MartinLogan Portable Speaker Helos 10 User Manual

TM  
H e l o s 10  
u s e r ’ s  
m a n u a l  
Ma r t i n L o g a n®  
the loudspeaker technology company  
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PlaCement  
— Place the front and center channels between 7 to 10 feet  
(214 to 305cm) from the primary listening position.  
When choosing placement for the Helos 10, follow these  
simple tips:  
— Point the tweeter of all speakers towards the primary  
listening position.  
— Place the Helos 10 a minimum of 12" (30cm) from any  
wall.  
12”  
Min.  
12” Min.  
12” Min.  
7’–10’  
7’–10’  
Figure 1  2-channel installation.  
Figure 2  Adding a center channel to create a 3-channel installation.  
Figure 3  Adding surround channels to create a 5- or 7-channel installation.  
Figure 4  Using the Helos 10 for distributed audio.  
Placement  
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InstallatIon  
NOTE: These instructions must be carefully followed to  
assure that your Helos 10 is safely installed. Study them  
thoroughly before installing your Helos 10.  
NOTE: The following instructions assume the mounting  
surface is of standard wood frame and standard sheet rock  
construction. If you wish to mount the Helos 10 to another  
type of material, you should consult a bonded contractor.  
Warning! Before installing check  
local building codes to verify com-  
pliance with local regulations.  
Warning! Before installing check  
for obstructions behind the drywall  
(electrical, plumbing and other fix-  
tures). To do this make a small hole,  
cutting at a 45° angle (this will make  
the hole easier to patch if obstruc-  
tions are found). Only cut the  
mounting hole after you have  
verified there are no obstruc-  
tions behind the ceiling  
Required tools (not included):  
Stud finder  
Sharp pencil or pen  
Dry wall knife/saw  
Wire strippers  
Electric drill (with clutch)  
2-inch long #2 Phillips Driver bit  
Tape measure  
Figure 5  Dimensions of the Helos 10  
Push Pin  
Depth required above ceiling surface:  
4.5" (11.4cm)  
Required ceiling opening (includes tolerance):  
8.35" (21.2cm)  
Installation  
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Figure 6  Installation steps 1–3.  
Figure 7  Installation step 4.  
1
Using a stud finder, locate the final speaker position  
between ceiling joists.  
4
Use a dry wall knife/saw to cut out the opening.  
WARNING! Absolutely no part of the template  
should overlap a joist.  
2
3
Insert a push pin in the template center.  
Mark cutout through slots in template. Remove Template.  
Installation  
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Figure 8  Connecting the Helos 10.  
Figure 9  Installation step 6–7.  
5
Connect speaker cable. Be consistent when connecting  
speaker leads to the terminals on the Helos 10. Take  
great care to assign the same color to the (+) terminal  
on both the speaker and the amplifier.  
6
7
Place speaker in hole.  
Use a 2-inch long #2 Phillips driver and an electric  
drill to lock all 3 mounting locks in place. Use a low  
clutch setting on the drill.  
WARNING! Turn your amplifier off before  
making or breaking any signal connections!  
Installation  
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Figure 10  Installation step 8.  
Figure 11  Installation step 9.  
8
Gently pivot the tweeter stem to point towards the pri-  
mary listening position. To rotate the speaker, rotate the  
entire speaker assembly. DO NOT rotate the tweeter  
stem.  
9
Gently press the grill cover into place.  
Installation  
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CustomIzIng and PaIntIng  
Painting the Speaker Frame  
Painting the Speaker Grill  
Figure 12  Painting the speaker frame.  
Figure 13  Painting the speaker grill.  
NOTE: The Helos 10 can be either painted in place or  
IMPORTANT! The grill must be removed from the speaker  
removed from the ceiling for painting.  
before painting.  
IMPORTANT! Do not paint the rear of the speaker or the  
IMPORTANT! The scrim must be removed before painting  
surface behind the grill.  
the grill.  
1 Remove the grill from the Helos 10 (see figure 12).  
2 Press the paint shield into place (see figure 12).  
IMPORTANT! The logo badge must be removed before  
painting the grill.  
1 Remove the grill from the Helos 10 (see figure 13).  
2 Remove the logo badge (see below).  
3 In a well ventilated area paint the Helos 10 speaker  
frame, allowing frame to dry completely between coats.  
3 A protective scrim is attached to the back of the grill  
with low-tack adhesive. Remove this scrim by gently  
pulling it away from the grill cover (see figure 13).  
4 Paint the grill being careful not to plug the holes. For  
best results use a spray rather than a brush. Allow paint  
to completely dry before proceeding.  
5 Gently press the scrim and logo badge back into place  
before reinstalling the speaker grill.  
Removing the Logo Badge  
The MartinLogan logo badge on the Helos 10 is remov-  
able. To do this, gently depress the tabs on the back of the  
logo badge (see figure 14).  
Figure 14  Removing the logo badge.  
Customizing and Painting  
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Frequently asked questIons and troubleshootIng  
Frequently Asked Questions  
Troubleshooting  
How do I clean my speakers?  
Output  
Just use a dust free cloth or a soft brush to remove the  
dust from your speakers. We recommend a specialty  
com) that cleans your speakers better than anything  
else we have tried. Do not spray any kind of clean-  
ing agent on or in close proximity to the drivers  
• Check that all your system components are turned on.  
• Check your speaker wires and connections.  
• Check all interconnecting cables.  
What size amplifier should I use?  
We recommend an amplifier with 100 watts per channel  
for most applications. Probably less would be ade-  
quate when used in home theater where a subwoofer  
is employed.  
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 perfor-  
mance 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 and Troubleshooting  
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general InFormatIon  
Specifications  
Warranty and Registration  
System Frequency Response  
47–20,000 Hz ± 3 dB  
Your Helos 10 speaker is provided with an automatic Limited  
90 Day Warranty coverage.  
Sensitivity  
89 dB/2.83 volts/meter (mounted in ceiling)  
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.  
Impedance  
4 ohms  
Crossover Frequency  
2800 Hz  
For your convenience MartinLogan also offers online warranty  
Components  
Custom air core coils, polyester capacitors  
MartinLogan may not honor warranty service claims unless  
we have a completed Warranty Registration on file!  
Binding Posts  
Push style binding posts, accommodates wire up to  
5AWG  
If you did not receive a Certificate of Registration with your  
new Helos 10 speaker, you cannot be assured of having  
received new units. If this is the case, please contact your  
authorized MartinLogan dealer.  
Tweeter Type  
1” (2.5cm) neodymium soft dome  
Serial Number  
Woofer Type  
6.5” (16.5cm) high rigidity aluminum cone with extended  
throw drive assembly, thermal protection  
The Helos 10's serial number is located on the back of the  
speaker and also on the product's shipping carton.  
Power Handling  
100 watts  
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:  
Weight  
4.5 lbs. each (2 kg)  
Overall Size  
9.5” inches W × 4.62” inches D  
(20.7cm W × 11.7cm D)  
1 The 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.  
Required ceiling opening (including tolerance)  
8.35" (21.2cm)  
2 Should 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.  
Projection from wall surface  
0.4" (1cm)  
Depth required behind wall surface  
4.5" (11.4cm)  
3 If, 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  
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glossary oF audIo terms  
AC  Abbreviation for alternating current.  
Diffraction  The breaking up of a sound wave caused by  
some type of mechanical interference such as a cabinet  
edge, grill frame or other similar object.  
Active crossover  Uses active devices (transistors, ICs,  
tubes) and some form of power supply to operate.  
Diaphragm  A thin flexible membrane or cone that vibrates  
Amplitude  The extreme range of a signal. Usually mea-  
in response to electrical signals to produce sound waves.  
sured from the average to the extreme.  
Distortion  Usually referred to in terms of total harmonic  
distortion (THD) which is the percentage of unwanted har-  
monics of the drive signal present with the wanted signal.  
Generally used to mean any unwanted change introduced  
by the device under question.  
Arc  The visible sparks generated by an electrical dis-  
charge.  
ATF  The abbreviation for advanced thin film.  
Bass  The lowest frequencies of sound.  
Driver  See transducer.  
Bi-Amplification  Uses an electronic crossover, or line-  
level passive crossover, and separate power amplifiers for  
the high and low frequency loudspeaker drivers.  
Dynamic Range  The range between the quietest and the  
loudest sounds a device can handle (often quoted in dB).  
Efficiency  The acoustic power delivered for a given elec-  
trical input. Often expressed as decibels/watt/meter  
(dB/w/m).  
Capacitance  That property of a capacitor which determines  
how much charge can be stored in it for a given potential  
difference between its terminals, measured in farads, by  
the ratio of the charge stored to the potential difference.  
ESL  The abbreviation for electrostatic loudspeaker.  
Capacitor  A device consisting of two or more conducting  
plates separated from one another by an insulating mate-  
rial and used for storing an electrical charge. Sometimes  
called a condenser.  
Headroom  The difference, in decibels, between the peak  
and RMS levels in program material.  
Hybrid  A product created by the marriage of two different  
technologies. Meant here as the combination of a dynam-  
ic woofer with an electrostatic or ATF transducer.  
Clipping  Distortion of a signal by its being chopped  
off. An overload problem caused by pushing an ampli-  
fier beyond its capabilities. The flat-topped signal has  
high levels of harmonic distortion which creates heat in a  
loudspeaker and is the major cause of loudspeaker com-  
ponent failure.  
Hz (Hertz)  Unit of frequency equivalent to the number of  
cycles per second.  
Imaging  To make a representation or imitation of the  
original sonic event.  
CLS  The abbreviation for curvilinear line source.  
Impedance  The total opposition offered by an electric  
circuit to the flow of an alternating current of a single fre-  
quency. It is a combination of resistance and reactance and  
is measured in ohms. Remember that a speaker’s imped-  
ance changes with frequency, it is not a constant value.  
Crossover  An electrical circuit that divides a full band-  
width signal into the desired frequency bands for the  
loudspeaker components.  
dB (decibel)  A numerical expression of the relative loud-  
ness of a sound. The difference in decibels between two  
sounds is ten times the Base 10 logarithm of the ratio of  
their power levels.  
Inductance  The property of an electrical circuit by which  
a varying current in it produces a varying magnetic field  
that introduces voltages in the same circuit or in a nearby  
circuit. It is measured in henrys.  
DC  Abbreviation for direct current.  
Glossary of Audio Terms  
11  
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Inductor  A device designed primarily to introduce induc-  
tance into an electrical circuit. Sometimes called a choke  
or coil.  
Resonance  The effect produced when the natural vibra-  
tion frequency of a body is greatly amplified by reinforcing  
vibrations at the same or nearly the same frequency from  
another body.  
Linearity  The extent to which any signal handling process  
is accomplished without amplitude distortion.  
Sensitivity  The volume of sound delivered for a given  
electrical input.  
Midrange  The middle frequencies where the ear is the  
most sensitive.  
Stator  The fixed part forming the reference for the moving  
diaphragm in a planar speaker.  
NAC  The abbreviation for natural ambience compensation.  
THD  The abbreviation for total harmonic distortion. (See  
Passive crossover  Uses no active components (transis-  
tors, ICs, tubes) and needs no power supply (AC, DC,  
battery) to operate. The crossover in a typical loudspeak-  
er is of the passive variety. Passive crossovers consist of  
capacitors, inductors and resistors.  
Distortion)  
TIM  The abbreviation for transient intermodulation distortion.  
Transducer  Any of various devices that transmit energy  
from one system to another, sometimes one that converts  
the energy in form. Loudspeaker transducers convert elec-  
trical energy into mechanical motion.  
Phase  The amount by which one sine wave leads or lags  
a second wave of the same frequency. The difference is  
described by the term phase angle. Sine waves in phase  
reinforce each other; those out of phase cancel.  
Transient  Applies to that which lasts or stays but a short  
time. A change from one steady-state condition to another.  
Pink noise  A random noise used in measurements, as it  
has the same amount of energy in each octave.  
Tweeter  A small drive unit designed to reproduce only  
high frequencies.  
Polarity  The condition of being positive or negative with  
respect to some reference point or object.  
Wavelength  The distance measured in the direction of  
progression of a wave, from any given point characterized  
by the same phase.  
RMS  Abbreviation for root mean square. The effective  
value of a given waveform is its RMS value. Acoustic power  
is proportional to the square of the RMS sound pressure.  
White noise  A random noise used in measurements, as it  
has the same amount of energy at each frequency.  
Resistance  That property of a conductor by which it  
opposes the flow of electric current, resulting in the gener-  
ation of heat in the conducting material, usually expressed  
in ohms.  
Woofer  A drive unit operating in the bass frequencies only.  
Drive units in two-way systems are not true woofers but  
are more accurately described as being mid/bass drivers.  
Resistor  A device used in a circuit to provide resistance.  
Ma r t i n L o g a n ®  
the loudspeaker technology company  
2101 Delaware Street, Lawrence, Kansas 66046, USA tel 785.749.0133 fax 785.749.5320 www.martinlogan.com  
Rev. #060408  
©2008 MartinLogan. All rights reserved.  
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