My NXV-500 Amp Build - diyAudio
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Old 31st July 2015, 12:15 AM   #1
bikenut is offline bikenut  Canada
diyAudio Member
Join Date: May 2008
Location: Stouffville, Ontario
Default My NXV-500 Amp Build

Hello Folks:
After reviewing this thread and reviews on the Holton Amp site I decided to take the plunge and build a NXV-500 amp. It's a dual mono, single chassis amp. I didn't have the space for 2 mono amps in my audio stand. I'd like to thank all the guys who have posted their amps on this site. They really helped me make up my mind on this project, and gave me a lot of ideas on how to put all this together.

I've only ever built from scratch an Audio Note DAC kit, which involved soldering all the components on the boards, and that went well.
I have needed quite a bit of help online from Anthony at Holton Amps. Many thanks to him.

I'm almost finished, I shorted out something on one of the Volt One modules adjusting the voltage, and after trying to fix it with guidance from Holton Amps, I've returned it to Anthony for repair. So, I really haven't be able to listen to it, other than a very short test to see that it produced music, this was before I started to adjust the voltages, and bias settings. So, I'm excited to finally finish it and start enjoying the amp.

Here is the config of my amp:
2 x NXV500L modules
2 x NXVPSU-Two modules
2 x NXVolt One R2.1 modules
1 x Power One R3.0 AC mains controller

Chassis - ModuShop Chassis from Italy
Transformers - 2 x 800VA from SumR made locally near me around Toronto.

I wasn't prepared for all the drilling of holes in the metal chassis, especially without owning a drill press. Also, I should have ordered a larger chassis, fitting everything in a single chassis was a challenge, but after making a brace to raise the 500 amp boards, it all fit. Got that idea from someone else on this site.

Here are some pics of my almost finished amp. The quality of some photos is not great. The LED power button I like, it's blue when not on, turns red when manually turned on, and is a kind of pink when turned on via the 12v trigger. It was hard to get a nice photo of the LED lights. I also included the specs on the transformers I ordered, with guidance from Anthony at Holton.

Regards, Bill
Stouffville, Ontario, Canada
Attached Images
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File Type: jpg SumR Transformers Specs.jpg (283.9 KB, 27 views)
File Type: jpg IMG_0730.JPG (62.3 KB, 30 views)

Last edited by bikenut; 31st July 2015 at 12:16 AM. Reason: add my name
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