4. Set up and positioning of the speakers
The Einstein The Pure loudspeaker delivers breathtaking results from a listening dis-
tance of 2.0m up to 5.5m. Due to the rigid and sealed cabinet construction of a
40mm (16’’) multi layer plywood frame and 12mm (0.5’’) massive aluminum front
and back panel the cabinet is vibration-free. As a result, this loudspeaker can de-
liver almost unlimited dynamics even in larger rooms.
We took great care in terms of design to provide an easy handling of the speaker.
The speaker is an easy load (flat 8 Ohm design) for most amplifiers and can be dri-
ven nicely and effortless. A 6 watt single ended tube amplifier is just as suitable as
an 80 watt transistor amplifier.
The Pure has a perfect phase. This is noticeable when listening to the speaker. The
focus and a three-dimensional image are excellent. Bass is tight, fast and because
of the design with a perfect timing to midrange and heights. You will be surprised
how dynamic this little speaker can perform, even in the lower frequency range.
With The Speaker you have the advantage to be able to adjust the high frequency
level as well as the upper midrange perfectly to the room acoustics by means of a
high precision three position switch on the back of the speaker. The mid position
delivers a flat frequency response which is ideal for most listening rooms.
With the next position of the switch (clockwise) you achieve a slightly increased
high frequency/upper midrange level which can be helpful in more subdued rooms
which tend to absorb higher frequencies and thus sound a bit lifeless with
diminished dynamics (slightly muffled sound as if wearing ear muffs).
The third position of the switch (anti clockwise next to the mid position) can be
useful in acoustically bright rooms (with a lack of damping material creating a slight
echo effect (reverb) also when speaking). In this position the high frequency/upper
midrange will be slightly diminished.
Further to using the switch you can also affect the sound by choosing different
angles of your speakers. To achieve a flat frequency response and thus a coherent
sound image, turn the speakers 30 degrees inward. The angle is correct when you
see the inner side of the loudspeakers from your central listening position only as a
narrow line, so the front is aligned almost exactly to you. For a heavier subdued
room with smaller reflections, you can also angle the speakers slightly more so that
you cannot see either the inside or the outside of the loudspeakers, so the front is
aligned exactly to you. If your room is sensitive in terms of acoustic, it makes sense
to play around with the speaker position a little bit for the best results. This can also
cause the speakers to be not angled at all then you have a slight roll off in the
upper frequency range, which is advantageous in rooms with greater
reverberation. The character and dynamics of the loudspeaker are not affected by
this.
Due to the inert sealed cabinet, it is possible to place the speaker right in front of a
wall or even close to a corner. Please notice that you will achieve a more intense
bass and lower midrange level by doing this.
