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Modulus-86  build thread
Modulus-86  build thread
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Old 16th May 2018, 04:57 PM   #4151
tomchr is offline tomchr  Canada
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Congratulations. Yeah... The lock time of the PLL in the suprachiasmatic nucleus is a bit long.

Tom
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Modulus-86, 186, 286, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
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Old 16th May 2018, 09:30 PM   #4152
tomchr is offline tomchr  Canada
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Got capacitance?
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File Type: jpg PWR686_ASSY.jpg (247.1 KB, 356 views)
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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 May 2018, 09:33 PM   #4153
poseidonsvoice is offline poseidonsvoice  United States
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Modulus-86  build thread
Me like! Me like!

Best,
Anand.
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Old 16th May 2018, 10:03 PM   #4154
billshurv is offline billshurv  United Kingdom
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Modulus-86  build thread
Quote:
Originally Posted by tomchr View Post
The lock time of the PLL in the suprachiasmatic nucleus is a bit long.

Tom
I do hope that is the first time that particular combination of words has appeared together
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Old 17th May 2018, 03:36 AM   #4155
tomchr is offline tomchr  Canada
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Yes! I can now geek out in multiple disciplines - and cross-couple them. Oh the power! I'm unstoppable.

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 20th May 2018, 11:30 AM   #4156
Reddo is offline Reddo  Netherlands
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Chassis received and more or less assembled. Now for the layout/wiring... would anyone see any problems if it would be more or less like in this picture (I know, there are some wirres issing but it's about the run for the cabling now) ? Mainly EMC stuff etc I'm concerned about. Or shouldn't I ?

Click the image to open in full size.

From power input to transformer can be run high along the side/top or low, underneath the perforated base.

volumepot and selector will be placed on aluminium brackets and shafts extended to the front. Orange thingies are couplers and I will have very small bearing block on the frond plate inner to support the shafts. (good to have a 3d-printer )


Any comments would be welcome.

Thanks !

Last edited by Reddo; 20th May 2018 at 11:36 AM.
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Old 20th May 2018, 12:33 PM   #4157
BYRTT is online now BYRTT  Denmark
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Modulus-86  build thread
Quote:
Originally Posted by Reddo View Post
...Any comments would be welcome.

Thanks !
In general looks great to me except maybe the quality of that selector switch, in past myself used one that looks exactly the same and mine wasn't very good quality to let active music signal stream pass through it in the long run, it would be much better to use it for electric steering of some quality relays, hope its a alright comment and taken for good : )
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Old 20th May 2018, 01:46 PM   #4158
anatech is offline anatech  Canada
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Modulus-86  build thread
Hi Reddo,
I would move the power supply board closer to the transformer to reduce the length of wire carrying high current pulses.

I agree with BYRTT on your input selector switch. Even the older open ones are better for contact performance in the long run. I used one to control a relay and had to pull it after three years. I went with something more reliable.

-Chris
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Old 20th May 2018, 04:21 PM   #4159
tomchr is offline tomchr  Canada
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I'm surprised to hear that the Lorlin/C&K switches wear out that quickly. I guess you do get something when you buy those Elma switches.

Regarding relay switching: That can be a crapshoot as far as reliability goes as well. Don't skimp on the relays if you go that route.

Overall, the arrangement above looks reasonable. I would mount both MOD86 boards top side up. You aren't gaining anything by flipping the one on the right upside down. Yes, the output cabling gets a little longer, but it's in series with your speaker cable, which presumably is longer than the wiring inside the chassis.
Nice touch with the primary wiring running to the heat sink and then to the mains connector. I was about to suggest that when I noticed the white lines in the drawing.

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 20th May 2018, 08:06 PM   #4160
anatech is offline anatech  Canada
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Modulus-86  build thread
Hi Tom,
Quote:
I'm surprised to hear that the Lorlin/C&K switches wear out that quickly.
Like I said Tom, I avoid that brand of switch these days. They work well for a while, then they get so bad you can't get a reasonable amount of time even after cleaning them. I've even tried to take them apart for cleaning and it didn't help that much.

Avoid.

-Chris
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