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[Official] OCN Headphones and Earphones Club - Page 2483

post #24821 of 38574
Quote:
Originally Posted by friend'scatdied View Post

Was it Justin?

He's going through finishing and shipping a huge batch of BHSEs (backlog of orders as early as 18 months ago), so I can imagine he's pretty stressed.

Plus it was a 5 hour drive. Sooooooooooooo yeah. I am sure he was not in the social mood.
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post #24822 of 38574
Quote:
Originally Posted by Tjj226 Angel View Post

.................Ok so here is the thing. The K amp was not designed for a particular tube, it was designed to use a power pentode (further more it could very well be a pentode strapped in triode mode, but I am not sure). The designer did not sit there and say "geee I think I am going to use a psvane EL34 for this amp". That would be stupid and rather pointless.

Besides, I am not entirely sure the EL34 is what the designer was using to begin with.

Which "K" amp are you referring to?

KG definitely intended his BH designs to be used with EL34s (visibly written in every schematic available, including his hand-drawn ones). EL34 is standard and considered the optimal pentode for the circuit.
Edited by friend'scatdied - 4/22/14 at 11:45am
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post #24823 of 38574
Quote:
Originally Posted by OC'ing Noob View Post


The O2 is not stupid, just that the designer some design decisions based on portability as the O2 was not supposed to be a desktop amp. That would have been the ODA, but the designer disappeared before getting that far.

But from his latest ODA post before he got hit by a bus, he didn't feel that the desktop variant would be THAT much better of a performer.

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post #24824 of 38574
Quote:
Originally Posted by friend'scatdied View Post

Which "K" amp are you referring to?

KG definitely intended his BH designs to be used with EL34s (visibly written in every schematic available, including his hand-drawn ones). EL34 is standard and considered the optimal pentode for the circuit.

KGBH

Hmmmm yeah....sure...fine. And I can just as easily erase the EL34 on the schematic and write in KT77. It would not make much difference.

As for being the "optimal pentode"..........well I really do not care. They sound like crap, and the weird tubes Justin uses sound nice. That is all I need to know.
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post #24825 of 38574
To clarify what I mean about the O2 is that it's a wonderful design that's been poorly adapted. A slightly larger enclosure would allow the use of wires to move each port and jack to where it should be.

I wanted a good O2/ODAC combo, that's why there would be USB.

My first project will probably be modifying my ASL MG Head.
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post #24826 of 38574
Quote:
Originally Posted by Darkwizzie View Post

But from his latest ODA post before he got hit by a bus, he didn't feel that the desktop variant would be THAT much better of a performer.

Of course that would be the case. Not sure why anyone would think otherwise, unless they completely misunderstood the intent of ODA. ODA was supposed to be built off the O2 design, just into a desktop amp design as opposed to a portable amp design. The O2 was intended to be a portable amp, that's why it runs on batteries and has a "smaller" footprint compared to other actual desktop designs. The ODA was not supposed to change that core amp design, just offer a desktop design where you have things like multiple outputs (RCA for example), more cables in the back, no batteries, ect. Basically, think of it as a more powerful O2 with more options.
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post #24827 of 38574
Quote:
Originally Posted by OC'ing Noob View Post


Of course that would be the case. Not sure why anyone would think otherwise, unless they completely misunderstood the intent of ODA. ODA was supposed to be built off the O2 design, just into a desktop amp design as opposed to a portable amp design. The O2 was intended to be a portable amp, that's why it runs on batteries and has a "smaller" footprint compared to other actual desktop designs. The ODA was not supposed to change that core amp design, just offer a desktop design where you have things like multiple outputs (RCA for example), more cables in the back, no batteries, ect. Basically, think of it as a more powerful O2 with more options.
I hope he pops back up and finishes the ODA!
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post #24828 of 38574
Quote:
Originally Posted by phillyd View Post

To clarify what I mean about the O2 is that it's a wonderful design that's been poorly adapted. A slightly larger enclosure would allow the use of wires to move each port and jack to where it should be.

I wanted a good O2/ODAC combo, that's why there would be USB.

My first project will probably be modifying my ASL MG Head.

They are not allowed to change the design, so until the ODA is designed by the creator, you will have to look for DIY O2 for what the features you want unfortunately.
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post #24829 of 38574
Quote:
Originally Posted by phillyd View Post


I hope he pops back up and finishes the ODA!

 

 

Quote:
Originally Posted by OC'ing Noob View Post


They are not allowed to change the design, so until the ODA is designed by the creator, you will have to look for DIY O2 for what the features you want unfortunately.

Something that might interest both of you then:

 



http://www.diyaudio.com/forums/headphone-systems/229934-version-o2-desktop-amp-oda.html

I asked whether this is allowed and the reply was:

Quote:
 Good question. That issue came up back in post #97 with a post from John at JDS Labs. A discussion ensued for several posts after that. I wound up researching the issue, and several folks who were lawyers and legal students in different countries even PM'ed and emailed me with some thoughts..

In the end the consensus was that this design was too different to be considered a "derivative" of the O2 by the legal tests. Much of the O2's design would also be considered "prior art" that was already in the public domain too. For an amp design that probably would be considered a "derivative" take a look at the O3 project I was pondering a while back, essentially a surface mount O2 in a case that was more pocketable (longer and skinnier):

An "O3" - 35% smaller SMD RS O2 headphone amp version

In addition to the license issue, I mainly abandoned that one becauuse the Hammond case turned out to be just 1/2" too short to use board-mounted 9V battery clips.

And in the associated legal issue of what happens to a license when the licensee disappears and is no longer contactable for a license release, in several countries outside the US there are apparently laws that say after a year or two of non-contactability the license reverts back to the public domain. So it is highly likely that in some countries the O2's license has already reverted to the public domain just due to NwAvGuy's disappearing. Here in the US apparently the law regarding that is a mess, and it is possible someone could suddenly re-appear years later and re-assert rights, from my understanding of it. 

I try to refer to the amp as "my version" of an ODA, just out of respect for NwAvGuy's work since we will never really know what "the" ODA would have been. 

Edited by Darkwizzie - 4/22/14 at 1:04pm
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7600k @ 5.197/1.392 1.392v z170 Asus Hero EVGA 1080ti SC Black (2100/6250) x2 8gb GSkill Trident Z 3600 @ 3804 15-15-15-32-2T 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro 512gb (Undelwalt) WD Red 2tb (Pack Yak II) Seagate Expansion Drive 5tb (Phoenix Down II) 3x560mm HardwareLabs Nemesis GTX 
CoolingCoolingCoolingCooling
XPSC Raystorm Pro Watercool Heatkiller 1080ti Full Cover Waterblock EK XTOP Revo Dual D5 (Serial, PWM, v4) EK ZMT (1/2 - 3/4 ID OD) 
CoolingCoolingCoolingCooling
14xEK ACF (Compression Fittings) EK x4 250 (v2) Distilled Water + PT Nuke (Copper Sulphate) 24x140mm Silent Wings 3 
OSMonitorKeyboardPower
Windows 10 Pro 64bit Catleap 27 Inch 2560x1440 IPS 60hz Display Coolermaster Storm Trigger (Brown Switches) EVGA P2 1000w 
CaseMouseMouse PadAudio
Corsair Air 540 Logitech G Pro Tek Syndicate "Raze the World" Desk Mat O2 + Odac by Mayflower Electronics (Rev A) 
AudioAudioAudioAudio
Sennheiser HD 800 2xKrk Rokit 6 G2 Blue Yeti (Grey) Rode PSA-1 Arm 
Other
Aquaero 6 LT + Aluminum Heatsink 
CPUMotherboardGraphicsRAM
i5 6600k Delid @ 4.848/4.848 Asus z170 Hero MSI GTX 980ti @ 1499/4082 1.25v/134% Power 2 x 8gb Gskills Ripjaws V 3131 16-16-16-32 
Hard DriveHard DriveHard DriveHard Drive
Samsung Pro Series 840 256gb (Celapaleis) 1 TB Samsung Drive (Pack Yak) Samsung Pro Series 850 256gb (Celapaleis Reprise) Phoenix Down (External Backup) 
CoolingCoolingOSMonitor
Noctua D14 Kraken x61 Push-Pull for GPU Windows 10 Pro Catleap 2560x1440 @ 60hz 
KeyboardPowerCaseMouse
CM Storm Trigger Brown Switches EVGA Supernova 1000w P2 Corsair 540 Air Razer Abyssus 
Mouse PadAudioAudioAudio
Steelseries QcK Mini Blue Yeti Microphone Objective Dac + Amp Sescom AB Switch 
AudioAudioAudioAudio
Krk Rokit 6 G2 x2 Radioshack Ground Loop Isolator (For Rokits) Wooaudio Aluminum Headphone Stand Sennheiser HD 800 
AudioOther
Logitech c920 Webcam NZXT Sentry Mix 2 Fan Controller 
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Undelwalt (2017)
(29 items)
 
 
Celapaleis (2013)
(16 items)
 
CPUMotherboardGraphicsRAM
7600k @ 5.197/1.392 1.392v z170 Asus Hero EVGA 1080ti SC Black (2100/6250) x2 8gb GSkill Trident Z 3600 @ 3804 15-15-15-32-2T 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro 512gb (Undelwalt) WD Red 2tb (Pack Yak II) Seagate Expansion Drive 5tb (Phoenix Down II) 3x560mm HardwareLabs Nemesis GTX 
CoolingCoolingCoolingCooling
XPSC Raystorm Pro Watercool Heatkiller 1080ti Full Cover Waterblock EK XTOP Revo Dual D5 (Serial, PWM, v4) EK ZMT (1/2 - 3/4 ID OD) 
CoolingCoolingCoolingCooling
14xEK ACF (Compression Fittings) EK x4 250 (v2) Distilled Water + PT Nuke (Copper Sulphate) 24x140mm Silent Wings 3 
OSMonitorKeyboardPower
Windows 10 Pro 64bit Catleap 27 Inch 2560x1440 IPS 60hz Display Coolermaster Storm Trigger (Brown Switches) EVGA P2 1000w 
CaseMouseMouse PadAudio
Corsair Air 540 Logitech G Pro Tek Syndicate "Raze the World" Desk Mat O2 + Odac by Mayflower Electronics (Rev A) 
AudioAudioAudioAudio
Sennheiser HD 800 2xKrk Rokit 6 G2 Blue Yeti (Grey) Rode PSA-1 Arm 
Other
Aquaero 6 LT + Aluminum Heatsink 
CPUMotherboardGraphicsRAM
i5 6600k Delid @ 4.848/4.848 Asus z170 Hero MSI GTX 980ti @ 1499/4082 1.25v/134% Power 2 x 8gb Gskills Ripjaws V 3131 16-16-16-32 
Hard DriveHard DriveHard DriveHard Drive
Samsung Pro Series 840 256gb (Celapaleis) 1 TB Samsung Drive (Pack Yak) Samsung Pro Series 850 256gb (Celapaleis Reprise) Phoenix Down (External Backup) 
CoolingCoolingOSMonitor
Noctua D14 Kraken x61 Push-Pull for GPU Windows 10 Pro Catleap 2560x1440 @ 60hz 
KeyboardPowerCaseMouse
CM Storm Trigger Brown Switches EVGA Supernova 1000w P2 Corsair 540 Air Razer Abyssus 
Mouse PadAudioAudioAudio
Steelseries QcK Mini Blue Yeti Microphone Objective Dac + Amp Sescom AB Switch 
AudioAudioAudioAudio
Krk Rokit 6 G2 x2 Radioshack Ground Loop Isolator (For Rokits) Wooaudio Aluminum Headphone Stand Sennheiser HD 800 
AudioOther
Logitech c920 Webcam NZXT Sentry Mix 2 Fan Controller 
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post #24830 of 38574
The Skullcandy Aviators are $40 used now. That's a pretty good buy and after trying them today I was impressed. They're bad at the $150 or even $100 price mark, but for $40 bucks they look great and have solid overall sound. Nice sparkly treble, but not harsh. Surprisingly flat but well extended bass and a shockingly natural mid-range.

Anybody else tried these?
Ryzen & Vega
(22 items)
 
Wanted: [Wanted] LGA1155 ITX Motherboard
$75 (USD) or best offer
The Spectre
(28 items)
 
CPUMotherboardGraphicsRAM
[AMD] Ryzen R7 1700 w/EK Supremacy Evo AMD [MSI] X370 XPower Gaming Titanium [AMD] Vega Flagship GPU [G.Skill] Trident Z RGB 2x8GB @3000MHz 
Hard DriveHard DriveCoolingCooling
500GB M.2 SSD [WD] 2TB Black HDD [NZXT] AER RGB 120 (x7) [NZXT] AER RGB 140 (x1) 
CoolingCoolingCoolingCooling
[Barrow] D5 Heatsink/Reservoir/Heatsink [Barrow] White 1/2"x3/4" Compression Fittings [Primochill] Advance LRT Clear 1/2"x3/4" Tubing [Alphacool] NexXxos XT45 360mm 
CoolingOSMonitorKeyboard
[Alphacool] NexXxos Monsta 240mm [Microsoft] Windows 10 Pro x64 [ASUS] MG279 Freesync 1440p IPS [Razer] BlackWidow X Tournament Edition w/Vorte... 
PowerCaseMouseMouse Pad
[Corsair] RM850i w/custom cables [Phanteks] Enthoo Evolv ATX Tempered Glass [Razer] Deathadder Elite [Corsair] MM300 Extended 
AudioOther
(See audio in signature) [Ikea] Tornliden Desk 
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Ryzen & Vega
(22 items)
 
Wanted: [Wanted] LGA1155 ITX Motherboard
$75 (USD) or best offer
The Spectre
(28 items)
 
CPUMotherboardGraphicsRAM
[AMD] Ryzen R7 1700 w/EK Supremacy Evo AMD [MSI] X370 XPower Gaming Titanium [AMD] Vega Flagship GPU [G.Skill] Trident Z RGB 2x8GB @3000MHz 
Hard DriveHard DriveCoolingCooling
500GB M.2 SSD [WD] 2TB Black HDD [NZXT] AER RGB 120 (x7) [NZXT] AER RGB 140 (x1) 
CoolingCoolingCoolingCooling
[Barrow] D5 Heatsink/Reservoir/Heatsink [Barrow] White 1/2"x3/4" Compression Fittings [Primochill] Advance LRT Clear 1/2"x3/4" Tubing [Alphacool] NexXxos XT45 360mm 
CoolingOSMonitorKeyboard
[Alphacool] NexXxos Monsta 240mm [Microsoft] Windows 10 Pro x64 [ASUS] MG279 Freesync 1440p IPS [Razer] BlackWidow X Tournament Edition w/Vorte... 
PowerCaseMouseMouse Pad
[Corsair] RM850i w/custom cables [Phanteks] Enthoo Evolv ATX Tempered Glass [Razer] Deathadder Elite [Corsair] MM300 Extended 
AudioOther
(See audio in signature) [Ikea] Tornliden Desk 
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