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Old 23rd July 2021, 09:46 AM   #221
Zen Mod is online now Zen Mod  Serbia
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SissySIT R.3
22v5dc, resulting from usual arrangement with 18Vac Donuts, is really sweet spot

so, 22Vdc to 25Vdc rails, is what you need to think of

which means - if they already have 25Vdc bipolar, go for it
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Old 23rd July 2021, 11:06 AM   #222
jonboylaw is offline jonboylaw  United Kingdom
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Quote:
Originally Posted by nautibuoy View Post
I'm building with a conventional CRC power supply but did wonder about using SMPSs so will be interested in how this works out.

I considered ordering a couple of these, customised for the correct SissySIT voltages.

SMPS500R +-45V 230V 500W Switch Mode Power Supply | Hifime Audio
I have used these SMPS PSUs in a couple of Class-D projected and they were very good- completely silent on the audio out and very good quality. I bought them from eBay : SMPS500R +-54V (dual voltage) 230V SMPS Power Supply, PCBStuff, Connexelectronic | eBay

Obviously would need the correct Vout for your SIT requirements (what are they?) plus has auxiliary output for powering speaker protection circuits or other items.
-Jon
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Old 23rd July 2021, 01:03 PM   #223
nautibuoy is offline nautibuoy  United Kingdom
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I'm also using a 600W 48V one to power one of Lester's amplifier modules - very good results.
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Old 23rd July 2021, 01:32 PM   #224
Russellc is offline Russellc  United States
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Quote:
Originally Posted by Zen Mod View Post
well, that is in the end going to be extremelly Fugly!




while I sent abroad more than 2/3 of all recent amp kits, I'm just about ready to receive bunch of LT3092, so I can complete shipment, and invest some time in next batch of new amps

Goody. Almost winter-eve. Brain told me this morning, "If you build Iron turtle and XA252, you wont need to build anymore." Really? silly brain, trix are for kids. I mean really...it was giggling, in background about "once that's done we'll ding dong him until he builds balanced version too." Evil, I tell you.


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Last edited by Russellc; 23rd July 2021 at 01:34 PM.
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Old 23rd July 2021, 01:40 PM   #225
Zen Mod is online now Zen Mod  Serbia
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Good day Group

My name is ZM

I'm ZM



(second time today .......... must put it in my sig)
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Old 23rd July 2021, 02:49 PM   #226
nautibuoy is offline nautibuoy  United Kingdom
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Good to hear from you ZM
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