Legacy Focus Bedienungsanleitung

1. Warranty

2. Unpacking/Speaker Placement

3. Designer’s Note

5. The Cabinetry/Our Commitment

6. Connections/Fine-tuning

7. Specifications

8. Hook-Up Cables

9. Amplifier

10. For The Tweakers

11. Biamplification

Thank you for selecting a Legacy Loudspeaker System. These

hand-crafted instruments will provide you with many years of

listening enjoyment. Please take a few moments to read this brief

manual to insure maximum benefit from your speaker system.

Limited Warranty

Legacy Audio, Inc. extends to the original owner coverage of

defects in materials and workmanship for a period of 90 days

from the date of purchase. To extend this warranty to 10 years,

please fill out the enclosed warranty card and return to Legacy

Audio.

This warranty does not include a) damage in shipment, b)

damage caused by accidental or intentional misuse or abuse, c)

units not registered with Legacy Audio, d) damage resulting from

unauthorized modifications or repairs. Liability is limited to the

repair or replacement, at our option, of any defective component

and shall not include property or consequential damages which

may result from the failure of this product.

Customer Record

Model No. ____________________________

Serial No. _____________________________

Date of Purchase ____ / ____ / ____

Owner _______________________________

Street Address _________________________

City ______________ State _____ Zip _____

Unpacking

Your new speaker system has been very carefully packaged to

insure that it travels to you safely. Each speaker is protected by a

double-wall outer carton with heavy V-board corner protectors.

Molded foam end caps are used to protect the elegant cabinetry,

and a plastic liner is provided as waterproofing.

Please save this packing for future transportation. If cartons

become damaged or misplaced, new ones can be purchased from

Legacy Audio.

The first unpacking step is to fold back the flaps at the top of

the outer carton.Then carefully stand the loudspeaker on its head

and slip away the outer cardboard. Be careful not to push in on

the speaker components located on the front and rear of the

cabinet. Remove cornerboard, foam caps and outer plastic.

Speaker Placement

To allow more flexibility in seating arrangements, your Legacy

loudspeaker is designed for broad lateral coverage. Optimal

listener position is actually about 5 to 15 degrees off the axis

normal to the loudspeaker baffle.

Assuming a listener distance of about ten feet, begin by

placing the speakers approximately 7 feet apart and about 1 - 3

feet from the wall behind them. In most rooms this will afford a

speaker position at least 2 feet or more from the side walls. The

amount of recommended "toe-in" is a function of the listening

angle. As the overall listening angle increases from 40 degrees,

the amount of toe-in should increase.

Your Legacy speaker is optimized for a flat response in the far

field. Best results are obtained vertically with the listener's ear at

tweeter level with the loudspeakers gently toed in toward the

listener. Increasing the degree of toe-in is recommended when

placement next to sidewalls is required.

Placing the loudspeaker or the listener near a room boundary

will generally increase low frequency impact. If you are forced to

position one or both of your loudspeakers in a corner, be

prepared to reduce bass output via the control switches on the

rear terminal plate of each loudspeaker. You may also wish to

reduce low frequency output with your preamp's bass tone

control. If you do not have tone controls on your preamp, we

can provide you with an external custom passive attenuator

which can also be tuned for treating standing wave ("room

boom") problems.

Designer’s Note from Bill Dudleston

FIELD OPTIMIZED CONVERGENT SOURCE

FOCUS utilizes controlled directivity to improve image

resolution.This special driver array minimizes coloration’s due to

floor and ceiling reflections.The speaker system offers more than

400 square inches of total piston area, more than double of our

closest competitor.

The FOCUS system represents the latest advancements in

controlling acoustic radiation patterns with conventional speaker

systems.Two 7” double layered Kevlar® Hexacone drivers are

strategically separated to provide a null off-axis vertically. Floor

and ceiling are reduced by an incredible 20 decibles through the

critical midband (500 Hz-4 kHz).This reduction of early

reflections allows fragile low level ambient information found in

recordings to be heard over the listening room’s sonic signature.

Images are clearly defined and localization is consistent with

frequency.

The Kevlar Hexacone drivers used in FOCUS are among the

most expensive and elaborate ever developed.The cone material

is more than 70 times stiffer than polypropylene and paper

cones, yet weighs 30% less.An enormous motor structure and a

vented pole piece assure unsurpassed dynamics and clarity.These

special midrange drivers are mounted into rigid PVC

subenclosures, which are filled with polyester fiberfill to absorb

the backware energy.

The end result is a speaker system with literally the finest

midrange qualities in the world, next to our Whisper that is!

When one of our competitors performed a distortion analysis on

this speaker, measurements were so close to the baseline that

they thought their equipment was malfunctioning!

The treble region is handled precisely by a specially treated

1.25” woven dome tweeter with a 48 ounce magnet structure.

This dome hands off to a 4” ribbon supertweeter outfitted with a

custom designed waveguide faceplate for controlled dispersion.

This ribbon provides an ultra-linear horizontal radiation pattern

for a broad listener sweet spot and effortless shimmering highs.

Gone is the irritating “tingy” treble associated with so many

underdamped metal domes.

The bass frequency range is controlled by three long throw

12” subwoofers with carbon impregnated cones.A vented 6th

order alignment provides the deepest extension with far less

distortion than a conventional sealed box or ported systems.

FOCUS is endowed with low frequency dynamic capabilities

among the greatest ever found in and audiophile speaker.The

system’s linear bass output betters models such as the B&W 801

and KEF 105/3 by 9 decibals and more!

The crossover network has been optimized using the most

sophisticated software available.The highest quality film

capacitors, air core inductors, and ferrite bobbins are hand-tuned

and point point wired with fine solders.The

low frequency crossover is isolated from the

satellite section to prevent magnetic

interactions.

Outfitted with two pair of gold-plated

binding posts, the FOCUS system is biwirable

and biamp capable.All internal wiring is our

own Legacy Oxygen free copper speaker

cable.

The Cabinetry

Beneath the surface of FOCUS’s elegant exterior lies rigid

MDF construction. Interlocking joinery maximizes the strength of

the cabinet parts. Polyester fiberfill is selected for internal

damping.A sharp rap on the enclosure will leave you with little

more than bruised knuckles.

Each cabinet is impeccably finished on all exposed surfaces

with select veneers.The exquisite finish is hand-rubbed several

times to assure a patina at home with the most elegant decor.

Our Commitment

A great deal of forethought, love and satisfaction is instilled

into each piece of Legacy workmanship.We take pride in coming

to know many of our customers on a first name basis.

Your purchase of this product is backed by the renowned

“Legacy Satisfaction Guarantee”. We continue to stand behind it

with a solid ten year warranty, more than twice the industry

standard.

Connections

At the rear of each of your loudspeakers you will find a

terminal plate housing two rows of jumpered binding posts.The

upper row is the input to the “satellite” portion of the speaker.

The lower row is the input to the “subwoofer” portion of the

speaker.When left in place, the factory-installed jumper bars

allow the speaker to be driven with a single channel of

amplification. (if biamping, or biwiring, be sure to remove the

jumper bars. More on this later!).

Connect each channel of amplifier to a loudspeaker via the

five-way gold binding posts provided. Dual banana plugs or gold

plated spade lugs are recommended means of termination.

Be sure that you observe polarity when making the

connections.The positive (+) terminal of the amplifier should be

connected to the positive terminal of the loudspeaker.The

negative (-) terminal of the amplifier should be connected to the

negative terminal of the loudspeaker.

Fine-tuning

To facilitate proper set-up of your speakers in a variety of

room situations, we have included several heavy duty toggle

switches on the terminal plate, located on the back of the

loudspeaker. All switches in the “up” position represent the

“anechoic flat” position.

Switch 1: is a low frequency impedance contour when using

amplifiers with high current capability. It is recommended that

switch 3 be left in the up position which converts the

FOCUS from a traditional B4 alignment to a more

sophisticated sixth-order Butterworth alignment, thus

reducing distortion in the octave above system

resonance.

Switch 2: can be used in the “down” position to soften

midrange presence.This switch can be used to reduce

the forwardness of certain recordings.

Switch 3: can be used in the “down” position to reduce

edginess in the lower treble region due to room flutter

or bright program material.

Specifications

System Type: 7 driver, 4 way.

Tweeter: 4” Ribbon.

Midrange: 1.25” soft textile dome.

Midwoofer: (2) 7” Kevlar®.

Subwoofer: (3) 12” Polypropelene.

Low Frequency Alignment: B6 Assisted.

Sensitivity: 98 dB @ 2.83 V/1m.

Frequency response: 16 Hz - 30 kHz +/- 2 dB.

Crossover frequency (Hz): 180, 2.2k, 12k.

Recommended Amplification: 10 - 400 watts/channel.

Impedance: 4 ohms.

Dimensions: 55” H x 15”W x 13” D

Weight: 175 lbs.

Hook-up Cables

The ideal conductor would have negligible resistance,

inductance and capacitance. The table below shows how a few

actual speaker cables measure up.

Cable Ωs/ft pF/ft µH/ft

12 ga. 0.0033 24 0.21

14 ga. 0.0048 17 0.13

16 ga. 0.0079 16 0.18

18 ga. 0.0128 28 0.21

Capacitance is considered insignificant in each cable because

its effect is well out of the audio bandwidth; inductance can be

decreased (at the expense of increased capacitance) by keeping

the conductor pair closely spaced.

How long would a cable have to be before inductance effects

would impinge on the audio spectrum? Approximately 300 feet

of 12 gauge would be required to establish a corner frequency of

20 kHz with an 8 Ohm loudspeaker. As you see, inductance is

not a problem for most of us.

What about phase shift due to frequency dependent travel

times down the speaker cable? Measurements show that 100 Hz

waves will be delayed about 20 billionths of a second behind 10

kHz waves when traveling to the end of a 10 foot speaker cable.

Since the cilia of the ear requires 25,000 times longer than this

just to transmit phase information, phase shifting is obviously not

the primary concern when considering speaker cables.

What about resistance? Finally we are getting somewhere.

Resistance is the controlling factor of the amplifier/loudspeaker

interface.

Excessive resistance can cause major shifts of speaker

crossover frequencies. The lower the impedance of the

loudspeaker, the greater the effects of series resistance. A run of

20 feet of 18 gauge can cause up to 10% deviations of crossover

center frequencies. That same 20 feet can undamp your damping

factor and reduce your systems’ output by one-half decibel.

In summary, there are no perfect cables. The best way to

approximate the ideal would be to keep loudspeaker leads as

short as is practical.

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