Do It Yourself

It seems you bastards have finally led me to a trail of misery and pain and I feel I should repay you with dumb questions. I plan on this thread growing as my dumbness expands into more areas. I'll start with one question that's been bugging me for a little while.. Resistors. Does the power rating matter as long as they're not underrated for any particular circuit? I've seen 1/8, 1/4, 1/2 watt and so on. Does it matter as far as performance/sound goes?

Thought some of you guys may be interested in these if you had not seen them. http://toolguyd.com/...-storage-boxes/

Got a regular 24v psu (no minus voltage), 100k vol pot and a small case. Best amp to build?

Nectar Sound, purveyor of the Pollinator and now the Hive headphones, has a DIY amp published on the website. I reached out and picked up a PCB so I can build this low cost energizer and see how it stacks up against my SRM-252S. Attached is the schematic, BOM, image of a completed amp, and hook-up guide. You can also access everything on the Nectar Sound website. Sajeev has updated the board slightly from the images attached to hold a pair of CL-90 inrush limiters to prevent blowing a fuse on start-up. I'm in the process of gathering the parts now, but wanted to post this to archive the build and see if anyone else was building (or has built) one. Nectar1p0_Headp…

I have 6 pcs 6088 tube, with this spec : I want to build tube Amps with 2x9v battery. Anyone has headphone amps schematic with this tube

For the moment I have the beta and the EHHA amps, two boards each but only one Sigma. Until I get another sigma they are going to share. The sigma has four outputs, enough for the boards. Now, if I want to run both amps together is there any reason not to? I can switch on the heaters before the amps to warm up the EHHA. Any problems so far? Not ideal but I'm not worried about ideal at this point, just functionality. There's also the option of running the sigma output pairs through switches to turn one or the other pair off. Any thoughts on the best and safest way to do this or is what I suggested first fine?

ok, so I've been looking on and off for the last few days and I'm wondering what everyone else is using? I've looked at the amphenols, but what confuses me is the price point. I only need 6 connections and metal is not necesarry, but if the price is the same or close to plastic I'd go with that. Any reccomendations that Mouser would stock?

I bought this Audio Note Kits HE-6 headphone amp and had it built by a well known Audio Note kit builder, digitalpete. The amp sounds great with planar headphones but I have a problem I need help with. The volume control has a terrible scratch noise when adjusting the volume while music is playing. It will also produce the scratchy noise when the volume control is even touched while music is playing. When nothing is playing the sound is there but barely audible. I emailed digitalpete and he wants me to ship the amp back to put in a new volume pot. In looking at the khozmo volume pot it looks like there are only 11 connections to solder and all are easily accessible so…

After almost ten years of loyal service, my KGST is starting to show signs of malfunction. Since last week I have a loud hum in the left amplifier channel. I replaced the tubes with another pair and readjusted the balance and offset. No hum could be heard and I could enjoy the music undisturbed again. The next day the hum unfortunately returned. Readjust everything and the hum was gone. After switching the amplifier off and on again, the hum returned. I have swapped the filaments, but that didn't solve the problem. I also left the gyro turned off, but that doesn't make any difference either. Hopefully someone has a good tip to try.

So I'm turning one of my garage bays into a workshop. I'm able to fit 8' x 10' with a 9' 6" ceiling no problem. I need some ideas on counter surfaces and cabinets. I'd need some storage, an area for a desktop and 4-6 amps, 2 dacs, and a preamp. Lastly an area to work on projects. Is there an online layout tool that doesn't have a huge learning curve or anyone on here that can do a layout? I'd gladly throw a few bucks their way for some time.

Hey guys, I'm building a desktop system in a custom rack, more on that later, but I need a few cables that I can't find commercially. First, I need a 2' cable with 4 right angle banana plugs on one end, and a rear panel mounted female 4 pin XLR connector on the other. It needs to be somewhat flexible, as it will bend 90 degrees in the middle of the cable. It would be nice if each banana could be marked in some way, as to L+, L-, R+, R- (for K1000 pinout). Next, I need two very short pairs of analog RCA interconnects. They need to be 6" ea. and of good quality wire and connectors. Last, I need a 6" 75 ohm RCA digital interconnect. I'll of coarse pay well, but d…

Anyone got a black neutrix 4-pin xlr NCMX they can spare to send me? Cheers Pete

Anybody seen these yet? Pretty damn sexy, really. Hopefully they are easy to get hold of...... Walnut Chassis with Aluminum Top Panel Steel Chassis & Bottom Plates with Walnut Side Panels Aluminum Chassis & Bottom Plates with Walnut Side Panels Example:

Someone at HF posted about this. Check out about 3/4 of the way down the page for chassis with walnut: Hammond Mfg. - Small Enclosure Index

Is this really news around here? I don't really follow specs...but I have to admit to being curious.

Saw this somewhere and hadn't recalled ever seeing it before: Switchcraft EH35MMS Switchcraft Just what Justin needs to keep those pesky 6ga ipod docks from breaking jacks

A really good article by Nelson Pass on class A, A/B and B operation... http://passlabs.com/pdf/articles/leaving_class_a.pdf

only talking about non-ESD amps here (aka common amps), if the amp has no negative feedback, (using n-fb could achieve pretty pretty low output z, 0.0x ohm i assume), but how about those none-fb ones? open loop is a hard subject

For the last few months I've lost all my motivation for DIY. I have parts to complete quite a few projects but all my motivation is gone... I haven't been listening alot of music too... I haven't fired the soldering iron probably in 6 months... Any ideas to help me get back DIYing? I'm sure some of you had this problem! Thanks in advance! Manuel

Who needs low distortion and high power? What about some high distortion, high noise and very limited power output. Apparently some people want that in an amp... This has been a long time coming but this one will bear a striking resemblance to certain production amps but combine dynamic and electrostatic output in one amp. More to come...

Crossposted from diyaudio: http://www.onsemi.com/pub/docs/pcn/PD20685.pdf On-semi are discontinuing all of their TO-92 products because of a disagreement with a subcontractor. List includes all the MPSWs.... //UFN

Is anyone familiar with this "hacker collective"? [url=http://www.nycresistor.com/]NYC Resistor

Time to make some cables. I want to cover them in the soft nylon stuff. What sizes would I need for the following: 1) 4-conductor 22 or 24 AWG braid 2) Over regular Mogami Thanks!

Partsconnexion: 15% off all film caps until Oct. 31st (20% off Jensens?) Soniccraft: 15% off everything (in stock only, check Specials page for a few exceptions)

I've started up this thread to give folks a place to offer their time/parts/labor whatever to help Icarium get his SP amp up and running and with a little luck maybe even sounding good. Hopefully this thread will to organize the effort that I'm sure has already begun via PM's. If your unaware of Dan's situation: