Theater i - Speaker Martin Logan - Free user manual and instructions
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| Product Type | Center Channel Speaker |
| Brand | MartinLogan |
| Model | Theater i |
| Drivers | 1 x XStat CLS electrostatic panel (center), 2 x 5.25" cast-basket woofers |
| Frequency Response | 48 Hz – 20 kHz ± 3 dB |
| Impedance | 4 Ω (compatible with 4–8 Ω amplifiers) |
| Sensitivity | 90 dB (2.83 V/m) |
| Power Handling | 100–200 W RMS (recommended amplifier 20–300 W) |
| Crossover Frequency | 500 Hz (electrostatic to woofers) |
| Dimensions (W x H x D) | 26.5 x 7.5 x 14.0 inches (673 x 191 x 356 mm) |
| Weight | 28.0 lbs (12.7 kg) |
| Enclosure Type | Bass-reflex with dual rear-firing ports |
| Finish Options | Black gloss, Cherry gloss |
| Input Type | Single-wire binding posts (bi-wire capable) |
| Power Requirement | Passive speaker; no external power needed |
| Main Functions | High-fidelity center channel for home theater; detailed dialogue reproduction; wide soundstage |
| Cleaning & Maintenance | Use dry microfiber cloth for cabinet; gentle vacuum with soft brush for electrostatic panel; avoid liquids |
| Safety Precautions | Keep away from moisture; do not block ports; ensure stable placement; avoid excessive heat or humidity |
| Spare Parts & Repairability | Replaceable electrostatic panel and woofers; contact MartinLogan service for parts |
| General Information | Designed for use with MartinLogan subwoofer for full-range system; compatible with most AV receivers |
Frequently Asked Questions - Theater i Martin Logan
What is the recommended amplifier power for the Theater i?
The Theater i has a power handling of 100–200 W RMS. MartinLogan recommends an amplifier rated between 20 and 300 watts per channel into 4 ohms for best performance.
Can I mount the Theater i on a wall?
The Theater i is designed for shelf or stand placement. It is not wall-mountable out of the box. You may use third-party shelves or stands rated for its weight.
How do I clean the electrostatic panel?
Use a soft brush attachment on a low-suction vacuum to gently remove dust from the panel. Avoid touching the panel with fingers or using liquids. For stubborn dust, a dry microfiber cloth can be used lightly.
What is the correct impedance setting on my AV receiver?
Set your receiver to 4 ohms if available. The Theater i has a nominal impedance of 4 ohms, and some receivers have a switch for 4/8 ohm operation. Check your receiver manual.
Does the Theater i require a subwoofer?
For a full-range experience, MartinLogan recommends a subwoofer, as the Theater i rolls off at 48 Hz. A subwoofer will handle deeper bass effects and take load off the main speakers.
Can I bi-wire or bi-amp the Theater i?
Yes, the Theater i has dual binding posts that allow bi-wiring or bi-amping. Remove the jumpers between the posts to separate the low and high frequency sections.
What is the warranty on the Theater i?
MartinLogan typically offers a 5-year limited warranty for speakers and 2 years for electronics. Check your purchase documentation for exact terms.
How far should the Theater i be from the wall?
Since the Theater i has rear-firing ports, allow at least 6 inches (15 cm) of clearance behind the speaker for proper bass response and to avoid port noise.
Can I use the Theater i as a left/right speaker?
While designed as a center channel, it can be used as a left/right speaker in a smaller system. However, it performs best as a dedicated center to match other MartinLogan electrostats.
How do I break in the Theater i?
No formal break-in is required. Play the speaker at moderate volume for 20–30 hours to allow the components to settle for optimal performance.
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Product information
Brand : Martin Logan
Model : Theater i
Category : Speaker