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Showing content with the highest reputation on 03/02/2018 in all areas
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7 points
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Needless to say, I invested in one of these works of art and well... it didn't disappoint. External build quality is way beyond the Cavalli Mk1 unit I had but inside...yeah.... So if anybody thinks this is good for 300$ they need their head checked. Every expense was spared here, just look at the high quality sockets used. I mean, who hasn't heard of the legendary "Hooya" sockets let alone "ZWEE". I mean quality stuff... Circuit looks to be identical to the LC minus the internal switcher. All the same issue as well plus the super cheap volume control...2 points
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Well, half of our drain pipes appear to be on the ground, but the coffee is here. Everything is fine.2 points
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2 points
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Interesting problem, at least to me, and might help someone in the future with these. Fired up the 3rd board yesterday, and all looked well (LEDs, etc.). However, there were problems: Problem 1: Went to check DC offset, and the R channel (both +/-) was showing 4V offset. Not good. After looking the board over, I suspected one of the small transistors (MMBTA06/56), as there were a couple that were a bit crooked and I couldn't tell if all pins were soldered or not. Q3_2 looked suspect, so removed with hot air, which also took the 3.01K resistor right by it. Cleaned and fluxed the pads and got it put back together. I also touched up the solder connections on the others on both channels in this section of the board. Fired it back up, same problem. I then looked at Q1_2 and Q2_2. Straightened these and touched up the solder joints. Success! But I wasn't quite done... Problem 2: Adjusted DC offset (no pot in yet, so will recheck once that is in). I then started going down the 20ohm resistors checking the biasing. All looked good until I got to the L+ channel. These alternated from 290/220mV (they should be balanced between the NPN and PNP sides). The 20 ohm for the closest to the center NPN showed no drop across it. I retouched the solder joints for this transistor, but same problem. Removed and replaced the transistor. Success. Now bias was the same as the other channels and consistent across all resistors. Ohming that transistor out, it appears to be good. I couldn't see any evidence of solder on the bottom of the tab (collector). I know when I checked voltage on it, it showed V+, but I was probably pushing it down with the probe. The collectors aren't connected on the middle small pin on these from what I can tell in the gerbers. I had used hot air to install these originally, but had hit the tabs with an iron with a wider chisel tip. These are considerably more difficult to troubleshoot/rework than the full size dynalos are, so it pays to take your time building them. Before I checked the end transistors in #1, I wasn't relishing having to do more extensive troubleshooting/rework on this. The other two boards came right up with no problems. And I'm still not fond of SMT pots Also, since I don't think this is documented anywhere, with the board facing you (pot, outputs, etc.), looking at the channels as quadrants, they are laid out as follows: L- L+ R- R+2 points
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So I need to vent/laugh... I make my living in IT support for a large corporation and you would think that should rub off a bit on my parents. Nope! My stepdad is 78 and hasn't used a computer in 10 years and smart phones, forget about it. He decides to buy an Ipad and enlists the help of some guy at a bar (not me). What shows up is a fully loaded Ipad pro ($1000 +). Not bad so far right... He obviously wants to set it up right away (enter me). I'm walking him through the process and we get to the point where he needs the wifi info. He doesn't know the router name, asks my mom and she's unsure. I know what they usually choose for names and can see the router in the list. Now, for the password my mom grabs this piece of paper with a jumbled list of passwords (this list looks like its a lost Zodiac letter with red and brown stains on it). She then claims she remembers it only to realize after an hour that it's the password to the security camera system. My stepdad then asks well WTF is the password then? She screams at the top of her lungs what she can remember. This turned out to the the router name. Long story short I eventually remembered what I made the password out to be and it worked. That was three hours of my life I'll never get back. I have more, like trying to help them understand that apple ID's, email, and the passcode for an IOS device are not all the same thing nor will one password work for another. The other day Dad was looking up baseball stats on the ipad, Mom walks by and asks watchya looking at? He replies baseball stats. She asks so you're on the internet? He replies, no I have no idea what the internet is. Or my personal favorite, he bought ticket from stubhub. The PDF of the ticket says "printed tickets will not be accepted". He won't take mine or the ticket's word that he doesn't need them. He drives all the way to best buy and has someone there print the ticket out for him. I can go on and on1 point
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Ha! And I thought there may have been a chance it would actually be BETTER built then the original.....silly me......1 point
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Yeah, gotta love those old Appalachian folk instruments, which originated from the middle east. Dulcimer means sweet song which well describes it's mellifluous character....... So much better than the xylophone/vibraphone, except, of course when the vibe is played by Lionel Hampton......1 point
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Wax up the surfboard brah! Whole bomb cyclone deal looks super gnarly -- positive waves from the West Coast.1 point
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"A bit dark"?!?!? Unholy carp, good thing I was home when I watched this. There are black metal songs that wish they were as dark. I have a new obsession. Listen to how powerful this voice can get.1 point
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We're out of coffee. New coffee is supposed to be delivered tomorrow. If it is delayed by the storm, it is going to be a long weekend ...0 points
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I live just a little above the 495 symbol, about 7mi as the crow flies from the coast. The idea of 20'+ waves hitting the NH coast is mental. This coupled with the near hurricane force winds could make for an interesting start to the weekend.0 points