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  1. Jam_Master_J

    PIMETA V1 not behaving

    I've just built up a PIMETA here (v1) that is not working at all. It's Class-A biased, BUF 634P, AD843 and OPA 2132 based. Chips seem to be getting the right voltages, nothing is getting extremely warm, but I get nothing but noise on the output. I've left out R11 L/R which I didn't think should...
  2. Jam_Master_J

    Pimeta C6 question

    I have everything to build a pimeta except C6, I'd like to try to get it going without C6 before ordering C6 since I want to get it done and tested. If not populating C6, should I simply short it out? It looks like this is necessary to complete the feedback loop.
  3. Jam_Master_J

    Doing a Pimeta/Alien DAC combo, RCA output/input question.

    I'm building an Alien DAC + PIMETA combo for a buddy of mine and he had one request; one set of RCAs that can be switched between DAC output (for an external amp) and input (so a different source can feed the PIMETA). At first I was going to something with a DPDT but I just thought of this and I...
  4. Jam_Master_J

    ipod video repair question

    I accidentally shorted the output of my 60GB ipod video when I was building an amplifer. Now I get no sound from the headphone out, but it still sends audio out the line out when connected to a dock. Should this be fixed by installing a new headphone jack or is the headphone out on a beefier...
  5. Jam_Master_J

    Strange Millet + Tread problem

    Having a weird issue with a Millet + tread combo I put together. The tread powers up ok and measures a steady 27.00 VDC on the output, it is fed by a 24VAC transformer. As soon as the millet is turned on, the transformer is wokring very hard, and the connection to the positive input of...
  6. Jam_Master_J

    Flexibility of Cardas 4 X 24

    I'm looking at recabling my k701s and figured I might go fanicier than my typical Mogami 2534. I was thinking of Cardas 4 X 24 but I've never physically handled the wire. Since this will be be for a headphone cable I need something manageable (Mogami is already on the edge of what I can...
  7. Jam_Master_J

    Phase shifting circuit for use with a subwoofer?

    Does anyone know a good circuit I can build to adjust the phase of a subwoofers input signal. I'm building some subs but since I'm not using plate amps I don't have precise phase adjustment. Heres the setup: Monica 2 DAC -> Cambridge Audio 540A -> Harris Varible low-pass(currently at 60Hz) ->...
  8. Jam_Master_J

    How to install beyer pads on Grados

    I've got some beyer pleather pads that I want to try out on my Grado SR-225s. Has anyone attempted to do this? Basically I'm trying to figure out the best way to secure them, I know how to secure the pads to a circular coutout, but I'm not entirely secure how to attach this assembly to the...
  9. Jam_Master_J

    STEPS Trouble

    Hey, I just built a steps and it's giving me some trouble. I've done some measuring and it seems like the problem is somewhere in the regulation stage. I foget my exact measurements but they were something like this: AC input: 118VAC, normal AC secondary: 30-ish VAC, normal after diode...
  10. Jam_Master_J

    Describe your headphones "personality"

    If your headphones had a visible personality, what would it be like. I like my k701s alot but find sometimes they don't have as much fun as I'd like. For that reason, my k701 reminds me of a really uptight guy who tries to cut loose at a party but knocks over a vase and profusely apoligises...
  11. Jam_Master_J

    Using DIN connectors for power supplies

    I'm going to be using a STEPS/TREAD combo to create a 24 and 12V supply to drive my Monica 2 DAC and Millet Hybrid. I'm thinking about using DIN connectors but I'm not really sure what specific type I should be buying. I'm thinking of using 3 pins (one for ground, one for +12V and one for...
  12. Jam_Master_J

    Input wiring (USB, RCA, BNC) for Monica 2 DAC clarification.

    I've put some thought into it, and decided I'd like to have RCA, BNC and USB input into my Monica 2 DAC I'm constructing. My questions are in regard to termination impedance and switching: As I understand it, the 75 ohm resistor on Monica means that the BNC and RCA connectors can be connected...
  13. Jam_Master_J

    Question regarding STEPS and use at different voltages

    Hi, I'm building a 24V STEPs (in it's own enclosure) that I intend to use to power headphone amps (MH for now) and a DAC (Monica 2, project next in queue). The Monica 2 requires 12V DC, and thus I was thinking of using a simple voltage divider. I've seen a few posts though claiming that a...
  14. Jam_Master_J

    Cable material test results?

    I seem to recall a thread about a good while back where a bunch of cables that were identical except for the type of wire used were distributed for testing. Does anyone have links to the collected results? I haven't had any luck finding it.
  15. Jam_Master_J

    Any other cereal fans?

    I find lately that I'm really becoming a cereal afficiando. I could eat cereal for every meal and I enjoy discussing the merits of different cereals. Is something wrong with me? Anyone else enjoy cereal a little too much?
  16. Jam_Master_J

    Question about smoking in houses and audio gear.

    I'm looking at rooms in a new town for my upcoming job. I found one place that is a great deal except one thing bothers me. They say that smoking indoors occurs. If I keep my room door closed will my belongings still acquire that very noticeable (and not pleasant) smell? I really hate to subject...
  17. Jam_Master_J

    Sennheiser HD600 vs AKG k701

    I realize the k701s are in a higher price bracket but I often see the HD600/650 in a high price system and thought some might like a comparison: I've got the HD600 on loan to decide if HD580s are a good choice (they're such a good deal right now). Been listening to both for a bit here's my...
  18. Jam_Master_J

    Halifax, NS meet impressions

    Just got back our small meet at kin0kins place (thanks for the drive home Brian ). It was a great chance to get to hear some excellent gear. I expect pictures will be coming along shortly but here are some of my impressions: Senn HD600 - I liked these a lot better than the HD650. They...
  19. Jam_Master_J

    RS-1 vs k701 Comparison

    I've had some RS-1s on loan here for a bit and decided to post my impressions of their relative merits. The RS-1 used bowls. First of all, despite the price difference I find both headphones to be in the sonic league overall. My rig is foobar->Musical Fidelity X-DAC->Millet Hybrid with...
  20. Jam_Master_J

    Comparison: k701 and 2003 DT880

    Just thought I'd post some impressions from my comparison of these two headphones: My rig is foobar2k -> M-Audio Revolution 7.1 -> DIY coax -> Musical Fidelity X-DAC-> Millet Hybrid /w Diamond Buffers -> k701/DT880 The k701s are stock and broken in, the DT880s are well broken in and...
  21. Jam_Master_J

    Impressions: Millet Hybrid vs Dynalo

    kin0kin just got me a fully assembled MH board with a PSU so I got right to work and did most of the casework and wiring. The MH is mostly done except the front panel isn't secured and back panel isn't complete, pretty much done other than that though, enough for testing anyway. I forget the...
  22. Jam_Master_J

    Getting active on a busy schedule

    Trying to lose a little weight here (about 15 lbs) but I find it hard to do with my current schedule. I'll fill you guys in and maybe I can get some recommendations: I have two jobs. My first job starts at 8AM, I have to get out of bed at 6:30AM for this one. This jobs finishes at 4:30PM, I...
  23. Jam_Master_J

    Neutrik NPX 3 - Anyone used it?

    Hi, I bought two Neutrik NPX3 connectors and was planning on using one on my beyer bt880 cable. Anyhow, I cannot seem to get this connector to work. Here's what I'm doing. 1)slide the threaded cap down the cable. 2)Place blue plastic insert around cable. 3)Solder connections...
  24. Jam_Master_J

    Looking at the Corda Aria

    Hi, I've been looking at the Corda Aria and it looks like something I may be interested in. Currently, I'm running CDP->Musical Fidelity X-DAC->Dynalo->re-cabled DT880s. Now, the setup sounds good but I find it a bit too polite and lacking in low-end punch at times. I plan on keeping the...
  25. Jam_Master_J

    PINT working 75%, help me bring it to 100

    Project cancelled.
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