Thorens SPU 124
Overview
The Thorens SPU 124 is the result of a collaboration between two giants of high-end audio: Thorens and Ortofon. This moving coil (MC) cartridge was specifically designed to complement the Thorens TD 124 DD turntable, but its exceptional sound quality makes it a top choice for any discerning vinyl enthusiast. Equipped with a revised generator offering an output voltage of 0.5 mV and a nude elliptical diamond with reduced mass, the SPU 124 promises precise, balanced, and dynamic sound reproduction.
A Revisited Audiophile Legacy
The SPU 124 follows in the footsteps of Ortofon’s famous SPU cartridges while introducing significant improvements. The design remains true to the classic SPU aesthetic, with a body made of resin and compressed wood reminiscent of historical models. However, Thorens and Ortofon have modernized this icon to meet the current demands of music lovers.
The generator, the true heart of the cartridge, has been completely redesigned. This revision allows for a higher output voltage (0.5 mV) than traditional SPUs, making it easier to use with a wider range of phono preamplifiers. This feature also reduces the need for excessive signal amplification, thereby minimizing background noise and potential interference.
A Construction Focused on Performance
The SPU 124 stands out for its attention to detail and meticulous construction. The nude elliptical diamond benefits from high-precision polishing and reduced mass, significantly improving its groove-tracking capabilities. This optimization enables the cartridge to faithfully reproduce the subtlest nuances etched into the vinyl while reducing record wear over the long term.
The cartridge body, weighing 30 grams, ensures optimal stability during playback. This mass, although higher than that of many modern cartridges, pairs perfectly with tonearms designed for SPUs, particularly the one on the TD 124 DD. It helps absorb unwanted vibrations and maintain constant contact between the diamond and the groove.
A Refined Sound Signature
The SPU 124 is characterized by sound reproduction that is both neutral and musical. Its extended frequency response (20 Hz - 20 kHz, ±2 dB) ensures faithful reproduction across the entire audible spectrum. The channel separation, exceeding 23 dB at 1 kHz, delivers precise stereo imaging and a well-defined soundstage.
One of the strengths of this cartridge lies in its ability to extract maximum detail from the groove without veering into excessive analytical precision. Listeners will appreciate the richness of timbres, the accuracy of attacks, and the smoothness of decays. Vocals benefit from a natural presence, while instruments retain their texture and unique character.
Dynamics are another strong point of the SPU 124. Thanks to its lateral compliance of 8 µm/mN and high tracking ability (>70 µm at 315 Hz), it effortlessly conveys amplitude variations, from the most delicate pianissimos to the most intense fortissimos. This agility gives recordings a striking vitality and realism.
Installation and Optimization
Installing the SPU 124 requires some expertise but remains accessible to knowledgeable enthusiasts. Its SME-type connection facilitates mounting on many high-end tonearms. It is crucial to adhere to the recommended tracking force of 3 grams (with an acceptable range of 2.5 to 3.5 g) to achieve the best performance.
The 20° tracking angle must be carefully adjusted to ensure optimal alignment of the diamond in the groove. Precise anti-skating adjustment is also necessary to compensate for centripetal force and ensure balanced tracking of both channels.
It is important to note that the SPU 124, like all high-end MC cartridges, requires a break-in period to fully express its potential. The first hours of listening will allow the suspensions to loosen and the generator to stabilize, gradually refining the cartridge’s sound qualities.
Technical Specifications
Physical Characteristics
- Moving coil cartridge
- Elliptical diamond
- SME connector
- Resin and compressed wood structure
- Cartridge weight: 30 g
Usage Parameters
- Recommended tracking force: 3 g (30 mN)
- Tracking force: 2.5 - 3.5 g (25 - 35 mN) (nominal 3 g)
- Tracking angle: 20°
Audio Performance
- Frequency response: 20 - 20,000 Hz (+ 2 dB)
- Channel separation at 1 kHz > 23 dB
- Lateral compliance at 315 Hz at recommended tracking force: 70 µm
- Dynamic lateral compliance: 8 µm / mN
Electrical Characteristics
- Internal impedance: 2 Ω
- Recommended load: 10 - 50 Ω
Frequently Asked Questions
Is the SPU 124 compatible with turntables other than the Thorens TD 124 DD?
Although specifically designed for the TD 124 DD, the SPU 124 can be used with other high-end turntables, provided the tonearm is compatible with its weight (30 g) and electrical characteristics. It is important to check compatibility with your equipment before purchasing.
Does the SPU 124 require a specific phono preamp?
Yes, the SPU 124 requires a phono preamplifier suitable for low-impedance MC cartridges. It must be capable of handling a load between 10 and 50 Ω and provide sufficient gain to amplify the 0.5 mV signal. A quality preamp is essential to fully exploit the potential of this cartridge.
What is the main difference between the SPU 124 and a classic Ortofon SPU?
The main difference lies in the revised generator of the SPU 124, which offers a higher output voltage (0.5 mV) than classic SPUs. This feature makes it easier to use with a wider range of preamplifiers and reduces the need for excessive amplification, thereby improving the signal-to-noise ratio.
- Eco-contribution included in the sale price.
- Manufacturer reference: 9201-SPU-124
- GTIN / EAN: 5705796240450
