Editing Ferrograph Logic 7

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__NOTOC__
 
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== Data ==
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== Daten ==
{{navigation}}
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{{Navigation}}
'''General'''
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'''Allgemein'''
* Manufacturer: Ferrograph
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* Hersteller: Ferrograph
* Model: Logic 7
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* Modell: Logic 7 (Dolby)
* Years of manufacture: 1976 -
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* Baujahre: ca. 1970
* Made in: England
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* Hergestellt in: England
* Color lower part: dark brown (lighter than RAL 7013)
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* Farbe: dunkelbraun, hellbeige, dunkelbeige
* Colour middle part: light beige (lighter than RAL 9002)
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* Fernbedienung: Kabel-Logic, optional
* Colour top: dark beige (darker than RAL 1019)
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* Leistungsaufnahme: 100 Watt
* Remote control: Cable-Logic, optional
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* Abmessungen: 51,5cm breit x 44,5cm hoch x 25,5 cm tief
* Power consumption: 100 Watt
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* Gewicht: 26 kg
* Dimensions: 51,5cm wide x 44,5cm high x 25,5 cm deep
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* Neupreis ca.: 3.600 DM
* Weight: 26 kg
 
* Original price approx.: 3.600 DM
 
  
  
'''Connections'''
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'''Anschlüsse'''
* Number of outputs: 4 stereo
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* Anzahl der Ausgänge: 4 Stereo
** Line, 600 Ohm, Speaker, Headphone (8-600 Ohm)
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** Line, 600 Ohm, Speaker, Kopfhörer (8-600 Ohm)
* Number of inputs: 2 stereo
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* Anzahl der Eingänge: 2 Stereo
 
** Line, Mic
 
** Line, Mic
  
  
'''Technical Data'''
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'''Technische Daten'''
* max. coil diameter: 26,5 cm
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* max. Spulendurchmesser: 26 cm
* drive: 3 motors, (2 winders, 1 capstan)
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* Antrieb: 3 Motoren, (2 Wickler, 1 Capstan)
* heads: 3
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* Köpfe: 3
* tracks: 2  
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* Spuren: 2  
* tape speeds: 9.5, 19, 38
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* Bandgeschwindigkeiten: 9.5, 19, 38
* Pitch variations: 0.08% at 38cm/s, 0.1% at 19cm/s, 0.17% at 9.5cm/s
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* Tonhöhenschwankungen: 0.08% bei 38cm/s, 0.1% bei 19cm/s, 0.17% bei 9.5cm/s
* Synchronization fluctuations: less than 1%
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* Gleichlaufschwankungen: kleiner 1%
* Overall frequency response: 30-20KHz at 38cm/s, 30-17KHz at 19cm/s, 40-14KHz at 9.5cm/s  
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* Gesamtfrequenzgang: 30-20KHz bei 38cm/s, 30-17KHz bei 19cm/s, 40-14KHz bei 9.5cm/s  
* Signal to noise ratio: better than 60dB
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* Signalrauschabstand: besser 60dB
* Signal-to-noise ratio: -
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* Fremdspannungsabstand: -
* Distortion factor: less than 0.25%  
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* Klirrfaktor: kleiner 0,25%  
* Equalization: -
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* Entzerrung: -
* Crosstalk attenuation: Stereo 50dB; Mono 65db at 1000Hz
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* Übersprechdämpfung: Stereo 50dB; Mono 65db bei 1000Hz
* Cancellation attenuation: -  
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* Löschdämpfung: -  
* Premagnetization and extinction frequency: -
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* Vormagnetisierungs- und Löschfrequenz: -
  
  
'''Special Features'''
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'''Besondere Ausstattungen'''
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* Dolby, MPX
  
* Toggle switch horizontal/vertical operation
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== Bemerkungen ==
* Tape tension switch for use with reels up to 26.5cm.  
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Englische Handarbeit aus den 70iger Jahren.  
* 10 watt control amplifier with pre-backband control.
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Diese Version ist ohne Dolby (R) ausgeführt.
* Transfer switch for re-copying
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Alle tragenden Bauteile bestehen aus massiven Aluminium, aber trotzdem ist auch diese Logic 7, wie alle Ferrographen, mit 26Kg sehr schwer.
* Bias adjustment and display before and during recording
 
* Duoplay, multiplay and echo without additional equipment.
 
* Mixing of mic and audio signals.
 
  
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Die Logic 7 bietet vier Geschwindigkeiten, wobei immer drei direkt anwählbar sind (7.5, 19 und 38). Ferrograph Logic 7 ist als 3-Kopf Maschine ausgeführt, wobei die Aufnahme grundsätzlich durch die an der Frontplatte montierten Justage-Regler auf das "Original" eingepegelt werden kann. Diese Maschine ist eine Halbspurmaschine, wobei es auch eine Vierspur-Ausführung geben soll.
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Alle Eingänge, sowie alle Ausgänge sind als 6,3 mm Klinke ausgeführt, die unbeschaltet über interne Kontakte auf Masse liegen und somit der Begriff "offene Ein- bzw. Ausgänge" bei Ferrograph nicht anzutreffen ist, aber leider bei modenen Cinch-Verbindungen unvermeidlich ist.
  
== Remarks ==
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==Bilder==
English handmade from the 70s.  
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[[Bild:Ferrograph_Logic_7_a1.jpg|700px]]
This version is made without Dolby (R).
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[[Bild:logic7-dolby2.jpg|700px]]
All supporting components are made of solid aluminium, but nevertheless this Logic 7 is, like all Ferrographs, very heavy with 26Kg.
 
  
The Logic 7 offers four speeds, whereby three are always directly selectable (7.5, 19 and 38). Ferrograph Logic 7 is designed as a 3-head machine, where the recording can basically be levelled to the "original" by the front panel mounted adjustment knobs. This machine is a half-track machine, although a four-track version is also said to be available.
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== Berichte ==
All inputs, as well as all outputs are designed as 6.3 mm jacks, which are connected to ground via internal contacts without being switched. Thus, the term "open inputs or outputs" is not encountered at Ferrograph, but is unfortunately unavoidable with fashionable RCA connections.
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Der Eisenschreiber
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[http://netzschwimmer.de/temp/audioclassica-test/static-page/index.php?content=musik/interest_deu_musik_02]
  
  
== Rubber parts ==
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[[Kategorie:Bandmaschinen]]
Due to age, the rubber parts of these machines decompose. Especially the capstan roller and 3 pressure rollers.
 
Since there is up-to-date again the possibility to vulcanize these on the original cores again, this is also with
 
this machine as well.
 
For example '''DAVE DURRANT''' (david.durrant@btinternet.com) from England offers a convincing service with very good results. To have all
 
four wheels at Dave, this service costs about 70 EURO incl. shipping.
 
 
 
 
 
==Pictures==
 
[[Image:Ferrograph_Logic_7_a1.jpg|700px]]
 
 
 
== Reports ==
 
The Ferrograph
 
[[http://netzschwimmer.de/temp/audioclassica-test/static-page/index.php?content=musik/interest_deu_musik_02]]
 
 
 
 
 
 
 
 
 
[[Category:Tape Machines]]
 

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