General Information, Specifications, Serial Number

General Information

Specifications

System Frequency Response

47–20,000 Hz ± 3 dB

Sensitivity

89 dB/2.83 volts/meter (mounted in ceiling)

Impedance

Mono: 4 ohms

Stereo: 8 ohms x 8 ohms

Crossover Frequency

2600 Hz

Components

Custom air core coils, polyester capacitors

Binding Posts

Two sets push style binding posts, accommodates wire up to 5AWG

Tweeter Type

Two 0.75” (1.9cm) neodymium soft dome

Woofer Type

6.5” (16.5cm) high rigidity aluminum cone with extended throw drive assembly, thermal protection

Power Handling

Mono: 100 watts

Stereo: 50 watts x 50 watts

Weight

4.5 lbs. each (2 kg)

Overall Size

9.5” inches W × 5.12” inches D (24.2cm W × 13cm D)

Required ceiling opening (including tolerance) 8.35" (21.2cm)

Projection from wall surface 0.37" (1cm)

Depth required behind wall surface 5" (12.7cm)

Warranty and Registration

Your Helos 20 speaker is provided with an automatic Limited 90 Day Warranty coverage.

You have the option, at no additional charge, to receive a Limited 5 Year Warranty coverage. To obtain the Limited 5 Year Warranty coverage you need to complete and return the Certificate of Registration, included with your speakers, and provide a copy of your dealer receipt to MartinLogan within 30 days of purchase.

For your convenience MartinLogan also offers online warranty registration at www.martinlogan.com.

MartinLogan may not honor warranty service claims unless we have a completed Warranty Registration on file!

If you did not receive a Certificate of Registration with your new Helos 20 speaker, you cannot be assured of having received new units. If this is the case, please contact your authorized MartinLogan dealer.

Serial Number

The Helos 20's serial number is located on the back of the speaker and also on the product's shipping carton.

Service

Should you be using your MartinLogan product in a country other than the one in which it was originally purchased, we ask that you note the following:

1The appointed MartinLogan distributor for any given country is responsible for warranty servicing only on units distributed by or through it in that country in accordance with its applicable warranty.

2Should a MartinLogan product require servicing in a country other than the one in which it was originally purchased, the end user may seek to have repairs per- formed by the nearest MartinLogan distributor, subject to that distributor’s local servicing policies, but all cost of repairs (parts, labor, transportation) must be borne by the owner of the MartinLogan product.

3If, after owning your speakers for six months, you relocate to a country other than the one in which you purchased your speakers, your warranty may be transferable. Contact MartinLogan for details.

10 General Information

20 specifications

MartinLogan has long been recognized as a leader in the world of high-end audio, and their speakers, particularly the MartinLogan 20 and 40 models, embody the pinnacle of their innovative approach to sound reproduction. These speakers integrate cutting-edge technology with stunning design, ensuring that audio enthusiasts receive an unparalleled listening experience.

The MartinLogan 20 is a testament to the brand's commitment to electrostatic speaker technology. One of its standout features is the proprietary, high-performance, foldable electrostatic transducer. This design allows for an extremely fast response time and remarkable clarity in sound reproduction, capturing every nuance of the audio. The speaker also boasts a frequency response that extends from 34 Hz to 20 kHz, ensuring rich, deep bass and crystal-clear highs.

On the other hand, the MartinLogan 40 model enhances this experience with additional features geared toward an even wider sound stage. It incorporates a unique Active Bass Control system, which allows users to adjust low-frequency performance to match their room's acoustics. This adaptability is complemented by a dynamic woofer designed to deliver powerful bass without distortion, even at high volumes.

Both models utilize advanced materials, such as the lightweight and rigid aluminum frame construction, which contributes to a more focused and accurate soundstage. Additionally, they feature advanced crossover networks that seamlessly blend the electrostatic and dynamic drivers, ensuring a cohesive sound that immerses the listener.

The aesthetic appeal of MartinLogan speakers cannot be overlooked. The 20 and 40 models feature elegantly curved cabinets with a striking finish that complements any décor. Beyond their beauty, the speakers are engineered for optimal placement in various environments, including home theaters and dedicated listening spaces.

Moreover, the models are equipped with bi-wire capability, allowing audiophiles to use separate cables for the high and low frequencies. This feature enhances the overall performance and offers a level of customization for advanced users.

In conclusion, MartinLogan's 20 and 40 models represent a harmonious fusion of groundbreaking technology and artistic design. With their exceptional sound quality, innovative features, and elegant aesthetics, these speakers are well-suited for discerning audiophiles who demand the best from their audio equipment. Whether for a casual listening session or an immersive cinematic experience, these speakers elevate the auditory journey to new heights.