EP0677978B1 - Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher - Google Patents
Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher Download PDFInfo
- Publication number
- EP0677978B1 EP0677978B1 EP95105163A EP95105163A EP0677978B1 EP 0677978 B1 EP0677978 B1 EP 0677978B1 EP 95105163 A EP95105163 A EP 95105163A EP 95105163 A EP95105163 A EP 95105163A EP 0677978 B1 EP0677978 B1 EP 0677978B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- amplifier
- conductors
- appliance according
- return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000008054 signal transmission Effects 0.000 title description 10
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010910 field residue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
Definitions
- the invention relates to a device for signal transmission from an amplifier to a speaker according to the preamble of claim 1.
- a speaker cable is said to be that supplied by the amplifier Signal in all frequency ranges is unadulterated transfer. Because HiFi power amplifiers, however, basically Voltage amplifier with higher current carrying capacity are and have an output resistance that is about 0 ohms, but the speaker is a voice coil current generate proportional sound signal the electrical properties of the line connection essential.
- the electrical properties a speaker cable can be through the Resistance covering, the dissipation covering, the inductance covering and describe the capacity.
- the ohmic resistance of the cable is due to the conductivity of the conductor material and its geometric Dimensions determined. The derivative is based on the dielectric Losses attributed to inductive Resistance of the cable is a consequence of the through the electrical current flow-establishing magnetic field. The inductive resistance increases with increasing frequency and leads to a phase shift between current and tension.
- phase errors cause one Blur locability both in width and even in the depth of the room. Because the ear is oriented not just the intensity differences, but also on the phase relationship between the basic and Overtones. In this respect, the transmission behavior high demands are placed on speaker cables.
- the invention has for its object a device for signal transmission from an amplifier to create a speaker with which the signals can be transmitted almost unadulterated.
- the device according to the invention shows in its simplest Embodiment an outgoing conductor for the outgoing line of the electrical signals and a return conductor for the return of the electrical signals on the form a cable harness.
- a forward and return conductor in the device according to the invention from a common Enclosed ferrite sheathing so that the Stray field residues due to the high magnetic coupling the conductor compensate. It has been in listening tests shown that the transmission properties of the device audibly improved by the magnetic coupling become. This manifests itself in an improved location and a warmer sound.
- the sheathing advantageously consists of a chain of ferrite cores that are on the wiring harness or are lined up on the cable harnesses. If that Cables can only have one cable harness, tube cores find use as sheathing. In a preferred one Embodiment with two cable strands are the Strands through the two openings of ferrite double-hole cores guided.
- a the tendency of the amplifier to vibrate suppressing attenuator on the speaker side End of the cable is provided.
- the Attenuator loads the series resonant circuit ohmic with increasing frequency, so the quality value is strong is lowered (Q ⁇ 1) and self-excitation no longer can be stimulated.
- Q ⁇ 1 Quality of the amplifier
- the attenuator on the load side Cable end can be used a cable that a low inductance and a high one Has capacitance without the amplifier under certain operating conditions could become unstable. Therefore, long cable lengths are too special lead high capacity in the invention Device harmless.
- the attenuator is preferably an R / C series link. It should be dimensioned so that it is for the critical frequency range of 1-5 MHz, in which the Amplifier due to the phase shift an oscillator-like Behavior can show like a low-resistance Load acts and the series resonant circuit stronger dampened. To increase security will be advantageous several R / C series links connected in parallel used with different corner frequencies.
- a tuner that consists of a Series inductance L and / or a series resistor R exists.
- the device for signal transmission from an amplifier to a speaker consists of a cable 1 with a sheath 2 made of magnetically conductive Material and a tuning member 3 on the amplifier side End of the cable and an attenuator 4 on speaker end of the cable.
- Fig. 1 shows the cable 1 with the connection housings 5,6, which the tuning member 3rd and absorb the attenuator 4. From the junction boxes 5.6 protrude short connection cables 7.8 with suitable Plugs 9,10 for connecting the amplifier or Speaker.
- the cable 1 has two wire harnesses 11, 11 ', each of which three leads 12, 12 'for the lead of the electrical Signals and three return lines 13, 13 'for the Return of the electrical signals exist.
- the forward and return conductors 12, 12 ', 13, 13' are made of strands ninety twisted enamelled copper wires each. Because the conductors consist of a large number of individual conductors the surface of the ladder is enlarged, which reduces the skin effect. At the same time compensate for those arising from each individual line Magnetic fields and thereby reduce the inductance.
- Fig. 3 shows a section through the double-hole ferrite cores 16 on the two cable runs 11, 11 ' are lined up and the casing 2 made of magnetic form conductive material.
- the ferrite cores 16 have a substantially rectangular profile on and are provided with two parallel recesses 15, 15 ', which the cable harnesses with the outgoing and return conductors take up.
- Fig. 5 shows the block diagram of the device for Signal transmission from an amplifier 17 to one Loudspeakers 22.
- the contacting of the forward and return conductors 12, 12 ', 13, 13' takes place with contacting elements 18.18 'in the amplifier and speaker side Junction boxes 5.6 are provided.
- the speaker-side connection housing 6 also contains the attenuator 4. This is necessary to ensure stable operation of the amplifier 17 with the low-inductance cable 1 of the device.
- the attenuator 4 consists of a parallel connection of two R / C series members 19, 19 ', which are each connected in parallel to the contacting elements 18, 18'.
- the resistors R 1 and R 2 have a resistance which is approximately between 3 and 8 ohms.
- the inductance of the capacitors C 1 and C 2 is greater than 0.1 ⁇ F.
- the attenuator 4 has the task of ohmic load the cable 1 at high frequencies in the order of 1-5 MHz and thus to prevent series resonance due to the inductive effect of the amplifier due to the cable capacitance.
- the amplifier-side connection housing 5 contains the tuning element 3.
- the tuning element 3 consists of a series inductance lying between the amplifier output and the forward line of the cable 1. This is formed by the series connection of the two coils L 1 and L 2 from a few wire turns with an inductance of approximately 0.1-1 ⁇ H. With a wire bridge 20, which is provided with plug-in elements, the level of the series inductance can be adapted to the amplifier 17. The coils can also be short-circuited.
- the tuning member 5 also has a series resistance. This is formed by the series connection of the two resistors R 3 and R 4 , which can also be bridged individually with the wire bridge 21. This allows you to change the character of the sound and to adjust the cable for different cable lengths of the left and right channels.
- the device only a speaker-side attenuator on.
- the cable can shorter lengths but also without a tuning link and Attenuator are operated.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Communication Cables (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Amplifiers (AREA)
Description
- Fig. 1
- die aus einem Kabel sowie einem Abstimmglied am verstärkerseitigen Kabelende und einem Dämpfungsglied am lautsprecherseitigen Kabelende bestehende Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher,
- Fig. 2
- die auf das Kabel aufgereihten Doppellochkerne der Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher,
- Fig. 3
- einen Schnitt entlang der Linie III-III von Fig. 2,
- Fig. 4
- den Aufbau des aus zwei parallelgeschalteten Kabelsträngen bestehenden Kabels, und
- Fig. 5
- das Blockschaltbild der Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher.
Claims (9)
- Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher, mit mindestens einem Kabelstrang (11,11') bestehend aus
mehreren Hinleitern (12,12') für die Hinleitung der elektrischen Signale und mehreren Rückleitern (13,13') für die Rückleitung der elektrischen Signale, wobei die Hinleiter (12,12') an ihren Enden elektrisch miteinander verbunden sind und die Rückleiter (13,13') an ihren Enden elektrisch miteinander verbunden sind,
dadurch gekennzeichnet,
daß die Hinleiter (12,12') und die Rückleiter (13,13') von einer gemeinsamen Ferrit-Ummantelung (2) umschlossen sind. - Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Ummantelung (2) aus einer Kette von Ferritkernen (16) besteht, die auf dem Kabelstrang (11) bzw. den Kabelsträngen (11,11') aufgereiht sind.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß zwei an ihren Enden parallelgeschaltete Kabelstränge (11,11') vorgesehen sind, und daß die Kerne Doppellochkerne (16) sind.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Hinleiter (12,12') und Rückleiter (13,13') jedes Kabelstrangs (11,11') miteinander verseilt sind.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jeder Leiter (12,12',13,13') aus einer Vielzahl von isolierten Einzeldrähten besteht.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Einzeldrähte lackisolierte Kupferdrähte sind.
- Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß an dem lautsprecherseitigen Kabelende ein die Schwingungsneigung des Verstärkers unterdrückendes Dämpfungsglied (4) vorgesehen ist.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das Dämpfungsglied (4) ein R/C-Serienglied (19) oder eine Parallelschaltung aus mehreren R/C-Seriengliedern (19,19') ist.
- Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß an dem verstärkerseitigen oder lautsprecherseitigen Kabelende ein Abstimmglied (3) vorgesehen ist, das eine Serieninduktivität (L) und/oder einen Serienwiderstand (R) aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4412749 | 1994-04-15 | ||
DE4412749A DE4412749A1 (de) | 1994-04-15 | 1994-04-15 | Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0677978A2 EP0677978A2 (de) | 1995-10-18 |
EP0677978A3 EP0677978A3 (de) | 1996-02-07 |
EP0677978B1 true EP0677978B1 (de) | 2000-07-26 |
Family
ID=6515308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95105163A Expired - Lifetime EP0677978B1 (de) | 1994-04-15 | 1995-04-06 | Vorrichtung zur Signalübertragung von einem Verstärker auf einen Lautsprecher |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0677978B1 (de) |
AT (1) | ATE195051T1 (de) |
DE (2) | DE4412749A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19600308A1 (de) | 1996-01-05 | 1997-07-10 | Siemens Matsushita Components | Induktives Bauelement zur Bedämpfung von Gleich- und Gegentaktstörungen |
DE20204259U1 (de) * | 2002-03-16 | 2002-07-04 | Seiffert, Jörg, 45131 Essen | Schaltung zur akustischen Gruppenlaufzeit und damit des frequenzabhängigen Phasenverhaltens von Lautsprecherchassis und Lautsprecherboxen |
DE102005062714B4 (de) | 2005-12-28 | 2021-12-09 | Aqipa GmbH | Kabel mit zwei Leitersystemen für Leistungsanwendungen |
CN101523514B (zh) | 2006-10-02 | 2012-01-11 | 冲电线株式会社 | 带高频漏电流返回线的马达驱动电缆、带低电感返回线的无屏蔽电缆及使用了该电缆的马达驱动控制系统 |
DE102009046201A1 (de) | 2009-10-30 | 2011-05-05 | Robert Bosch Gmbh | Dämpfungsglied zur Unterdrückung von Gleichtaktströmen |
DE102015112722B4 (de) * | 2015-08-03 | 2021-07-08 | Lisa Dräxlmaier GmbH | Vorrichtung und Verfahren zur Herstellung eines Kabelbaumes |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1159527C2 (de) * | 1958-03-28 | 1974-05-30 | Gustav Guanella Dipl Ing | Einrichtung zur Unterdrueckung gleichsinnig fliessender Stroeme in einer Doppelleiteranordnung |
GB1523720A (en) * | 1975-12-02 | 1978-09-06 | Secr Defence | Suppression of induced currents in cables |
JPS5530131A (en) * | 1978-08-25 | 1980-03-03 | Shin Endou | Speaker cord |
DE3123040A1 (de) * | 1981-06-11 | 1983-01-05 | Vacuumschmelze Gmbh, 6450 Hanau | Magnetisch abgeschirmtes kabel mit einer abschirmungaus weichmagnetischem material |
IT208614Z2 (it) * | 1986-03-10 | 1988-05-28 | Cavis Cavetti Isolati Spa | Struttura di cavo elettrico con schermatura antidisturbo. |
US4754102A (en) * | 1987-06-02 | 1988-06-28 | Dzurak Thomas J | Directional interconnection cable for high fidelity signal transmission |
JPH0543510Y2 (de) * | 1988-09-29 | 1993-11-02 | ||
US5122924A (en) * | 1988-12-05 | 1992-06-16 | Murata Manufacturing Co., Ltd. | Electronic component having a plurality of current path pairs |
DE4334961A1 (de) * | 1993-10-13 | 1995-04-20 | Hans M Strassner | Kabel für die Signalübertragung von einem Verstärker auf einen Lautsprecher |
-
1994
- 1994-04-15 DE DE4412749A patent/DE4412749A1/de not_active Withdrawn
-
1995
- 1995-04-06 DE DE59508595T patent/DE59508595D1/de not_active Expired - Fee Related
- 1995-04-06 AT AT95105163T patent/ATE195051T1/de not_active IP Right Cessation
- 1995-04-06 EP EP95105163A patent/EP0677978B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0677978A2 (de) | 1995-10-18 |
DE4412749A1 (de) | 1995-10-26 |
EP0677978A3 (de) | 1996-02-07 |
DE59508595D1 (de) | 2000-08-31 |
ATE195051T1 (de) | 2000-08-15 |
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