MartinLogan ML-65R Manual de usuario

ML-65r | ML-75r

user’s manual

Content Check List. . . . . . . . . . . . . . 1

Safety Warnings . . . . . . . . . . . . . . . 1

WEEE Recycling . . . . . . . . . . . . . . . 1

Cleaning and Protecting Your Investment. 2

Speaker Placement . . . . . . . . . . . . . 3

Connections and Cables . . . . . . . . . 4

Connecting the Speakers . . . . . . . . . 5

Installing the Security Stake and Cable. . 8

Frequently Asked Questions. . . . . . . . 9

Troubleshooting. . . . . . . . . . . . . . . . 9

Specifications . . . . . . . . . . . . . . . . 10

Warranty................... 11

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

Safety Warnings and WEEE Recycling

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 equilateral triangle is intended to alert the

user to the presence of important operating and maintenance (servicing)

instructions in the literature accompanying the appliance.

WARNING!

• Refer servicing to a qualified technician.

• Turn amplifier off should any abnormal conditions occur.

• Do not drive speaker beyond its rated power.

WEEE Recycling

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 product may contain regulated materials which upon disposal, accord-

ing to the WEEE directive, require special reuse and recycling processing.

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.

__ Security Stake and Cable

For this reason MartinLogan 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

info@martinlogan.com or visit the distributor locator at www.martinlogan.com.

Please note, only this product itself falls under the WEEE directive. When dis-

posing of packaging and other related shipping materials we encourage you

to recycle these items through the normal channels.

Cleaning and Protecting Your Investment

Your new all-weather speakers are constructed from durable materials to provide years

of trouble free outdoor listening enjoyment (even under extreme weather conditions).

To clean the exterior of your speakers use a soft, damp cloth or gentle spray from a

garden hose.

When considering placement we urge you to consider the following:

• Do not use a pressure washer to clean the speaker.

• Do not spray directly through the grill into the drivers.

• Do not allow speaker to come into contact with lawn and garden chemicals or

strong or abrasive cleaning chemicals.

• Do not place speaker in the discharge from a sprinkler.

• Do not place speaker in a location where they will be splashed with pool water.

• Do not place speaker in direct sunlight if at all possible.

When connecting your speaker to electronics we urge you to consider the following:

• Use an amplifier that approximately matches the speaker's specified power handling.

• To avoid damage, turn down the volume if the speaker sounds like it 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.

Security Stake and Cable (optional use)

The security stake and cable (included) may be used to inhibit theft and reduce the

chance of unauthorized movement of your speakers. See “Installing the Security Stake

and Cable” for more information.

RightLeft

Right

Left

RightLeft

L&R

L&R L&R

L&R

Figure 1. 'Left & Right' stereo from a single speaker Figure 2. Two speaker traditional 2-channel stereo

RightLeft

Right

Left

RightLeft

L&R

L&R L&R

L&R

RightLeft

Right

Left

RightLeft

L&R

L&R L&R

L&R

Figure 3. Distributed multi-speaker 'Left & Right'

stereo from a single speaker

Figure 4. Distributed multi-speaker traditional

2-channel stereo

RightLeft

Right

Left

RightLeft

L&R

L&R L&R

L&R

Speaker Placement

The self-draining design of your speakers allow installation on up to a 20° grade.

The durability of these speakers allows for a wide variety of installation options, including:

• On the ground • In a garden bed • On a deck/patio • Around a pool

Sound Coverage

With their dual tweeter design these speakers provide wide dispersion and placement

flexibility. At a reasonable listening level, sound from one speaker will cover a wide

dispersion arc of up to 20 feet (6 meters) in front of the speaker.

Placement: 'Left & Right' stereo from a single speaker (figure 1).

Ideal in small areas not suited to a stereo pair of speakers. The speaker is connected to

both Left and Right amplifier channels. Place the speaker so that the sound is “aimed”

toward the main listening area.

Placement: Two speaker traditional 2-channel stereo (figure 2).

Ideal for stereo coverage in small to medium sized areas. One speaker is connected

to the left amplifier channel and the other to the right channel (with each speaker wired

for mono). Place the speakers about 12–16 feet (3.5–5 meters) apart to achieve good

stereo imaging throughout your listening area.

Placement: Distributed multi-speaker 'Left & Right' stereo from a single speaker (figure 3).

In larger or unusually shaped areas, multiple speakers (each wired for “Left plus Right”

channel sound) may be used to eliminate the sound imbalances that occur with stereo

sound when people move around or are seated closer to one speaker than the other.

Placement: Distributed multi-speaker traditional 2-channel stereo (figure 4).

In larger areas multiple speakers (each wired for Mono) can be used in a ‘flanked’

stereo placement to provide ultra-wide stereo coverage and broader imaging.

Connections and Cables

Using Multiple Speakers on One Amplifier Channel

If you plan to use multiple speakers in series on a single amplifier channel, please

remember to check your amplifiers minimum safe speaker impedance load (ohms).

ML-65r and ML-75r speakers are rated at 8-ohms per channel when running as

"Left & Right". Wired in mono to run as a "traditional speaker" they are rated at

4-ohms. Additional speakers connected to a single amplifier channel will drop

nominal impedance. To calculate the ohm load divide the ohm rating of a single

channel by number of speakers (i.e. 8-ohm rating / 4 speakers = 2-ohm load OR

4-ohm rating / 3 speakers = 1.3-ohm load). Determine if your amp can handle

the load and plan accordingly.

Notes About Speaker Cable

Before proceeding, carefully read the precautions below.

Before running speaker cable through walls, under walkways, patios, etc.,

check local building codes or contact a qualified installer (see your dealer).

Before digging, verify location of gas lines and buried cables with local utility

companies.

Information on running speaker cable through walls, under walkways, patios, etc. is not

included in this manual. If you are not comfortable with this sort of installation, contact a

qualified installer (see your dealer).

Preparing the Cable

Always use high-quality, moisture-resistant speaker cable (see your dealer).

1. Measure and mark path from amplifier to speakers to determine length of cables.

2. Add 2–3 feet (0.6–0.9 meters) extra to allow some play when installing.

3. Select correct gauge using the chart below.

4. If the cable is to be run underground it must be rated for direct burial and/or

enclosed in PVC pipe to prevent deterioration over time (see your dealer).

5. Cut cable to required length and strip outer casing about 2 inches (5cm) on both ends.

6. Strip inner insulation on both wires back about 1

2-inch (1.25cm) on both ends.

The following chart identifies the minimum gauge requirements for cable by length.

Minimum Wire Gauge Requirements

Length Gauge/Diameter

Less than 15 feet (4.5 m) 16 awg / 0.05 inch (1.3 mm)

Less than 30 feet (9 m) 14 awg / 0.06 inch (1.6 mm)

More than 30 feet (9 m) 12 awg / 0.08 inch (2 mm)

Connecting the Speakers

WARNING! Turn your amplifier off before making or breaking any signal con-

nections. This will avoid damage which could result from accidental shorting

of speaker cables.

Test your speakers before installing the cables! Before permanently installing cable in

your landscaping, place your speakers in the desired location and listen for:

• Volume: Walk around the area and ensure that sound is coming from each

speaker, and that it is balanced throughout the listening area.

• 'Left & Right' stereo from a single speaker (figure 1): When sitting in the main

listening area, sound should be spacious and clear.

• Multi-speaker Distributed multi-speaker 'Left & Right' stereo from a single speaker

(figure 3): Walk around your entire area. Adjust position of speakers for uniform

sound coverage.

• Two speaker traditional 2-channel stereo (figure 2) and distributed multi-

speaker traditional 2-channel stereo (figure 4): When sitting in the main listening

area, sound should be spacious and clear. Fine-tune placement to achieve optimal

imaging. This may involve moving speakers a small amount in one direction or the

other, or turning speakers slightly to point toward the listening area.

If a speaker is not working correctly, refer to the “Troubleshooting” on page 10 of this

manual, otherwise finalize connections.

NOTE: Connect wires with wire nuts (not included) following wire nut manufacturer’s

instructions. Fill nuts with waterproof silicone sealant (not included) to prevent

deterioration over time — do this only after testing speaker placement.

Connecting 2-Channels of Amplification (Left & Right) to a Single Speaker (figure 5)

In this connection method, 2-channels of amplification (left-channel and right-channel)

are attached to a single speaker to achieve stereo sound.

1. Connect one speaker channel at a time to your receiver/amplifier. Connect the

right (+) amplifier terminal to the right red (+) speaker input wire and the right (–)

amplifier terminal to the right black (–) speaker input wire.

2. Connect the left (+) amplifier terminal to the left red (+) speaker input wire and the

left (–) amplifier terminal to the left black (–) speaker input wire.

Figure 5. Connecting 2-Channels of Amplification (Left & Right) to a Single Speaker

Figure 7a. Lay the speaker on its back. Figure 7b. Feed cable through eyelet.

Figure 7c. Feed stake through cable. Figure 7d. Drive the stake into the ground.

Figure 6. Connecting 1-Channel of Amplification (Left OR Right) to a Single Speaker

Optional:

3. Twist matched wires together, then cap each bundle with a wire nut.

4. Fill wire nuts with silicone.

5. Speaker cable can now be buried, where burying is required.

Connecting 1-Channel of Amplification (Left OR Right) to a Single Speaker (figure 6)

In this connection method, the input wires from the speakers will be joined together so

that the entire speaker can be driven from one channel of amplification (Left OR Right).

1. Connect the (+) amplifier terminal to both the right red AND left red (+) speaker

input wires.

3. Connect the (–) amplifier terminal to both the right black AND left black (–) speaker

input wires.

4. Twist matched wires together, then cap each bundle with wire a nut.

5. Fill wire nuts with silicone.

6. Speaker cable can now be buried, where burying is required.

Installing the Security Stake and Cable (optional)

1. Without moving the speaker out of position, lay the speaker on its back so that the

bottom is exposed (figure 7a).

2. Feed the looped end of the security cable (the end without spike attached) through

the factory-installed eyelet on the speaker's bottom (figure 7b).

3. Feed the spike through the loop in the cable (figure 7c).

3. Pull gently on the cable until it is snug around the eyelet.

4. Using a rubber mallet, drive the security stake into the ground close to where the

speaker will sit. It must be completely under the surface of the ground. Give cable

a gentle tug to make sure stake is firmly planted in the ground (figure 7d).

Frequently Asked Questions

How do I clean my speaker? See “Cleaning and Protecting Your Investment” on

page 3 of this manual.

What size amplifier should I use? We recommend an amplifier rated within the suit-

able 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 num-

ber 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 recom-

mend that you not place any loudspeaker in direct sunlight. The ultraviolet (UV) rays

from the sun can cause deterioration of speaker cones, etc. For installation of an all-

weather speakers we recommend as little direct sunlight as an installation will allow.

Troubleshooting

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

correctly. 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. 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.)

Lack of Bass or Poor Imaging

• Check your speaker wires. Is the polarity correct — (+) to (+) and (–) to (–)?

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