Ad Widget

Collapse

Announcement

Collapse
No announcement yet.

Vox AC30/ 6 (TBX). Add an MV ?

Collapse
This topic is closed.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Helmholtz
    replied
    Originally posted by Pedro Vecino View Post
    I consider the Cut control to be essential in this amp,...
    Maybe to some but certainly not for me.
    I played my AC30 for around 10 years and never used or missed the cut control.
    I was after the early Rory Gallagher strat sound. Also used a Hornby-Skewes treble booster.
    The cut control can only take away treble - nothing I could use.
    In fact the silver Alnicos in that 1970 AC30 were rather dark sounding (less bright than earlier Vox Alnicos) but incredibly efficient.
    I still have the amp but changed the speakers to mid-sixties silver Alnicos which are brighter but less efficient.

    Leave a comment:


  • Pedro Vecino
    replied
    I consider the Cut control to be essential in this amp, and even more so if there is an intention to install a master volume. It is practically the only element that allows you to center the harmonic content since the equalization itself does not allow it and also loses effectiveness with certain levels of distortion.

    The best method for me is to replace the bias feed resistors (220K) with a double potentiometer with the cut control connected before it. Normally I use the low sensitivity input of the vibrato channel for this (quite a bit of work since it is necessary to accommodate the block of the six input jacks) but in this case the amp (Korg AC30) had a very bad master volume installed on the back and I used its hole.

    Click image for larger version  Name:	AC30Master3.jpg Views:	0 Size:	1.14 MB ID:	1003028
    Last edited by Pedro Vecino; 08-20-2024, 01:03 PM.

    Leave a comment:


  • J M Fahey
    replied
    Yes, the Cut control is not a regular Tone control but more like a PPIMV, only affecting Highs.

    Shortimg the series cap makes it a full range attenuator.

    Leave a comment:


  • Helmholtz
    replied
    Simple solution:
    Shorting the 4n7 cut capacitor (C1) turns the cut control into a MV.
    That's what I did with my AC30 in the 70s.

    Leave a comment:


  • Sea Chief
    replied
    I -think- this is the correct schematic:

    https://www.drtube.com/schematics/vo...60-02-iss5.pdf

    Thanks, SC

    Leave a comment:


  • Sea Chief
    replied
    I'll try & add the schematic, but here is the model (the closest reissue to the original circuit), showing the control panel/ cut knob.

    http://www.voxshowroom.com/uk/amp/ac30tbx.html

    Thanks, SC

    Leave a comment:


  • Sea Chief
    started a topic Vox AC30/ 6 (TBX). Add an MV ?

    Vox AC30/ 6 (TBX). Add an MV ?

    Hi chaps,

    Amp: Uk-made (marshall factory, mid 90's) AC30/ 6 TBX

    I've read these are able to have an MV added. Is this possible, if so what would be the best method? Possibly using the cut knob-?

    I'd like to be able to dial in some overdrive without taking out 1/2 of Ceredigion: so I think adding an MV might be better to try, before later maybe adding the 'more intrusive' VVR mod. One step at a time. An MV might suit me better, to use at low volumes- as I get older I can't seem to cope with volume as I used to.

    Thanks, SC






gebze escort kurtköy escort maltepe escort
pendik escort
betticket istanbulbahis zbahis
deneme bonusu veren siteler deneme bonusu veren siteler
mobile casino no deposit bonus
deneme bonusu veren siteler bonus veren
deneme bonusu veren siteler deneme bonusu veren siteler
bahis siteleri
deneme bonusu deneme bonusu veren siteler Canlı casino siteleri
mobilbahis rokubet
güncel deneme bonusu
deneme bonusu veren siteler
deneme bonusu veren siteler deneme bonusu veren siteler
deneme bonusu veren siteler bonus veren siteler
bonus veren siteler
deneme bonusu veren siteler
deneme bonusu
casino siteleri
bodrum escort
deneme bonusu veren siteler
bahis siteleri
casibom< giriş/a> betturkey
Working...