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Modulus-86  build thread
Modulus-86  build thread
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Old 16th October 2018, 12:13 AM   #4371
tomchr is offline tomchr  Canada
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Quote:
Originally Posted by mattattnet View Post
I am still very very happy with the amp. Certainly the cleanest, crispest sound i have had in audio amps.

My old ears are very sensitive to system distortion, so these low distortion amps have made my listening more enjoyable.
Very cool. It looks like a very nice build there. I'm glad you enjoy it.

Thanks for sharing.

Tom
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Modulus-86, 186, 286, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right
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Old 16th October 2018, 12:55 AM   #4372
jameshillj is offline jameshillj  Australia
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I just love the simplicity of the wiring as it's quite unusual in many of today's diy builds

A question: Do the SMPS have their own fuses so you don't need a 'mains input' chassis fuse?
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Old 16th October 2018, 01:10 AM   #4373
tomchr is offline tomchr  Canada
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Yep. The SMPS-86 has a fuse holder on the board. In its default build, there's no mains wiring needed by the builder. Power inlet, power switch, fuse holder, etc. are all on the board.

Tom
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Modulus-86, 186, 286, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right
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Old 16th October 2018, 01:15 AM   #4374
jameshillj is offline jameshillj  Australia
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Thanks Tom - don't you ever sleep?!
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Old 16th October 2018, 02:52 AM   #4375
tomchr is offline tomchr  Canada
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Sleep is overrated!

More seriously: Yeah. I actually do manage to get 8-9 hours on most nights. That still leaves 15-16 hours to spend on DIY Audio.

Tom
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Modulus-86, 186, 286, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right
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Old Yesterday, 03:52 AM   #4376
tomchr is offline tomchr  Canada
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Those who'd like a bit more of a turnkey build experience should consider my newly launched Modulus-186 and Modulus-286 Rev. 2.0. You can find them in the solid state section of my web store: Solid State Power Amplifiers & Power Supplies | Neurochrome :: Audio

The intro sale will close by November 30th. I expect to have the modules in stock by then.

The Modulus-186 is basically a Modulus-86 in SMD, professionally assembled. I've started a separate vendor's thread for it: Neurochrome Modulus-186: 40W (8Ω); 65W (4Ω) @ <-120dB THD Composite Amplifier Module

I'll keep the Modulus-86 going for as long as I can get the parts for it. In fact I just opened another pack of 100 boards, so it'll be around for a some time to come.

Tom
__________________
Modulus-86, 186, 286, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right

Last edited by tomchr; Yesterday at 03:54 AM.
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Old Yesterday, 04:05 PM   #4377
RobSoet is offline RobSoet
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How this started...
Somewhere a year and a half ago I treated myself to a rather expensive amplifier. That expensive amplifier had a rather anoying mains hum, and because of that, I was not a happy customer. No more amplifiers with transformers I decided and stumbled over the hypex NC400. Great! No mains hum, incredible wide soundstage, detailed bass. Some say it is harsh, but I felt it was no more harsh than that expensive amplifier... .


Then I decided to built the modulus-86. mainly to check out whether I like the sound signature.



I'm using one connex +/- 30V smps300RE power supply per module. Probably more than needed.

Without asking anything, the first thing my wife said when taking out the NC400's and putting the modulus 86 in place was 'sweet'. 'sounds much better'. Which is quite a difference from the 'maybe, sounds all the same to me...' I get typically.


Another interesting side effect is that I suddenly have DAB radio reception again. Not sure whether or where the ncores or the hypex smps taking that out. Makes you wonder about other things... .


So far, I planned to do some A/B testing, but couldn't bring myself taking the mod-86-es out. At domestic sound levels... A really great amplifier.



Thanks Tom
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Old Yesterday, 05:29 PM   #4378
tomchr is offline tomchr  Canada
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Quote:
Originally Posted by RobSoet View Post
[...] hypex NC400. Great! No mains hum, incredible wide soundstage, detailed bass. Some say it is harsh, but I felt it was no more harsh than that expensive amplifier... .
That was my experience with the NC400 as well. Solid bass. Good imaging. Harsh highs - but no more than you'd expect from most other amps.

Quote:
Originally Posted by RobSoet View Post
I'm using one connex +/- 30V smps300RE power supply per module. Probably more than needed.
Good choice.

Quote:
Originally Posted by RobSoet View Post
Without asking anything, the first thing my wife said when taking out the NC400's and putting the modulus 86 in place was 'sweet'. 'sounds much better'. Which is quite a difference from the 'maybe, sounds all the same to me...' I get typically.
I went the other way. I'd been using my Modulus-86 for about a year when a forum member shipped me an NC400 so I could measure it. Naturally, I had to plug it into the stereo. While I enjoyed the tight grip on the bass, I didn't like the highs. I missed the MOD86.

Quote:
Originally Posted by RobSoet View Post
Another interesting side effect is that I suddenly have DAB radio reception again. Not sure whether or where the ncores or the hypex smps taking that out. Makes you wonder about other things... .
Oh, that's interesting. It'd be interesting to plug the NC400 in. Just plug it into the mains and turn it on. See if the reception goes down. If not, connect an input cable (leave the other end floating) and see if the added antenna changes anything.

Quote:
Originally Posted by RobSoet View Post
So far, I planned to do some A/B testing, but couldn't bring myself taking the mod-86-es out. At domestic sound levels... A really great amplifier.
That's awesome. Thanks for writing. I appreciate it. Those who wish for sound levels exceeding 'domestic' now have the Modulus-686 as an option.

Tom
__________________
Modulus-86, 186, 286, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right
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Old Today, 11:36 AM   #4379
RobSoet is offline RobSoet
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Quote:
Originally Posted by tomchr View Post
Oh, that's interesting. It'd be interesting to plug the NC400 in. Just plug it into the mains and turn it on. See if the reception goes down. If not, connect an input cable (leave the other end floating) and see if the added antenna changes anything.


Tom



I tried the "just plug in the mains" this morning (with the NC400 on top of the mod-86 on top of the tuner...). No change at all (i.e. still good DAB reception). I'll plug in some connectors soon.



Rob
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