Hi   I'm a long time browser but infrequent poster. I want to DIY a tube amp using tubes larger then sub mini. I've already build a Bijou and Maple Tree Ear+ knockoff, both from scratch not kits. Now I need another amp for the 2nd floor of the house. I'd like it to be busier and more...

Hello folks. I'm an infrequent poster, but have built electronics from kits and scratch for a few decades. I fell into the antique radio hobby a year and a half ago, so decided my PPA needed some vacuum tube company. I'm putting together a familiar amp from scrach. Since everybody loves...

Hello. I'm a long time, casual lurker, infreqquent poster. Got sidetracked with antique radio for the past year.... I want to build a tube based headphone amp. Been watching the price of the MAD amps climb for the past year. I *really* want one of the EarPlus purist amps, but at $500 its...

I'm weird. I fall in love with a song and just gotta have twelve diff renditions. Latest infatuation: Begin the Beguine. I first heard it in the movie: The Rocketeer. Now I own a dozen diff versions and put them all on one CD for the car. I've done this with other classics songs too like...

What do you all use for passing small wires/cables thru a panel? An example being the low voltage end of a power supply brick that must pass into a chassis rather than terminate into a plug. I am sick and tired of using RatShack rubber doughnut grommets for this application.

I want to put together a large compilation for an upcoming poker and fishing vacation with the guys. I'd like some suggestion on music with appropriate poker/card playing/henpecked husband themes and lyrics. Got any suggestions? This is what I have so far. Them from the “sting” Ray...

I bought my first non portable CD player in almost ten years today. I walked in to a local shop and left with a Rotel RCD-1072 and set of interconnects. My Denon player died around '96. Since then, I've spun discs on a RioVolt, Rockford Fosgate deck, crappy combo DVD/CD unit, and even...

This is the final result of my first amp project. I am happy with the sound. It is loud, clean, and free of any buzz. It is a tad bright on some material with my Grado SR125s, but the bass boost works wonders. I have yet to try my ER-4Ps with it. My sources could be improved:two iPod models...

Any of you try to fix scratches in a black anodized Par-Metal enclosure? I put more scratches than planned in the front panel of an enclosure while hand drilling holes. Despite punching starting holes, I let a drill bit walk all over the front. I'm comfortable finishing wood--what can I do...

Looking to add to the group putting PPAs into a series 20 case. The web graphics are of terrible quality when listing actual dimensions for their products. You can't begin to determine what the inside ids are or hole to hole spacing, etc. Do they have better drawings or dimension data...

Basic amp is done (rev1.1) and working good. Now it's time to bias into class A and get bass boost working. Then order a Par Metals case and finish her up. Had some minor trouble at first. Passed voltage checks, but OP-amps were getting warm. Found one of the temp bass boost bypass jumpers...

I'm driving myself crazy trying to choose values for R3, R4, R7, and C7. Is a gain of 3 excessive for Grado's? I'm looking for only reasonable gain and modest bass boost, when powering Grado's. I'll change the components later when I add to my collection of cans. R3 1k R4 1 or 2K R7...

Finished my TEPS power supply tonight. It is the first module done for a full blown PPA I am slowly working on. Ordered parts from Tangent, Digikey, and Mouser. Also needed a few misc bits from local electronics supply house and from RatShack. Only misstep was missing the polarity of C7. I...

Currently soldering a TEPS for 120 volt use. Digikey is out of stock till July on the spec part P10703, value .1 uF Also out of stock on P10731, value .12 uF So I bought both P11005, value .082 uF and P10730, value .15uF I've seen the linked document that suggests how to calc the...

I have made only a dozen purchases, never a seller. Always a good experience. I'm debating listing my backup Mac (G4) and want to protect my ass(ets). My eyes just roll and start to water when I read some of the FAQs on Ebay. So what is the safest way to accept payment for a transaction? I...

What is the recommended voltage for running a PPA? I recall reading a Max rail voltage for the 8610 opamps but not a minimum or a recommended. Don't yet have data sheets. Long story short, I am building a STEPS and PPA (got the boards). What voltage range should I design the STEPS for...

I'm finalizing my parts list and having trouble choosing C7 for bass boost. Can someone give me a Digikey or Mouser part number for the preferred starting point with this cap? I'm looking for the metalized polypropylene BC 416 part in Tangent's article and not sure of the correct item in...

Forgive my OP Amp ignorance, but if unacceptable DC offset levels were measured, what can be done about it besides not engaging bass boost?

Just wondering if there are any Lorie Line fans here. Her music has been my salvation during bad moods for many years.

I'm just itching to build an amp. Have plenty of Heathkit and some scratchbuild experience. Initial use will be with my Mac G5, later with a Rotel RCD-1070. Will drive Grado 60/125s for now, perhaps 225s or a more difficult brand in the future. Also, will get the *s* cable for my Ety ER-4p's...

I've had my Etys less than a week now. I want the superior isolation and bass of the foamies so I've not used the flangies much. How long do you find the foamies to last? I'm convinced that this first pair is already in need of replacement, but wondered what kind of lifespan *you* get from...

I want a new source. Looking for quality build, better than average sound, in a single disc model. No cartridges, no carousels. No combo DVD/CD. MP3 playback ok, but not required as I won't use it. Headphone jack a must, till I get a decent amp. Volume control for headphones on front...

Been lurking for a few months now....validated today. Bought Grado 125s, then 60s based upon your raves (and rants). And KSC-55s. Now I've got ER-4p's coming too. And seeing as how I have no decent source besides a Mac G5 and an iPod, I know what's next from the Fed Ex truck. It's your...