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Diaz Texas Ranger Schematic

Discussion in 'The Stomp Box' started by Rama Satria, Feb 11, 2020.

  1. Rama Satria

    Rama Satria TDPRI Member

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    Diaz Texas Ranger.jpg

    Substitute transistor BC547 or BC547A or 2N3904

    hFE gain from 220 to 300
     
    Last edited: Feb 12, 2020
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  2. uriah1

    uriah1 Telefied Gold Supporter

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    hmm
    Maybe I could even make that happen,.
     
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  3. Rama Satria

    Rama Satria TDPRI Member

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    It's an easy one to make. Almost as easy like making a Fuzz Face. Really enjoying this one. Sounds fantastic!:)
     
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  4. Switchy

    Switchy Tele-Afflicted

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    Where do the input and output jacks go?
     
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  5. uriah1

    uriah1 Telefied Gold Supporter

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    Guessing at the 100k resistors..have to ask wife, she is EE
     
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  6. beyer160

    beyer160 Friend of Leo's

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    Diaz Texas Ranger.jpg
     
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  7. Rama Satria

    Rama Satria TDPRI Member

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    Layout

    Diaz Texas Ranger Layout.jpg
     
    Last edited: Feb 18, 2020
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  8. trxx

    trxx Tele-Afflicted

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    Which transistor are you using in yours? What amp are you using it with?
     
    Last edited: Feb 19, 2020
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  9. Rama Satria

    Rama Satria TDPRI Member

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    Hello. I use a BC547 transistor. The gain hFE I use is around 250.

    I use any amps. For me personally I like solid state amps better than tube amps. I do not really like the sag of a tube amp. A solid state amp somehow is tighter. Albert King used a Roland JC120.

    With solid state amps I would push it with an old Marshall Blues Breaker pedal, the big black one which stays ON all the time. The volume from the amp cranked around 7-8, if it has a master volume it is set at full and the volume around 7-8. From there I do also have the volume from the Marshall Blues Breaker pedal acting as the "master volume" like an attenuator.

    Signal chain ---> Amp - Marshall Blues Breaker - Diaz Texas Ranger - Guitar.
     
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  10. 11 Gauge

    11 Gauge Doctor of Teleocity

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    The rotary switch for the input cap selector might be a bit confusing for the DIY newcomer.

    Personally, I'd suggest just going with the .005uF (.0047uF) if someone just wants a pretty standard treble booster effect, or maybe a DPDT toggle that adds another .005uF in parallel, thereby giving the high and mid options.

    ...Or, alternatively, you could do two .01uF caps in series, and then you can use a SPST to short out one of them. This would do the same thing as above - switch open would be high, switch closed would be mid.

    You could potentially even get a pot that has the switch on it, keeping everything to a neat 1 knob build.
     
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  11. trxx

    trxx Tele-Afflicted

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    Thanks. I have read that the Diaz Texas Ranger came with both germanium and silicon transistors. Do you know anything about that and which ones?
     
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  12. 11 Gauge

    11 Gauge Doctor of Teleocity

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    Assuming Diaz wanted to keep it to NPN, I'd think the germanium would be the aforementioned NTE103.

    I'd think that the actual silicon transistor used might be less important, probably just with a preference for a lower hFE.

    ...And assuming germanium is used, you'll obviously want to test for leakage, too (and probably sort for gains). It looks like the cheapest you can get a NTE103 for is around $8 USD, not sure about shipping. For that reason, it probably makes a lot more sense to first try and build one of these with one of the silicons mentioned, or something with a similar hFE.
     
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  13. trxx

    trxx Tele-Afflicted

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    Yea, building with silicon first does sound like a good idea. I don't know how it goes with finding good NTE103's, but it seems to be a general pain and expense finding good old germanium transistors.
     
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  14. mikestearns

    mikestearns Tele-Holic Silver Supporter

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    What makes this different from a standard Rangemaster clone?
     
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  15. 11 Gauge

    11 Gauge Doctor of Teleocity

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    It uses an NPN transistor instead of PNP, and the input cap is switchable, to make it more than just a treble booster.
     
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  16. mikestearns

    mikestearns Tele-Holic Silver Supporter

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    Awesome. I've been curious about it since I saw it on Isaiah Mitchell's board in the Earthless rig rundown, but couldn't figure out why it commands such a high price.
     
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  17. uriah1

    uriah1 Telefied Gold Supporter

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    Fulltone just came out with their ranger.
    That is a big price.
     
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  18. trxx

    trxx Tele-Afflicted

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    I'm seeing multiple versions of this pedal at high prices. Are they using rare transistors, or is this just a milking for 'whatever the market will bear'?
     
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  19. 11 Gauge

    11 Gauge Doctor of Teleocity

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    The funny thing is, there's no mention of what exact transistor is being used.

    In this case of this one, I can only guess that the high price is due to the multi-position rotary. Well, it has a charge pump, but there are other PNP transistor devices using one, and they cost a bit less, like this Park Fuzz Sound.

    Anyway, for at least two decades now, there's been a DIY web page on how to easily rewire pedals like the Fuzz Face and such, that use PNP transistors, to use a positive power supply: http://www.muzique.com/lab/fuzzface.htm. The complexity of a charge pump really isn't necessary.

    Well, the Ranger has an internal bias trimpot, but lots of pedals have such similar things.

    Maybe it's because of the jewel lamp? Not really sure.

    As far as the 6 position rotary goes, IMO I'd be willing to bet that most folks will probably end up using just one or two settings, and pretty much leave it there. And if you set it to 'full' and like what you hear, it could probably be argued that you probably don't really want or need a Rangemaster type of boost at all.

    IMO, single transistor boosts are such an easy DIY project, and are so easily customized/modified for the individual's particular wants and needs, that they're probably the last type of pedal to spring big bucks for. Also IMO, building them can be lots of FUN.
     
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  20. Rama Satria

    Rama Satria TDPRI Member

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    The rotary switch of a Diaz Texas Ranger unit looks like this. 3 position with 2 poles.

    Screenshot_20200114-130953.jpg
     
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