Introduction
This manual provides instructions for the installation, operation, and maintenance of your MAG M27BS Moving Magnet Cartridge with Diamond Stylus. This cartridge is designed for compatibility with Goodmans CRN-2500 1, GSP-400, and GSP-400S turntable models, offering high-quality audio reproduction.
Safety Information
Please read these safety instructions carefully before installation. Improper handling can damage the cartridge or your turntable.
- Always handle the stylus with care to prevent damage.
- Ensure the turntable is powered off and unplugged before installation.
- Keep small parts, such as mounting screws, out of reach of children.
Setup and Installation
Installing the MAG M27BS cartridge requires careful attention. If you are unsure, please seek professional assistance.
- Preparation: Ensure your turntable is turned off and unplugged. Remove the old cartridge from the tonearm headshell, if applicable.
- Wiring: Connect the four color-coded wires from the tonearm to the corresponding pins on the back of the M27BS cartridge.
- Red: Right Channel Positive (R+)
- Green: Right Channel Ground (RG-)
- White: Left Channel Positive (L+)
- Blue: Left Channel Ground (LG-)
- Mounting: Carefully align the cartridge with the headshell. Use the provided mounting screws to secure the cartridge to the headshell. Do not overtighten.
- Stylus Guard: Ensure the stylus guard is in place during mounting to protect the diamond tip.
Image: The MAG M27BS cartridge shown with its two mounting screws, ready for installation onto a turntable headshell. The cartridge features a blue body and a clear stylus guard.
Image: A rear view of the MAG M27BS cartridge, clearly displaying the four color-coded pin connections for wiring to the tonearm. The pins are typically used for left positive, left ground, right positive, and right ground audio signals.
Operating Instructions
Once installed, the MAG M27BS cartridge operates like any standard moving magnet cartridge.
- Tracking Force Adjustment: The recommended tracking force for the M27BS is 3.0g, with a range of 2.5g to 3.5g. Adjust your turntable's tonearm counterweight to achieve this setting.
- Anti-Skate Adjustment: Set your turntable's anti-skate mechanism according to the recommended tracking force.
- Playing Records: Carefully lower the tonearm onto the record using the cueing lever.
Image: The MAG M27BS cartridge with its clear protective stylus guard in place, positioned on a clear display stand. This view highlights the cartridge's design and the stylus tip.
Maintenance
Proper maintenance ensures optimal performance and extends the life of your cartridge.
- Stylus Cleaning: Gently clean the stylus tip regularly using a soft brush designed for stylus cleaning, brushing from back to front.
- Dust Protection: Always replace the stylus guard when the turntable is not in use. Keep your records clean to minimize dust transfer to the stylus.
- Stylus Replacement: The diamond stylus will wear over time. Replace it when sound quality degrades or after approximately 500-1000 hours of play, depending on record condition and cleaning habits.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound or weak sound from one channel | Incorrect wiring; damaged wire; dirty pin connection | Check all wiring connections to the cartridge. Ensure pins are clean and secure. |
| Distorted sound or skipping | Incorrect tracking force; worn or dirty stylus; damaged record | Adjust tracking force to 3.0g. Clean the stylus. Inspect the record for damage. Consider stylus replacement. |
| Humming noise | Grounding issue; interference | Ensure turntable is properly grounded. Check for nearby electronic devices causing interference. |
Specifications
| Feature | Detail |
|---|---|
| Cartridge Type | Moving Magnet (MM) |
| Stylus Tip | Stereo Spherical Diamond Tip |
| 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 ~ 20,000 Hz |
| Tracking Force | 3.0g (Recommended range: 2.5 ~ 3.5g) |
| Compatibility | Goodmans CRN-2500 1, GSP-400, GSP-400S |
Warranty Information
This MAG M27BS cartridge comes with a 6-month warranty against manufacturing defects. Additionally, a 14-day "any reason" return policy is offered from the date of purchase. Please retain your proof of purchase for warranty claims.
The warranty does not cover damage caused by improper installation, misuse, accident, or normal wear and tear of the stylus.
Customer Support
For further assistance, technical support, or warranty claims, please contact your retailer or the manufacturer. When contacting support, please have your product model (M27BS) and purchase details available.
Manufacturer: MAG