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Modulus-686: 380W (4Ω); 220W (8Ω) Balanced Composite Power Amp with extremely low THD
Modulus-686: 380W (4Ω); 220W (8Ω) Balanced Composite Power Amp with extremely low THD
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Old 5th February 2019, 03:26 PM   #1011
tomchr is offline tomchr  Canada
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Those should work. At 12 A rating per terminal, they're certainly plenty beefy.

Tom
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Modulus-86, 186, 286, 286 Kit, & 686: 40-240W (8Ω) at <-120dB THD.
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Old 5th February 2019, 05:04 PM   #1012
wcwc is offline wcwc  United States
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Do,


How tall are the heatsinks you are using? 3U or 4U?
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Old 5th February 2019, 07:52 PM   #1013
pinnocchio is offline pinnocchio  Canada
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Quote:
Originally Posted by wcwc View Post
Do,


How tall are the heatsinks you are using? 3U or 4U?
142mm, so roughly 3U

Thanks
Do
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PREAMPs : AMB α10 + USSPA | LDR3x + USSPA | AMPs: AMB β24 | USSA5 | TGM8 | VZ Audio NS OPS | FC-100 | Modulus-686 |
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Old 7th February 2019, 03:42 AM   #1014
pinnocchio is offline pinnocchio  Canada
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Quote:
Originally Posted by tomchr View Post
Those should work. At 12 A rating per terminal, they're certainly plenty beefy.

Tom
Installed them. They worked beautifully and keep the wire at a good distance now.
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PREAMPs : AMB α10 + USSPA | LDR3x + USSPA | AMPs: AMB β24 | USSA5 | TGM8 | VZ Audio NS OPS | FC-100 | Modulus-686 |
DACs : Mirand AK4490 + Discrete Output | Speakers : Troels Gravesen ATS-4 | Sagwee LT V3 |
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Old 7th February 2019, 07:09 PM   #1015
tomchr is offline tomchr  Canada
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Sweet! I'll add a note in the documentation that if you need vertical wire entry, you have options.

Tom
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Modulus-86, 186, 286, 286 Kit, & 686: 40-240W (8Ω) at <-120dB THD.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right
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Old 8th February 2019, 02:55 AM   #1016
zman01 is offline zman01  Bangladesh
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Modulus-686: 380W (4&#937;); 220W (8&#937;) Balanced Composite Power Amp with extremely low THD
Quote:
Originally Posted by pinnocchio View Post
Installed them. They worked beautifully and keep the wire at a good distance now.
Do,

Can you share an image please?

Always good to learn about practices that can keep the wiring well connected and tidy!
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Old 8th February 2019, 06:14 PM   #1017
pinnocchio is offline pinnocchio  Canada
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Quote:
Originally Posted by zman01 View Post
Do,

Can you share an image please?

Always good to learn about practices that can keep the wiring well connected and tidy!
Sure, I'll do this shortly.

I fitted everything in the chassis and made an aluminum plate to hold the two SMPS for the amp. All that is needed now is power cabling, everything else is done.

Ciao!
Do
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PREAMPs : AMB α10 + USSPA | LDR3x + USSPA | AMPs: AMB β24 | USSA5 | TGM8 | VZ Audio NS OPS | FC-100 | Modulus-686 |
DACs : Mirand AK4490 + Discrete Output | Speakers : Troels Gravesen ATS-4 | Sagwee LT V3 |
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Old 9th February 2019, 02:41 AM   #1018
tomchr is offline tomchr  Canada
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Which SMPS did you go with?
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Modulus-86, 186, 286, 286 Kit, & 686: 40-240W (8Ω) at <-120dB THD.
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Old 10th February 2019, 06:08 PM   #1019
pinnocchio is offline pinnocchio  Canada
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Quote:
Originally Posted by tomchr View Post
Which SMPS did you go with?
Hi Tom,

The SMPS800 that you had suggested. I recapped them completely since only the output caps were of good quality. The cheap Chinese caps were still working properly but for the long run, it is better to use quality caps.

Cresnet uses only quality caps in his designs. All the SMPS I got from him had reputable brands. I still have a few of his SMPS but they are higher voltage and are reserved for other projects.

Today I will test the amp with a scope and output some sinus and square wave before I plug it into the speakers. I will post pictures of the final build shortly.

All the best!
Do
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PREAMPs : AMB α10 + USSPA | LDR3x + USSPA | AMPs: AMB β24 | USSA5 | TGM8 | VZ Audio NS OPS | FC-100 | Modulus-686 |
DACs : Mirand AK4490 + Discrete Output | Speakers : Troels Gravesen ATS-4 | Sagwee LT V3 |
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Old 10th February 2019, 09:15 PM   #1020
pinkphiloyd is offline pinkphiloyd  United States
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Has anyone that's using the SMPS300RE from Connex happened to measure it's switching frequency, or seen this info published anywhere, by any chance? I haven't been able to find anything in the way of an actual data sheet and couldn't find this info posted on the website anywhere. I'd appreciate any help.
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