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12-29-2008, 03:34 PM
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Head-Fi'er
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Join Date: Jun 2008
Location: Trieste,Italy
Posts: 83
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Here are some photos:
In the future the PSU will go in the case under and the rest in the upper.Hopefully the tubes will go outside a bit so i can see them glow 
Sorry i don't have time to post some pictures of open units but when i return from holidays i will post them.
The CD player Lampizator mod and some of my inventions.For now it's ugly as hell but when i build a new case and suspend the CDM2 on ropes......
__________________
Home-Yaqin mc84l,Pionner Turntable,equalizer,tape player,Akai cd-player (lampizator mod),Olivia Chang horns;
Marantz CD75 transport,Zero DAC lampizator mod,Stax SRM-3,diy KGSS(in construction),SRM-1 Mk2 P.P.,Lambda Nova Classic,KOSS ESP950 modded,Omega II Mk1;
On the move-Cmoy Opa2227,Total Airhead,IPod 160Gb,Senn PXC 350,Senn PX100,Shure SE420.
Aptoscopium project:
www.os4db.webs.com
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01-14-2009, 11:48 AM
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1000+ Head-Fi'er
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Join Date: Aug 2006
Location: Sweden
Posts: 1,026
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Do removing the two small brown caps beside the RCA out increase the treble? I've have not done it yet because of fear that the sound will be too treble oriented and harsh(K501 and RS1 are a bit treble heavy already).
EDIT: Read here: http://www.head-fi.org/forums/blogs/...amplifier.html
that this is the case. Guess I won't remove them.
__________________
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H X-fi XtremeMusic -> ASIO -> Optical -> Zero dac (OPA-Earth) -> Zero internal amp -> RS1 "brown headband" / HD600 '02 / K501 .v1 / HF-2
P Cowon D2 - Head-Direct RE0
Other Fiio portable amp / Playstation SCHP-1002
Gone: DT990 '05 32ohm, HD650 with Oehlbach cable / Meier Corda Headfive / MS2i / DT880 '05 250ohm / RS1 "buttonless" '08 / LD MKIII / Audio-Technica ATH-AD2000
------------------------------------------------
Spotify
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01-15-2009, 08:22 PM
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Headphoneus Supremus
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Join Date: Feb 2008
Location: GreaterTorontoArea in Sub-Urbaine hell
Posts: 3,081
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Nice job greeno153 !!!
Gotta love the different variations members come up with. I'd like to try the Lampy Valve mod myself...I need another Zero for that...maybe a Hybrid FrankenLampy of a sort ....hey that's not a half bad idea.....
Henmyr...I'd say try the removal of them (lift one leg from the board carefully using a fine point soldering iron) and if you don't like it then put them back in...for bright cans you may be better off leaving them in or better yet replace them with some nice silver mica types (anything from 22 to 100 pf >50V will be fine )....a 1 dollar mod
Peete.
__________________
Cans :HD650, AKG 240M (HD650 DIY cables SE and Balanced)
Desktop amps : LD MK III (6H30P-i DR's + DIY mods, Jaycar DIY kit amp (major DIY mods), 2 X Audio-gd Compass (test prototype,final version), Audio-gd C-2C W/ Stepped pot Upgrade, Audio-gd Phoenix SS balanced preamp/headamp.
Transports: Auzen Prelude PCI 7.1 SC/ASIO native driver using Media Monkey (all EAC ripped FLAC/Wav), Vanguard CDM12 Pro (BNC mod), HK HD720 (completely upgraded), Audio-gd CD7 Transport.
Sources: FrankenDAC DIY 24/192 dac (HDAMs/Teflon/PIO cap mod), Compass DAC, See Corp Vintage UK TT(Mission arm/Ortofon OM20S MM cart), Yaqin MS12B tube phono preamp, TEAC V530X Tape deck, Audio-gd Reference 1 DAC. C2C DIY pot mod http://www.head-fi.org/forums/f6/ste...1/#post5846722
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01-21-2009, 10:57 PM
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Head-Fi'er
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Join Date: Jun 2008
Location: Trieste,Italy
Posts: 83
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Thnx,im now on opa637 my tubes fried
 (( ,expecting new ones from russia 6n3p-dr in two weeks...
lampy is great but i will have to build his tube stage because mine has less focus than with the opamp but the stage is bigger....so will see maybe the new tubes
__________________
Home-Yaqin mc84l,Pionner Turntable,equalizer,tape player,Akai cd-player (lampizator mod),Olivia Chang horns;
Marantz CD75 transport,Zero DAC lampizator mod,Stax SRM-3,diy KGSS(in construction),SRM-1 Mk2 P.P.,Lambda Nova Classic,KOSS ESP950 modded,Omega II Mk1;
On the move-Cmoy Opa2227,Total Airhead,IPod 160Gb,Senn PXC 350,Senn PX100,Shure SE420.
Aptoscopium project:
www.os4db.webs.com
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01-21-2009, 11:06 PM
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Headphoneus Supremus
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Join Date: Feb 2008
Location: GreaterTorontoArea in Sub-Urbaine hell
Posts: 3,081
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Always trade offs with every mod....tube type may change that focus somewhat. Maybe some Telefunken or Siemens tubes will recover that detail while retaining the large sound stage...experiment a little with output stage coupling + bypass caps while your at it.
Peete.
__________________
Cans :HD650, AKG 240M (HD650 DIY cables SE and Balanced)
Desktop amps : LD MK III (6H30P-i DR's + DIY mods, Jaycar DIY kit amp (major DIY mods), 2 X Audio-gd Compass (test prototype,final version), Audio-gd C-2C W/ Stepped pot Upgrade, Audio-gd Phoenix SS balanced preamp/headamp.
Transports: Auzen Prelude PCI 7.1 SC/ASIO native driver using Media Monkey (all EAC ripped FLAC/Wav), Vanguard CDM12 Pro (BNC mod), HK HD720 (completely upgraded), Audio-gd CD7 Transport.
Sources: FrankenDAC DIY 24/192 dac (HDAMs/Teflon/PIO cap mod), Compass DAC, See Corp Vintage UK TT(Mission arm/Ortofon OM20S MM cart), Yaqin MS12B tube phono preamp, TEAC V530X Tape deck, Audio-gd Reference 1 DAC. C2C DIY pot mod http://www.head-fi.org/forums/f6/ste...1/#post5846722
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01-24-2009, 09:08 PM
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Junior Head-Fi'er
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Join Date: Dec 2008
Posts: 4
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Hello,
i see this thread is mostly about the audio (analog) part of Zero, has anybody dwelled into the digital circuits ? I am thinking about doing something about the annoying relay clicks whenever i pause the sound source. Anybody knows whether the relays are controlled from the CPU (89c4051) or the spdif decoder chip? (the D/A chip has also outputs for signal detection, but they doesn't seem to be connected to anything)
Edit: And they are indeed controlled from the microcontroller. Schema i traced for anyone interested: http://napalm.sf.cz/tmp/digitalpart.png
Last edited by fermentol; 01-25-2009 at 10:11 PM.
Reason: added schema
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01-24-2009, 09:32 PM
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500+ Head-Fi'er
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Join Date: Oct 2008
Location: California
Posts: 734
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Could someone help me troubleshoot my dead Zero? I don't see anything burnt out or anything but it stopped powering on for some reason. I THINK it's the power supply, but I can't tell since I haven't been interested in DIY until a few days ago.
__________________
Current Equipment:
-Computer>>>FLAC>>>X-Fi Platinum Fatality Pro>>>Outlaw Audio 990>>>Heed Canamp>>>K701 or CMT-340SE via Outlaw Audio M2200 and Mirage LF-150
-TV>>>BGW 750C>>>SDA SRS 2
-24GB Sansa Fuze>>>FLAC>>>HFI-780 or Swan M200MKII
-Desktop Cmoy, <With My Sister> HARX900, depodded iM716, Swan D1080MKII, Behringer MS40, 2G iPod Nano </WMS>
- <With My Friends> Polk Audio Monitor 10B via GFA-555II, SDA 2A, Adcom GDA-700, AD700, AudioEngine A2, Energy ESW8 <WMF>
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01-30-2009, 01:46 PM
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Junior Head-Fi'er
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Join Date: Dec 2008
Posts: 4
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Following my previous post, tying the output relay to Vcc (with resistor for good measure) prevents it from disengaging, thus eliminates the clicking. It's kind of weird design anyway, as the relay controlls only the output RCA sockets. The opamp and whole headphone amp section is still connected to the D/A output regardless of digital signal lock and so is unaffected by this mod anyway.
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02-10-2009, 05:47 PM
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Junior Head-Fi'er
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Join Date: Feb 2009
Posts: 8
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Hey guys I just got my HDAM and was wondering if this is an acceptable installation. The extension is really hard to control in that it bend how I would like so i have to route it around as you can see. If this is not a good idea or if you would like to see it from a different angle please let know, thanks!
Last edited by richardh123; 02-10-2009 at 07:38 PM.
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02-21-2009, 06:19 PM
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100+ Head-Fi'er
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Join Date: Dec 2008
Location: In moshpits
Posts: 460
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Quote:
Originally Posted by richardh123
Hey guys I just got my HDAM and was wondering if this is an acceptable installation. The extension is really hard to control in that it bend how I would like so i have to route it around as you can see. If this is not a good idea or if you would like to see it from a different angle please let know, thanks!
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I do not have a Zero or the HDAM but I'm pretty sure you need to ground the HDAM to the ground on the RCA Input as shown in previous pages of the thread.
__________________
Baird GoW Head-Fi Feedback 949Audiophile's (Baird GoW) Ebay Feedback
Home Rig (Headphone):Foobar2000 FLAC->ASIO->Auzentech Prelude->Digital Optical Ccable->Audio- GD Compass (Sun, Moon)->Ultrasone HFI-780 or Audio Technica ATH-AD700
Home Rig (Speaker): Foobar2000 FLAC->ASIO->Auzentech Prelude->Digital Optical cable->Audio GD compass (Sun, Moon)->Undecided->Monoprice 12 AWG speaker cable->Energy RC-10
Mobile Rig (Headphone): Laptop Foobar2000 FLAC -> AISO -> Neuforce Icon Mobile -> Audio Technica ATH-AD700, Ultrasone HFI-780 or Denon AH-C751
Portable (Headphone):IPod 5th Gen 30GB -> DIY Ipod LOD (exact same parts as ALO) -> Neuforce Icon Mobile -> Ultrasone HFI-780 or Denon AH-C751
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02-24-2009, 03:19 AM
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100+ Head-Fi'er
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Join Date: Aug 2008
Location: MI, US
Posts: 304
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I most likely broke the receiver chip of my Zero connecting the zero to my Xbox 360. It was working at first, but I think after I reset my Xbox it went off Digital Stereo back to dolby and killed it.
Getting no noise via optical or coaxial to the headphone out. Its not the cable or my Laptop since both work with my speaker receiver.
Leaving the Zero unplugged for a whole day, and then testing it did nothing. Reset button did nothing.
What do I do? yelp!
__________________
My Hfi Feedback. Ebay buyer feedback.
Headphones:
JVC HP-DX1000, <---(Darkvoice 336i)<--RCA-to-RCA<---X-Fi external RCA line-out<--USB<--Laptop (foobar2k)
Triple-fi/ESW10jpn <---Pico/Lyrix amp, <--ALO-CSX LOD<--Ipod 5.5G(Rockbox'd)
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