Recent content by IronRadio

  1. I

    Eden E300T: Any Photos of the Inside Yet?

    Let's hear it for $725. A new low price!! :hyper: :bassist: :hyper:
  2. I

    Amp Guts Photos - Official Thread - Lets see those pics

    Here's the insides of my DB455 400W amp, designed and built by yours truly!
  3. I

    Show your old Bassman!

    My '67 Bassman setup :hyper: including my EV 1x18 and my custom made 5-string. :bassist: :hiding:
  4. I

    The DIY Tube Head Thread

    The DB455 is done!! :hyper: But I can only get 300W out of it. The HVPT isn't delivering the needed current with sustaining the voltage. Therefore I might replace it. But the thing is bloody loud as it is. With gain and volume at half, the walls and floor shake incredibly as does my head. A...
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    The DIY Tube Head Thread

    Cool! Then perhaps I can pick your brain as to a preamp design. Here's what I was thinking of, with 6911s - what do you think? [Invalid or Expired Link Removed]
  6. I

    The DIY Tube Head Thread

    About 90 pounds. Also I'm going to re-do the preamp. What I have now sucks. I'm going to make a hi-gain cascode preamp with two 6922s. Just the preamp will have a gain of 356.2! And a gain dB of 51. I also had to use a 6550 to drive the driver transformer. And speaking of transformers, here's...
  7. I

    The DIY Tube Head Thread

    Here are some final photos of the flagship of my fleet, the awesome, amazing and astounding work of art and love, the world's only DB455 bass guitar tube amp. It took me two months to complete this unique work which I measured at 300Watts RMS. Its power is apparent, its weight incredible, its...
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    The DIY Tube Head Thread

    DB455 testing continues and the only things left to do are: * Receive and install the front panel * Receive and install the Sowter driver transformer * Receive and install the fans * Add shielding For now, its working pretty well. Before this amp, I never had one which would dim the...
  9. I

    The DIY Tube Head Thread

    Here is the DB455 making noise in my lab. It needs some tweaks but it's basically working! And it sounds VERY authoritative through my 18" EV cab... I should have it fully tweaked and within a couple weeks, have it able to clear the effects of our local ice storms... :hyper:
  10. I

    The DIY Tube Head Thread

    DB455 update: My new power transformer should be in today. The last one shorted. So not much has happened in the construction/test department but the hi-voltage power supply will be totally redone. I'll be using an 800V full wave choke input lashup. Should put about 750V on my KT88s...
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    The DIY Tube Head Thread

    Yup, lots of forced air....
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    The DIY Tube Head Thread

    Point taken with the KT88 proximity. I used the largest chassis I could find. There will be 4 fans inside the cab Re: Power resistor. I am tracing an output oscillation problem now. I'll try bypassing the resistor and dropping the input voltage with a variac and see if that takes care of it...
  13. I

    The DIY Tube Head Thread

    The cab arrived yesterday, custom built by: http://stores.ebay.com/SOURMASH-GUITAR-CABINETS?_trksid=p284.m158&_trksid=p284.m158 A beautiful sight to behold!!! :hyper:
  14. I

    The DIY Tube Head Thread

    We each have our areas... I can do tube electronics but I suck as a player. If there are any players near Western Oregon who want to audition a head, let me know.. ;) :hyper: << me :bassist: << player :hiding: << neighbors
  15. I

    The DIY Tube Head Thread

    Remaining tasks: Receive and prep the cab Add 1800pf 10KV KT88 cathode/plate bypass caps Possibly add LEDs to the cathode fuses Install front panel and manufacturer sign Functional Testing Power Testing and measurement Final Assembly
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