Pencil 10P's / 2 watts tube - diyAudio
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Old 16th March 2014, 07:11 PM   #1
opa1 is offline opa1  United States
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Default Pensil 10P's / 2 watts tube

I'm building the Pensils/10P's. I have a Decware Zen Clone I built from their schematics using Edcor Iron. My listening room is small 11.6L x 9.5W x 8tall. I only listen at low volumes. Will the two watts be enough for the 10P's at low volume? I like tube SQ but, I can use class D also.

I'm also looking to buy a new preamp & amp. So I'm open to suggestions if the Zen is marginal.

Thanks,
Mark
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Last edited by opa1; 26th March 2014 at 05:06 AM.
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Old 16th March 2014, 08:10 PM   #2
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Only you willknow when you fire them up.

With the Edcor iron your amp will be better into higher impedances than the Decware. In a small room at lowlevels it is likely sufficient.

If the <2 W is insufficient you can approximately double that by wiring the EL84 in pentode and apply Scade/RH84 style feedback. That and using all Solen poly caps in the power dupply made big improvements in the SE EL84 journey we started with a Decware clone.
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Old 16th March 2014, 09:30 PM   #3
opa1 is offline opa1  United States
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Thanks! The edcors have center taps so I could go UL too.
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Old 16th March 2014, 10:09 PM   #4
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I have run a home built el84 trioded se (3 watts) into A10p's MLTL in my 14 by 20 room and it played quite loud!

Larry
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Old 17th March 2014, 03:50 PM   #5
chrisb is offline chrisb  Canada
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nice build on the ZenClone - for the size of room described, I think you'll get lots of enjoyment once amp and speakers are fully broken in.

tell us about the barbells?

As to pre-amp - what will the source(s) be? If mostly digital there are some pretty decent (& incredibly convenient) DAC-pre combos to be had - otherwise how about something like the Grounded Grid?
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Old 17th March 2014, 04:39 PM   #6
opa1 is offline opa1  United States
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The barbells are for me to get my strength up. Really there for the spikes/stands. Not sure I'll use them. Well see after I router the edges.

I built the amp last year. I'm using MLTL's with BetsyK's, alignment by GM/MJK right now. I expect a big improvement in SQ with the 10P's.

I run source direct on the CDP. For my vinyl, I use a CNC phono stage that's battery powered. I haven't tried the system with my PC, Modi dac.

Mark

Here's the phono stage. Made to match amp.
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Old 18th March 2014, 12:36 AM   #7
Bigun is offline Bigun  Canada
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I think it will be just fine, in fact I think you'll find it will be fantastic!
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Old 18th March 2014, 08:11 PM   #8
StevenZ is offline StevenZ  United States
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Subscribed. Looking forward to your listening impressions, Mark.
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Old 18th March 2014, 09:57 PM   #9
opa1 is offline opa1  United States
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I'm excited. Have to get to work and build the cabs. Sanded the edges today. Sure is nice with the CNC cuts!

Mark
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Old 19th March 2014, 08:58 PM   #10
opa1 is offline opa1  United States
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One down, one to go. The CNC cut flat pack sure makes for a quick assembly.
Have the 10p's sitting in their shipping boxes burning in. I tried the Zen and it's going to work great. I have a TPA3116 running 24/7 with them now. Gotta save the tubes.

Thanks out to StevenZ for the CNC flat pack and introducing me to the MarkAudio drivers. I should of done this along time ago.

Mark
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