RudeWolf
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Posts posted by RudeWolf
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So technically what's so bad about USB audio that's solved by AOIP?
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Bin the opamp, sanity check all remaining silicon. I burned my Dynalo with wrong polarity and ended up swapping out all transistors. Really depends on how available the parts are.
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You won't get a real zero with most DMM's and that's really not needed. My rule of thumb is to stay below 5mV at all times and be done with it. Just watch that warmup doesn't stray too sideways and you should be okay. Also - when adjusting with servo opamps in place, always measure the opamp output pin rather than amp output.
P.S. What's the current standing with PCB design on the mini-dynalo? Maybe it would make sense to make the PCB wider so it fits readily available cases? And add standoffs for guys wanting to mount it with screws.
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Interesting, just checked the datasheet and the noise figure checks out. I wonder how the guy got his -140dB noise measurements. He's an EE at TI and should know better than that.
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There's also THAT -
http://www.neurochrome.com/product/that-receiver/
The board's a bit pricy, but should be easy to implement.
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Well, 10Ah would mean 2x the size. No way around it.
As for the new design, I hope the cold sterile Sabre sound has been warmed up a little. Otherwise it has always struck me as a stellar offering technologically way above the rest and at a killer price.
All in all - go Oppo! I really like my PM-3.
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I'm game. I just wonder how many to get to be on the safe side...
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Narp, extra 1.25$ wouldn't be an issue. Any news on how's the best way to case the thing?
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I'm good with smt soldering and wouldn't want to ruin my oven! And that paste is super expensive.
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10 hours ago, mypasswordis said:
If done right there is nothing bad about it.
Well, you could say the same about Class AB and maybe even Class D. Even classic Class A doesn't guarantee anything, unless it's done right.
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I've heard nothing but bad rep about these bias changing class-A amps. Used to be all the rage in eighties.
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Only hips don't EVER lie!
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40 minutes ago, cspirou said:
I haven't built any yet. I made a project list on mouser to order the parts for two channels but I haven't ordered any yet.
My money is a little tight for the moment so I am just keeping the PCBs for now. When I do start I want to make the power supply and amp in separate chassis so that they can stack and take up a smaller footprint.
so I can't totally vouch for easyeda but they did pass testing and i have no reason to doubt their functionality.
What are the dimensions of these boards? I might be up for a pair.
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Speedmaster-ey watch for poor sods like me and... okay, just me. http://www.nezumistudios.com/
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Well, we might as well manufacture the case to be fully sealed and fill it with mineral oil.
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What about solder-on sinks? Like here -
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What's the usual procedure for heatsinking smd devices? Sprinkling vias around or screwing on a small heatsink?
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Save for the smaller regs, everything else should be manageable. Just keep the parts from flying off the table.
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SMD, SMPS... Blasphemy!
I'm actually super proud to see HC finally embracing the newer tech. How do these SMPS'es look under the scope? Does extra after-regulation help?
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The info on the sub is scarce. At first I thought that Equator guys were crazy enough to devise 18" coax main monitors. Here's the skinny -
Frequency Response (-6dB): 15Hz - 180Hz
Recommended Line Level Input: 10mV-2V
Amplifier Power (LF): 1000W
Amplifier Peak Power (LF): 2000W
Sensitivity: 1w/1m output, 103dB
Max SPL: ≥129
Input Impedance: 10kΩ
L.F. Driver VC Size: 4”
L.F. Driver (4- ohm): 18”
Crossover Frquency: Software Configurable
Inputs: XLR, USB, RS485 in/thru, ¼” phone jack
Protection: Compression (LF), thermal, short circuit, under voltage
Magnetic Shielding: No
Enclosure alignment: Bass-reflex
Enclosure Construction: 1” HDF baffle & 3/4” 13 layer Baltic Birch
Finish: Black/Micro-Metallic Gray
Dimensions H x W x D (in.): 29 x 25 x 25
Shipping Weight (lbs.): 160
Originally these sold for around 5k$, but now I'm able to get one for 800EUR shipped.
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The Q12's are anything but mild mannered. Stock they go down to low forties/thirties and with my SB-2000 sub it's pretty much 20-20k coverage. And 500+200W continuos power is something to behold. Fortunately DSP tames the horn driver, so there's not really a hint of harshness.
Interestingly enough my SVS 12" sub has a hard time keeping up with the mains at high SPL's. The frenchman who sold me the Q12's has made me an extremely nice deal for the Equator Q18S sub. Think - 18", 1000W continuos and 16Hz -6dB point for a 160lb sealed box. On top of that I can daisy chain the sub to mains with a CAT5 cable and control all speakers via software.
And yeah - the photo is super dark, because that made my room look less untidy.
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Yesterday finally acquired a pair of Equator audio Q12's. Yeah, I know - they're hardly audiophile with all their internal DSP trickery and 12'' drivers with compression horn tweeters are hardly appropriate for near field...
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Susy Dynalo. The LCD-2 isn't that hard to drive.
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2 hours ago, wink said:
But... everyone knows that carbon resistors give a nice organic sound signature.... think 1960's transistor radio........
That's germanium transistors. One guy from a Russian forum had a rather decent headamp schematic based on these things.
Ye Macce Threade
in GoRedwings19's Computer Help Hotline
Posted
Watch the first 10 minutes.
tl;dw - Wi-fi on new MBP's is bottlenecked by Thunderbolt data traffic.