Ortofon AS-309R 12INCH reference tonearm
Overview
The Ortofon AS-309R 12INCH reference tonearm is the result of several years of expertise in tonearm design. This model combines mechanical precision and advanced engineering. With its 12-inch length and carefully selected components, the AS-309R offers faithful sound reproduction for vinyl enthusiasts.
Precision Engineering in the Service of Sound
The AS-309R stands out for its cutting-edge engineering, with over 130 redesigned components to deliver unprecedented mechanical precision. Ortofon’s engineers have meticulously selected each material to minimize unwanted vibrations and distortions. The result is a tonearm capable of following grooves with remarkable fidelity, delivering clear, precise, and detailed sound.
The 12-inch length of the AS-309R is no coincidence. It reduces tracking error compared to a 9-inch arm, providing more accurate playback, particularly beneficial on the inner grooves of a record. Additionally, the arm is designed according to the Baerwald alignment, optimizing playback geometry to minimize distortion across the entire record.
Versatility and Ease of Use
One of the major strengths of the AS-309R is its great versatility. Designed to fit a wide range of turntables, it can be adjusted in height to accommodate different platter thicknesses. The arm is equipped with a universal brass connector, making it easy to pair with various cartridges mounted on different headshells.
Ortofon has also considered collectors with multiple cartridges. The AS-309R comes with two counterweight options, allowing it to accommodate cartridges ranging from the Concorde series to the SPU series by Ortofon, as well as most cartridges on the market. This flexibility enables audiophiles to easily change configurations according to their listening preferences or the type of record being played.
Intuitive Adjustments for Optimal Performance
The AS-309R has been designed to simplify adjustments as much as possible, often a source of frustration for beginners. The arm is statically balanced, greatly facilitating the adjustment of tracking force. The anti-skating system is also easy to set, allowing for effortless optimization of groove tracking.
These features, combined with manufacturing precision, enable quick optimal setup, ensuring stable and precise playback, even on the most demanding records.
High-End Wiring for Uncompromised Transmission
To fully exploit the potential of the AS-309R, Ortofon has equipped it with the 6NX-TSW-1010 tonearm cable, renowned for its excellent performance. This high-end cable ensures optimal signal transmission, preserving the integrity of the sound captured by the cartridge.
The 5-pin DIN connector on the arm also allows the use of other high-quality cables, enabling the most demanding audiophiles to customize their setup according to their preferences.
Technical Specifications
Dimensions
- Mounting distance: 331 mm
- Effective length: 323.5 mm
- Overhang: 12.5 mm
- Height above mounting surface: 59 to 79 mm
- Distance between mounting surface and top of the platter: 20 to 48 mm
Mechanical Specifications
- Offset angle: 16.75°
- Arm shaft diameter: 18 mm
- Radial counterweight travel:
- Standard version: 85 mm
- Heavy version: 93 mm
Weight and Masses
- Cartridge mass:
- With shell: 18 to 26 g
- With shell: 26 to 38 g
- Tonearm mass: 680 g (standard), 730 g (heavy)
- Effective tonearm mass: 11 g
Frequently Asked Questions
What is the difference between the AS-309R and the AS-212R?
The AS-309R is a 12-inch arm, while the AS-212R is its 9-inch equivalent. The longer arm of the AS-309R offers reduced tracking error, particularly beneficial on the inner grooves of a record, at the cost of slightly greater space requirements.
Is this arm compatible with my turntable?
The AS-309R is designed to fit a wide range of turntables. Its adjustable height and standard 18 mm shaft diameter make it compatible with most high-end models. However, it is recommended to check your turntable’s specifications, particularly the pivot-to-spindle distance and the space available for the 12-inch arm.
What types of cartridges can I use with this arm?
The AS-309R is extremely versatile. Thanks to its two counterweight options, it can accommodate cartridges weighing between 18 and 38 grams, covering almost all models on the market, from Ortofon Concorde to SPU, as well as most high-end MC and MM cartridges.
How do I correctly adjust the tracking force and anti-skating?
Tracking force is adjusted via the graduated counterweight. For anti-skating, Ortofon provides a precise and easy-to-use adjustment system. It is recommended to follow the instructions in the user manual and use a precision scale to fine-tune the settings.
What is the estimated lifespan of this tonearm?
With proper maintenance, the AS-309R is designed to last several decades. The quality of materials and manufacturing precision ensure exceptional longevity, provided the arm is handled with care and protected from dust.
Can I use this arm for playing 78 RPM records?
Although primarily designed for 33 and 45 RPM records, the AS-309R can theoretically be used to play 78 RPM records. However, a specific cartridge for this format will be required, and careful adjustments will need to be made. It is advisable to consult a specialist for optimal setup.
- Eco-contribution included in the sale price.
- Manufacturer reference: 9033-AS-309R
- GTIN / EAN: 4571106664534