1966 Fender Twin Reverb
 SN# A04351
 Date Code PG
 Circuit AB763
 Original Speakers 2-12" Jensen C10N's

 Overall dimensions of the amp to the nearest 1/8th inch are 26x20x10.

 The depth ranges from 8-3/4's on top to 9-1/2 at bottom of slant angle in front to 10 inches at the bottom of cabinet.

 Top piece of Tolex runs 24-1/2" across and the overlap is 1/2" over the side tolex.  The side tolex extends 1-1/4" onto the top of the cabinet.

 Back plates are 24-1/2" long.  The bottom piece has a height of 5-1/8" and is 1/4" thick.

 The top plate is 6" high and has 1" across at 6" and then slants for 2-1/2" inches down - approx 17-1/2" across and forgot to measure height there and slants up 2-1/2" and then 1" at 6" of height again.  If you need the low measurement let me know.

 Hope this helps.

 A couple of interesting notes on the Twin Reverb that you might already know.

 It was originally a 100 watt amp when introduced and was used by the likes of Mike Bloomfield wide open to get that great sound with his Sunburst while melting the voice coils on the Jensens. I'm sure many others followed suit so Fender put a resistor in the output to cut the power back to a safer 85 watts.

 It's interesting to note that loudspeaker development followed amp
 development as the louder and bigger the amps got the speakers had to be beefed up. I'm sure after honoring a bunch of blown speakers the
manufacturers had to get back to the drawing board for higher wattage amps.
 JBL and Altec were among the later suppliers for selected Fender amps.

 The reason I bring this up is the history of Altec and JBL which were
 certainly the highest wattage speakers of the Era.  Both companies were started by James Lansing which wasn't even his real name but of course have forgotten by now.  He was an accountant like Leo Fender and also was an electronic tinkerer.  The Altec Lansing company was really a consortium of electronic manufacturers oriented toward the early movie sound industry, "Voice of the Theatre" being one of the products.  Altec was an abbreviation for "All Technical" for the companies involved.  Altec's biggest endorser has to be Santana as he has always used them in his 1/12" Lead Boogie's for that characteristic sound.

 In the late 40's he wanted out of Altec and was allowed to use his real (actually changed) name, James B. Lansing to differentiate between the two companies.  He actually died in the late 40's less than a year after starting the JBL Company and way before the speakers of the 60's were designed to bear his name.  His original high power speaker designs were used as the basis for the later musical instrument speakers.

 Just an interesting tidbit I found out by researching about a year ago as I was always confused on who, what and why of the Lansing speaker era.

 My Twin has a couple of 60's JBL D-120's in it now and weighs of course a ton.  I put the Jensen C10N's in an old Pro Reverb that I got without speakers as I figured they'd last longer with a 40 watt amp than with the Twin.

 Hope this helps and if you need further help let me know.

 Bruce Faerson