D p s – Triangle Magellan User Manual

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T R I A N G L E I N D U S T R I E S S . A . S - M A N U F A C T U R E E L E C T R O A C O U S T I Q U E

Avenue Flandres Dunkerque - Z.I. les Etomelles - 02200 Villeneuve Saint Germain - France - T. +33 (0)3 23 75 38 20 - F. +33 (0)3 23 75 38 21
[email protected] - www.triangle-fr.com

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D P S

T M

Dynamic Pulse System

Grand Concert, Concerto and Quatuor (only the tweeter)

TRIANGLE was one of the ﬁ rst manufacturers to turn its attention to

symmetric bipolar diffusion, resulting from research into directivity lobes to

better understand how the human ear perceives sound waves.

As early as 1988, TRIANGLE had already begun incorporating a type of

pre-DPS

into their innovative Transept II, Zenith II and Elypse systems.

A long interruption in the commercialization of this type of product allowed us

to optimize the system, particularly with regards to the driver/ﬁ lter pairing,

to enable perfect phasing of the drivers.

After numerous hours of listening and measuring tests, this conﬁ guration

demonstrated its adaptability to a variety of listening environments.

Conventional systems do not feature a driver in the rear. The sound signal

is only radiated towards the front... Positioning the system near the walls

will reinforce the low frequencies (the bass sounds). This means that

conventional speaker systems suffer from a compromised tonal quality if

they are not correctly positioned in the listening area. One way to ﬁ x this

problem with conventional speaker systems is to place them away from the

walls and then to try out different positions in the room, in search of the ideal

compromise..

In the DPS

2 system, we were able to improve the sonic quality by reducing

the directivity. The directivity is characterized by the difference between the

speakers’ frequency response in the mid-high range on the centerline and

30o off.. The wider the difference, the greater the speaker directivity.

A speaker equipped with the TRIANGLE DPS

system has front-back sound

emission.

The principle of the DPS

system, following the example of live music –

whether it is a symphony orchestra, a jazz or string quartet – will send out

almost as much sound energy to the front as to the back of the emission

point.

Let’s take two speakers, one with the DPS

system and one without,

both positioned at 40cm from a wall. We will take two measurements at

30° in relation to the speaker centerline. The dotted line represents the

measurements taken of the speaker response without DPS

while the solid

line represents the speaker response with DPS

As you can see, with the DPS

system we are able to capture the energy

outside of the listening centerline, since the frequency response at 30° is

ﬂ at. The sound volume is spread evenly in front of the listener, instead of

being focused into one beam of sound.

Thanks to the DPS

system, the speaker is less directive and thus less

susceptible to the creation of warm or cold spots in relation to the listening

environment. The speaker can be positioned more easily in the room for

acoustic reasons and thus produces a deeper and more stable sound image.

The balance of tone is preserved as it was when recorded. This means that

there is a wider opening of the sound stage without any added coloration of

the original signal.

Low Directivity at 30° Owing to the DPS 2 System

model and principle of the DPS 2 System