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| − | == Short description == | + | == Kurzbeschreibung == |
| − | At the moment I just want to deposit some information, not describe everything.
| + | Ich will im Moment nur ein paar Informationen hinterlegen, nicht alles beschreiben. |
| − | It is about the ALTO III c , with the newest database values for the chassis and
| + | Es geht um die ALTO III c , mit den neusten Datenbank Werten für die Chassis und |
| − | the newest version of the Visaton crossover.
| + | der neusten Version von der Visaton Weiche. |
| | | | |
| − | == Data == | + | == Daten == |
| − | '''General''' | + | '''Allgemein''' |
| − | * Manufacturer:[[manufacturer name]] | + | * Hersteller:[[Herstellername]] |
| − | * Model: | + | * Modell: |
| − | * Year of manufacture: | + | * Baujahre: |
| − | * Manufactured in: | + | * Hergestellt in: |
| − | * Color: | + | * Farbe: |
| − | * Dimensions (W/H/D): | + | * Abmessungen (B/H/T): |
| − | * Weight: X kg | + | * Gewicht: X kg |
| − | * New price approx: | + | * Neupreis ca.: |
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| | | | |
| − | '''Connections''' | + | '''Anschlüsse''' |
| − | * list the connection options here, if known. | + | * hier die Anschlussmöglichkeiten aufführen, falls bekannt. |
| | | | |
| − | '''Technical data''' | + | '''Technische Daten''' |
| − | List the technical data here, if known.
| + | * hier die Technischen Daten aufführen, falls bekannt. |
| | | | |
| − | '''Special equipment''' | + | '''Besondere Ausstattungen''' |
| − | * here, if available | + | * hier, wenn vorhanden |
| | | | |
| − | == Crossover modification/improvements == | + | == Frequenzweiche Umbau/Verbesserungen == |
| − | === Original crossover === | + | === Original Frequenzweiche === |
| − | * phase response between medium and good | + | * Phasenverlauf zwischen mittel und gut |
| | | | |
| | <gallery> | | <gallery> |
| − | File:Visaton Alto III c 001.jpg|Original crossover (version 01/29/2014)
| + | Datei:Visaton Alto III c 001.jpg|Frequenzweiche Original (Version 29.01.2014) |
| − | File:Visaton Alto III c 002.jpg
| + | Datei:Visaton Alto III c 002.jpg |
| − | file:Visaton Alto III c 003.jpg
| + | Datei:Visaton Alto III c 003.jpg |
| − | file:Visaton Alto III c 004.jpg
| + | Datei:Visaton Alto III c 004.jpg |
| − | file:Visaton Alto III c 005.jpg
| + | Datei:Visaton Alto III c 005.jpg |
| − | file:Visaton Alto III c 006.jpg
| + | Datei:Visaton Alto III c 006.jpg |
| − | file:Visaton Alto III c 007.jpg
| + | Datei:Visaton Alto III c 007.jpg |
| | </gallery> | | </gallery> |
| | | | |
| − | === Height adjustment === | + | === Höhenanpassung === |
| − | * For those it is too brilliant, this adjustment exists. | + | * Für diejenigen es zu Brillant ist, besteht diese Anpassung. |
| − | * I tried with suction circle, but did not come up with a conclusive solution. | + | * Ich habe es mit Saugkreis versucht, aber kam auf keine schlüssige Lösung. |
| − | * Therefore this solution in the path. | + | * Darum diese Lösung im Pfad. |
| − | * It's best to put the switches in the back. | + | ** Phasenverlauf wird leicht verschlechtert wenn alte Schalter offen. |
| − | Phase response is slightly degraded when old switches are open. | + | ** Jeder eingeschaltete Schalter bewirkt eine Verbesserung der Phase wieder bis zum Original von Visaton. |
| − | Each switched on switch causes an improvement of the phase again up to the original of Visaton.
| + | ** Amplitudenverlauf Erhöhung möglich in 2 halben Schritten von flach bis auf Original von Visaton. |
| − | Amplitude increase possible in 2 half steps from flat to original Visaton.
| + | ** Wenn Schalter S2 geschlossen, ist sie wieder Original Visaton, alle Werte vom vorhergehend Abschnitt gelten wieder. |
| − | When switch S2 is closed, it is again original Visaton, all values from the previous section apply again.
| + | ** Umbaukosten: ca. 10,- Euro/Box |
| − | Conversion costs: approx. 10,- Euro/box
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| | | | |
| − | '''Note:'''
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| − | * I would mechanically split the wire strands between 3.3 uF and 0.33 mH.
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| − | * And there with wire strands the new parts (S2, 0.15mH, 4.7Ohm, S1, 4.7Ohm) according to the scheme.
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| − | If necessary, glue the parts to the switch with construction glue. Basta.
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| − | But don't glue the coils to each other, they have to be as far apart as possible.
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| − |
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| − |
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| − | <gallery>
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| − | File:Alto III c HA1 2.jpg|Crossover with treble adjustments
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| − | File:Alto III c HA1 002.jpg|All switches open
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| − | File:Alto III c HA1 003.jpg|S1 closed
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| − | File:Alto III c HA1 004.jpg|S2 closed, S1 position doesn't matter
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| − | File:Alto III c HA1 005.jpg|All switches open, phase sequence
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| − | </gallery>
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| − |
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| − | == Operation on amplifiers with only 6 Ohm output ==
| |
| − | This question came up. One suggestion was to add a resistor upstream on the speaker. If then 2.2Ohm, so that we come over (6Ohm *80%) 4.8Ohm.
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| − | * I don't think this solution is very good.
| |
| | <gallery> | | <gallery> |
| − | File:Alto III c 6Ohm 1.jpg|2.2Ohm in the speaker cable
| + | Datei:Alto III c HA1 2.jpg|Frequenzweiche mit Höhenanpassungen |
| − | File:Alto III c 6Ohm 2.jpg|The changed frequency response
| + | Datei:Alto III c HA1 002.jpg|Alle Schalter offen |
| | + | Datei:Alto III c HA1 003.jpg|S1 geschlossen |
| | + | Datei:Alto III c HA1 004.jpg|S2 geschlossen, S1 Stellung egal |
| | + | Datei:Alto III c HA1 005.jpg|Alle Schalter offen, Phasenverlauf |
| | </gallery> | | </gallery> |
| | | | |
| − | My tip '''Pay attention''':
| + | == Bemerkungen == |
| − | | + | Weitere Modelle der gleichen Serie: |
| − | These 6Ohm amplifiers are also amplifiers, they also deliver more current with lower impedance loads speak speakers. But these amplifiers heat up faster at 4Ohm, because they are mostly ready-made components that are really designed for a certain current consumption.
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| − | | |
| − | Example:
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| − | | |
| − | Amplifier 100W/6Ohm nominal data:
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| − | Voltage output amplifier when 100Watt at 6Ohm = root(100Watt x 6Ohm)= 24.495 Volt
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| − | Current i=u/r = 24.495 Volt / 6Ohm = 4.082 Ampere
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| − | | |
| − | Now with a different speaker:
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| − | The voltage remains the same with the volume control in the same position:
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| − | Current I=U/R = 24.495 Volt / 4Ohm = 6.124 Ampere
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| − | Changed power output: P=U x I = 24.495Volt x 6.124 Ampere = 150 Watt
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| − | | |
| − | Heating in the amplifier: Most are class AB amplifiers (Rod Elliot amplifiers) with efficiency n=0.7. So
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| − | 70% comes on the line, 30% is burned in the amplifier.
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| − | | |
| − | Before with 6Ohm loudspeaker there were 30Watt in the final amplifier.
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| − | Now with 4Ohm speakers there are 45Watt in the final amplifier.
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| − | That is a heat increase of +50%.
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| − | | |
| − | And what can you do?
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| − | Believe me, these amplifiers are already built to the limit. Observation is probably the easiest thing to do. The best thing to do is to put a thermometer on the cooling fins of the amp. I never touch the fins like that. 40°C as a limit? Because the core temperature of the finished components is much higher.
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| − | I don't know a table of values. The best thing to do is to connect the 6Ohm speakers again, full load for 10 minutes and measure the temperature.
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| − | | |
| − | Then do the same with the new ones and slowly increase the load until the same temperature is reached.
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| − | | |
| − | Finally you will have the same 100 watt output amp. And a mark on the volume control, my new maximum position.
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| − | | |
| − | That's all I can think of. But I think you can live with it, if you take it to heart.
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| − | | |
| − | == Remarks == | |
| − | More models of the same series:
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| | | | |
| − | == Pictures == | + | == Bilder == |
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| − | == Test reports == | + | == Testberichte == |
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| | == Links == | | == Links == |
| | | | |
| − | [[Category:Sample Category 1]] | + | [[Kategorie:Beispielkategorie 1]] |
| − | [[Category:Draft]] | + | [[Kategorie:Entwurf]] |
| | __NOTOC__ | | __NOTOC__ |