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  1. Arkku

    SOHA II Builders Thread

    Quote: Originally Posted by Ferrari To drive the analogue VU meters, I used the driver circuit as depicted below. Thank you for the details, I finally had the time to experiment a bit with the VU meters I scavenged from the dumpster, and this circuit seems very suitable for them. =)
  2. Arkku

    SOHA II Builders Thread

    Beautiful work, Ferrari. May I ask what kind of a circuit did you use for those analogue VU meters and where in the SOHA II's did you hook it up? I recently scavenged some vintage VU meters from an old tape deck someone was throwing away and I've been thinking of using them in a DIY project...
  3. Arkku

    SOHA II Builders Thread

    As for the zeners and noise, here's a bit more on my experiments with them: When I first built the amp, I tried both the resistors and Fairchild 1N5248B zeners. I couldn't detect any difference between them, so I left the zeners in. Recently I tried tampering with the tail current (with...
  4. Arkku

    neutral tube amp <$500

    If an amp has “tubey warmth”, is it still transparent/neutral? =) I'm not trying to nitpick or anything, I just find it funny because I personally choose to use a tube amp because I don't want a truly “neutral” set-up (instead preferring the tubey warmth). That said, if you're into DIY, the...
  5. Arkku

    subwoofer cable connections

    If you run both cables, the subwoofer takes the bass from both the left and the right channels (even though it doesn't do stereo playback by itself). So, like iriverdude said above, you'd miss out on any bass signals that were present only on one side. Then again, if your amplifier has a...
  6. Arkku

    SOHA II Builders Thread

    Quote: Originally Posted by wolf18t Thank Arkku, I'll check if Digikey carry them. Did you experiment with the tail current to see if it change the sound somewhat? No, I haven't really experimented with the tail current setting, as I'm not sure of the possible benefits. It sounds...
  7. Arkku

    AKG K601 & K612 Pro Owners... UNITE!!

    I'm probably going to recable mine, simply because I prefer a separate cord on each side, instead of just one on the left. I also find the stock cable a bit too long (it gets tangled up on the floor). Not sure yet what cable I should use for the modification, though, since I just put the rest of...
  8. Arkku

    SOHA II Builders Thread

    Quote: Originally Posted by wolf18t Anybody tried some zeners yet? Were they noisy and, if not, what brand did you use? I have zeners installed in my amp, they are Fairchild Semiconductor 1N5248B's (Mouser 512-1N5248B). When I was building the amp, I asked here about the zeners...
  9. Arkku

    AKG K240 Sextett--Grado'd AKG?

    Quote: Originally Posted by scompton Get the pleather pads if you get new pads. IMO the only reasons to get new pads is if the old pads are cracked or so flat you can't get a good seal. Alright, I guess I'll go for new pleather pads then. The ones I have are still manageable, but...
  10. Arkku

    AKG K240 Sextett--Grado'd AKG?

    Regarding the loose elastics, I came up with a cheap DIY solution which works very well for me: I wrapped some thicker elastic chord around the protruding part on the earcups and the attachment point for the old elastics. It seems to stay put rather well, and doesn't even strike me as too ugly...
  11. Arkku

    AKG K601 & K612 Pro Owners... UNITE!!

    I've had my K-601s for a couple of months now. I have to say I'm very impressed with them, especially the openness and comfort both physically and sonically. I put the K-701 pads on mine, though, because I find them better looking and slightly more comfortable. I'm using these with the SOHA II.
  12. Arkku

    AKG K240 Sextett--Grado'd AKG?

    I just got a Sextett myself. Seems to be a mid-production version (orange circle around the radiators, holes in the headband and orange plastics inside). The foam was disintegrating badly so I replaced it and re-cabled the phones while I was at it (the original cable was not in a very good shape...
  13. Arkku

    SOHA II Builders Thread

    Quote: Originally Posted by Hayduke Is that the BOM Hammond case? (obviously the short one since you housed the toroid in a seperate enclosure) So there's not issues with air wiring the sockets to the board? (like picking up interference or anything) It's the BOM Hammond case...
  14. Arkku

    Lets Talk Metal

    For me, the best black metal album of all time is Arcturus: Aspera hiems symfonia. On the more gothic/doom side of things, I like Theatre of Tragedy's first two albums (self-titled and Velvet Darkness They Fear). Then again, I haven't been listening to much else in this genre since the late...
  15. Arkku

    SOHA II Builders Thread

    Quote: Originally Posted by Hayduke I'd like to build mine "upside down" too so the tubes will stick out further. I like they way they look As an alternative to the “upside down” build, I mounted the tube sockets on a separate platform made from scrap aluminium. It slides into...
  16. Arkku

    Opinions for AKG 240 vs. Denon D1001 vs. Grado SR60

    I'd get the AKG K-240 for the comfort alone (and that's about as far as I've compared these directly =). Or perhaps consider some MB Quarts, depending on what kind of sound you're looking for.
  17. Arkku

    SOHA II Builders Thread

    Quote: Originally Posted by bmwpowere36m3 Who here has done the high-current heater mod? I know Ferrari has, I'm trying to find a replacement heatsink for H- and with the size constraints of the BOM case... I've done the high current mod (although I put in a switch to toggle R3P...
  18. Arkku

    Best Recording of Beethoven's Pathetique?

    How about Annie Fischer? She has recorded the complete Beethoven piano sonatas, which are easily found.
  19. Arkku

    SOHA II Builders Thread

    (Except LV+, as its tab is connected to the pin which is supposed to be grounded. Assuming the heatsinks themselves are grounded.)
  20. Arkku

    how much does power cable influence the sound?

    Considering the amount of cables the power travels through to get from the power company to your amp, I don't see how changing the last 1.5 meters is going to make any difference other than psychological. However, to test it, why not get borrow a high quality power cord from somewhere and...
  21. Arkku

    SOHA II Builders Thread

    I get a very distracting hiss from my SOHA II as well if I plug in cheap IEMs (Creative EP-630, if I recall the model correctly). However, it's silent with both the AKG K-601s and MB Quart QP-280. I also get a slight hiss (inaudible with any actual audio present) if I use the SOHA II as a...
  22. Arkku

    Optical Toslink Sound Output

    Quote: Originally Posted by hoodlum Actually there can be a large difference depending on the quality of the clock. Here is one person's experience comparing the digital connections between the 1820m and the AP192. It is difficult to read due to his rough english but there is a lot of...
  23. Arkku

    Optical Toslink Sound Output

    Any optical output is the same, but one thing you should check is that the soundcard can output audio without resampling or other mandatory processing of the signal. As long as this holds, it doesn't matter which soundcard (with an optical out) you get—spend the money on a good DAC instead!
  24. Arkku

    How to hide itunes store in itunes?

    Thanks, that worked for me! I found the links a bit annoying but apparently not enough to google for the solution myself. =)
  25. Arkku

    Post pics of your builds....

    Hi, Quote: Originally Posted by fishski13 arkku, beautiful! hope you enjoy the tunes. Quote: Originally Posted by MASantos Very impressive! The panel work looks great and well thought of! How does it sound? :P Thanks guys! I did prototype the panel with a...
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