Mini review: Class-D Designs NX200 vs Hypex - Page 12 - diyAudio
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Old 17th May 2009, 03:45 PM   #111
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I'm listening to the amp with the following system: Behringer SRC2496 (passive output with sowter transformers), diy grounded grid preamp & Rogers LS5/9 speakers.

After a quick blast of Roots Manuva, John Martyn & BBC radio 3 I'm pretty impressed. Bass is deep, powerful and well defined. Mids are smooth. HF is slightly brittle but well resolved - lots of detail but not very sweet. The soundstage seems a bit further back than the UCD amp, but is deep and broad and the amp delivers plenty of atmosphere (lots of resonance where appropriate).

My preamp has capacitor coupled outputs so I can bypass the 22uF ceramics. Given the slight brittleness of the HF this will be my first change. Then it'll be PSU and feedback caps ;-)

As supplied, these modules are great for £40. As it stands, this amp won't be replacing my UCD - in my system the Hypex amp is more dynamic and has a sweeter top end. It's pretty close though, and I'm sure that it'll be even closer after the nasty ceramic cap is bypassed.
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Old 17th May 2009, 05:03 PM   #112
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nice case is hammond ? how hot ?


mod the two caps on pcb with elna silmic or cerafine

you can have a crome effect if you drill brush with cotton
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Old 17th May 2009, 05:51 PM   #113
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The case is from RS in the UK and costs only £22

RS diecast aluminium box 250x250x100mm

It gets quite hot to the touch, but you can hold your hand flat on the panel with the mosfets attached for as long as you like (so it isn't that hot really). I haven't played with bias yet so it may yet get hotter or cooler...

Planning to use Rubycon ZLH for PSU caps.
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Old 17th May 2009, 06:12 PM   #114
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thanks

you thinks that are thesame
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Old 17th May 2009, 10:18 PM   #115
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Nice job Sharpi!

I'll be interested to hear how the mods work out.
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Old 17th May 2009, 10:36 PM   #116
glt is offline glt  United States
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Sharpi31. Thanks for the nice, fair and detailed review.
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Old 17th May 2009, 10:58 PM   #117
jkeny is offline jkeny  Ireland
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Yes, Sharpie, thanks for a sane review - I'm also interested in how the mods turn out
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Old 18th May 2009, 08:49 AM   #118
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Nice, fair, sane, thanks please more. Moderator deleting relevant question and member aliking then encourage more off topic content to pollutoining d forum. What nice fair in sane and that. Can four birds squeeking be full chorus. Rest of thousand who not so fooled easily thinking to this can be at cost of deletion for self in history rewrite of moderator, can no disagree.

Consistant for theme to all bogus class d thread, sucking blood from lore of ucd that war hardend proven. Telling what you expecting to find true, make you easy believer, clapping and giggle, mystified. Rest having say nothing or get delete, nice, fair, sane, yes thanks more, making sick form.

Comparative review that faking comparition, standing who benefit from just implying equivalent to proven. Where is even contestant? Only implied leaving to imagition UCD, all to lore. So to concluding it sound almost same before tweaking, no heatsinking needed that crazy but to prove market lie can be true, saying "nice guy keen for
service", "good for so cheap in comparing". Sane comparition, this only PR tricking.

Maybe thinking too much cost in saying better, and can no with piezo coupling. Next to come, tweaking finish, this now daily cook, still cheaper, now better, thanking to mr so nice for so cheap so good. I still not believing one true come for so many none. Not before tweak and not after tweak.

Where is picture of ucd build and is wired like best said to be or to just having work? Is even having ucd? Will also bypass ucd coupling, ceramic to film is one, DC to film different to, making real announced expectation another still it can be.

Not to forgetting using piezo speaking component coupling having no place in good audio, rest of part in other place can be no better from same selector, picture already telling they cheapest can be. Selling knowing good part maybe lipstick on pig. That all fine to OK for cheap thing when selling as cheap thing, to make believe after it can be as real good thing then believing breaking down.

Comparition making to look same for sane fair, same connector type maybe not same wiring maybe not so good it not shown, same type cap not same rating, no looking to transformer with twice power can make no difference. Still 180 more dynamic? For now before tweaking. Still have to add heat sink in real amp and for worser case, no point for ommission but in proving what say marketing. Keeping hand for some second not make amp long lifetime for cheap part it build from when high heating.

Seeming eager for reviewing for PR, that even allow no time for cap to form. No giggle like baby to me when in few day you back saying what predict new favorite. Sorry no can believing. Nothing in deleted history sane to fair so far no mattering how loud clap. Can't even real enough for play own court when there identical amp that already tweak and better for right rating and not silly efficient class d name for marketing. Compare to it. Laws not even allowing these deceipt, only tweaked forum that delete objectivity when hurts marketing lie. So sane people seeing still, this no interesting to them but to call for how see is real.
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Old 18th May 2009, 09:13 AM   #119
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Quote:
Originally posted by sharpi31
I'm listening to the amp with the following system: Behringer SRC2496 (passive output with sowter transformers), diy grounded grid preamp & Rogers LS5/9 speakers.

After a quick blast of Roots Manuva, John Martyn & BBC radio 3 I'm pretty impressed. Bass is deep, powerful and well defined. Mids are smooth. HF is slightly brittle but well resolved - lots of detail but not very sweet. The soundstage seems a bit further back than the UCD amp, but is deep and broad and the amp delivers plenty of atmosphere (lots of resonance where appropriate).

My preamp has capacitor coupled outputs so I can bypass the 22uF ceramics. Given the slight brittleness of the HF this will be my first change. Then it'll be PSU and feedback caps ;-)

As supplied, these modules are great for £40. As it stands, this amp won't be replacing my UCD - in my system the Hypex amp is more dynamic and has a sweeter top end. It's pretty close though, and I'm sure that it'll be even closer after the nasty ceramic cap is bypassed.

James Nice to have some constructive comments at long last suggest you tell us what mods you see as appropriate, The caps we realise but our main market is not HI FI

Tell us the mods you feel are appropriate we willl add them no problem.
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Old 18th May 2009, 04:15 PM   #120
glt is offline glt  United States
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spitzer,

You are not completely understood or potato, because you do not look for pain to get the English tradusca. And why not finish claim and say something is to see.
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