SP-55SM - Pregnant NEC - Free user manual and instructions
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| Product Type | Bookshelf Speaker |
| Brand | NEC |
| Model | SP-55SM |
| Speaker Configuration | 2-way |
| Woofer Size | 5.25 inches (133 mm) |
| Tweeter Size | 1 inch (25 mm) soft dome |
| Frequency Response | 50Hz - 20kHz |
| Impedance | 8 ohms |
| Sensitivity | 88 dB (2.83V/1m) |
| Power Handling (RMS) | 50 watts |
| Peak Power Handling | 100 watts |
| Recommended Amplifier Power | 20-100 watts per channel |
| Crossover Frequency | 3 kHz |
| Enclosure Type | Bass reflex (front-firing port) |
| Cabinet Material | MDF (Medium Density Fiberboard) |
| Dimensions (H x W x D) | 305 x 195 x 260 mm |
| Weight | 4.5 kg each |
| Finish | Black vinyl |
| Connectivity | Binding posts (banana plug compatible) |
| Placement | Bookshelf or speaker stand |
| Included Accessories | None (speaker only) |
| Safety Certification | CE, RoHS |
| Warranty | 1 year (varies by region) |
Frequently Asked Questions - SP-55SM NEC
How do I connect the NEC SP-55SM speakers to my amplifier?
Use the binding posts on the back of the speaker. Strip the speaker wire ends, insert into the posts, and tighten. Ensure correct polarity (+ to +, - to -). Recommended wire gauge: 16-14 AWG.
What is the recommended amplifier power for these speakers?
The speakers handle 20-100 watts RMS per channel. Use a quality amplifier within this range to avoid distortion or damage.
Can I place the SP-55SM on a shelf or do I need stands?
They can be placed on a sturdy shelf or on dedicated speaker stands. Ensure the tweeters are at ear level for best sound staging. Avoid placing them directly on the floor or in corners to prevent bass boom.
How should I clean the speakers?
Use a soft, dry cloth to dust the cabinet. For grilles, gently vacuum with a soft brush attachment. Never use liquid cleaners or abrasives as they may damage the finish or drivers.
What is the impedance of the NEC SP-55SM?
The nominal impedance is 8 ohms. Ensure your amplifier is rated for 8-ohm loads.
Can I bi-wire or bi-amp these speakers?
The SP-55SM has only one pair of binding posts, so bi-wiring or bi-amping is not possible without modification. Use a single run of speaker wire per channel.
Do the speakers come with a warranty?
Yes, typically a 1-year manufacturer warranty. Check with your retailer for specific terms. Keep your proof of purchase.
What is the frequency response of these speakers?
The frequency response is 50Hz to 20kHz, offering a balanced sound suitable for music and movies.
Are the speakers magnetically shielded?
No, they are not magnetically shielded. Keep them at least 30 cm away from CRT monitors or other magnetic-sensitive devices to avoid interference.
What type of speaker wire should I use?
Use 16-gauge or thicker copper speaker wire for runs up to 15 meters. For longer runs, 14-gauge or 12-gauge is recommended. Ensure the wire is properly stripped and connected.
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