{"id":551,"date":"2020-10-03T10:01:48","date_gmt":"2020-10-03T10:01:48","guid":{"rendered":"https:\/\/blog.andytather.co.uk\/?page_id=551"},"modified":"2022-12-03T12:14:18","modified_gmt":"2022-12-03T12:14:18","slug":"purifi-the-4ch-build","status":"publish","type":"page","link":"https:\/\/blog.andytather.co.uk\/index.php\/purifi-1et400a\/purifi-the-4ch-build\/","title":{"rendered":"Purifi The (4ch) Build"},"content":{"rendered":"\n

To build 4ch unit with a customised case from Modushop.<\/p>\n\n\n\n

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Using two base plates meant for the shorter version of the case, but at 16cm depth fit the psu and amp\/buffers nicely. PSU is a Hypex SMPS 3KA400.<\/figcaption><\/figure>\n\n\n\n
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Base plates just slide in<\/figcaption><\/figure>\n\n\n\n
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Front LED cables bought with the Neurochrome buffer PCB except used the unused middle wire to extend the other two. Also used 2 pin socket and plugs to make maintenance a little easier.<\/figcaption><\/figure>\n\n\n\n
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Lights are on!<\/p>\n\n\n\n

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Decided to go for v2 of the Neurochrome start-up board. Changes include much reduced size due to the microcontroller, no fuse (IEC has two) & controllable brightness for the LED’s in the front panel switch. Will be turning it on\/off with the 12v trigger from the AVR.<\/p>\n\n\n\n

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Lights are on. Cables braided. Heat shrink is shrunk. Just need to get the lid on.<\/p>\n\n\n\n

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Wires everywhere whilst running in. Dimmed the four channel lights – a little too much. Needs fixing.<\/figcaption><\/figure>\n\n\n\n
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All done.<\/p>\n\n\n\n

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Application Note:<\/strong> The PSU used here is a Hypex\u00a0SMPS3kA400 2 x 65 VDC 3000 Watt Switch Mode Power Supply, which does not feature the 2-quadrant operation that others in the range do. Half bridge modules like the Eigentakt module that are providing frequency range below 100Hz need a workaround of reversing phase for half of the modules. (i.e. swapping the input +\/- of the input buffer and then swapping the speaker output on two of the modules – not shown in the above images)<\/p>\n","protected":false},"excerpt":{"rendered":"

To build 4ch unit with a customised case from Modushop. Lights are on! Decided to go for v2 of the Neurochrome start-up board. Changes include much reduced size due to the microcontroller, no fuse (IEC has two) & controllable brightness for the LED’s in the front panel switch. Will be turning it on\/off with the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":383,"menu_order":1055,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/551"}],"collection":[{"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=551"}],"version-history":[{"count":31,"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/551\/revisions"}],"predecessor-version":[{"id":748,"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/551\/revisions\/748"}],"up":[{"embeddable":true,"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/383"}],"wp:attachment":[{"href":"https:\/\/blog.andytather.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}