Marshall 1960 "Vintage" cabs...

  • Thread starter Thread starter Nigel
  • Start date Start date
I used Randall Aiken's diagram for Series/Parallel (or parallel @ the jack)

speaker_wiring_switch.jpg


It's neat b/c you can put an extra wire in there to go parallel/series.

As for the rear panel, I simply removed the switch and jacks (two plastic nuts) and put one switchcraft jack in. It's rock 'n roll.

One could use the other open hole to install a switch to go back and forth between the wiring styles.

From Jim @ Scumback on a Gearpage thread - (https://www.thegearpage.net/board/showth ... 895&page=1)

There was a lengthy thread on this at the Metro amp forum regarding wiring 4x12 cabs.

http://forum.metroamp.com/viewtopic.php?f=14&t=17542&st=0&sk=t&sd=a&hilit=series+parallel

Here's the summary of the thread.

series/parallel wiring is darker, richer, more organic sounding for a 4x12.
SBA412series-parallelwiring.gif


Parallel/series wiring (such as your stock 1960 A/B cab with the switch plate that does 8 ohms stereo per side, and 4 or 16 in mono) is thinner/brighter sounding with less bass response. This is the standard wiring setup that Marshall has used since the stereo/switching plates have come out. They also used it in their 4x12 cabs that had one mono input jack (JCM 800/900 to present), including their tall TV cabs.

The end result was tested by the guitarist for Starship and myself. We both came to the conclusion that the series/parallel wiring setup, with 16 gauge (or larger) wire yielded a better 4x12 cab tone than the modern setup of parallel/series.
 
Dallas Marlow":3j0nc67h said:
I've got one of these and wanted to do this as well, does anyone have a wiring diagram for this speaker cab, and for those that got rid of the switch what did you use to cover up that huge ass square hole in the back haha?
I use the same jackplate, I just remove the pc board and install the jacks on the same plate so it looks almost the same. Only the switch in the middle is missing. The 2nd jack I can use for chaining if I need to.
These are already wired series/parrallel stock. you can follow the stk wiring or use the above schemmy ;)
 
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