minimum of implementation, well cabled, soldiered, machined and good service with a sense of responsibility.

So all that together makes the brand and from the experience here at ASR, I can attest that boXem is certainly one of them.

It's easy to criticize, it's wiser if it's constructive

 

[AdamG]

Nit certain why we should compliment this brand as it is using hypex modules.

The guy is just assembling moduled, isnt it?

This is a Technical product review thread. Not a DIY conversation. You are welcome to start a New DIY Thread about this product or any other product reviewed here. Your continued diy focused comments are off topic in this particular thread. Please stay on topic about the review and results of the testing conducted. Please and thank you.

Reply ban issued.

 

[sarumbear]

Could only see a real reduction at 8Hz in my tests:

8 Hertz?

 

[abdo123]

8 Hertz?

maybe someone out there wants to use this with a tank-sized bass horn, who knows?

 

[peniku8]

8 Hertz?

There are large sealed subs that can run into the single digits, mostly seen in a dual opposed configuration, but many also run tacticle transducers in their home theaters. Both use cases require good power down to 5Hz for some. There are people out there who run 8 sealed 21" subs or more, you can start chasing after single digits once you reach a few square meters of cone area
Edit: just to add, no you won't be hooking up a bunch of 21-inchers to an amp like this, but tactile systems can sometimes run with relatively moderate amounts of power, in which case it's good to know if a smaller amp would suffice if it can handle frequencies that low.

 

[sarumbear]

There are large sealed subs that can run into the single digits, mostly seen in a dual opposed configuration…

The length of a 8Hz sound wave is 42 meters. Even at quarter wavelength you need a room with 10m wide/deep. It’s not possible to create 8Hz in a standard residential listening room.

 

[Madjalapeno]

There are large sealed subs that can run into the single digits, mostly seen in a dual opposed configuration

Best I can do. Freaked my dog out as you can see at the end.

 

[restorer-john]

The length of a 8Hz sound wave is 42 meters. Even at quarter wavelength you need a room with 10m wide/deep. It’s not possible to create 8Hz in a standard residential listening room.

And the point being?

Amplifiers are measured across their rated bandwidth and in the case of the Hypex modules, they specify down to 0Hz.