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Neurochrome Modulus-286: 65W (8Ω); 125W (4Ω) @ <-120dB THD Composite Amplifier Module
Neurochrome Modulus-286: 65W (8Ω); 125W (4Ω) @ <-120dB THD Composite Amplifier Module
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Old 18th November 2018, 03:25 AM   #21
BrianL is offline BrianL  United States
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Neurochrome Modulus-286: 65W (8Ω); 125W (4Ω) @ <-120dB THD Composite Amplifier Module
How big is a hockey puck? I've never seen one in the flesh. Pretty rare birds in Arizona.
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Old 18th November 2018, 04:20 AM   #22
tomchr is offline tomchr  Canada
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1" (25.4 mm) thick, 3" (76.2 mm) diameter.
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Modulus-86, 186, 286, 286 Kit, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
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Old 18th November 2018, 03:04 PM   #23
chrisb is offline chrisb
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Now that’s some pretty tight squeezing in there Tom. The rear panel layout is particularly clever - which channel is “positive” in the case of bridged mode?
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Old 18th November 2018, 03:18 PM   #24
zgtc is offline zgtc  Europe
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Neurochrome Modulus-286: 65W (8&#937;); 125W (4&#937;) @ &lt;-120dB THD Composite Amplifier Module
what's that plate you mount the connex into? does it come w/ the connex, w/ the dissipante or w/ none of them?
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Old 18th November 2018, 04:05 PM   #25
tomchr is offline tomchr  Canada
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Originally Posted by chrisb View Post
Now thats some pretty tight squeezing in there Tom. The rear panel layout is particularly clever - which channel is positive in the case of bridged mode?
Thank you. Yeah... It took some thought in 3D to get everything shoehorned into the enclosure. I got the idea during Burning Amp and just could not let it go. To calm my brain down, I went home and drew up the CAD drawings. I concluded that it was possible to get the bits to fit, so I pressed on with the project.

To bridge the amp, you need to invert one channel. If you're building the amp with XLR inputs, all you need to do is to make a Y-cable where one of the branches in the Y is inverted (pins 2,3 swapped). If you're building the amp with RCA inputs, you'll need to configure one channel as the inverted channel (swap pins 2,3 on the input connector to the MOD286 board).
The non-inverted channel (+) output is then speaker(+) and the inverted channel (+) output is speaker(-).

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what's that plate you mount the connex into? does it come w/ the connex, w/ the dissipante or w/ none of them?
C: None of them. I designed it for this kit and had it custom made. It will be included with the kit.

Tom
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Modulus-86, 186, 286, 286 Kit, & 686: 40-240W (8Ω) at <-120dB THD. HP-1: 3W/20Ω, -130dB THD, 128dB DNR.
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Old 18th November 2018, 04:08 PM   #26
zgtc is offline zgtc  Europe
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Neurochrome Modulus-286: 65W (8&#937;); 125W (4&#937;) @ &lt;-120dB THD Composite Amplifier Module
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C: None of them. I designed it for this kit and had it custom made. It will be included with the kit.
this build looks PRETTY AWESOME, makes me want to build my 2x86 once and for all
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Old 18th November 2018, 04:39 PM   #27
chrisb is offline chrisb
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Upon closer look at the labelling and detailed interior photo, I see youve used 4 pole Speakons- am I correct in deducing that the L+R/M can be used for mono use, and for both channels in the case of bi-amping - such as with, say LX minis, etc?

For folks with older Mod86 kits awaiting assembly, might you consider offering the chassis, or at least rear panel, separately? I know that with my last scratch build before ACA kits - i.e. Hypex UCD- making a tidy job of hacking out the rear panel by hand was the most time consuming part, for which Id have gladly paid extra over the cost of the stock HiFi2000 slimline chassis.
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Old 18th November 2018, 04:48 PM   #28
tomchr is offline tomchr  Canada
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Originally Posted by zgtc View Post
this build looks PRETTY AWESOME, makes me want to build my 2x86 once and for all
Just do it!

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Originally Posted by chrisb View Post
Upon closer look at the labelling and detailed interior photo, I see youve used 4 pole Speakons- am I correct in deducing that the L+R/M can be used for mono use, and for both channels in the case of bi-amping - such as with, say LX minis, etc?
Yep.

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For folks with older Mod86 kits awaiting assembly, might you consider offering the chassis, or at least rear panel, separately?
The Modulus-86 will not fit in the chassis I'm using for the Modulus-286 Kit. The MOD86 board is quite a bit larger than the MOD286.

You could certainly fit a Modulus-186 in the Modulus-286 Kit chassis. I did consider offering a MOD186 Kit, but it didn't make sense financially. The chassis is the main cost driver, so the MOD186 kit would only be about $100 less than the MOD286 kit. The Modulus-186 would not offer bridging, so I suspect most would spend the extra $100 to get higher output power and bridging capability.

Tom
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Modulus-86, 186, 286, 286 Kit, & 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 18th November 2018, 04:52 PM   #29
chrisb is offline chrisb
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Youre probably right about the last point - Id forgotten to double check those dimensions. I guess that smaller PCB size is only one of the benefits of SMD.
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Old 18th November 2018, 05:44 PM   #30
zgtc is offline zgtc  Europe
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Neurochrome Modulus-286: 65W (8&#937;); 125W (4&#937;) @ &lt;-120dB THD Composite Amplifier Module
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Just do it!
Yeah! I'm narrowing down to 2 options for the DAC and 2 for speakers as well. Case will be last decision but yours got me excited.


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The Modulus-86 will not fit in the chassis I'm using for the Modulus-286 Kit. The MOD86 board is quite a bit larger than the MOD286.
But if I'm not wrong it's also 3cm shorter or so (12x6 vs 9x7 approx?). What I don't find in the page is the height of the Mod86 though. So, in the end, they might fit. To get some extra room, thinking if I could use the same as yours but the 300mm depth instead of the 250mm version.
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