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Marvel

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Posts posted by Marvel

  1. djk,

    Without the horn inside the cabinet, how deep should the base be? Could it just be made the same height as the top of the LS? That would give a bit more volume than you spec'd out. I could then adjust my drawing to suit. I think I made it the same height as the top, just for the fun of doing it.

    Marvel

    btw, I meant to say I had a folder labeled djk_wisdom. Sooner or later it comes in handy.

  2. Justin,

    Most foam, like egg crate foam or matress pad foam, isn't good for controlling bass frequencies at all. Plus, it isn't the least bit fire retardant. I'm thinking of a recent nightclub fire, that wasn't using something like Auralex or Sonex acoustic foam. Two good brands BTW, if you like the foam look.

    Dale,

    Are you talking about those hard fiberglass panels, with all sizes of fiber in them? They are lot weigh a lot, but they really work.

    You sure need the six inches of insulation inside the concrete walls. While living outside of Madison, WI, we had just the concrete walls in the basement. Only halfway in the ground as well. Just about unuseable in the winter. We've gotten smarter since then, and moved south.

    Better get that finished within the next couple of weeks, before the early snows hit. 10.gif

    Very neat stuff.

    Marvel

  3. Rock bass, a 5 string bass goes to a B. The A below that is 55Hz. Like I said before, listen to some Victor Wooten. Listem to some Edgar Meyer on acoustic bass. Meyer can even reveal how good your highs are, as he can do some things that fiddle players can't do.

    Drums are a different story. A kick will have a pretty strong fundamental around 20-25Hz. That is where the chest thumping comes in, not from the bass.

    Marvel

  4. Mark,

    Those tranny prices are high aren't they. Small shop I guess. I wonder how they compare in the real world with some Hammonds. They are very reasonably priced. It's all Hammonds in Tony's PP 2A3. At least the interstage transformers.

    Marvel

  5. I just wrote/emailed to Eminence to get the values for the K33. You can't order it directly from them, but the could probably give you the T/S parameters for the other models. If you order a hundred, you can have them make them for you.9.gif

    Marvel

  6. Since the smoke makes a film on parts, they tend to get almost gooey with the dust that then collects. You can also get aerosol cleaners for electronics (some are even okay for the environment). Then you pretty much just wash off the parts. You would be amazed at the crud that will come off. Blowing out with an air compressor will help dry off the chemicals. Care with the air, as too high a velocity can blow parts off the boards (really). Still, when you are done it will look like new inside.

    Try these guys for different cleaners (Mouser carries their stuff, as well as other vendors):

    http://www.techspray.com

    Later,

    Marvel

  7. This is the Magnequest replacement for the MarkIII OPT:

    MQ-431-CL Upgrade replacement for Dynaco Mark 3 and Mark 2 amps.Also replaces original on 60W Sunn amps that came with Dynaco output xfmrs. Matches to 2 6550, EL34, or KT88 tubes. Rated 60W, 4300 ohm impedance with 43% screen taps. Note, this unit has 4, 8 & 16 ohm taps (the old A-430 only had 8 & 16 ohms). $189 each.

    They are supposed to be pretty accurate replacements, but mdeneen should could be correct. This is from the Triode Electronics site

    Marvel

  8. I like the part with the weights in the top of the tires, so when they get a little nudge, they roll uphill. I got it as a QT file, so I don't have to be online to watch. Gave a copy to the physics teachers at the college where I work. THey were impressed.

    Marvel

  9. As I recall from a couple of other posters, you have to take the driver off the horn to put the horn through from the front. Then the pieces all fall apart and can be fun to put back together. They should sound better mounted on the front, as the wave front from the horn doesn't have to suddenly go through the front panel with the top and sides parallel. But they do sound good on the back.

    Marvel

  10. But putting on new strings is sooo good. That small window between the too much zing and the going dead part! If you have a very good acoustic, you are way into the dead string part before you realize it.1.gif Then you meet people who say they have had the same strings on for five years. "Oh, you mean I should change them?" Basses are a different matter entirely.

    Marvel

  11. Since I am east of the Mississippi, and don't get to the west coast, for those who like live jazz, should check out Dizzy's in San Diego. An old friend, Chuck Perrin runs the place. No booze, no meals, just a jazz and whatever club. Hosts all kinds of music. I've got a Gary Scott CD he produced, Billy Thompson CD (nice tele licks). Art Johnson, jazz guitar.

    Marvel

    almost forgot:

    http://dizzyssandiego.com/

  12. This is the part # from Eminence, the makers of the speaker.

    SPEC 15162

    PART # K-33

    RE OHMS 3.39 FS HZ 34.46

    LE MH .96 MMS GMS 78.59

    QM 7.39 CMS mm/N .2714

    QE .410 RMS NS/M 2.3037

    QT .390 VAS LTRS 301.66

    XMAX MM 8.20 SD SCM 889.59

    BL TM 11.88 EBP 84.4

    EFF % 2.91 SPL dB 96.6

    Wattage 150rms

    The price from Klipsch is really very good. It would be hard to find other speakers with an Xmax like this.

    Marvel

    • Like 1
  13. Malcom,

    I have made many mistakes over the years, but one of them was selling my D28 to a friend of mine in the early '70s. I think it was built in '65. He now has a collection of about 10 or so. Including a '27 archtop Martin. His kids aren't interested at all, and he was considering letting me keep the D28 for him, so it would get played and cared for. He also has a D45 of newer vintage, and a couple of the D728 models (really neat 7/8 size D28). Right now all I have is a '40s era Gibson lap steel, '74 Guild F30R (Indian rosewood) and my '91 Taylor 812C, also Indian rosewood. It is the one in the avatar.

    I've owned other Martins in the past. My brother in law now owns my '51 D18. Sweet guitar. Had a 0018 as well. The Taylor is the only small bodied guitar I have found that can compete with the Dreadnought size. It gets you maybe 80-90 percent of the way there without the size. There are lots of great luthiers in the US right now, but the prices are though the roof.

    Marvel

  14. Ray,

    The question comes up all the time. Maybe you did post it before 9.gif

    I think we want bass that isn't really there in live music. An acoustic bass really doesn't have the size to reproduce the frequencies it is meant to play either. Is the note still there? Sure, but a real acoustic bass won't slam the gut. We seem to want it to feel like we are inside the bass. Perhaps a little more on the LS would be nice, but given the option to have a pair without a sub or no LS at all, I know what I would pick.

    Marvel

    • Like 1
  15. Malcom,

    Brazilian rosewood ups the price tremendously. In the acoustic guitar arena, it will add aprox. $2000 to the price of a guitar. Most rosewood used now comes from India. It is grown as a windbreak on tea plantations, and is under a regular rotation for harvest. There are other woods similiar to rosewood (color and grain, and for guitars, similar tone), that are also not as expensive as Brazilian rosewood. Brazil is (believe it or not) being a bit more careful about what gets cut down now. It is still considered the best.

    Marvel

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