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04-23-2008, 08:14 PM
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Junior Head-Fi'er
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Join Date: Apr 2008
Posts: 1
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Hello I am new here... I saw this thread and I want to try! Probably I will order the parts now...
I was wondering is this power adapter the one you propose?
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04-23-2008, 08:36 PM
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500+ Head-Fi'er
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Join Date: Mar 2007
Location: Warrensburg, MO
Posts: 520
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This looks tempting. I'm thinking about moving a step up from my PA2v2, would this be a kick in the right direction? It would make for a fun summer project. 
__________________
Grado SR225 w/ Liberators + Flats | Mylarone X3 | Mylarone X3i
Home: Laptop -> M-Audio Transit USB -> PA2V2 -> Grado SR225 + Liberators & TTVJ Flats
On the Go: Creative Zen M: Vision 30GB w/ LOD -> PA2V2 -> Mylarones X3
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04-23-2008, 08:47 PM
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500+ Head-Fi'er
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Join Date: Nov 2006
Posts: 530
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im quite impresed with the performance of this for the price
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04-23-2008, 08:50 PM
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Headphoneus Supremus
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Join Date: Mar 2008
Location: Tulsa, OK
Posts: 2,261
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I don't know about you guys but I have little problem spending 35 dollars on an Epsilon-12 protection circuit as opposed to spending hundreds or more replacing fried headphones for the one time you forget to unplug them first.
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Home: Foobar2000 > Alien USB DAC > CIAudio VHP-1 > Audio-Technica ATH-AD700
Portable: Sony NWZ-A728 > Etymotic Research HF5
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04-23-2008, 09:08 PM
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Headphoneus Supremus
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Join Date: Jun 2007
Posts: 1,618
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.
Last edited by holland; 10-19-2008 at 03:16 AM.
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04-23-2008, 09:43 PM
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Headphoneus Supremus
Member of the Trade
Beezar
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Join Date: Mar 2006
Location: Atlanta
Posts: 5,586
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Quote:
Originally Posted by synaesthetic
I don't know about you guys but I have little problem spending 35 dollars on an Epsilon-12 protection circuit as opposed to spending hundreds or more replacing fried headphones for the one time you forget to unplug them first.
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Well - I didn't think about it, but Pete brings up a great point: apparently, it takes awhile for the MOSFET to start conducting anyway.
Holland has a good point, too - you may have to come up with a separate power supply just to use the e12. 
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04-23-2008, 09:47 PM
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Headphoneus Supremus
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Join Date: Mar 2008
Location: Tulsa, OK
Posts: 2,261
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Oh I am intending to use the circuit in my SOHA build, not in this particular design.
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Home: Foobar2000 > Alien USB DAC > CIAudio VHP-1 > Audio-Technica ATH-AD700
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04-23-2008, 09:47 PM
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Headphoneus Supremus
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Join Date: Jan 2006
Location: The 'Haute, IN / Milan, OH
Posts: 2,445
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I've got an old electronics box that had tube sockets in it already.. not the right kind though. I've discarded all the old stuff, but the tube holes are too big for the new sockets 1 5/32 inches vs the necessary 5/8 inches. How would you suggest mounting the sockets in such a way as to avoid drilling new holes?
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04-24-2008, 01:32 AM
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Headphoneus Supremus
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Join Date: Mar 2008
Location: Tulsa, OK
Posts: 2,261
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Quote:
Originally Posted by fault151
Huh, how will i ever live with the ball ache of having to unplug my headphones before turning the power off?  |
It's not that it's a bother to unplug them, but if you forget even once it's bye-bye headphones. =/
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04-24-2008, 01:39 AM
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Headphoneus Supremus
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Join Date: Sep 2006
Location: Califon, NJ
Posts: 1,924
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Any way to make that not happen?
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04-24-2008, 02:02 AM
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100+ Head-Fi'er
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Join Date: Feb 2007
Location: Portland, OR
Posts: 328
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Quote:
Originally Posted by malldian
Any way to make that not happen?
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Something like this would have to be implemented The ε12 Muting / Protect Circuit
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04-24-2008, 04:39 AM
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Head-Fi'er
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Join Date: Feb 2002
Location: Dallas, Texas
Posts: 82
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Quote:
Originally Posted by synaesthetic
It's not that it's a bother to unplug them, but if you forget even once it's bye-bye headphones. =/
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Have you ever actually killed a pair of headphones? It's pretty hard to do.
I've done a lot of very bad things to many pairs, and so far only fried one pair of Grados.
I can say for certain that they won't stand 300VDC.
Pete
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04-24-2008, 04:48 AM
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1000+ Head-Fi'er
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Join Date: Dec 2003
Location: Seattle
Posts: 1,321
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Quote:
Originally Posted by bperboy
but the tube holes are too big for the new sockets 1 5/32 inches vs the necessary 5/8 inches. How would you suggest mounting the sockets in such a way as to avoid drilling new holes?
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There are "hole shrinkers" available, often at places that sell tubes and tube sockets. They look like trim rings but fit a specific size (and the result is a smaller specific size.) haven't seen any for a while, but then I haven't been looking!
EDIT: Gah. Tried to go look for some but only came up with one good reference at v4tc in China:
Audio Catalog
Admittedly, though, these are tres sexy! I've dealt with him before and things do arrive...no worries!
Last edited by bhjazz; 04-24-2008 at 05:03 AM.
Reason: ra de pukkany, rum ping tu!
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04-24-2008, 05:14 AM
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500+ Head-Fi'er
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Join Date: Aug 2007
Location: Left of Center
Posts: 615
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this is so cool.
does anyone know of any places to source these parts in Asia, or is overseas shipping from Mouser still the best bet?
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"And what is good Phaedrus, and what is not good... Need we ask anyone to tell us these things?" -Plato
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04-24-2008, 06:08 AM
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1000+ Head-Fi'er
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Join Date: Dec 2003
Location: Seattle
Posts: 1,321
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Regarding the Cisco power supply: specs on it look like 48V @ 0.38A. Should that PS be difficult to source (well, just in case...) would a 48V supply be okay @ 1A? 2A?
And, just to be sure: the Cisco is an AC/DC supply, is that correct? Pete's webpage describes the tubes as running on 19VDC.
Thanks!
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