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Hi all I have been searching for a manufacturer of isolation boxes for a larger server. My company resells Intel Server Boxes that sound like hovercrafts. Some of our clients are complaining. What I need is an acoustically(but not airtight) box to quieten this thing down a lot. Can anyone point...

Hi Pretty Good. I haven't had the time to get full specs on it. I was hoping to run full tests on it(freq response, noise levels, etc) before I release the final schematic. I have a new baby, so its been a little lean in the free time dept. Anyhow. If I were to do a "How-to" kit, I would...

Hey All. Finally Finished.... Yep it works... I need to tweak the phase & gain controls a little, but yeah.. everything works.. As for the power issues... I use an external power supply (16VAC) that is shielded and run through the case. The power is switched by a 12V relay that is powered...

Well I will be able to tel you in a day or two when my gain controls come in. The circuit needs a fancy 10K reverse Audio Taper Vertical mount potentiometer. I just couldn't get them in the city, so I had to wait a week. I just used a fixed resistor to test the circuit for now. So far, it seems...

Well... I think I am just about finished here. I ended up just scrapping the idea of running off the computer power supply. I wasn't able to get the voltage levels and stability that I wanted to make this a clean unit. What I ended up doing is mounting a small adapter connector on the back of...

Harv I tried out the cct on the paia site on my cct Sim, and it didn't exactly give me what I would call phantom power. I put in a sine wave of +/- 15VDc and got an average 20VDc out the other end. I emailed paia to see if there is anything I could do or hadn't done. Any ideas? Andrew

Hey. That's great! I didn't think of usng a hex inverter as a signal generator. The diode/cap array looks almost like a cascade voltage multiplier, but the design is a little bit different than I have seen before. I will mock it up on my circuitmaker program and see how well it holds up. And...

I am building something similar to the e-pre (from ARX) I just have the standard soundcard that is built into my Asus motherboard (for now) All I am building is a preamp to give me the +15 dB boost that my Aux input needs. I am basing my input section off of a Soundcraft front end(which I...

Thanks Sangram Maybe I can just use the computer pwr supply to power a relay that can switch on my power supply. I think I will use a traditional pwr supply after all. You're right about the interference, I can always shield the xfrmr within the unit. Luckily, my cct is so small that I have...

Sangram Thanks for your reply. Yes I had considered that I may have to do it that way. The reason I was shying away from that method is because of two things. One, I would have to tap the mains which doesn't excite me. Especially since it is an ATX pwr supply that is turned on&off by...

Hey all I am asking around if there is any electronics geeks like myself out there that may know how I can achieve a 48V phantom power voltage using the 12V Power feed from the computer Pwr supply. I know that there is a way to boost DC using a switching regulator, or perhaps by using a...