Summary of Focus 20/20
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2 registration 3. Owners record 4. The cabinetry / our commitment setup 5. Unpacking your speakers 6. Speaker placement 9. Hook up cables 12. Amplification 16. Speaker connections 17. Fine-tuning technology 18. Designer’s note 22. Specifications.
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3 the model and serial numbers are located on the rear of the unit. Record these numbers in the spaces provided below. Refer to them when calling upon your dealer regarding this product. Model no. _______________________________ serial no. _______________________________ date of purchase: __________...
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4 handcrafted 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 ...
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5 your new speaker system has been very carefully packaged to insure that it travels to you safely. Each speaker is protected by a heavy outer carton with v-board corner protectors. Molded foam end caps are used to protect the elegant cabinetry, and a plastic liner is provided as waterproofing. Plea...
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6 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 speaker...
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7 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 insignifican...
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8 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 long...
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9 ideally the loudspeaker would be among the first components selected when assembling a playback system. This would allow the user to choose an amplifier capable of delivering adequate amounts of current into the frequency dependent load presented by the loudspeaker. However, when upgrading a syste...
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10 how much power will your new speakers need? That ultimately depends on your listening environment and musical tastes. As little as five watts per channel should drive them to a level satisfactory for background music. A typical 45 watt per channel receiver may fill a room with the compressed mid-...
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11 when an amplifier is unable to fulfill your loudspeakers demands, a damaging harmonic spike may be leaked to the high frequency drivers. Another important point regarding loudness is that the db scale is a logarithmic one. This means that a 150 watt amplifier will potentially sound only twice as ...
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12 the terminal plate 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, th...
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13 biwiring biwiring allows one to minimize the cable losses between the amplifier and the loudspeaker. This is accomplished with a single stereo amplifier by running separate sets of cables to the satellite section and the subwoofer section from the same channel of amplification. When biwiring, we ...
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14 1. Vertical biamping vertical biamplification requires the dedication of a single stereo amplifier for the left speaker, and another stereo amplifier for the right speaker. This configuration improves channel separation and can improve imaging slightly. If your preamp does not have two sets of le...
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15 either the subwoofer or satellite binding posts. Note: this only applies to loudspeakers that incorporate the subwoofer and satellite section in a single enclosure. It does not apply towards the separate powered subwoofer/satellite configuration. You must always observe the polarity when connecti...
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16 also helpful is bass equalization and subsonic filtering. When cascading active filters with the existing passive filters within the speaker system, be sure to allow for adequate frequency overlap. For instance, if the passive crossover is set at 500 hz, select a low pass corner frequency of 600 ...
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17 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 i...
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18 focus 20/20 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 20/20 s...
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19 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...
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20 the bass section of focus 20/20 features the following improvements from focus: • a newly engineered subwoofer section featuring dual 12”drivers from the legacy “true physics” series, the same used in the deep impact subwoofer. • diaphragms for the dual 12” drivers are made of a carbon/pulp compo...
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21 • a new 12” mid woofer has been developed to smooth the transition from the mid bass to lower midrange region. The addition of this driver improves performance in three critical areas. A. Allows the subwoofers to independently stroke long, without blurring mid bass attack and punch. B. Reduces in...
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22 system type: 7 drivers, 5 way. Tweeter: 4” ribbon. Midrange: 1.25” soft textile dome. Midwoofer: (1) carbon-reinforced mid-bass radiator. Subwoofer: (2) 12” carbon-reinforced. Low frequency alignment: b6 assisted. Sensitivity: 95 db @ 2.83 v/1m. Frequency response: 16 hz - 30 khz, 26 - 20 khz +/-...
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23 notes:.
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24 © 2003 legacy audio 150 locust street. Macungie, pa 18062 phone: 610 965 0494 fax: 610 965 4915.