ERS 840 - Pregnant INFINITY - Free user manual and instructions
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| Product Type | Passive Bookshelf Speaker |
| Brand | Infinity |
| Model | ERS 840 |
| Dimensions (W x H x D) | 30 cm x 20 cm x 25 cm |
| Weight | 5 kg each |
| Power Handling (RMS) | 100 W |
| Frequency Response | 55 Hz - 20 kHz |
| Impedance | 8 ohms |
| Sensitivity | 88 dB (2.83V/1m) |
| Driver Configuration | 2-Way: 1.0" Tweeter, 6.5" Woofer |
| Enclosure Type | Bass Reflex (Rear Ported) |
| Recommended Amplifier Power | 20 - 150 W per channel |
| Connectivity | 5-Way Binding Posts |
| Color | Black Vinyl Finish |
| Material | MDF Cabinet |
| Grille | Removable Black Cloth Grille |
| Magnetic Shielding | Yes |
| Cleaning | Use a soft, dry cloth. Do not use solvents or abrasive cleaners. |
| Safety | Place on a stable surface away from moisture and heat sources. Ensure proper ventilation. |
| Spare Parts & Repairability | Contact Infinity authorized service centers for drivers, crossovers, and other components. |
Frequently Asked Questions - ERS 840 INFINITY
How do I connect the Infinity ERS 840 speakers to my amplifier?
Use high-quality speaker wire. Strip about 1/2 inch of insulation, twist the strands, and insert into the binding posts. Tighten the posts securely. Ensure correct polarity: red post to red terminal, black to black.
What is the recommended placement for these speakers?
Place speakers on a sturdy shelf or stand at ear level. Keep them at least 6 inches from walls to allow the rear port to function properly. Maintain a symmetrical listening position for optimal stereo imaging.
Can I use the ERS 840 with a surround sound system?
Yes, they work well as front or rear speakers in a home theater setup. Match the impedance and power requirements with your receiver. Use the same series for consistent sound.
How do I clean the speaker grille?
Remove the grille gently. Use a soft brush attachment on a vacuum cleaner to remove dust. For stains, lightly dab with a damp cloth and mild soap, then air dry completely before reattaching.
What should I do if there is no sound from one speaker?
Check the speaker wire connections at both the speaker and amplifier. Ensure the amplifier is set to stereo mode. Try swapping speakers to isolate the issue. If the problem persists, the driver or crossover may be faulty.
How can I reduce bass boom from my ERS 840?
Move the speakers farther from walls or corners. If your amplifier has a bass management system, set the crossover frequency higher (e.g., 80 Hz) and use a subwoofer. Alternatively, seal the rear port with foam plugs if provided.
Is the Infinity ERS 840 compatible with 4-ohm amplifiers?
The speakers are 8 ohms nominal. They are compatible with amplifiers rated for 8-ohm loads. Using them with a 4-ohm amplifier will not damage the speakers but may reduce maximum output.
What is the warranty period for these speakers?
Infinity typically offers a 5-year limited warranty for passive speakers. Register your product online or keep the purchase receipt. Contact Infinity customer service for specific terms.
Can I bi-wire or bi-amp the ERS 840?
The binding posts have separate terminals for high and low frequencies. Remove the metal jumpers between them. Use two sets of speaker wire (bi-wire) or two amplifier channels (bi-amp) after consulting your amplifier's manual.
Are there any special considerations for using these speakers outdoors?
These speakers are designed for indoor use only. Exposure to moisture, direct sunlight, or extreme temperatures can damage the cabinet and drivers. Use weatherproof speakers for outdoor setups.
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