Related Manuals for Legacy Focus 20/20
Summary of Contents for Legacy Focus 20/20
- Page 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...
- Page 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: _________________________ Thank you for selecting a Legacy Loudspeaker System.
- Page 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 cabinet is impeccably finished on all exposed surfaces with select veneers.
- Page 5 Please save this packing for future transportation. If cartons become damaged or misplaced, new ones can be purchased from Legacy Audio. With an assistant, unbox the focus speaker by standing the box upright.
- Page 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 speakers approximately 7 feet apart and about 1 –...
- Page 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 0.21 14 ga. 0.0048 0.13 16 ga. 0.0079 0.18 18 ga. 0.0128 0.21 Capacitance is considered insignificant in each cable because its effect is...
- Page 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 longer than this just to transmit phase information, phase shifting is obviously not the primary concern when considering speaker cables.
- Page 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 system, audiophiles may find themselves matching their new loudspeakers to their existing amplification.
- Page 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-band energy of “heavy metal,”...
- Page 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 loud as a 15 Watt amplifier.
- Page 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"...
- Page 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 recommend the use of gold spade lugs or dual banana plugs.
- Page 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 left/right outputs, you will need a pair of Y-adapters or a signal splitter, such as a dual amp balancer, which will also allow adjustment of subwoofer/satellite input levels.
- Page 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 connecting the speaker wire to a powered subwoofer.
- Page 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 Hz and a high pass corner frequency of 450 Hz to prevent a suck out in the response at 500 Hz.
- Page 17 Switch 1: is a low frequency impedance contour when using amplifiers with high current capability. It is recommended that switch 1 be left in the up position which converts the FOCUS 20/20 from a traditional B4 alignment to a more sophisticated sixth-order Butterworth alignment, thus reducing distortion in the octave above system resonance.
- Page 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.
- Page 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.
- Page 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 composite instead of the poly version used on the original Focus.
- Page 21 Affords an unprecedented level of boundary independence, greatly easing room placement. • The increased output capability of the new FOCUS 20/20 “bottom” has allowed us to open up the silk dome and ribbon combination. Removing this pad results in better transients, with detail more remarkable than ever.
- Page 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 +/- 2 dB. Crossover frequency (Hz): 80, 300, 2.8k and 8k.
- Page 23 Notes:...
- Page 24 © 2003 Legacy Audio 150 Locust Street. Macungie, PA 18062 Phone: 610 965 0494 Fax: 610 965 4915...
Need help?
Do you have a question about the Focus 20/20 and is the answer not in the manual?
Questions and answers