TomJ
Active Member
Totally agree, consistent with my experience as well
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DIY Purifi Amp builds
- Thread starter JimB
- Start date
I already have the 300 mm wide case. If I could just get a new back panel to accommodate the Eval 1 module, I would be set. Any idea how I could do that. I think the 315 mm length of the case is sufficient for the Eval 1 and a single Hypex Smps1200A400. Now if someone offerred a complete set of wiring harnesses....
As for the back panel: there are places everywhere that will cut a piece of aluminium to any shape you want and also place holes where you want. You just have to deliver CAD files. I learned how to do that in 30 minutes, so it cannot be that difficult.
As for wiring harnesses, in the worst case it is just a matter of purchasing the right connectors and pre crimped leads. However, the EVAL1 kit comes with wiring harnesses that can be used with a SMPS1200A400. as long as the power input on the FE02 board (the input board in the EVAL1 kit) is not more than 25cm far from the output of the SMPS you are already set
How many times have we read on this site that once an amp reaches a certain level of performance, it sounds like all other amps that have reached a certain level of performance?
With the distortion in speakers, room effects, limits of human hearing, etc., it is doubtful there is a statistically significant difference between these two amps.
Weren't you the guy saying 15 watts wouldn't add any heat to a super insulated house? This is the audio equivalent of 15 watts.
OP
- Thread Starter
- #825
Is 300 x 315 mm big enough? Absolutely. My mock-up here is for a Ghent 200 x 315 mm case:
https://www.audiosciencereview.com/forum/index.php?threads/diy-purifi-amp-builds.10478/#post-289897
I think the one they are working for the Purifi modules is going to be 250mm wide (by ??? long). What case do you have, specifically? You might be able to use the existing back panel, as-is, depending on exactly what you want to achieve.
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This is the case I bought. The back is not configured like the Eval board, so it will have to be replaced, but it should be long enough. If I just have a CAD file for a back, I could probably find a vendor PDQ.
Given how well the Eval 1 version tested, I don't see a need for a custom buffer. I think (pls tell me if I am wrong) plug this straight into a single Smps1200A400 PSU, and have a complete, well functioning amp. Can probably do it for around $1000 USD given I already have the case.
https://www.ghentaudio.com/kit/ncore-se-300w.html
You can always connect the board to the back. use XLR connectors to the FE02's inputs, and wire them to the XLR sockets the GHENT case. Same for the speaker outs: use very tight z-plugs.
Sounds even cheaper if I have enough room.
Yes, what's your point?
I have already posted twice about the scientific evidence that small tilts in frequency response ARE audible. So that level is above the level of difference in performance where it becomes audible. So why are you continuing to argue? Jeez.
The rest of your post is irrelevant.
You haven't posted any scientific evidence of anything. You haven't proven anything is audible. Just some hand waving, tiny, insignificant sample, etc. I get it, you are trying to pedal a product- what else can you say?
I posted a reference. From one of the world's most eminent authorities on the subject. Up to you to go and investigate it. It confirms my own findings.
I sell both Purifi and Hypex. Far more Hypex products in the range than Purifi. Some more expensive than the Purifi. I would gain most from saying they sound the same or Hypex is better, not Purifi.
Simple fact is that they don't sound the same and there is a simple technical explanation as to why.
With comments like that it seems I was correct that you are just trolling for an argument. Another for ignore.
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This is getting a little ill-tempered. Can we get back to the OP please.
This audibility discussion can be continued in a new thread .
This audibility discussion can be continued in a new thread .
My Ghent case does not feature a front power button, but he may be willing to do a special order with a drilled hole for that.
OP
- Thread Starter
- #836
Right! This was addressed early in this topic. @phoenixdogfan, take a look, starting here:
https://www.audiosciencereview.com/...iy-purifi-amp-builds.10478/page-8#post-296204
Of course, you do need to drill the bottom to match the Purifi parts, but that is relatively easy and not cosmetic. The hole patterns are on the Purifi datasheets.
indeed, after reading that post, that’s what I did for a couple of intermediate iterations of my build: look HERE
Wondering if you could just use Hypex's kit here to get a complete set of "off the shelf" connection materials to hook up the SMPS1200A400 to the Eval 1.
https://www.diyclassd.com/product/smps1200a400-onto-2x-nc400-connection-kit/117
https://www.diyclassd.com/product/smps1200a400-onto-2x-nc400-connection-kit/117
OP
- Thread Starter
- #839
Nice! Maybe post #0501 here? And just note that one could do it without adding the Neurochrome board in the inlet path. Also, in the case of the Ghent case, where 'length' matters a bit, note that the speaker connections could be made from the backside of the sockets, as they are open, too.
