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Old 23rd April 2012, 08:43 AM   #221
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PCB wiring under inspection ... few mistakes revealed.
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Old 23rd April 2012, 08:54 AM   #222
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......waiting for modification to see if mistake are comimg from schematic or from library (frequently different pin assignation for same part). If schematic and library are right in eagle.....wiring should be right.

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Old 23rd April 2012, 09:02 AM   #223
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Yes, parts pinouts are the reason, nothing dramatical, only few corrections will folow.

I saw very nice equipment in your web page, impressive builts indeed. TSSA should be like one of them, to fit in with quality.
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Old 23rd April 2012, 09:09 AM   #224
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Quote:
Originally Posted by Lazy Cat View Post

I saw very nice equipment in your web page, impressive builts indeed. TSSA should be like one of them, to fit in with quality.
Thanks LC. I am on brainstorming about TSSA casing mix wood/alumium for sure, perhaps glossy lacker as i have painting equipment for (air compressor and car spray-gun)...

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Last edited by Idefixes; 23rd April 2012 at 09:13 AM.
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Old 23rd April 2012, 09:17 AM   #225
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Quote:
Originally Posted by Lazy Cat View Post
Yes, parts pinouts are the reason, nothing dramatical, only few corrections will folow.
That's a real problem for parts purchasing. With some dealer you are not sure the brand you will have so possible pin layout differences. That's why i like to go to stores as mouser where when order onsemi you have onsemi in packet and for each part type,you can easy have online datasheets.

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Old 23rd April 2012, 11:31 AM   #226
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I am realy curious what listening test will show. Where on your favourite list TSSA will rank. Important and quality selective is also final assembly with wiring especially ground wires and grounding.
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Old 23rd April 2012, 12:19 PM   #227
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Quote:
Originally Posted by Lazy Cat View Post
I am realy curious what listening test will show. Where on your favourite list TSSA will rank. Important and quality selective is also final assembly with wiring especially ground wires and grounding.
That's for sure and can be tricky. The design i have in mind stay on 2 mono blocs. Wiring must be as short as possible. I want to put the distance i can between power wiring and signal wiring. Also main AC wiring must be isolated from the rest as the trafo to. I think to install a steel plate to isolate trafo from rest of amp. For ground wiring i think i will drawn a little schematic a submit it to you.

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Old 23rd April 2012, 12:20 PM   #228
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OK, here's my final check of PCB parts & wiring, also some component's position adjustments to enable wider tracks were done. Hopefully it would be managable, Marc what do you think?
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File Type: jpg TSSA BIGBT HP PCB MOD.jpg (1.01 MB, 413 views)
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Old 23rd April 2012, 12:38 PM   #229
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Quote:
Originally Posted by Lazy Cat View Post
OK, here's my final check of PCB parts & wiring, also some component's position adjustments to enable wider tracks were done. Hopefully it would be managable, Marc what do you think?
Hi LC i will work on modification this evening. I was sure there was an issue with 2N. It's typicaly the part with pin layout depending manufacturer. The unit i ordered are normaly Fairchild and have different pin layout as onsemi. Is 2N5462 layout OK?

May there is an issue with 0r22 R13 new position see attachement.

Marc
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File Type: jpg TSSA BIGBT HP PCB MOD_issue.jpg (187.4 KB, 356 views)
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Last edited by Idefixes; 23rd April 2012 at 12:41 PM.
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Old 23rd April 2012, 01:02 PM   #230
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Yes, 2N5462 is OK. That in red circle is base track connection, it can be thiner no problem only mA flows. 0,22 ohm were actually moved to sides because of collector connections, tracks flows 10 Ap range current and now can be wider.

What is your favourite amp from your collection, is it Pass Susy?
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