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Horio

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Posts posted by Horio

  2. digital attenuator

    in Do It Yourself

    Posted

    sweet

    will drop this layout into the kgitsojc board when i finally

    decide what switching relays to use.

    Kevin, so will the digital attenuator be built into the kgitsojc board, or will it be separate and wired to the preamp? I originally thought it was going to be the later.

  9. i'm on a roll... the kgsshv

    in Do It Yourself

    Posted

    I think Mouser may stock these parts. Are these the same ones?

    Has anyone besides Livewire had trouble with the 100 mA rating for the 485 volt secondaries? I am wondering if the recommended transformer is beefy enough

    Also anyone have an alternative source to bdent for the 2SC4686A? They are nil stock until october

  17. KGSSHV, Balanced Dynahi Rev A and DynaFET board run

    in Do It Yourself

    Posted · Edited by Horio

    Just to make it crystal clear, the quantities are for number of board "sets" and not individual boards correct?

    So if you want to make a KGSSHV amp, you would need to mark yourself down for just (1) KGSSHV. It seems like some people may have accidentally marked themselves down for number of boards needed, and not board sets.

  23. Should I give up on the K1000?

    in Headphones

    Posted

    What's interesting about the Cary? What about the Bottlehead Paramount 300B in comparison?

    I had the chance to listen to Doc B's K1000's run off his mono-block Paramount amps at a meet a few months back. It was a seriously great sounding combination in my opinion (part of which may have been due to his fancy reel-to-reel setup). It was that setup that led to my impulsive purchase of a pair of K1000's. That and n3rdling's O2/Blue Hawaii setup where the highlights from that meet.

  24. Should I give up on the K1000?

    in Headphones

    Posted

    That's a pretty wild impedance graph. You find yourself a pair of quad 57's?

    With the little I know about the Firstwatt line, I would guess a F5X (balanced F5) or a Aleph J-X would be the way to go. With that nice spike around 80-100hz, I'd be afraid of the FW amps running out of voltage to swing though. I guess you could get some monster sinks, cascode the amps and run them at a higher voltage...

    How sensitive are the quads?

  25. Should I give up on the K1000?

    in Headphones

    Posted

    Leonardo, you are a lucky man if you have access to some nice equipment for chassis work. I only wish I had that sort of access for my DIY T2 panels.

    If you want a good learning project to help build your confidence, take a look at the Cmoy or Mini^3 portable headphone amps. Both are inexpensive to build and will teach you many valuable things for a Firstwatt build (like creating parts lists, selection parts, populating a PCB, etc). These projects are the starting point for many DIY'ers.

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