Edgar Home Audio Projects Pure Product Manual

PURE

product

manual

The Pure Loudspeaker

Bass Engine: Heavy coils and

high quality correction

The Pure Cross-Over

Pure Product Manual

Introduction

Congratulations on your purchase of the Pure loudspeaker. With this loudspeaker you have chosen for a customised solution for both your sound, as your design wishes.

This manual will inform you about the product development and how to get the best out of your Pure loudspeaker.

Development and Technology

The Pure was designed as the name suggests; a pure musical loudspeaker without any other requirements than the reproduction of music. The design criteria emphasised on high quality sound in the complete audio bandwith. Bass needed to be low enough to effectively give a kick, though without boom. A 3-way floorstander in a neutral black colour was chosen. The cabinet is originally built by OLS, the designers of the famous Kharma speaker brand.

The setup

The Pure features a 3 way vented design with series cross-over. The units, cabinetry, cross-over components soldering and cabling are all of highest quality.

The Cabinet

The cabinet is made out of 20-25 mm MDF/particle board sandwich construction with bracing. The cabinet’s interior is lined with thick felt to achieve optimal damping. The particle board/MDF combination gives an excellent combination for the damping and distribution of the frequencies. This way, the cabinet does not add to the sound at all. Adding up to a total of over 60 Kg per speaker.

Woofer

The Eton 11-581 HEX 11” woofer is renowned for its perfect reproduction of bass. For Edgar Audio, this is currently the ultimate woofer. Though expensive, it gives the designer the opportunity to create a loudspeakers that provides the musical fundament without being annoying in the lower frequencies. The Hexacone Nomex sandwich cone needs some special attention in the midrange of the cross over, but provides excellent bass. This driver can be found in Kharma, Avalon and the GeerS Provenance loudspeakers.

Midrange

The Thiel & Partner C2-79 T6 is the ultimate midrange. While its ceramic cone provides crystal clear midrange, the typical cone break-ups are taken care of by the little ears the units carries.

High end silver soldering

Source

L1 270 uH

3.30

5.60 mH

10.00 uF

560 uH

R-res

10.00

C-res

1.000 uF

10.00 uF

122 uF

11-581HEX

C2-79

D2904-9900

Tweeter

The Scan Speak D2904 9900 Revelator Silk dome tweeter is a 28 mm silk tweeter that has a wide dispersion an excellent detail. This tweeter, coming from the Revelator series, provides the breath and depth a high end loudspeaker need.

The Bass Reflex Vent

The flared vent is located on the front-baffle of the loudspeaker. This means the speaker can be set-up relatively close to the backwall. Also, mid-frequencies that are radiated through the port are not all messed up on the back of the speaker. This setup enhances clarity and transparency. The vent, in combination with carefully adjusted internal damping of the speaker, provides real low energy output, without the typical booming bass so often associated with vented enclosures.

The Cross Over

Designed for optimal integration between low-mid-and high frequency response, the Pure is equipped with a custom built series cross over. The cross over frequency (-3 dB point) is @ 2.3 kHz. The whole crossover range is within +/- 1 dB. The cross over uses only high quality components. Mundorf Supreme and MKP Capacitors, non-inductive metal oxide resistors, and matched Tritec air core inductors and Mundorf low Rdc transformer core coils with vacuum impregnation are all hard wired with silver solder for undistorted signal processing.

Internal Wiring

Internal wiring was done with High Current OFC copper cable for low, OFC speaker cable for mids and Teflon insulated Silver plated OFC cable for highs. All connections to the terminals and the speakers themselves were soldered with Silver solder to ensure long lasting performance without degradation

Connections

The Pure is fitted with gold plated 5-way binding posts suited for single wiring. Due to the use of a series crossover, bi-wiring is no option.

Speaker Placement

The Pure is capable of presenting a stunningly true 3-D image of the musical information. As a result of the very good dispersion properties of the loudspeaker, and the cross-over topology, imaging is very real, and music is perfectly integrated in the soundstage. This effect is most optimal when the loudspeaker is placed in the freely in the room. However, the speaker is designed to perform well when placed in the proximity of (back) walls. However we advise you to keep the Pure away from corners, as this wil ruin the imaging and tightness of the sound. In that case you could have bought a low class loudspeaker. We advise to place the speakers like the

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Edgar Home Audio Projects Pure Product Manual

Specifications and Main Features

Frequently Asked Questions

User Manual