Obviously the Purify module, but implementation will vary between DIY and production. If you can get the required output power, gain and a SINAD > 100 dB with an additional 6-9 dB requires a bit of work.
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2nd generation EIGENTAKT PURIFI 1ET6525SA (successor to the 1ET400A)
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You obviously went to a much better kindergarten than I or any of the engineers with whom I worked for decades designing state of the art circuits. Achieving >100 dB dynamic range, let alone 120~140 dB, requires a lot more than throwing an op-amp on a board. Op-amps themselves have quirks that may not be obvious until you work with them a bit, especially for high dynamic range circuits. Then there is implementation... Seemingly trivial things like guard rings (which may make things better or worse), placement and routing of decoupling and signal lines, shielding, proper component choice for coupling and decoupling caps and other passive components, etc. depends upon the application and throwing an eval board in the box (or even copying the layout) will not always work.
But thanks for trivializing my career (and all the other great designers who failed kindergarten and learned in the field).
The Purifi modules are being mass produced for many different implementations. If you're building production amps, you want to get a reliable input gain stage design which can go into production. This is non trivial, but there are a fair amount of DIY implementations that look good and you can build a nice 2-channel Purifi amp for >$3,000.
That's impressive. For the rest of us humans it takes at least 3-4 tries.
No. Eagle. Eventually Altium in a couple of years.
Depends on your requirements of frequency range, noise, dynamic range and required gain. They can become difficult. Ask NG or Raytheon when they do radar or EW amplifier designs for aircraft and ships. Those analog circuits can put noise on digital circuits manifesting in strange results.
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Care to enlighten us as to why you came here? Its looking more and more like its to goad existing members in the amp business.
If it is, just move on. If its something else I am all ears.
Thanks
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Good . Then maybe cut the condescension and dial up the contribution a notch . SNR and all that . Thanks .
That's not THD+N, that's THD. It is a plot from an ES9039 demo board. I already told you that it was mislabeled last time you came here Mike. Could you please at least improve at trolling?
@Jimbob54 figured out who this was and gave him the boot. He’s like mold on the shower stall.
was wondering what took so long....
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Plenty more to get stuck into if you fancy it. Bring your big boy wellies though ;-)
Attachments
Is that the moderator training video?
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What is this 'training' of which you speak. I was given a mop and promised the choicest pickings from the bottom of the trough .
Ah so the truth is out finally, you mods all have your nose in the trough.
(Cross-posting this from another thread)
So i've got a pair of Sierra LX's (https://ascendacoustics.com/products/sierra-lx-pair?variant=40080757227574) and I have been waffling on pulling the trigger on one of these 1ET6525SA amps. Does anyone think the extra power @ 8ohms of the NCx500 would make a difference here? My gut says no but could use some confirmation bias ha. Thanks!
So i've got a pair of Sierra LX's (https://ascendacoustics.com/products/sierra-lx-pair?variant=40080757227574) and I have been waffling on pulling the trigger on one of these 1ET6525SA amps. Does anyone think the extra power @ 8ohms of the NCx500 would make a difference here? My gut says no but could use some confirmation bias ha. Thanks!
The NCx500 will give you 2 dB more headroom, at the cost of more thermal losses (heat).
Are the NCx500 Hypex modules considerably less efficient than the Purifi 1ET6525SA modules? I thought the difference was a couple of percentage points. Purifi being 94% efficient vs. 92-93% for the Hypex? Or is this due to the implementation of the power supply rail voltage selection?
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Agreed. In my Kilowatt tests of Purifi amps they always use less energy while idle and at normal 60-70dB play back levels than Hypex designs by a good 8-9 watts. That 9W doesn't seem like much but it translates into heat.
In blind tests, the easiest way to tell a Hypex build from a Purifi build (after 30 minutes of use) is simply place your hand on top of the amp case. The Purifi equipped amp runs significantly cooler.
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