Maxell UD-35-180
A 1,800-foot reel of Maxell's low-noise ferric that dealers kept discounting and studios kept buying.
Overview
The UD-35-180 is a 7-inch reel of Maxell's UD-series open-reel tape. It's a low-noise, high-output ferric formulation on a polyester base, and the manufacturer documentation confirms that much. The surviving dealer listings and period price sheets show it was never a flagship. It was the workhorse reel that audio shops in the late 1970s used to bring in customers, advertised at the top of their recording-tape price blocks next to the cassettes.
Hard specifications are scarce in the archive. Maxell sold the UD open-reel line mostly on the strength of the brand and the dealer network, not on published measurement data. No wow-and-flutter, bias, or MOL figures appear in the surviving review material.
Pricing is what the archive does preserve, and in unusual density. Dealer advertisements from the late 1970s show the UD-35-180 selling at wildly different prices depending on the shop and the month. One Northern California dealer listed it at $19.00; another at $17.00; another at $15.00; another at $14.00. One ad marks it "Lmt Sup" - limited supply - at $16.00, while another calls the UDXL variant the "Special." A 1978 advertisement with an expiration date of December 31 shows the UD35-180 at $14.00, the lowest price in the surviving set. That spread of roughly $14 to $19 for the same reel points to a commodity product sold on price and availability, with dealers fighting for the business.
The UD-35-180 sat in the middle of Maxell's open-reel lineup. The same dealer ads list the UD-35-90 - the 900-foot, 7-inch version of the same tape - at prices consistently below the 180, and list the UDXL-35-180 at a premium above it. The ads never explain this ranking. They assume the buyer already knows it.
Collectors chasing open-reel tape today tend to look for sealed, boxed examples, and the UD-35-180 turns up in that condition less often than the cassette equivalents. The reels were used, and used hard. This was a tape bought by the case by people dubbing LPs and building reel libraries. A sealed UD-35-180 is a time capsule; a used one is a gamble on whether the previous owner stored it well. The archive has no confirmed production years for this model, so dating a specific reel depends on the box design and the dealer stamp, not on any documented run.
One caution for buyers: the surviving price data comes from dealer advertisements, not from Maxell's own list pricing, and the ads are inconsistent about whether the quoted figure is per reel or per lot. Treat any single price as approximate. The pattern is reliable - a mid-tier 7-inch ferric reel selling somewhere in the mid-teens to high-teens of dollars in the late 1970s. The exact number on any given day was whatever the shop decided to charge.
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