Last edited by vintagekiki; 11-21-2012 at 02:52 PM.
Is the AC30HW2X hand wired in here somewhere?
I don't see it.
I might want to add some of the features to my TBX.
AC15HW1 hand-wired combo amp; one Celestion G12M Greenback speaker
AC15HW1X hand-wired combo amp; one Celestion Alnico Blue speaker
AC30HW2 hand-wired combo amp; two Celestion G12M Greenback speakers
AC30HW2X hand-wired combo amp; two Celestion Alnico Blue speakers
AC30HWH hand-wired head
Do you have a link for the Valvetronix VT80+ schematic ?
Last edited by tune881; 05-06-2013 at 07:34 AM. Reason: Question unclear
Vox Deacy Amp - a review
VBM1 Service manual
Vox Brian May Special VBM1 Owner's Manual
Vox Royal Guardsman V1131
Vox Super Beatle V1141
Vox Westminster V118
Vox Pathfinder V1011
Vox Buckingham V1121
Vox Reverberation Unit
Shematics for Tonelab ST?
Schematics is drawn on the basis of pictures from the following links:
Does anyone have or know where to find schematics for the Vox Essex?
Where can I find the schematic for the Vox AC4 V101 model, manufactured by Thomas Organ in Sepulveda, CA? It's the late 1965, early 1966 model with top boost (12AX7 instead of EF86). It's the one described first, here.
Basically amplifiers Vox Pathfinder V1 (V101) and Vox UL 705 schematic are very similar amplifiers.
Unfortunately I was not able to see them, so the schematics is drawn on the basis of various photos from the Internet photos of type Look "Under the Hood"
Based on my 30 years of engineering experience, I tried at all the photos to find a common point, and as a result of the schematics that is located in front of you
Allow minor glitches during the conversion layout amplifier in the schematics.
Some of the links used when creating schematics
Attachments "Under the Hood"
Vox UL 705
Jennings Musical Industries JMI 4; Vox Pathfinder V1 (V101)
Do not mind the possible grammatical irregularities, translation is the machine https://translate.google.com/
Last edited by vintagekiki; 11-26-2015 at 09:09 PM.
That's great information. Thank you!
I am not familiar with that amp but found this:
Kensington Bass V124 - 22 watt RMS
Kensington Bass V1241 - 22 watt RMS = Kensington Bass V124 + G tuner
Essex V4, V104, V1041 - 35 watt RMS
Essex V1042 - 35 watt RMS = Essex V1041 + foot switch "Tone X "
Essex V1043 - 50 watts RMS = Essex V1042 preamp + G tuner + 50 watts RMS Power Amp Module
Westminster V118 - 60 watts RMS
Westminster V1181 - 60 watts RMS = Westminster V118 + G tuner
Westminster V1182 - 120 watts RMS = Westminster V1181 preamp with 120 watts RMS Power Amp Module
Sovereign Bass V117 - 60 watts RMS = Westminster V1181 with Four Oxford 12T6 12 Vox Gold Bulldog 12"
60 Watt RMS Power Amp Module
120 Watt RMS Power Amp Module
Schematics Vox Kensington V1242
Schematics Vox Westminster V118
Last edited by vintagekiki; 11-27-2015 at 10:31 PM.
thanks for this encyclopedic compilation / an amazing resource !
Q: is the AC30CC1 circuitry identical to an AC30CC2 (with the exception of the 1 spkr vs 2...)
AC30 Custom Classic schematics
Amplifier schematics are identical, different is only in the number and type of the connected speakers (see page 5 owner's manual) to the output transformer (see AC30 power amp on the schematics)
In both cases, the output select switch (SW6) is in position 16 ohm
AC30CC1: 1x12" combo with a custom voiced VOX NeoDog speaker
AC30CC2: 2x12" combo with a pair of custom designed GSH12-30 speakers
AC30CC2X: 2x12" combo with the world revered Celestion “Blue” 15 watt AlNiCo speakers
Vox AC30 Custom Classic owner's manual
Schematics Vox Satchurator distortion pedal of Joe Satriani
I have fixed several of the VT-30 models. The issue with all of them has been that an electrolytic capacitor with the wrong value (.47 uF) is used in place of a 0.1uF Ceramic capacitor in either c17 or c16 right side of the power amp chip just in front of the green resistor. Some of the amps I've fixed, this capacitor literally exploded spraying paper pulp and melted metal around the inside of the amp. When that happens, the output is very low and distored, because only one side of the output is generating. In other amps, the problem is hissing and squealing, but the capacitor appears intact. They always test bad after removal. I replace them with the CORRECT value CERAMIC capacitor and the problem is much improved.
I have been unable to find any other reference to this defect.
Thanks for allowing me to post it here.
Not too sure if this could be termed a "Factory' defect.
C16 & C17 are power supply bypass caps.
Placing Electrolytic caps in those two positions is fine.
As long as the polarity is observed.
While a ceramic cap would be less likely to explode, they do have failure mechanisms of there own.
You very well may be seeing a bad batch of e-caps.
(From the infamous late 90's 'bad cap' fiasco.)
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