Tesi 661 - Speaker Indiana Line - Free user manual and instructions
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| Product Type | Floorstanding Speaker |
| Brand | Indiana Line |
| Model | Tesi 661 |
| Category | Speaker |
| Design | 2.5-way, bass reflex |
| Woofer Size | 2 x 165 mm (6.5 in) |
| Tweeter Size | 25 mm (1 in) soft dome |
| Frequency Response | 38 Hz - 20 kHz |
| Sensitivity | 89 dB (2.83V/1m) |
| Impedance | 4 - 8 ohms |
| Recommended Amplifier Power | 30 - 200 W |
| Dimensions (H x W x D) | 1000 x 200 x 300 mm |
| Weight | 20 kg each |
| Cabinet Finish | Wood veneer or lacquer (depending on version) |
| Grille | Detachable magnetic grille |
| Bi-Wiring / Bi-Amping | Yes, dual binding posts |
| Input Type | Speaker cable terminals |
| Usage | Stereophonic sound reproduction |
| Maintenance | Wipe with soft dry cloth, avoid solvents |
| Safety | Place on stable surface, keep away from moisture |
| Spare Parts & Repairability | Contact authorized Indiana Line service center |
Frequently Asked Questions - Tesi 661 Indiana Line
How do I properly position the Tesi 661 speakers?
Place speakers at ear level when seated, at least 30 cm from the rear wall and 50 cm from side walls for optimal bass response. Angle them slightly towards the listening position.
Can I use the Tesi 661 as a center channel?
No, the Tesi 661 is designed as a floorstanding speaker for stereo or front channels in a surround system. For a center channel, consider a dedicated center speaker like the Tesi Center.
What is the recommended amplifier power?
The recommended amplifier power is 30 to 200 watts per channel at 4-8 ohms. Ensure your amplifier can handle the impedance of the speakers.
How do I bi-wire or bi-amp the speakers?
Remove the metal jumpers between the two sets of binding posts. Connect the high-frequency terminals to the tweeter amplifier and the low-frequency terminals to the woofer amplifier for bi-amping, or use separate cables for bi-wiring.
Is there a break-in period for the drivers?
Yes, the speakers sound best after 20-50 hours of normal use. During break-in, the suspension loosens and the drivers achieve optimal performance.
How should I clean the speaker cabinet?
Use a soft dry cloth to dust the cabinet. For stubborn marks, slightly dampen the cloth with water. Avoid alcohol, solvents, or abrasive cleaners.
Can I place the speakers near a wall?
Placing speakers too close to a wall can boost bass frequencies and cause muddiness. Maintain at least 30 cm distance from the rear wall and use the supplied foam bungs to tune the bass reflex port if necessary.
What type of speaker cable should I use?
Use high-quality copper speaker cable with a cross-section of at least 2.5 mm² (14 AWG) for lengths up to 5 meters, or thicker for longer runs. Ensure proper polarity.
Does the speaker have a warranty?
Yes, Indiana Line offers a limited warranty typically covering manufacturing defects for 2 years from the date of purchase. Keep your receipt and register the product if required.
How do I mount the speakers on stands?
The Tesi 661 is a floorstanding model and does not require stands. Place it directly on a stable level floor. Use the provided spikes to decouple from the floor and improve stability.
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