AudioCircle
Audio/Video Gear and Systems => Owner's Circles => Niteshade Audio => Topic started by: Niteshade on 16 Feb 2012, 02:17 pm
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(http://www.audiocircle.com/image.php?id=58027)
(http://www.audiocircle.com/image.php?id=58028)
(http://www.audiocircle.com/image.php?id=58029)
(http://www.audiocircle.com/image.php?id=58030)
The holes on the back are for attaching a heat sink which is on an aluminum subframe. The subframe has to be mounted first and the sink is second. After that, everything else is done.
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Hi Blair and all Audio Circle members.
Nice units !
Can the rear power socket be mounted vertically instead of horizontaly?
Can I supply my own 12VDC connectors (Two sets of male/female connectors) which are heavy duty model?
I don't like the 1/4" phono jack, but that's me.
Guy 13
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The power socket can be mounted differently. The enclosure is three inches tall. You may supply your own connectors.
A good upgrade would be the use of Speakon's for the PS & Amp. I was also thinking of insulated 5-ways for the output.
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The power socket can be mounted differently. The enclosure is three inches tall. You may supply your own connectors.
A good upgrade would be the use of Speakon's for the PS & Amp. I was also thinking of insulated 5-ways for the output.
Hi Blair and all Audio Circle members.
Can you explain further more what is insulated 5-ways for the output.
A picture would be even better.
Slowly but shurely you are getting closer (Cosmetically) to what I want.
By the time I get back to Canada, maybe you will be able to offer me exactly what I have been looking for for many years.
Keep up the good work.
Guy 13.
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An insulated 5-way is what you see on the back of my amplifiers for speakers. They have a black insulated nut that goes over a shaft with a hole in it. They have an industry standard spacing for test equipment leads and can accept probes, banana plugs, bare wire, lugs, etc... The ones I use are rated for 20 Amps DC, low voltage and are gold plated.
I an amp here receiving a Mark III upgrade, so I'll take a photo of that.
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An insulated 5-way is what you see on the back of my amplifiers for speakers. They have a black insulated nut that goes over a shaft with a hole in it. They have an industry standard spacing for test equipment leads and can accept probes, banana plugs, bare wire, lugs, etc... The ones I use are rated for 20 Amps DC, low voltage and are gold plated.
I an amp here receiving a Mark III upgrade, so I'll take a photo of that.
Hi Blair and all Audio Circle members.
5 ways speaker terminals. Hummm...
With those, can you not plug them in reverse if you don't follow the polarity color (Red + black) ? ? ?
Always ready to feast my eyes with pictures of nice stuff.
Your NS-40 is 1,200 USD and your NS-SEP20 is 1,250 USD.
Since my Audio 13 (GR Research) speakers ar 95DB+ efficient, I was wondering if I would be better with the NS-SEP20, 20wpc is more than enough for me.
In your opinion, which one as better sound?
Guy 13
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Yes- you could plug the wires in backwards with 5-ways. Perhaps Speakons would be better.
Which would sound better- a SEP20 or NS-40. That depends on what you and/or your customers value the most. The dividing line between them regarding performance has become VERY thin since the MKIII upgrades and since both operate best with DC filaments. Both amps provide attention to minute details. The NS-40 has more dynamic range than the SEP20, yet the SEP20 has a fluidness to it that reminds me of an 845 amplifier. It differs from an 845 in that the top is not not blunt nor is the middle frequency response bloated. So- think high end 845 with a linear frequency response.
Something you'll like: The 240 watt power supply shown here can operate an amplifier plus a preamplifier at the same time. This is for the filaments only. It can even operate two 100 watt mono blocks and a preamp at once.
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SEP20 + PS-240 = A wonderful combination.
(http://www.audiocircle.com/image.php?id=58356)
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An insulated 5-way is what you see on the back of my amplifiers for speakers. They have a black insulated nut that goes over a shaft with a hole in it. They have an industry standard spacing for test equipment leads and can accept probes, banana plugs, bare wire, lugs, etc... The ones I use are rated for 20 Amps DC, low voltage and are gold plated.
I an amp here receiving a Mark III upgrade, so I'll take a photo of that.
Hi Blair and all Audio Circle members.
I saw somewhere in one of your threads that your DC filament power supply as an output of 12VDC,
but all the tubes (Except rectification) are 6V
(6L6 - 6SN7).
Can you clarify?
Also, about the 5ways terminals you mention above,
if the wires are connected in reverse, it should not matter since the filaments do not have a polarity, am I correct?
Guy 13
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SEP20 + PS-240 = A wonderful combination.
(http://www.audiocircle.com/image.php?id=58356)
Hi Blair and all Audio Circle members.
If the DC filament power supply enclosure length was the same as the depth of the main amplifier,
it would take less space and maybe also look nicer.
What do you think?
Guy 13
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It could be made the same depth (10") as the amplifier. However, it can not be made shorter. The board takes up about 75% of the space. The other 25% is for everything else. In fact, models that are made to run more than a single tube device will have to be made longer.
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It could be made the same depth (10") as the amplifier. However, it can not be made shorter. The board takes up about 75% of the space. The other 25% is for everything else. In fact, models that are made to run more than a single tube device will have to be made longer.
Yes, I think guy is talking about stacking them though. :dunno:
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Ah- Stacking. It could be done- however, a spacer should be used in between them or I could put rubber feet on the amp or preamp.
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With this upgraded ps what additional tubes are available for rolling besides the 6L6 types ? KT66 ? KT88 ? any 8 pin ?
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Ah- Stacking. It could be done- however, a spacer should be used in between them or I could put rubber feet on the amp or preamp.
I think what Guy13 means is to orient the enclosure so what are now the front and back will become the sides.
So the power switch and the on light will be moved to one of the shorter sides and the power inlet to the other short side. In that way it will take up less shelf width.
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I have to keep it the wide way for now due to the size of the internal components.
There is no limitation on filament current with this supply. You could even run two big mono blocks PLUS a preamp.
If the amp has 4 KT88's, the draw is going to be roughly 36 watts. Add 9 watts for the 6SN7's.
NOTE: I am presently working on the power supplies to get a few more volts out of them so I can have a wider adjustment range.
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I think what Guy13 means is to orient the enclosure so what are now the front and back will become the sides.
So the power switch and the on light will be moved to one of the shorter sides and the power inlet to the other short side. In that way it will take up less shelf width.
Hi Blair and all Audio Circle members.
What I mean is same height and depth for the DC filament chassis.
Below, my hand sketch should clarify what I mean.
I still have an unanswered question.
The DC filament power supply should not have any issue with polarity, since the tube filament are not polarized.
Guy 13.
(http://www.audiocircle.com/image.php?id=58465)
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I see. I like the way it looks too.
The best thing that can be done it to make the power supply the same depth as the amp. It can not be made any less wide due to the way these have to be constructed, size of internal components and because the backside sockets need room.
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Guy 13.
(http://www.audiocircle.com/image.php?id=58465)
I think if you add some drawn people you would have a heck of a NS cartoon.
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I see. I like the way it looks too.
The best thing that can be done it to make the power supply the same depth as the amp. It can not be made any less wide due to the way these have to be constructed, size of internal components and because the backside sockets need room.
Hi Blair and all Audio Circle members.
The same depth as the main amplifier is good.
How wide is the actual DC filament power supply?
Guy 13
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I think if you add some drawn people you would have a heck of a NS cartoon.
Hi JTW and all Audio Circle members.
How about this little funny face, does that make my sketch some kind of cartoon?
Guy 13
(http://www.audiocircle.com/image.php?id=58512)
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Yeah- we could always use some extra quality art work! Thanks!
I am making progress on upgrading the 240W supply. They are built exceptionally well and are a pleasure to work with mechanically.
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The 240W power supply components did not pass my tests and will not be sold. They do work, but do not perform exactly as I intended them to.
However, we are making a 396 watt model in its place for no additional charge to our customers. It will be bigger (17x10x3) and match our amps and preamps perfectly.
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Ready to be confused?
We're keeping the 240W power supply. It has been fixed and it's working perfectly.
The insides are going to be replaced AND upgraded. Premium capacitors will be installed in these new units. How's it working now? A dream come true! No surprises. Great regulation, extremely quiet.
The upgraded 240W models will be available next week.
What about the last post? The power supply capable of cooking a small turkey will be available shortly.
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Blair, what do you consider to be premium capacitors and what was the trick that fixed the original design?
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what was the trick that fixed the original design?
Plugged into the wall. :P
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Plugged into the wall. :P
Hi JTW and all Audio Circle members.
Yes, it helps plugging a unit in the wall... (LOL)
Guy 13
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Ready to be confused?
We're keeping the 240W power supply. It has been fixed and it's working perfectly.
The insides are going to be replaced AND upgraded. Premium capacitors will be installed in these new units. How's it working now? A dream come true! No surprises. Great regulation, extremely quiet.
The upgraded 240W models will be available next week.
What about the last post? The power supply capable of cooking a small turkey will be available shortly.
Hi Blair and all Audio Circle members.
Your DC filament venture was indeed a little confusing, however, I am glad to see that it has an happy ending.
If the DC filament unit is the same size as your NS-40, can we put under the NS-40 ?
Not overheat problem ?
Will the power switch of the DC filament match the one of the NS-40 ? (Placement, color and model)
Guy 13
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After several hours on the bench, I determined the board I was using was not up to the job. It had flaws that were due to the design, they were not defective. It's unfortunate since their build quality was outstanding. Build quality (board layout, components) and the electrical design are two different things.
A new board is going to be used. The capacitors that will be installed are commercial grade instead of consumer grade. My favorite caps work at up to 105 deg. Celsius and are compact, using the latest technology to allow for a smaller body. AKA: More carefully made.
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The 240W model can be made to fit under the amp and there would be no heat issues. It is very efficient. The power switch can match everything else. Not a problem. Either a rocker or toggle can be used.
Hi Blair and all Audio Circle members.
Your DC filament venture was indeed a little confusing, however, I am glad to see that it has an happy ending.
If the DC filament unit is the same size as your NS-40, can we put under the NS-40 ?
Not overheat problem ?
Will the power switch of the DC filament match the one of the NS-40 ? (Placement, color and model)
Guy 13
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Good news: The revised 240W supplies are excellent and pass with flying colors. I've had one drawing enough of a load to make the output wires warm without any issues. The voltage stays constant, better than 1%. Line voltage variations (100-128V) are not an issue and they run cool.
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Looks a great PowerSupply indeed, mainly due the huge outlet line voltages swing on input, this Supply supports.
Usually the PowerSupply on amps, accept only 5 percent drop voltage at input.
Congratulations
P.S.:> In my country I see the tension drop 10% everyday, say from 220V from 200V. The usual Tension level is 205-210V, that is very low to a standard PowerSupply.
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Good news: The revised 240W supplies are excellent and pass with flying colors. I've had one drawing enough of a load to make the output wires warm without any issues. The voltage stays constant, better than 1%. Line voltage variations (100-128V) are not an issue and they run cool.
Deafening silence !!! what's the latest ? based on the last posting thought items would have been shipped by now. :(
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We're waiting for the capacitors to come in. Otherwise, they are still working 100%. There was a time lapse in ordering the upgrade caps in order to make certain the new supplies were working perfectly. The new caps should be in early next week.
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oops..Forgot about the caps... Tks for the update.
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The capacitors are in. What a difference from the originals!
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Blair, could a battery power supply be feasible with the NS-40?
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The capacitors are in. What a difference from the originals!
I am now seeing this post from the 12th March. Is there another problem why units have not been shipped ??
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You could you a 12V battery. The size would depend on how long you'd want to listen for.
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The supplies are fine and I will get them out this coming week. There were some major vehicle issues that had to be fixed plus other things. One of them was interesting: After a diagnostic and much reading, a $7.00 can of MAF sensor cleaner eliminated a possible $1800.00 repair bill. (Long story). The other truck decided not to start- but that is fixed as well.
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You could you a 12V battery. The size would depend on how long you'd want to listen for.
You have a pm.
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If you try it, let us know how it sounds.
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Well I have had the upgraded p.s. running in my system now for over a week. I got into this upgrade by accident, having purchased a quad of Valve Art 350B tubes only to discover that the stock p.s. could not supply the higher filament draw. I have not changed out my WXT+ ( Blair's #1 tube) in my NS40 and to my amazement this upgraded p.s. has had me listening to some of my fav cds all over again. There has been an appreciable increase in micro detail, the bass is cleaner and the highs are as crisp as I like to hear them. All in all I have been listening to cds and am hearing nuances and detail that I have not heard before. I believe that my recent acquisition of my Tekton Lores, which have been lauded for reproducing musical detail has allowed the improvement in the p.s. to be heard.
My only regret is that I did not order the unit in the full size chassis and with the mahogany wrap to match my amp. Sitting below the NS40 it would have been awesome to look at and hear !!
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I'm glad you like the new power supply. It has amps to spare and is very tightly regulated (AKA: I'd have to say BETTER than a battery). Batteries discharge, meaning the voltage is constantly on a downward spiral once the power switch is turned on..
The enclosures are going to be larger now to improve internal air circulation. If you need a small enclosure, it can still be made.
The new size is 12x10x4 inches (LxWxH)
These supplies can operate multiple Niteshade products at once. Such as: A pair of monos and a preamp or other things. I offer package deals for the DC filament upgrade that uses our 240W power supply.
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I offer package deals for the DC filament upgrade that uses our 240W power supply.
Point of clarification, please.
If an NS amp already has the DC filament upgrade, and the amp owner chooses to purchase the new PS, there would be no need to bundle the PS with the DC filament upgrade - correct?
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That's right. All you would have to do is purchase the power supply and that comes with the cables you need.