SL3 - Speaker Martin Logan - Free user manual and instructions
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| Product Type | Hybrid Electrostatic Loudspeaker |
| Model | SL3 |
| Brand | Martin Logan |
| Driver Configuration | Electrostatic panel + 10" powered woofer |
| Frequency Response | 35 Hz - 20 kHz |
| Power Handling | 200 watts RMS |
| Impedance | 4 ohms |
| Sensitivity | 89 dB |
| Dimensions (H x W x D) | 62" x 11" x 16" |
| Weight | 75 lbs each |
| Power Requirement | AC 120V (for powered woofer) |
| Input Type | Bi-wire capable binding posts |
| Recommended Amplifier | 50 - 200 watts per channel |
| Electrostatic Panel Type | CLS (Curvilinear Line Source) |
| Cleaning Instructions | Dust with soft, dry cloth; avoid moisture |
| Safety Precautions | Place on stable surface; ensure ventilation |
| Spare Parts Availability | Contact Martin Logan service for replacement panels |
| Repairability | Professional service recommended for high voltage |
Frequently Asked Questions - SL3 Martin Logan
How do I clean the electrostatic panel?
Use a soft, dry cloth or a duster. Do not use liquids or sprays as they can damage the panel. Gently wipe the panel from top to bottom.
Why is there no sound from my SL3 speakers?
Check that the powered woofer is plugged into AC power and the power switch is on. Verify amplifier connections and that the speakers are set to the correct impedance. Also ensure the electrostatic panel is not damaged.
Can I use the SL3 with a subwoofer?
Yes, the SL3 has a powered woofer, but you can add an external subwoofer. Set the SL3's crossover to bypass or full-range if possible, or use the subwoofer's high-level inputs.
What amplifier power is recommended?
An amplifier delivering 50 to 200 watts per channel into 4 ohms is ideal. Higher quality amplifiers with good current capability are preferred.
Can I bi-wire the SL3 speakers?
Yes, the SL3 has separate binding posts for the electrostatic panel and the woofer. Remove the jumpers to bi-wire or bi-amp. Consult your amplifier manual for proper bi-wiring setup.
What is the ideal placement for the SL3?
Place the speakers at least 2 feet from the back wall and slightly angled toward the listening position. The electrostatic panel should be at ear level when seated.
How do I repair a damaged electrostatic panel?
Repair of electrostatic panels is complex and dangerous due to high voltage. Contact Martin Logan service or an authorized technician for replacement or professional repair.
Are replacement parts available for the SL3?
Martin Logan offers replacement panels and woofer components. Contact their customer service with your serial number to order parts. Availability may vary.
How do I connect the SL3 to my amplifier?
Use high-quality speaker wire. Connect the amplifier's positive terminal to the speaker's positive binding post and negative to negative. For single-wired connection, leave the jumpers in place.
Why do I hear static or crackling from the electrostatic panel?
This may be caused by dust or moisture on the panel. Try cleaning gently with a dry cloth. If persistent, it could indicate a high-voltage power supply issue; consult a technician.
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USER MANUAL SL3 Martin Logan
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Product information
Brand : Martin Logan
Model : SL3
Category : Speaker