3
Unpacking
Work in an open area.
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Lift with your legs and not your back, and with the assistance of a friend.
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Lay box horizontal and cut banding wrap. While still laying down, remove the top half of the box.
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Roll the box so the exposed Definition faces the floor, remove the other half of the box.
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Remove top and bottom closed-cell foam plates. Leave the middle foam bulkheads.
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If not on carpet, place a pad under the bottom of the loudspeaker to protect the loudspeaker’s base from damage when you
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stand it upright.
Now push/lift the top of the loudspeaker up, the base will touch the floor, continue lifting the top and stand the speaker up.
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Note: Hard surface flooring feet are installed at the factory. Leave these in place while you move the loudspeakers around. Once you
have found where in the room they sound and look their best, and you have carpet, you may wish to lay the speaker over on it’s face
or side and replace the ball-end feet with the included carpet spikes.
Using internal subwoofer amplifier
(+) mark on Definition Mk1.5 input connectors correlates to positive (outward) driver diaphragm motion.
Connect loudspeaker cable to binding post. Connect the (+) output of your audio amplifier to the (+) side. Then (–) to (–). This will
power the two full-range drivers plus super-tweeter on the front of the Definition Mk1.5. It will also supply signal, but no power , to
internal sub-amp which will power the rear woofers.
Plug the supplied Zu Birth™ power cable in the wall outlet and then in to the Definition Mk1.5’s power inlet. There is no on/off switch.
When plugged in, the internal sub-amp remains on. No need to worry about heat or waste, the amp is a class AB design and uses
very little power when idle.
Next, set your sub-amp volume knob at the twelve o’clock position. This is a good starting point. You can adjust the subwoofer
volume to match room, gear, recordings, and user preference.
Note on connectors: Definition Mk1.5 features Cardas® pure copper unplated binding posts and are internally cold forged to the
internal cabling (terminated using a high pressure crimp system in place of solder). They accept standard and oversized spade lugs,
bare wire and banana plug. While they accommodate a wide array of terminals we recommend 1/4” spade lugs with recommendation
on the use of our unplated pure copper spades. In some countries, 4mm banana plugs are considered a safety hazard, and of similar
interest the binding posts featured on the Definition Mk2 loudspeakers comply with CE standards regarding loudspeaker binding post
inputs.
Initial placement
While your initial placement for the Definition loudspeakers may not be the sonic best, Definitoin is not hyper-sensitive to placement.
Satisfactory room integration is attainable from nearly any position within a room. Nevertheless, you will be rewarded if you work
on setting them up for the best sound. The following details may assist you in the pursuit of timbre, tone, and natural stereophonic
recreation.
Placement for left / right front: Definition Mk1.5 loudspeakers should be placed to work with the natural acoustics of the room rather
than fight them. The following basic points should be followed.
Definition Mk1.5 loudspeakers should point at the listening position. We recommend starting with “toe-in” so each loudspeaker
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faces the center of the listening area. Less toe-in should be tried as a finishing touch on dialing in treble timbre and
stereophonic presentation.
From the listening position, Definition loudspeakers must be equidistant for compelling stereo performance.
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Generally, Definition loudspeakers should be placed no closer than 2 feet (60cm) from side wall. This distance is measured
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from the center point (Y axis) of the loudspeaker and not the side.
Angle at the central listening area should be between 60° and 110°. Wider is usually better for both stereo and home theater.
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Ball-end feet and carpet spikes
Hard surface ball-end feet have been pre-installed in the Definition Mk1.5. Carpet spikes have been included in the package. Ball-end
footers are designed to be gentle on hard surface flooring but will likely mar flooring if the loudspeaker is slid, we recommend that
you lift and move the loudspeakers to avoid damaging your flooring while positioning.
CAUTION, make sure you’re snaps, jewelry, and belt buckle free when positioning the loudspeakers.
For carpeted floors we recommend that you use the supplied carpet spikes once you have decided where the Definition 1.5 are going
to stand. This will provide increased support to the loudspeaker, allowing it to couple with the structure of the floor and not wobble
about. Carpet spikes will also reduce or eliminate permanent carpet impression.
Carpet or hard surface, we recommend that you level the loudspeakers by adjusting the spike or ball-end studs. Each loudspeaker
should stand straight and level and all four contact points should be equally weighted.
Placement fine tuning
Perhaps it has been the lack of skilled engineers, maybe audiophiles at large have lacked discipline; for whatever reason the
current consumer playback world is lost in its conception of acoustics and the nature of sound—much has been written in consumer
magazines but little of it is genuine. Original recommended works on the subject include: Music, Physics and Engineering (formerly
titled Musical Engineering) by Harry F. Olson, Science & Music by Sir James Jeans, Fundamentals Of Musical Acoustics by Arthur H.
Benade, Fundamentals Of Acoustics by Lawrence E. Kinsler, Austin R. Frey, Alan B. Coppens and James V. Sanders. There are several
other good sources of researched data; these represent a good cross-section.
Summary of Contents for Mk1.5
Page 1: ...1 Mk1 5 Guidebook...
