Thorens BL 104
A vintage tonearm made by Thorens, commonly fitted to several of their mid-20th century turntable models.
Overview
The Thorens BL 104 is a tonearm made by Thorens and used on several turntables, including the TD 124, TD 134, and TD 184. It is also documented on the TD 121. Sources call it the "stock" arm for the TD 124, and it appears to have been a standard part across the Thorens lineup while it was in production. It has a 3-pin headshell connection and a tonearm lift linkage with two fixing screws for adjustment.
Design
The BL 104 uses a 3-pin headshell. Its tonearm lift linkage is adjustable with two fixing screws. Early Thorens tonearms, the BL 104 included, were noted for a design resembling a "half-..." form factor, different from later models.
Context
The BL 104 was standard equipment on the Thorens TD 124, TD 134, and TD 184 turntables, and it has been observed on the TD 121.
Market
Current market listings describe the BL 104 as rare, and it often sells untested and as-is. Replacement parts such as the tonearm lift linkage and headshells are sold separately and are also noted as rare. A forum post titled "Fixing a Thorens BL 104 tonearm [Thorens TD 134]" indicates these arms may need maintenance or repair. A manual is available at vinylengine.com.
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Related Models
- Thorens TD-124 (1957–1967)
- Thorens TD-150 (1965)
- Thorens TD-225 (1975)
- Thorens TD-126 Mk III
- Thorens TD 550
- Garrard SP (1975)
- Luxman PD-310 (1981)
- Luxman PD-555 (1983)
- Harman Kardon kardon-turntables (1975)
- Onkyo CP-1020 (1979)