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- Users: OtterMarc
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Modding Turtle Beach SRM
Metril, You don't give us many details. Your Fuze phone should sound at least "all right" as is. Having an external amp for a phone source is likely less effective than getting better headphones, but I've no direct experience with the Fuze, so it's just an opinionated guess. The 11 pin...- OtterMarc
- Post #3
- Forum: DIY (Do-It-Yourself) Discussions
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Single Chip Buffered Cmoy
Andrew, The NE5532 is an old staple in the audio trade. Much of our music from the 70's 80's etc was mixed on that op amp or similar ones. It isn't up to the standard head-fiers appreciate today. Having a bipolar input means that bias currents must be taken into account. Here are two...- OtterMarc
- Post #4
- Forum: DIY (Do-It-Yourself) Discussions
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Make your own vaccum tubes - Video
Still, very nice to see. Thanks for that.- OtterMarc
- Post #3
- Forum: DIY (Do-It-Yourself) Discussions
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Alien DAC v1.1 Construction Thread
SMEGGER - there's nothing wrong with your pictures. Nice going. Sound nice? I'll be building one shortly. Jeff has sent me one in the mail. SLAUGHTER, wow, no REG101's. Wish I knew what to suggest. August 2008 would be fine for Aussies - it's their summer now. We've got winter projects to...- OtterMarc
- Post #961
- Forum: DIY (Do-It-Yourself) Discussions
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Alien USB DAC!
PMed you MASantos. Is that last one yet spoken for? Marc Update: Manuel PMed me, not available at the moment. Lucky I wasn't in any hurry. Smiles.- OtterMarc
- Post #30
- Forum: Member of the Trade Sponsored Threads Forum ARCHIVE
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calculating resistor wattage...a bit confused.
Quote: Originally Posted by duchamp I wont get into to what I WAS doing though. Now measuring the drop on this 0.22 resistor I'm getting something like 0.015v So with the formula I'm getting P= 0.001 Meaning I could use a 1/8 watt resistor in this position? YES! .015V X...- OtterMarc
- Post #9
- Forum: DIY (Do-It-Yourself) Discussions
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quick Q about diy pc fan speed controller.
Reasons why your 100K pot won't work is that you need to drop a few volts, 5 to maybe 7 off the 12. I have a 120MM fan here, quiet-ish and it takes .08 Amps at 12 volts. One would need to guess or better, measure what actual current yours would require at lower voltages and lower speeds. To...- OtterMarc
- Post #7
- Forum: DIY (Do-It-Yourself) Discussions
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Small Montreal Mini-Meet to celebrate SPRING!
Larry, There was a Montreal meet sometime in 2006. You might get lots of names from that thread. Marc- OtterMarc
- Post #65
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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PPA rewire complete
Quote: Originally Posted by BradJudy I wired in a bi-color LED to note the power mode. BradJudy, I like your dual-color LED idea. Makes me find new uses for the triple versions! MuHuhahahah!- OtterMarc
- Post #4
- Forum: DIY (Do-It-Yourself) Discussions
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Small Montreal Mini-Meet to celebrate SPRING!
Sorry, can't make that weekend. You have fun, and I'll try to make the NEXT one, or start an Ottawa one... hehehe. Marc PS After several calls and messages, Sennheiser never called back.- OtterMarc
- Post #61
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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Brain-Pick- Can it be done? Cable guys help me out-->
Rob, You've already got the cable issue resolved, but there's another. The guitar signal may be too weak for the amp. You might need some kind of guitar amp between your guitar and the amp for it to work. The TV in is meant for a line-level input up to a volt. Guitars don't put out one volt...- OtterMarc
- Post #6
- Forum: DIY (Do-It-Yourself) Discussions
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Small Montreal Mini-Meet to celebrate SPRING!
Quote: Originally Posted by DanT The fee for Exibithor start at $2000 depending on the room and the average rate is around $4000 Scrub that notion!! I'm still laughing at myself! Unsure of dates in middle of month, kids visiting. Looking for work is current priority...- OtterMarc
- Post #46
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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Small Montreal Mini-Meet to celebrate SPRING!
A thought: What about asking for a meeting space at the audio-video show. It would be 100% consistent with their intent to attract an audiophile crowd. Someone from Montreal could look into it, perhaps. (I'm the Montrealer exiled to Ottawa) There's been no response still from Sennheiser...- OtterMarc
- Post #36
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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Output transformer for stats?
Quote: I think that's a little off. The turns ratio of a transformer is determined by taking the square root of the primary impedance divided by the secondary impedance, or the reverse in this case since this is a step-up rather than a step-down transformer. Tyre, Wouldn't this be...- OtterMarc
- Post #6
- Forum: DIY (Do-It-Yourself) Discussions
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Small Montreal Mini-Meet to celebrate SPRING!
That's terrific Nightfire. I've just received a pair of AlienDac boards to start on. No parts ordered yet. Sennheiser have still not responded. I called again just now. We'll have to wait and wait and see. Perhaps I'll catch them at a better moment. I'm still interested, but out of...- OtterMarc
- Post #20
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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Mini-XLR "Tini-Q-G" on sale at Newark
Just a Head-Fi heads-up. A minor sale at Newark (Canada and US?) at: http://canada.newark.com/jsp/search/...&D=switchcraft Go to Switchcraft.com / connectors, and go down to Tini-Q-G Miniature XLR Connectors to get the right part numbers. The Newark link includes normal-sized XLR. Hint...- OtterMarc
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- Forum: DIY (Do-It-Yourself) Discussions
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Newb Question.
willmueller, Head-fi is getting big. Means that finding stuff is harder. You'll see good discussions and links - explanations in DooBooloo's thread on his TPA6120-based balanced amp. With links and side-distractions (!!) a few hours of reading...- OtterMarc
- Post #12
- Forum: DIY (Do-It-Yourself) Discussions
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Small Montreal Mini-Meet to celebrate SPRING!
I'll call again tomorrow. No news so far. Edit: Slow progress (I'm job hunting!) on my and Sennheiser's parts. Waiting to connect to key person at Sennheiser. Marc- OtterMarc
- Post #11
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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Small Montreal Mini-Meet to celebrate SPRING!
Yes there are more. I saw a meet or two listed in the fall. I may contact them. Right now, I'm awaiting a call back from Sennheiser, see if they're interested in participating. The Canadian office is in Pointe Claire. TTYS Marc- OtterMarc
- Post #7
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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OT: Help for a Science Fair Experiment
Quote: Originally Posted by error401 ...with the transistor you're solely voltage switched, which will cut off for e.g. Alkaline batteries before they're dead - with the relay you're dependent both on current supply and voltage which means it'll react differently to different battery...- OtterMarc
- Post #14
- Forum: DIY (Do-It-Yourself) Discussions
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3D board layout
Hope no one minds this being re-opened. Tangent's link at the top has moved to: http://www.matwei.de/doku.php?id=en:...:documentation Enjoy.- OtterMarc
- Post #8
- Forum: DIY (Do-It-Yourself) Discussions
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OT: Help for a Science Fair Experiment
Here's a possible solution for your daughter: Power the clock through a relay. Once the relay opens due inadequate current to hold it closed, the clock will stop. It needs to be started at the same time, of course. An additional load may be required, a resister, or something that moves for...- OtterMarc
- Post #12
- Forum: DIY (Do-It-Yourself) Discussions
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OT: Help for a Science Fair Experiment
billybob_jcv, Just wondering. The motor may no longer turn, but the clock might keep right on going. Just a thought. Marc- OtterMarc
- Post #9
- Forum: DIY (Do-It-Yourself) Discussions
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I'm looking for an Alien DAC PCB
Still another (very) sorry head-fi-er looking for an alien dac board. Anyone willing to sell please contact me. Much obliged and thanks.- OtterMarc
- Post #6
- Forum: DIY (Do-It-Yourself) Discussions
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Graphic equalizer question
John, What medium are you using? Cassette tape, portable digital recorder, MP3? External equalizers will rarely drop a zone more than about 20db, though that's usually enough. Music shops carry them and will rent them, but likely a computer solution exists. On your computer in MS Media...- OtterMarc
- Post #2
- Forum: Headphones (full-size)