Moderators Travis In Austin Posted November 6, 2022 Moderators Share Posted November 6, 2022 [Originally posted by GromLakeArea51 on Jan. 30, 2016 in "2 Channel Section. Moved here as many questions raised in the "Ask The Historian" Section are answered by this "Codex."] There has always been a considerable interest in the serial codes, options and the history of the original Heritage series (Klipschorn, LaScala, Belle, Cornwall and Heresy). As a reference source for the collectors, and those interested in the vintage Heritage "stuff", below is the V.4 that covers the Heritage series through ~2008. Note: Things have changed, new versions are brought to the consumer, in terms of cabinets, crossovers, horns, etc. It's the originals for which so many questions are asked! Along with many others with Klipsch and Heritage owners who contributed to the document, here is an up to date version which covers Heritage up through 2008. Attached also is a .pdf file for vintage Heritage owners (and those looking at the older versions) to print and keep as a reference source. ____________________________________________________________________________________________________ KLIPSCH HERITAGE SERIES HISTORICAL REFERENCE DATA (V.4 – 27 January 2016): SECTIONS: GENERAL READING HERITAGE MODEL & SERIAL LABEL CODES SPEAKER TYPE CODES SPEAKER WOOD/FINISH CODES SERIAL NUMBER CODES DRIVER CODES DRIVER TYPES BY APPLICATION (Part-2) GRILLS TYPES & CLOTH CODES (Part-2) LOGO DESIGNS (Part-2) HERITAGE PRODUCTION NOTES & TIME LINES (Part 2 I. GENERAL: 1. This information generally applies to the historical Klipsch Heritage Series; but also includes some selected information on finishes, grill cloth options and emblems/ logos used on certain later models. 2. The data is generally correct; the author assumes full responsibility for errors. 3. Sources include, but are not limited to: Discussions, data reviews, and corrections by Klipsch employees; Discussions and physical data provided by owners of Klipsch speakers; independent technicians and sources specializing in Klipsch; Klipsch forum threads (extensive source material is available); Klipsch reference documents, information sheets, data specs, time line sheets, etc. Direct examination of Heritage series products. Visits and discussion at the the factory in Hope, AR. 4. Corrections, additions, and in particular photographs, are most welcome, and as Klipsch owners and forum members contribute additional data, the document will be updated. II. READING THE KLIPSCH MODEL & SERIAL LABEL CODES: 1. All of the "labels" through 1990+ are functionally similar. The Heritage series until 1984 were relatively simple: they were hand written, and first line was the model and wood/finish type, and the second line was the serial number (serials discussed further below). 2. Starting in 1984 and continuing until approximately 1988, the labels were similar, however used a "stamped" serial number identification below the model & finish code. By 1988-1989, the labels were "computer" generated, with the model, finish and other coding in a second "line". EXAMPLE: KC-BB 15T252 This tag would be for a Klipschorn, Type-C (non-"collared"), birch, black lacquer finish, serial number: 15T252 (made in 1979) III. HERITAGE SPEAKER TYPE CODES: ** Does not include the "Rebel" or "Shorthorn" series. C = Cornwall CD = Cornwall "decorator" with flush motor board and no grill BK = Belle Klipsch H = Heresy HD = Heresy "decorator" with flush motor board and no grill LS = La Scala KB = Klipschorn - Model Type B, "collared" KC = Klipschorn - Model Type C, no "collar" KD = Klipschorn - designer type (no grill, made through April 1987) IV. HERITAGE SPEAKER WOOD/FINISH CODES: 1. Until the late 70's-early 80's (and again in 2008 on Heritage models), customers could special order a number of exotic veneers. 2. It should be noted that until May, 2001 there were almost 100 different finish, grill cloth, and riser 'combinations' or variants that could be ordered for the Heresy’s and up to 75 versions of the Klipschorn. 3. In the mid-late 90's, Klipsch generally ceased most special order veneers and raw birch was also discontinued on most models, except Heresy-II's. 4. Material for raw birch is/was Georgia-Pacific cabinet/furniture grade 7 ply (5 inner standard grade plies and the two outer very-fine grade plies). 5. Risers for the Heritage series were originally optional, and there was a long base for horizontal placement of standard Cornwall's. 6. Heresy risers were generally "straight" until the late 1980's, and were still an option until the late 90's. In the late 1980's the "slant" style became the general standard. Slant risers appeared in the 1970's on Heresy-Is, but are not seen often. Currently the US version Heresy is shipped with slant riser, elsewhere in the world they can be ordered with or without the riser. 7. "Oiled" finish refers to the factory application of a high quality furniture grade wood oil that fills the pores of the wood and seals the finish. The type of oil is similar to a Watco "danish" or "rejuvenating" oil. Oiled finishes require a routine "oiling" with a light non-buildup type of furniture grade wood oil. 8. "Lacquer" refers to the application of one or two thin coats of a clear semi-gloss lacquer sprayed on the cabinet and motor board prior to installation of drivers. That lacquer was obtained from various vendors, and as of 2013, is a #40 sheen, semi-gloss lacquer from Valspar/OPEC. Lacquer finishes only require a routine wiping off with a clean dry cloth to maintain the finish. 9. For "Black Lacquer" finishes, the factory used a flat black lacquer primer, then #40 sheen black lacquer, with a clear #40 sheen to protect the black finish. 10. Generally, most veneered Heritage products had the rear panels/ sections sprayed with black lacquer primer. Starting in late 1983 and continuing to this day, the rear panels of the Heritage models are now sprayed with a coat of "textured" semi gloss, and a top coat of semi-gloss black. 11. An option to have raw birch stained was also used, but not often seen. The stain was usually applied by spraying, and the serial number stickers generally indicated this option. Example: H-WS would have been a Walnut stained Heresy made from "raw-birch". This option was more commonly seen on La Scala's. CODE ** WOOD FINISH REMARKS AL Ash Lacquer Uncommon AO Ash Oiled Uncommon BB Birch Black Lacquer Common BR Birch Raw Common BL Birch Lacquer Common BW Birch White Lacquer Rare Spec Order CL Cherry Lacquer Uncommon ** CO Cherry Oiled Uncommon D-BR Birch Raw Designer (No Grill) D-BB Birch Black Lacquer Designer (No Grill) FL Fir Lacquer Rare FO Fir Oiled Rare FB Fir Black Lacquer Late Models Only F Fir Firzite Rare - Marine Grade HL Hickory Lacquer (reported-unconfirmed) MEL Macassar Ebony Lacquer Rare Spec Order MEO Macassar Ebony Oiled (unconfirmed) MHL Mahogany Lacquer Rare Spec Order MHO Mahogany Oiled Rare Spec Order MHR Mahogany Raw Rare Spec Order ML Maple Lacquer Rare"Hardrock Maple" MO Maple Oiled Rare"Hardrock Maple" MO* Medium Oak Oiled Late 90's Models OL Oak Lacquer Common (Red Oak) OL Oak Oiled Common (Red Oak) PNL* Persian Nut Lacquer Rare Spec Order RRL* Rambling Rose Lacquer Rare Spec Order PL Prima Vera Lacquer Rare Spec Order PR Prima Vera Raw Rare -Early RL Rosewood Lacquer Brazilian species RO Rosewood Oiled Brazilian species TL Teak Lacquer Uncommon TO Teak Oiled Uncommon WL Walnut Lacquer Common WO Walnut Oiled Common WS Birch (stained) Stain Walnut on Birch ZL Zebrawood Lacquer Rare Spec Order ZO Zebrawood Oiled Rare Spec Order * "Persian Nut" and "Rambling Rose" are not an actual wood species; they were made from linear cut birch or walnut wood which was dyed with specific hues/colors, re-glued into alternating color layers and then rotary cut into the respective veneer types to achieve the effect. ** Lacquer finish on early production Cherry was uncommon. V. HERITAGE SERIAL NUMBERS: 1. Based upon additional information related to the use of letters starting in 1955, the 1962-1983 coding has been modified to reflect that information. 2. The serial number was written on the paper serial tags and die stamped on the back edge of the top panel (inside top portion in LS). This practice was not used on later "MDF" cabinets for Heresy's, etc. Serial numbers can often be found written in pencil on the inside of some of the Heritage series, most notably Klipschorn's and Belle's. 3. While the 1946-1961 manufacturing dates can only be found in the Engineering Library in Indianapolis, accurate specific dates for the day of manufacture may also be found by close examination of the interior of the speaker cabinets. As an example there were often small inspection tags stapled inside the cabinets and penciled notations with dates inside the cabinets. An example of the production inspection stickers was the use of "PRIDE" stickers inside some models. These were used in the early through mid-1980's. 4. Additional letters stamped in the edges of Heritage series made from birch plywood, and on the poplar and ash "lumber core" as the substrate, were "USA" and/or the cabinet builder's and final sander's initial(s). For reasons of protecting their right to privacy, I have not identified the names of those superb craftsmen (and women). DATES DESCRIPTION EXAMPLE 1946-1947 ### 001-020 (ending at #20) 1946 & 1947 Klipschorn serials #002 - #013 were made by Baldwin. Serial numbers #14-20 were made for purchasers in a local cabinet shop before the move to the first factory (now museum). There are no Klipschorn's with a serial number between 21 and 120. DATES DESCRIPTION EXAMPLE 1948-1961 #### (starting #0121) From 1948 though 1961, Klipschorn's had the serial number stamped into the tailboard, woofer access door, or inside the woofer chamber. The number of Klipschorns produced and shipped in 1948 and 1949 is not clearly recorded in the early logbook. In 1948, 24 serial numbers were recorded (#121 - #144). Fourteen were clearly shipped in 1948, 1 was shipped in 1949, and 1 in 1950. Eight do not have a clear record of being shipped. In 1949, 32 serial numbers were recorded (#145 - #176). Of these, 27 were shipped in 1949 (plus the 1948 unit), and 5 have no clear record of shipping. DATES DESCRIPTION EXAMPLE 1955-1983 ##letter#### 20Y1234 Letters that look like numbers (e.g. I, O, Q, V) were not used. "S" is frequently misread as a "5" and Y has been confused with an X on occasion. July 29, 1955 was the last day for the four digit serials (i.e. 1811). After that the "number- letter-serial" system went into effect (2 August 1955). The first "number-letter-serial" speaker was produced on the 2nd of August 1955; that serial number was 1A812. In the 1955-1983 serial method the first, or prefix "digit(s)" before the year letter represents the sequence of production for each 1000 units. The suffix digits after the letter code will always be three digits - 001 through 999. For example 1C999 would be the 999th unit built, and 2C999 would be the 1999th built in 1965 C = 1965). These digits before & after the year code apply only to that type of speaker. The year code letter only identifies the year in which that number occurred. As an example, if you have a pair of Klipschorn's and one of the serial numbers is 15T252, then by 1979 there had been 14,151 Klipschorn's made (Klipschorn's made in 1946-1947 were serial numbered from 1 to 20, and in 1948 started with #121, skipping #21 through #120). For a pair of 1979 La Scala's, with serial number 22T403, it means there were 21,403 La Scala's made to that point. Another example: A pair of Belles from 1979 has the serial number 3T242 and 243. This means that in 1979 these Klipsch Belles, the 2,242nd & 2,243rd, were made. YEAR OF MANUFACTURE (1955 THROUGH 1983 ONLY) A = 1955-63* F = 1968 L = 1973 S = 1978 B = 1963-64* G = 1969 M = 1974 T = 1979 C = 1965 H = 1970 N = 1975 U = 1980 D = 1966 J = 1971 P = 1976 W = 1981 E = 1967 K = 1972 R = 1977 X = 1982 Y = 1983 * Cornwall's & La Scala's used "A" 1963 and "B" for 1964; the first Cornwall to use a letter code was 3A09, shipped in August of 1963. DATES DESCRIPTION EXAMPLE 1984-1989 YYWW#### 89261234 YY = year (e.g. 89 = 1989) WW = week of the year (e.g. 26= last week in June) The WW can also be a single digit for weeks 01 through 09; e.g. 877#### (mid February 1987) In the early-mid 80's (generally starting in 1984), Klipschorn's had two serial numbers assigned to each speaker; one for the bass bin and one for the top section. The bass bin had an "L/F" at the end of the "type code" (see further below) and the top section had an "H/F" at the end of the type code. This coding was is used on Chorus, Forte & Academy DATES DESCRIPTION EXAMPLE 1990-1997 DOYY2Y1#### 135791234 DOY = day of the year (e.g. 135 = 14 May) Y2Y1 = 2nd digit of year, 1st digit of year (e.g. 79 =1997) This coding was is used on Chorus, Forte & Academy DATES DESCRIPTION EXAMPLE 1998- 2016 YY WW #### 00281234 YY = year (e.g. 00 = 2000) WW = week of the year (e.g. 28 = 2nd week in June) This coding was is used on Chorus, Forte & Academy SEE PART 2 Quote Link to comment Share on other sites More sharing options...
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