MAG MM M27BS
MAG Turntable Cartridge and Needle User Manual
Model: MM M27BS (Compatible with Technics SL-220, SL-221, SL-23, SL-235)
1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your MAG MM M27BS Turntable Cartridge and Needle. This high-quality moving magnetic cartridge features a diamond stylus, designed to deliver excellent sound quality and strong tracking ability for compatible Technics turntable models including SL-220, SL-221, SL-23, and SL-235.
Please read this manual thoroughly before installation to ensure proper setup and optimal performance.
2. Setup and Installation
The MAG MM M27BS cartridge is designed for simple plug-in installation. Follow these steps carefully to install the cartridge onto your turntable's tonearm.
2.1 Unpacking and Inspection
Carefully remove the cartridge and needle assembly from its packaging. Inspect for any visible damage. Ensure all components are present.

Figure 2.1: The complete MAG MM M27BS turntable cartridge and needle assembly, ready for installation.
2.2 Connecting Wires
Before mounting the cartridge, connect the four color-coded wires from your turntable's headshell to the corresponding pins on the back of the cartridge. Ensure a firm, secure connection for each wire.
- Red (R+): Right Channel Positive
- Green (R-): Right Channel Ground
- White (L+): Left Channel Positive
- Blue (L-): Left Channel Ground

Figure 2.2: Rear view of the cartridge illustrating the four connection pins for the headshell wires.

Figure 2.3: Top-down view of the cartridge with wires connected, demonstrating the proper routing.
2.3 Mounting the Cartridge
Once the wires are connected, align the cartridge with the mounting holes on your turntable's headshell. Secure the cartridge using the provided screws, ensuring it is firmly attached but do not overtighten.

Figure 2.4: Top view of the cartridge showing the mounting screws and alignment on a headshell.

Figure 2.5: Angled top view of the cartridge, highlighting the stylus and its position relative to the headshell.
2.4 Setting Tracking Force
For optimal performance and to prevent damage to your records and stylus, it is crucial to set the correct tracking force. The recommended tracking force for the MAG MM M27BS cartridge is 3.0 grams, with an acceptable range of 2.5 to 3.5 grams. Refer to your turntable's manual for instructions on how to adjust the tracking force on your tonearm.

Figure 2.6: Side profile of the cartridge, showing the stylus tip. Proper tracking force ensures optimal contact.

Figure 2.7: A slightly different side angle of the cartridge, emphasizing its compact design.

Figure 2.8: Front angled view of the cartridge, highlighting the stylus guard and overall structure.
3. Operating Instructions
Once installed and properly adjusted, your MAG MM M27BS cartridge is ready for use. Always handle your turntable and records with care to ensure longevity of both your equipment and media.
- Ensure your turntable is on a stable, level surface.
- Clean your records before each play to minimize dust accumulation on the stylus.
- Gently lower the tonearm onto the record using the cueing lever. Avoid dropping the tonearm manually.
- When finished, lift the tonearm using the cueing lever and return it to its rest.
4. Maintenance
Regular maintenance will prolong the life of your cartridge and stylus, and ensure consistent sound quality.
4.1 Stylus Cleaning
Dust and debris can accumulate on the stylus tip, affecting sound quality and potentially damaging records. Clean the stylus regularly using a soft brush designed for stylus cleaning, brushing gently from back to front (away from the cantilever).
4.2 Cartridge Care
Avoid touching the stylus or cantilever with your fingers. When not in use, ensure the stylus guard is in place to protect the needle from accidental damage.
5. Troubleshooting
If you experience issues with your MAG MM M27BS cartridge, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound or Low Volume | Incorrect wiring; loose connections; amplifier input issue. | Check all wire connections between cartridge and headshell, and turntable to amplifier. Ensure correct input is selected on amplifier. |
| Distorted Sound | Incorrect tracking force; dirty stylus; worn stylus; damaged record. | Verify tracking force is set to 3.0g. Clean the stylus. Inspect stylus for wear or damage. Try a different record. |
| Skipping or Jumping | Incorrect tracking force; turntable not level; dirty stylus; damaged record. | Adjust tracking force. Ensure turntable is perfectly level. Clean the stylus. Inspect record for scratches or debris. |
6. Specifications
Key technical specifications for the MAG MM M27BS Turntable Cartridge:
- Type: Moving magnetic cartridge with diamond stylus needle
- Model: Standard MM
- Output Voltage (at 1kHz, 5 cm/sec): 5.5 mV ± 3dB
- Channel Balance (at 1kHz): Below 1 dB
- Channel Separation (at 1kHz): More than 15 dB
- Frequency Response: 20 ~ 20k Hz
- Tracking Force: 3.0g (recommended range: 2.5 ~ 3.5g)
- Stylus Tip: Stereo spherical diamond tip
- Compatible Turntables: Technics SL-220, SL-221, SL-23, SL-235
- ASIN: B08G4NZLRN
- Date First Available: August 18, 2020
7. Warranty and Support
Specific warranty details and direct support contact information are not available in the provided product data. For warranty claims, technical support, or further inquiries, please refer to the original product packaging or visit the official MAG brand website.
You may also check the seller's return policy on the platform where the product was purchased. For this product, the seller is My Needle Store Intl.
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