Marshall Cabinet Differences
Between the 1906A, 1960AV, 1960AC
Note: the "B" (bottoms or straight) versions of these cabinets are also available.

1960A or 1960B

(loaded with 75 Watt, 12" Celestion G12T-75):

The 1960 a produces a loud, well-focused and uncluttered sound with a tight, full low end and a crisp, bright top. It projects well across the guitar's entire tonal range and its clarity makes it ideal for players who like using a fair amount of effects such as reverb, chorus or delay as it doesn't "mask" or "muddy-up" such FX. Its all-around versatility and relatively "uncolored" nature makes this the best selling cabinet of all time. The 1960 b (bottom) does sound like it has a little less high end and and a little more low end "punch" although the speakers are identical. The 1960A and B (bottom) can be used in mono or stereo mode. In stereo mode each pair of speakers is wired for 8 ohms and you use the two inputs in the back of the cabinet. There is a switch on the jack plate to change to mono mode. Then you can plug into either the 4 ohm input on the left (for use by itself) or the 16 ohm input on the right (for use in a stack). The 1960B has a little more low end than the angled version, but many people do not think it looks as cool as the slant.

1960AV (or BV) (loaded with 70W, 12 inch G12 "Vintage" Celestion speakers):

The 1960AV (and BV) has a thicker, warmer sound than the 1960A with a fat, well-defined midrange and a more rounded high end that sparkles nicely while not being overly bright. It also has a good low end "chunk" which never gets "boomy." Some have called the Vintage's  bass kick "tuneful." Although the low end of the 75 Watt Celestion used in 1960As and Bs is more "in your face" (or should I say, "chest"?!) than the Vintage, it might interest you to know that the latter is the first choice of modern metal "crunch" masters such as James Hetfield (Metallica), Dave Mustaine (Megadeth) and Dino Cazares (Fear Factory)...all of whom use 1960BV cabs.  The 1969AV can also be used in mono or stereo (see the above description).

1960AC (or AX)  (loaded with G25M Celestion 25W "Greenbacks"): 

Tonally, this falls somewhere between the 1960A's brightness and the 1960AV's warmth. Greenbacks have a very distinctive sound with a fast, snappy response that adds detail and dynamics to both clean and distorted playing. Obviously, for a vintage/Hendrix type tone, Greenbacks are the way to go. Heavily distorted lead lines sound extremely full too, but when these speakers are driven really hard, they can get rather piercing and thin. Due to the fact that a 100W Marshall amp will kick out far more than 100 Watts when cranked to the max, we do NOT recommend a 100W head is used with a 1960AC or BX as a half stack, if the head is going to be turned up to "eleven!" (unless a Powerbrake is being used, of course). Such a set-up might sound wonderful for a short period of time but there's a fine line between clever and stupid. Doing this crosses it...unless the user doesn't mind the inconvenience and expense of replacing blown speakers! The 1960AC and AX cabinets are mono only.  

AVT 412 A/B  (angled or straight) 

(loaded with newly designed 50 Watt, 12" Celestion - Extended Bass Response speakers): 

Available in angled (AVT412a) or straight (AVT412b) baffle configuration.

Compact 4 x 12, 200 Watt power handling capability, 8 Ohm, mono cabinet loaded with 4 - 12 inch 50 Watt Celestion Extended Bass Response speakers (specially designed and voiced). These new cabinets are designed to replicate the sound of a full-sized 1960 a or b cabinet, but in a more portable package. 

The new AVT412 cabinets are designed to compliment the new AVT50 and AVT150 amplifiers with a solid punch and tight low end response. These cabinets are a little smaller and lighter than their big brother 1960 series cabinets, making them easier to cart around.

Boasts eye-catching, gold piping.

MG 412A/B (angled or straight) 

Compact 4 x 12, 120 Watt power handling capability, 8 Ohm, mono cabinet.
Available in angled (MG412a) or straight (MG412b) baffle configuration) loaded with 4 - 12 inch custom voiced and designed Marshall 30 Watt speakers.
Compact, portable cabinet, with very tight bass response. These cabinets are a little smaller in size than the 1960 cabinets and about half the price.
Designed and voiced for use with the MG100RCD, MG80RCD but can actually be used with many other amplifiers.