8 inch or 10 for a Vibro-Champ build?

Discussion in 'Shock Brother's DIY Amps' started by ArcticWhite, Aug 12, 2019.

Which?

  1. Eight is great

  2. Ten is better

  3. TWELVE

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  1. ArcticWhite

    ArcticWhite Tele-Meister

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    Planning my Vibro-Champ build now.
    Building my own cab, and I'm trying to decide between 8 inch and ten inch speaker.
    I'll be using it at home, or for practice, maybe small gigs with my singer-songwriter stuff. I have several 15 to 18 watt amps already.
     
  2. The Angle

    The Angle Tele-Meister

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    I can't put my finger on how or why, but 10-inch speakers really hit the sweet spot for me. I think everything sounds better through 10s. It's probably psychological, but that doesn't mean I don't hear it.
     
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  3. King Fan

    King Fan Friend of Leo's Ad Free Member

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    For sure 10" is gonna get lots of votes. But the 8" sound is cool too, maybe more home-friendly, more vintage / real, and with a good speaker can be excellent. If you have several 10s or bigger already, you could argue you need an 8" for variety.

    Would it be possible to build / size a cab for interchangeable 8/10 baffles?
     
  4. Area51

    Area51 Tele-Meister

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    With my build I went with a 10, wish I went with an 8. But it depends what your after. I like the breakup when you crank it up better with the 8".
     
  5. Shuster

    Shuster Friend of Leo's Silver Supporter

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    Build it as a head, and every cab is your Oyster:)
     
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  6. schmee

    schmee Poster Extraordinaire

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    If you build it with an 8 ohm output tranny and a 10 inch speaker it will give you a lot more options than 4 ohm and 8".
     
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  7. dougstrum

    dougstrum Tele-Holic

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    Years ago I put a 10" in an old Vibro Champ. Sounded great; it also was more efficient speaker.
    10" would be good choice for a new build.
     
  8. EsquireBoy

    EsquireBoy Tele-Meister

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    I had a 57 Custom Champ reissue, with the 8 inches speaker.
    I’ve sold it for a tweed Princeton clone, which is almost the same amp but with a 10 inches speaker (+ the tone control).
    I liked my little champ very much, but I LOVE my Princeton: It is as if with the Champ I was hearing the speaker breakup more than the amp breakup, whereas with the 10 inches of the Princeton I get the perfect headroom that I need, ie small but not overly limited by the speaker itself.
     
  9. ArcticWhite

    ArcticWhite Tele-Meister

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    Yeah that had occurred to me, and I will probably do it. But is there any downside to putting the 8 inch speaker in the larger cab?

    I'm using an 8 Ohm OT, btw.
     
  10. King Fan

    King Fan Friend of Leo's Ad Free Member

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    8 ohm OT is a good choice.

    What I'm wondering is if the cab actually has to be that much larger. Am I just smokin' or do I seem to recall people stuffing 10s in standard VCs? I dunno all the variables...
     
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  11. GARAGE HERMIT

    GARAGE HERMIT Tele-Meister

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    if you really want to find the optimum size cab try and find this book, it's a bit involved though, DSCF0353.JPG
     
  12. Phrygian77

    Phrygian77 Tele-Afflicted

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    I just built a Vibro Champ with a 12" (tall narrow cabinet that looks like a Musicmaster Bass Amp), sort of a happy accident because I was originally going to build a traditional 8" Vibro Champ. Mojotone sent me the wrong cabinet. I ended up building it with a 5881, a ClassicTone 40-18031 15 watt output transformer, and an Eminence Legend GB128. I used a 6.8k mid resistor like the bigger blackface amps. It's loud enough to gig with, and plays fairly clean in the little restaurant/bar that we play in.

    https://www.tdpri.com/threads/build-10-watt-vibro-champ-1x12-combo.966031/
     
  13. Dacious

    Dacious Poster Extraordinaire

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    If you have an open back cabinet 8 or 10 makes no never mind. For gigging unless it's with acoustic unmicc'd instruments and a drummer with brushes you'll need to mic it.

    I used my VC that way, a mic in front.

    A scratch build, put transformer with 8ohm or both 4 and 8 ohm in.

    4ohm speakers are more limited IMO by voicecoil length but a sweet alnico 4ohm 8" speaker works with a Champ for practice. Weber's Signatures are great, ribbed or flat cone alnico or ceramic.

    Speaker choice in 4ohms is limited.
     
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  14. ArcticWhite

    ArcticWhite Tele-Meister

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    You can stuff in a 10, but it's tight. I'd give myself more room to let it breathe a bit
     
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  15. ArcticWhite

    ArcticWhite Tele-Meister

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    That book is for closed back, and high Fidelity speakers, not open back guitar amps. Ours are a completely different animal.
     
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  16. robrob

    robrob Poster Extraordinaire Ad Free Member

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    If you go with the standard size cab stick with an inch. Have your cab maker add 2 inches to the cab width or height for a 10 inch speaker and more for a 12.
     
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  17. Stratdan

    Stratdan TDPRI Member

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    P2110001.JPG
    I have a Weber P12Q in mine and play it more than my Princeton Reverb. Pretty sure this is a JD Newell cab but I bought it on Ebay in 2002 used with the speaker installed and no markings on the cab but it extremely well made.
     
  18. mabley123

    mabley123 Friend of Leo's

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    Id go for the 12, and put a Celestion Cream/Alnico in it.
     
  19. archetype

    archetype Fiend of Leo's Silver Supporter

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    Right. I've never found a reference for designing an open back cabinet.
     
  20. rickthescot

    rickthescot Tele-Holic

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    I've never had an 8" speaker Amp I was happy with. 10" is my minimum.
     
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