MartinLogan Helos 12 Bedienungsanleitung

user’s manual

Helos™12 Helos™22

Lawrence, Kansas, USA tel 785.749.0133 fax 785.749.5320 www.martinlogan.com

P.N. 9500089

WARNING!

• Refer servicing to a qualified

technician.

• To prevent fire or shock hazard,

do not expose this module to moisture.

• Turn amplifier off should any abnormal

conditions occur.

• Do not drive speaker beyond its rated power.

Content Check List....................... 3

Connection ............................ 4

Protect Your Investment .................. 4

Break-In ............................5

Speaker Placement ....................5

Achieving Superior Imaging ............5

Balancing Hard vs. Soft Surfaces Improves

High- and Mid-Frequency Performance .....5

Choosing a Mounting Location ..........5

Balancing Bass Output................5

Helos 12 Placement ....................5

Helos 22 Placement ....................6

Painting the Speaker Grill................. 8

Installation............................. 8

Frequently Asked Questions.............. 10

Troubleshooting ....................... 10

Contacting Customer Service ............10

General Information .................... 11

Warranty Information ................11

Serial Number.....................11

Service .........................11

Specifications ......................... 12

Serial Number:_____________________________

Record your serial number here for easy reference.

You will need this information when filling out your

warranty registration. The serial number is located

near the binding posts and on the product carton.

In accordance with the European Union

WEEE (Waste Electrical and Electronic

Equipment) directive effective August 13,

2005, we would like to notify you that this prod-

uct may contain regulated materials which upon

disposal, according to the WEEE directive, require

special reuse and recycling processing. For this rea-

son Martin Logan has arranged with our distributors

in European Union member nations to collect and

recycle this product at no cost to you.

To find your local distributor please contact the

dealer from whom you purchased this product,

email [email protected] or visit the distributor

locator at www.martinlogan.com.

Please note, only this product itself falls under

the WEEE directive. When disposing of pack-

aging and other related shipping materials we

encourage you to recycle these items through the

normal channels.

The lightning bolt flash with arrowhead

symbol within an equilateral triangle

is intended to alert the user to the presence

of uninsulated “dangerous voltage” within the

product’s enclosure that may be of sufficient

magnitude to constitute a risk of electric shock.

The exclamation point within an equilat-

eral triangle is intended to alert the user

to the presence of important operating and

maintenance (servicing) instructions in the litera-

ture accompanying the appliance.

The fire within an equilateral triangle is

intended to alert the user to the potential

of creating a fire hazard if they do not follow

the instructions.

The dollar sign within an equilateral tri-

angle is intended to alert the user that

they run the risk of causing damage that could

be potentially expensive to repair if they don’t

follow the instructions.

Helos 12 Helos 22

Content CheCk List

You will find the following items enclosed for your new MartinLogan loudspeaker. Should you require

assistance please call our service department at (785) 749-0133.

______ Install Template ______ Grill Cover

ConneCtion

WARNING! Turn your amplifier

off before making or breaking any

signal connections!

These speakers are designed with easy-to-use push-

style binding posts that accept bare wire.

Helos 12: Assign the same color to the (+) and

(–) terminals on both the speaker and the amplifier.

Make certain that all connections are tight (figure 1).

Helos 22 Stereo: Connect two sets of speaker

cables from the left and right channels of your

amplifier (figure 2).

Helos 22 Mono: Connect one sets of speaker

cables to one set of binding posts on the Helos 22

and use matching cable to bridge the second set

of binding posts (figure 3).

• Use an amp that approximately matches the

speaker’s specified power handling.

• To avoid damage, turn down the volume if

the speaker is distorting, sounds harsh, or the

bass begins to break up.

• Tone controls and equalizers may increase

the likelihood of distortion, especially at high

volumes. Use these setting sparingly.

ProteCt Your investment

Figure 3. Helos 22 bridged for mono use.Figure 2. Connecting the Helos 22 for stereo use.

Figure 1. Connecting the Helos 12.

When you first begin to play your speakers, they

will sound a bit bass shy. This is due to the high

quality, long-life components used in the drivers.

Allow approximately 72 hours of break-in at 90

dB (moderate listening levels) before any critical

listening.

Break-in

sPeaker PLaCement

Achieving Superior Imaging

These MartinLogan in-ceiling speakers offer superb

imaging and flexible placement in nearly any loca-

tion. However, for best performance and imaging

place speakers equidistant from one another and

avoid physical obstructions between the speaker

and primary listening position.

Balancing Hard vs. Soft Surfaces Improves High-

and Mid-Frequency Performance

Rooms that are “over damped” with carpeting,

drapes, and other sound absorbers can cause

your system to sound dull and lifeless. On the other

hand, rooms can have so many hard surfaces that

the system sounds like a gymnasium. Experiment

by adding or removing soft surfaces until you find

a mix that sounds good to you.

Choosing a Mounting Location

Install the Helos 12 and Helos 22 between ceiling

joists. Be careful to avoid electrical wires behind the

wall and ceiling surfaces.

Balancing Bass Output

Corner placement of these speakers will reinforce

their bass output. If you require balanced output

across the entire audio spectrum avoid mounting

these speakers in a corner.

When choosing placement follow these simple tips:

• Place a minimum of 12” (30cm) from any

wall corner.

• Place front and center channels equidistant

between 10–14 feet (3–4.3m) from the lis-

tening position.

•

Orient the tweeter towards the listening position.

Figure 5. Helos 12: Adding a center channel.Figure 4. Helos 12: 2-channel installation.

heLos 12 PLaCement

Figure 8. Helos 22: Stereo mode reproducing both

the left and right surround channels.

Figure 9. Helos 22: Wide dispersion. Mono mode

reproducing the rear center surround channel.

Figure 7. Helos 12: Distributed audio.Figure 6. Helos 12: Adding surround channels to

create a 5- or 7-channel installation.

heLos 22 PLaCement

Figure 14. Helos 22: Stereo mode in a 2-channel system.

Figure 15. Helos 22: Stereo mode in a small space.

Figure 10. Helos 22: Stereo mode reproducing left

and right side and rear surround channels.

Figure 11. Helos 22: Wide dispersion. Mono mode

reproducing the left and right side surround channels.

Figure 12. Helos 22: Stereo mode used for distrib-

uted audio.

Figure 13. Helos 22: Wide dispersion. Mono mode

used for distributed audio.

IMPORTANT! Before painting remove grill from

speakers. Also remove the cloth scrim attached

inside the grill.

1. Remove the grill from the speaker. A protec-

tive cloth scrim is attached to the back of

the grill with low-tack adhesive. Remove this

scrim by gently pulling it away from the grill.

2. Paint the grill, being careful not to plug the

holes. Allow the paint to completely dry before

proceeding. IMPORTANT! For best results

use a spray rather than a brush or roller.

3. Gently press the scrim back into place before

reinstalling the speaker grill.

Painting the sPeaker griLL

NOTE: These instructions assume the mounting sur-

face is of standard wood frame and standard sheet

rock construction. If you wish to mount the speakers

to another type of material you should contact a

bonded contractor.

NOTE: See your local dealer for new construction

pre-install brackets (sold separately).

WARNING! Before installing check

local building codes to verify compli-

ance with local regulations WARN-

ING! Before installing check for

obstructions behind drywall. To do

this make a small hole, cutting at a

45° angle (this will make the hole

easier to patch if obstructions are

found. Only cut out the mounting

hole after you have verified there are

no obstructions behind the dry wall.

WARNING! Use only speaker cable

that is rated for in-wall use. The UL

standard is CL2, CL3, and CM. The

CSA standard is FT4. WARNING!

Turn your amplifier off before making

or breaking any signal connections.

Recommended tools:

• Stud finder

• Sharp pencil or pen

• Pushpin

• Dry wall knife/saw

• Wire strippers

• Phillips screwdriver or electric drill and bit

• Tape measure

• Low-tack tape

1. Using a stud finder, position the template

completely between ceiling joists.

2. Hold or pin the template in place and mark

cutout with a pencil.

3. Remove the template and cut out the opening

with a drywall knife/saw.

4. Place fiberglass insulation 12” (30cm) or thicker

between the joists directly above the speaker.

instaLLation

Fig. 16

5 Connect speaker cable. Be consistent when

connecting speaker leads to the terminals on

the speaker. Take great care to assign the

same color to the (+) terminal on both the

speaker and the amplifier. See “Connection”

section of this manual for further details.

WARNING! Turn your amplifier

off before making or breaking any

signal connections!

6 Place speaker in hole. Gently pivot the tweet-

er stem to point towards the primary listening

position. To rotate the speaker, rotate the

entire speaker assembly. DO NOT rotate the

tweeter stem (figure 19).

7 Use a 2-inch long #2 Phillips driver and

an electric drill to lock all mounting locks in

place. Use a low clutch setting on the drill.

8 Gently press the grill cover into place.

Fig. 17 Helos 12 Fig. 18 Helos 22

Fig. 19

How do I clean my speakers? Just use a dust free

cloth or a soft brush to remove the dust from your

speakers. Do not spray any kind of cleaning agent

on or in close proximity to the drivers.

What size amplifier should I use? We rec-

ommend an amplifier rated within the suitable

amplifier range of your speaker.

Could you suggest a list of suitable electronics

and cables that would be ideal for MartinLogan

speakers? The area of electronics and cable

choice is probably the most common type of

question that we receive. It is also the most

subjective. We have repeatedly found that brands

that work well in one setup will drive someone else

nuts in another. We use many brands with great

success. Again, we have no favorites; we use

electronics and cables quite interchangeably. We

would suggest listening to a number of brands—

and above all else—trust your ears. Dealers are

always the best source for information when

purchasing additional audio equipment or cables

and will be well versed in the subject of special

safety requirements for in-wall cable.

Will exposure to sunlight affect the life or

performance of my speakers? We recommend

that you not place any loudspeaker in direct

sunlight. The ultraviolet (UV) rays from the sun can

cause deterioration of grill cloth, speaker cones, etc.

Small exposures to UV will not cause a problem. In

general, the filtering of UV rays through glass will

greatly reduce the negative effects.

FrequentLY asked questions

No Output

• Check that all your system components are

turned on, not muted, and that your balance

control (if applicable) is set correctly.

• Check to make sure your power outlet at the

wall is working.

• Check your power cords, speaker wires, and

interconnecting cables.

• Check to make sure no headphones are

plugged in.

• Swap speaker wires at your amplifier with

those of a speaker that is functioning correct-

ly. If the lack of output moves to a different

speaker the problem could be with other

equipment in your system (i.e. amp, pre-amp,

processor, etc.)

• Try hooking up a different set of speakers.

The lack of output could point to a problem

with other equipment in your system (i.e.

amp, pre-amp, processor, etc.)

Lack of Bass or Poor Imaging

• Check your speaker wires. Is the polarity cor-

rect — (+) to (+) and (–) to (–).

trouBLeshooting

MartinLogan customer service is available

Monday–Friday between the hours of 8am–5pm

(central time) by calling (785) 749-0133 or by

emailing [email protected].

ContaCting Customer serviCe

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