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Old 17th October 2011, 07:39 PM   #2031
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Originally Posted by jleaman View Post
teflon hand made speaker cables, cable from navships ?
Yes, Teflon-insulated UPOCC copper or silver, Neotec-brand conductors in a 4-braid. Bass/MR cable is 2 pairs of 18g. copper; MR/treble cable is a pair of that copper plus a pair of 23g. silver. I terminated it with Audioquest's direct-silver-over-copper spades, large and small for the amp and V'steen 5As. Have also added a 72VDC dielectric-bias system ala Audioquest.

What do you mean by 'cable from navships'? What's a navship?
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Old 18th October 2011, 01:15 AM   #2032
kevinkr is offline kevinkr  United States
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Quote:
Originally Posted by Alexontherocks View Post
However setting AndrewT's bashing aside....the circuit does contain a mistake. Infact 2x 0,33f MKP 275 entrance capacitors are missing... I will post the correct schematic in a moment..
No please don't. I have removed the original schematic because it represents an unacceptable safety hazard and violates forum policy.

Also please note that this is very OT for this thread, this thread is reserved for photographs of solid state amplifier projects.
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Old 18th October 2011, 02:21 AM   #2033
notoso is offline notoso  United States
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@notoso

That's a GOOD LOOKIN' amp! (Inside AND out.)
Thank you for your comments, I appreciated.
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Old 18th October 2011, 03:23 AM   #2034
jleaman is offline jleaman  Belgium
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Quote:
Originally Posted by jeffreybehr View Post
Yes, Teflon-insulated UPOCC copper or silver, Neotec-brand conductors in a 4-braid. Bass/MR cable is 2 pairs of 18g. copper; MR/treble cable is a pair of that copper plus a pair of 23g. silver. I terminated it with Audioquest's direct-silver-over-copper spades, large and small for the amp and V'steen 5As. Have also added a 72VDC dielectric-bias system ala Audioquest.

What do you mean by 'cable from navships'? What's a navship?
navships | eBay

nav ships is the seller on ebay.. he sells teflon wire, one off's on runs from ship wiring harnesses that they can't splice and use. I buy lots of silver wire from him, really good wire too..
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Old 18th October 2011, 03:41 AM   #2035
rfj5106 is offline rfj5106  United States
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Default I am confused! Soft start circuitry unsafe?

Soft start circuitry HAS to connect directly to the AC input (after the on-off switch) and then directly to the toroid transformer for it to work. Why would you need an isolation transformer? I usually use an AC light bulb after the on-off switch. Is that unsafe too? Please explain, I need the education.
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Old 18th October 2011, 09:50 AM   #2036
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Originally Posted by rfj5106 View Post
Soft start circuitry HAS to connect directly to the AC input (after the on-off switch) and then directly to the toroid transformer for it to work. Why would you need an isolation transformer? I usually use an AC light bulb after the on-off switch. Is that unsafe too? Please explain, I need the education.
While having not seen the published schematic, your proposition seems valid, softstart boards use to work on live mains.
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Old 18th October 2011, 12:12 PM   #2037
AndrewT is offline AndrewT  Scotland
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Originally Posted by regiregi22 View Post
While having not seen the published schematic, your proposition seems valid, softstart boards use to work on live mains.
this one is properly designed and yet still carries this Warning.

Quote:
WARNING - CAUTION
As you can see at the picture the pcb will be at mains potential and therefore lethal. You must ensure that this pcb is well protected against unintentional touching. All parts are dangerous to touch when the mains is switched on.
Every builder who incorporates this properly designed pcb, into their equipment, must ensure that they do so in a safe manner.
Users and others must not be put at risk by incompetent builders.
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Last edited by AndrewT; 18th October 2011 at 12:15 PM.
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Old 19th October 2011, 10:27 AM   #2038
rfj5106 is offline rfj5106  United States
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Default Soft Start Circuit

Now that we have established that soft start circuit has to be between the mains and the torroidal transformer can we please have the soft circuit diagram re-posted or a corrected version re-posted? I was interested in studying it but it got yanked before I could see it!
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Old 19th October 2011, 10:29 AM   #2039
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Where the h... are the PICTURES??????????
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Old 19th October 2011, 01:53 PM   #2040
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Originally Posted by rfj5106 View Post
Now that we have established that soft start circuit has to be between the mains and the torroidal transformer can we please have the soft circuit diagram re-posted or a corrected version re-posted? I was interested in studying it but it got yanked before I could see it!
Shall someone share the schematic to show HOW NOT TO DO IT? I wonder if I may be following wrongly regular procedure when designing power supply stages.
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