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Mini-Torii/DM945's to be picked up early tomorrow! (Read 9331 times)
Fireblade
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A.L.Tennyson

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Re: Mini-Torii/DM945's to be picked up early tomorrow!
Reply #45 - 05/23/12 at 03:09:13
 
The EZ81 replacement has been in the Mini's manual for some time.  The 6N1P-Ev was a surprise to me.
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ZYGI
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Re: Mini-Torii/DM945's to be picked up early tomorrow!
Reply #46 - 05/23/12 at 12:42:38
 
The product page shows a 5U4G rectifier tube......

I did e-mail Steve about that over a month ago.

Either way the Mini-T is a great sounding amp, I've yet to try it with the Trapeziums, have you tried that combo RR?

Zygi
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Rivieraranch
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Re: Mini-Torii/DM945's to be picked up early tomorrow!
Reply #47 - 05/23/12 at 12:57:20
 
Sorry I have not, but just might. With a Big Torii and an SE34I.3 coming in to the stable the MINI might wind up at the office with the TRAPEZIUMS. The MINI was intended as an office amp, come to think of it.
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Les Lammers
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Re: Mini-Torii/DM945's to be picked up early tomorrow!
Reply #48 - 05/23/12 at 16:29:23
 
FB,

The JJ EZ81 just has poor QC from the factory. There is no way that Decware can supply the tubes we will ultimately prefer. Different output tubes can place greater demand on the rectifier and that is what can make the JJ's fail.

FB
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Fireblade
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Knowledge comes, but
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Re: Mini-Torii/DM945's to be picked up early tomorrow!
Reply #49 - 05/23/12 at 17:57:02
 
That has been my point all along, when discussing pros and cons of extreme output tube rolling in another thread.  

Regarding Steve's choices, I prefer using his stock great sounding 'middle of the road' approach tube compliment until I learn more about the different tubes' sound interactions and characteristics.  I trust his ears.

Frankly, I think the most vulnerable area in the M-T is the rectifying circuit.  It caused failure of the original 6 x 4's and it may be now creating failure on the EZ81 replacements.  I think the demands of a true rolling platform design has to have a tradeoff somewhere and it may be that rectifying circuit.  Isolated JJ case or not, this is where one needs to be protected, like you suggested previously, with a reputable (tough) rectifier brand.    

I just think Steve's stock tube compliment set reflects his experience in the tubes' specs and interactions.  The quality control issue in the JJ EZ81 is out of anybody's control.  

BTW, I found McShane's prices in general a little bit on the high side.
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« Last Edit: 05/24/12 at 00:48:10 by Fireblade »  

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Fireblade
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Knowledge comes, but
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A.L.Tennyson

Posts: 702
Re: Mini-Torii/DM945's to be picked up early tomorrow!
Reply #50 - 05/24/12 at 00:53:33
 
I thought I read somewhere in the M-T's literature that the output tubes are the only ones actually heating up in the amp and therefore prone to last somewhat less than all the others.  So maybe the JJ rectifier issues are indeed isolated and a quality control issue only.

BTW, today I can confirm that in my listening room, with the gear just bearly starting to break-in, the speakers sound much better, to my ears at least, when they face straightforwardly (i.e., no toe-in).  There's better stereo separation and more soundstage (although at this early stage soundstage is not a strong point yet).  There's also better frequency separation and detailing, as well as a more natural sound.

The described speakers' orientation demand a relatively higher volume setting to get the same SPL 'sensation' as compared to the traditional toed-in orientation, though.  BTW, I'm keeping the equilateral triangle principle unaffected (I hereby correct part of an earlier statement of mine in this regard), as it is only the orientation I'm changing.  My mistake.
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« Last Edit: 05/24/12 at 01:12:46 by Fireblade »  

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