DSLab-Device Solution Laboratory® •High-End Audio Products from Munich: Loudspeaker, Amplifier, Audio Cables•

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129th AES Convention, Nov 4.-7. 2010 in San Francisco, CA, USA
"Coaxial Flat Panel Loudspeaker System with Dynamic Push-Pull Drive"
Convention Paper presented by Drazenko Sukalo
Abstract:

After the successful introduction of the flat television, acousticians are concerned with the design of a flat panel loudspeaker. A new patented flat panel loudspeaker construction with low manufactured depth, consisting of an array of two conventional cone drivers and a transmission line and the method for driving of them is presented. Main aim was to build a small sized flat panel box but with extended low frequency response and low-distortion output because of the extended liner diaphragm excursion. The PSpice-OrCAD® simulator was used to represent a distributed model of a lossy transmission line. The results of the simulation show the influence of the parameters of the transmission-line enclosure on the impedance curve and resonant frequency of the subwoofer driver. Among others, this paper is concerned with an active filter design for driving speaker drive units in an appropriate phase relationship in the low frequency region, by means of implementing of DPP-drive. A prototype of the flat panel loudspeaker is built according to the described design concept and the results of sound pressure level measurement are presents. The design result from work performed for DSLab and is subject to the referenced patent.

126th AES Convention Report: DSLab's New Loudspeaker with Dynamic Push-Pull Drive
Munich's High-End Show 2009 Report: A "dynamic" new Saga for DSLab

DSLab was founded with the main aim of becoming a development platform for implementing technical innovations in acoustical engineering. Consequently, the DSLab brand has been launching new products since 2004. DSLab optimizes product development by utilizing a network of experts and knowledge-based partner laboratories. Therefore DSLab creates products that will intrigue and challenge our best performers.
This is what makes DSLab to the laboratory for technical excellence and one of the DSLab's unique strengths. The individual stations on the way from the product design to the product use should drive both DSLab-engineers and our customers about your personal boundaries to new experiences: Welcome to DSLab and relive the music and engineering combined by art itself.

Our work is focused on electroacoustics, for details on:

• Loudspeaker Acoustics,
• Flat Panel-Loudspeaker Systems,
• Sound Volume Control Circuits,
• Amplifier Topology Design,
• Audio-Cable Design

New S3L-Geometry, a revolutionary breakthrough in balanced cable design
Reason Why Audible Cablexcellence: Interconnect S3L-309 and Loudspeaker Cable FMS-309

With the S3L Cable Series DSLab provides a variety of improvements which can help to increase transmission efficiency. The term "efficiency" is typically associated with how energy loss is distributed or consumed through a cable: For example the S3L-309 Interconnect, which incorporates a unique S3L conductor geometry and high-grade isolation fillers such as muscovite mica powder, or the FMS-309 loudspeaker cable, which incorporates the FMS-Cable® arrangement and the S3L-Cable® geometry.

With the S3L Cable Series DSLab introduces its latest innovation in cable design, a new S3L-Cable® geometry for audio cables. Making use of the principle of "doing more with a minimum transmission loss", the S3L-concept operates on the premise that the magnetic interaction between each of the signal conductor can be minimized in a way that each of the single signal conductors, as well as the cable in a closed loop, have the same inductance.

The S3L-309 Interconnect was developed under the conditions of excellent technical performance and mechanical robustness. These two opposing requirements, namely the use of the mica-powder for the insulator and mechanical stability of the cable, are unified in this technology to provide our customer a number of critical technical advantages and attractive selling price. The FMS-309 loudspeaker cable allows that the two key concepts previously used separately can be combined into one: The FMS-309 Loudspeaker Cable incorporates the FMS-arrangement and the S3L-Geometry. The FMS-309 loudspeaker cable was designed to test idea of lowering loss by using S3L geometry and FMS conductor arrangement. Its ultimate sound transparency combined with a large current-carrying capacity will give your audio system a superior live sound performance. Read more about S3L-Geometry in the accompanying technical pdf-article. The technical paper titled "New S3L Geometry for Loudspeaker Cables" describes these key principles and discusses the sonic benefits that they deliver to any audio system.

Basic Idea of DSLab has been created and DSLab was founded 2004 in Munich
by Drazenko Sukalo. All right reserved.

Willkommen bei DSLab-Device Solution Laboratory®
•High-End Audio: FMS-Cable®, S3L-Cable®, Lautsprecher mit dem DPP-Antrieb•

"Device Solution" steht für technische Lösungen und für die daraus hervorgebrachten Produkte. Erfahrungserkenntnisse systematisch zu analysieren und sie zu verstehen - darauf baut DSLab von Anfang an eigene Philosophie auf. Die einzelnen Stationen auf dem Weg vom sichtbaren und erfahrbaren Produkt-Entstehungs-Prozess bis hin zu dem Produkt-Gebrauch sollen sowohl DSLab-Ingenieure als auch unsere Kunden über Ihre persönlichen Grenzen hinaus zu neuen Erfahrungen treiben. Ein Erlebnis, das mit jedem DSLab-Produkt verbunden sein soll. Herzlich willkommen bei DSLab - Sophistication but minimalist design.

Neuer Lautsprecher mit dem DPP-Antrieb
Neuer Lautsprecher mit dynamischem Push-Pull-Antrieb für präzise Live-Dynamik-Wiedergabe

DPP-Antrieb, dynamischer Push-Pull Antrieb, ist ein wesentlicher Teil im Design-Konzept des DSLab-Lautsprechers. Mit diesem "State of the Art" 2-Phasen-Antrieb ist es möglich, den Spitzenwert des Gegendrucks im LS-Gehäuse zu reduzieren. Außerdem entsteht im Innenraum der Box eine maximale Kompression, bevor die Auslenkung der Membran ihr Maximum erreicht hat. So bleibt dem Verstärker eine gewisse Kraftreserve, um die Membran bis zum Peak weiter gegen die Kräfte zu zwingen. Es entsteht ein "Beschleunigungseffekt", welcher dynamische Eigenschaften bei der Sprunganregung verbessert. Eine Bassanhebung wird nicht wie üblich durch das Mitwirken eines Resonators realisiert. Infolgedessen kann eine präzise Live-Dynamik-Abbildung des Originalsignals wiedergegeben werden.