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Marantz Production Numbers
1954 - 1980

 

 

Luckily Marantz serial numbers include the information needed to calculate production numbers and more !
 

There are two basic patterns.

1. Earlier units proceed in pure sequential order starting from zero or a specific starting number as follows: 0 for models 10, 24  1000 for 1, 2, 3, 4, 5, 8, 8B, 9, 10B, 15, 16, 18, 19, 20, 20B, 22, 25, 26, 27, 28, 29, 32, 105, 110, 115, 115B, 120, 120B, 125, 150, 240, 250, 250M, 500, 510M, 1200, 2010, 2015, 2200, 2240, 2245, 2270, 2440, 3300, 3600, 3800, 4060, 4100, 4220, 4230, 4240, 4270, 4415, 4430  10000 for 7, 7C, 7T  100000 for 2235, 2250B. Also some later units have a "J4" suffix which indicates the unit is equipped with a universal power transformer. Inside a terminal strip allows the unit to be switched between 100V, 120V, 200V, 220V, 240V voltage sources.

2. Later units are sequential but within only each production run. Example: 93N040085. In this case "04" indicates the fourth production run and the last four digits represent the sequential production number within this run.  When this method was adopted a letter was added to indicate the region of the world for which the unit was primarily intended to be sold: A = Australia  C = Canada  E = Europe  K = Far East  N = unknown, usually found in Europe  P = Post Exchange  U = USA. It appears that most if not all non - USA models include an external voltage selector which allows usage anywhere in the world. Later a two digit prefix was added to replace the manufacturing date stamp that was formerly found on the chassis. The first digit indicates the year, we believe the second digit indicates the six week period within the year.

The following models overlap both numbering systems: 112, 140, 1030, 1040, 1060, 1070, 1090, 2215, 2215B, 2225, 2230, 2235B, 2275, 2325, 4300, 4400. When the change was made the production run number started at the correct number (indicating they were keeping track).

 

Listed below is our initial report of production numbers. As the database grows so will the accuracy !

 
Model Production accurate to +/-
     

early sequential serials and crossover

     
1 8882 16.67%
2 5045 25.00%
3 2911 50.00%
5 1983 25.00%
7 11991 4.35%
7C 10671 12.50%
7T 8335 11.11%
8 9685 33.33%
8B 10456 9.09%
9 2040 16.67%
10B 4650 6.67%
15 14937 16.67%
16 4018 33.33%
19 3165 50.00%
20B 2618 25.00%
22 8165 25.00%
27 7868 50.00%
32 2239 25.00%
105 69039 33.33%
110 3438 50.00%
112 106287 33.33%
120 63398 14.29%
120B 531 50.00%
125 396 50.00%
140 578 50.00%
150 65228 20.00%
240 6859 25.00%
250 10104 25.00%
250M 4928 33.33%
510M 1562 33.33%
1030 73048 50.00%
1040 9488 50.00%
1060 56019 11.11%
1070 9135 50.00%
1090 622 50.00%
1200 2273 50.00%
2010 56735 16.67%
2015 54430 14.29%
2215 776 100.00%
2215B 147597 50.00%
2220 58072 33.33%
2220B 70519 25.00%
2225 8372 20.00%
2230 185266 5.88%
2235 9810 20.00%
2235B 14660 25.00%
2240 12942 16.67%
2245 82721 6.67%
2250B 3717 16.67%
2270 84484 3.45%
2275 51359 11.11%
Model Production accurate to +/-
     
2325 109262 11.11%
3300 6280 16.67%
3600 7344 33.33%
4220 7993 33.33%
4230 10791 33.33%
4240 62216 33.33%
4270 86276 16.67%
4300 95692 33.33%
4400 8033 20.00%
4430 57258 33.33%
   
later production run only serials
   
104 10413 50.00%
1060B 391 50.00%
1152DC 1508 50.00%
170DC 2051 50.00%
2100 10878 12.50%
2110 5013 50.00%
2120 804 50.00%
2216 10208 16.67%
2216B 6865 16.67%
2218 6831 25.00%
2226 11785 16.67%
2226B 19722 12.50%
2238 23954 20.00%
2238B 35352 10.00%
2252 9232 50.00%
2252B 9721 20.00%
2265 4485 33.33%
2285 6149 33.33%
2285B 4864 8.33%
2285BD 244 20.00%
2330 2943 12.50%
2330B 1780 14.29%
2330BD 184 50.00%
2385 5345 5.88%
2500 1659 6.67%
2600 951 8.33%
3250B 1860 50.00%
     

Research by AMK Products, Inc.

www.amkproducts.com/marantz.htm

 
   

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