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The Christmas comes early mod! (Read 58883 times)
Steve Deckert
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The Christmas comes early mod!
06/02/09 at 05:08:01
 
The CCE mod is now available for all Decware amplifies that use EL34's or SV83's (aka 6P15P-EV)

http://www.decware.com/newsite/paper145.htm

This is big news... If you love your Zen amp, and your ears are dialed into it, this will frankly blow you mind.  You'll shake your head for at least a year, every time you listen to it.  It improves the power, improves the punch, improves the midrange, basically it improves everything.

Steve Smiley
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mike_gagne
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Re: The Christmas comes early mod!
Reply #1 - 06/02/09 at 09:13:31
 
Steve, will this become a feature of your Zkit line also?
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Jeff
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Re: The Christmas comes early mod!
Reply #2 - 06/02/09 at 15:46:26
 
does this mod apply to the taboo also?
would i still be able to use el84 tubes?
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michkhol
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Re: The Christmas comes early mod!
Reply #3 - 06/03/09 at 20:00:30
 
Steve,

could you publish the phase response (as a function of frequency) of the amplifier before and after the mod?

thanks.
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Steve Deckert
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Re: The Christmas comes early mod!
Reply #4 - 06/03/09 at 23:14:15
 
Mike,

Not sure on the ZKIT1 and ZKIT2.  I may add the option to both boards when I run out of the ones I have.  However it's not hard to modify the existing boards.

Jeff,

The mod will work on the Taboo if you use the 6P15P-EV tubes.  When EL84's are used it will sound exactly the same as it does now.  This is also true with the SE84C family of amps.

Michkhol,

Yea, I could do that next time we check one.

-Steve
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Brett
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Re: The Christmas comes early mod!
Reply #5 - 06/05/09 at 20:01:34
 
Steve,

For us SE84 kit owners, is there a particular value of film cap we should use?

Thanks,

-Brett
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Steve Deckert
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Re: The Christmas comes early mod!
Reply #6 - 06/05/09 at 21:26:15
 
Use a 0.1uf 400V polyester film
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Brett
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Re: The Christmas comes early mod!
Reply #7 - 06/06/09 at 00:35:24
 
Well the mod is a success. I've had my Zen for many years now, and it has never ceased to impress how high it's fidelity can get within reasonable means. This tweak has brought this amp to another level, and it's exciting to think that it can be done without raising the cost much. Thanks to Mr Hazen and Mr Deckert for discovering yet another way to make these unassuming amps embarrass expensive gear.

The word 'bloom' keeps coming up in my mind. Dynamics are improved by a large degree. Everything is now more distinct in the separations of instruments in the image, and subtle textures in voices and recording effects. Everything sounds fuller as music surrounds your area with more presence.

It absolutely sounds more pleasant to the ear. The speakers do seem to be disappearing more and a sibilance noticeable on certain albums has smoothed out revealing more details in the mix.

Bass is also more detailed and is finding perfect balance with the rest of the spectrum.

For such a subtle change to the circuit, the effect is really quite surprising. I'm finding it really easy to switch off critical thought and take in the recordings. It's a very inviting presentation.

I have already upgraded to V-Caps, and I would say this is easily as beneficial if not more. Like the V-Caps, it enhances every aspect of the amp without losing any of it's best qualities.

The upgrade is certainly worth the asking price. And considering all those used zen amps out there, offering a lifetime warranty along with the upgrade is a sweet deal.

-Brett
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d_zoolander
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Re: The Christmas comes early mod!
Reply #8 - 06/07/09 at 04:11:00
 
Steve
In Taboo schematics, I see the the suppressor grid connected to the cathode. Is this internally connected? Because, I see nothing connected to pin 6 inside the amp (pin 6 is the suppressor grid I believe?).

Thanks

Derek
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Modded Squeezebox , Monica 3 DAC, Burson Buffer, CSP, Taboo, MG944, Tripp Lite Isolation xfrmrs, Signal Cable ICs
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Steve Deckert
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Re: The Christmas comes early mod!
Reply #9 - 06/08/09 at 02:31:01
 
In the Taboo schematic an EL84 is used, which is internally connected.  As we all know, a 6P15P-EV also works in the Taboo.  

-Steve
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d_zoolander
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Re: The Christmas comes early mod!
Reply #10 - 06/08/09 at 03:41:00
 
So when 6p15p-EV is used, the suppressor grid is 'floating'?

Thanks
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proud_indian
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Re: The Christmas comes early mod!
Reply #11 - 06/08/09 at 05:55:54
 
Steve,

You said this mod can be done at your place. For guys like us, who cannot send the gear to you, what are the available options? Any form of a DIY or something?

shreekant Smiley
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Lon
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Re: The Christmas comes early mod!
Reply #12 - 06/08/09 at 11:12:08
 
Also Steve, See Shreekant's question in the ZKit 5 forum. . . . Thanks.
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« Last Edit: 06/08/09 at 12:14:03 by Lon »  

Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
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Steve Deckert
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If the 1st watt
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Re: The Christmas comes early mod!
Reply #13 - 06/09/09 at 15:30:01
 
zoolander, yes the suppressor grid is floating.

proud_indian,  connect a 0.1uf 400V polyether cap between pins 3 and 6 of both output tubes.

lon, answered it on audiophiletalk since he posted it there first.
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Lon
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Re: The Christmas comes early mod!
Reply #14 - 06/09/09 at 15:30:55
 
Thanks, I didn't see that because I'm no longer going to post at that place.
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