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  1. V

    Wrecking Ball lights up and then dies after applying power

    Also, make sure there's nothing stuck to the board like this.
  2. V

    Wrecking Ball lights up and then dies after applying power

    That's not even close to enough my dude, this thing pulls 700mA from a 12V supply when it's fully warmed up, which means to get it warmed up I would recommend at least 800mA, but ideally 1A if you can get it. EDIT: also don't power it up with the NE555 removed, it causes the MOSFET to overheat.
  3. V

    Wrecking Ball lights up and then dies after applying power

    What power supply are you using?
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    Warwick Hellborg preamp transformer question

    Looks to me like those are the letter O and not the number 0. So possibly an abbreviation for positive and negative Output voltage? Reasonable to assume that's the rail voltages for the NE5532
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    Bring out yer Diptrace

    I dunno. This thing. It's a pedal or something.
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    Warwick Hellborg preamp transformer question

    Quick update on this, Haufe has been sending me another email every few days asking for more little bits of information about who I am and how I plan to use these. They still haven't sent me a quote for them.
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    Tayda Discounts?

    True, that's why we still shop there even without the coupons, but they used to be even more discounted.
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    Tayda Discounts?

  9. V

    Nobelium build done. Thin sounding DI output

    I mean you basically already did, if a multimeter set for resistance is showing a high resistance or an open, then the primary of the transformer is damaged. So if you want to double check obviously that's not a bad idea, but I trust your readings. I've had this a couple times as I've tested...
  10. V

    Warwick Hellborg preamp transformer question

    You're probably right. Haufe asked for a bunch of my information so they can set me up as a customer in their system, then they can process a quote for me for a prototype/evaluation run of 10 units.
  11. V

    Nobelium build done. Thin sounding DI output

    DCR at pins 4-5 should be around 2.4kΩ, if you're reading more than that then it could indicate damage to the transformer. An open primary would certainly result in a very low/thin XLR output. I'm all out of transformers at the moment but I'm expecting to get a bunch more in about 2 weeks, I...
  12. V

    Bring out yer Diptrace

    I held off on the order to get another design in with it, expected delivery date for the boards is tomorrow, I will certainly find out and report back.
  13. V

    Steddi, Go! - simple tube D.I.

    Not yet, I should probably get going on that.
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    Warwick Hellborg preamp transformer question

    I'm curious enough to try a couple of the Haufes out, so I asked them if I could make a small batch order for evaluation. I'll let everyone know if it works out and I can make a handful available for those that are also curious.
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    Warwick Hellborg preamp transformer question

    So apparently Haufe was just waiting for some hack masquerading as a company to shoot them an email. They sent me a datasheet this morning. My suspicion was correct, the ST-8161 is basically a D.I. transformer, which if you run it "backwards" becomes a mic input transformer. The frequency...
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    Favorite boost in front of RAT?

    This is going to sound unorthodox, but I've always enjoyed using a Klon to boost a Rat.
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    Warwick Hellborg preamp transformer question

    Very well could be. Hopefully someone in such a position will come along and pose such a question to Haufe a few minutes ago.
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    Build Docs Archive?

    The oscillation issue is only an issue with the gain high, so lower gain tubes would definitely help. 12AU7 probably wouldn't sound great though. The buffer footswitch takes care of it though, and you should be able to run it with 12AX7 with no oscillation if you're using the buffer footswitch.
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    Warwick Hellborg preamp transformer question

    Fair enough, so I guess the next question is how much would they charge for 100 units, and would they then include the datasheet if you were to purchase them?
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    Warwick Hellborg preamp transformer question

    Looks like it's essentially a D.I. transformer. THAT1512 is a mic preamp IC so it needs a balanced input, which the 1/4" isn't. The XLR jack is already balanced, but because they wanted the XLR and 1/4" to share the -20dB pad (and as you speculated possibly for some tonal characteristics) they...
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