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Omtec Antares CP1-i/CP-1i - Testreview in English and Schematic wanted
Omtec Antares CP1-i/CP-1i - Testreview in English and Schematic wanted
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Old 22nd April 2014, 12:54 PM   #1
tiefbassuebertr is offline tiefbassuebertr  Germany
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Default Omtec Antares CP1-i/CP-1i - Testreview in English and Schematic wanted

Who can upload this?
There are only to find a review in German language:
HRERLEBNIS - Die Zeitschrift fr Musik und High Fidelity
but not in other languages, particularly in English.
Thank you.

Omtec's describtion on their old website concerning their very special features (in case of the cartridge load) is follow (only in German):

Der Kurzschlußbetrieb (shorting mode resp.Voltage ShortCut - abbreviation "VSC")
wurde von omtec entwickelt und erstmals in unserer Phonovorstufe
eingesetzt. Dabei wird das TA-System nicht mehr mit einem Widerstand als
Lastimpedanz betrieben. Beim Kurzschlußbetrieb (engl. Voltage ShortCut
VSC) ist der Eingangswiderstand des CP-1i antares (nahezu) Null Ohm, was
praktisch bedeutet, daß das Tonabnehmersystem auf einen Kurzschluß
arbeitet. An der TA-Spule baut sich kaum noch eine nennenswerte
Ausgangsspannung auf. Stattdessen wird der im System durch die
Nadelbewegung generierte Strom maximal groß. Eben dieser Generator-Strom
wird dann in der Phonovorstufe verstärkt.
Ein Vorteil dieser Methode besteht im sofortigen und vollständigen
Abfluß der bewegten Elektronen. Weder in der Spule (mit ihrer
Induktivität) noch in den Kapazitäten der Verbindungskabel wird jetzt
nennenswert Energie gespeichert.
Besondere Bedeutung erlangt der sogenannte Kurzschlußbetrieb für den
Tonabnehmer noch aus einer anderen Richtung: Eigentlich alle Systeme
besitzen entweder im Hörbereich oder darüber eine Resonanz, die sich auf
den Frequenzgang auswirkt. Manche Tonabnehmer erhalten hierdurch eine
unnatürlich kantige Hochtonwiedergabe, die der Laie dann gern als
‘analytisches Klangbild’ bezeichnet. Wie auch immer. Mechanisch bedingte
Resonanzen der Tonabnehmer werden im Kurzschlußbetrieb auf elektrischem
Wege durch das System selbst gedämpft. Wir kennen den Vorgang beim
Lautsprecher, bei dem die Membranbewegung durch den Ausgangswiderstand
des Verstärkers bedämpft wird.
Attached Files
File Type: pdf Omtec Antares CP1i.pdf (114.3 KB, 146 views)

Last edited by tiefbassuebertr; 22nd April 2014 at 01:18 PM.
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Old 17th August 2017, 07:56 AM   #2
tiefbassuebertr is offline tiefbassuebertr  Germany
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any news?
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Old 21st August 2017, 08:26 PM   #3
tiefbassuebertr is offline tiefbassuebertr  Germany
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some URLs:
Omtec Antares Version 1 bis 4 Infos - Phonovorstufen und Ubertrager - Analogue Audio Association
Betriebsart Omtec Antares - Phono - allgemein - Analogue Audio Association
Omtec Antares Bedienungsanleitung - Phono - allgemein - Analogue Audio Association
Omtec Antares CP1i V4 - Phono - allgemein - Analogue Audio Association

and an image from German magazine "STEREO" - top view of PC-board:
Attached Images
File Type: jpg OMTEC Antares RIAA-VV PCB.jpg (190.3 KB, 232 views)
File Type: jpg 112673-e7479d7d.JPG (89.8 KB, 227 views)

Last edited by tiefbassuebertr; 21st August 2017 at 08:38 PM.
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Old 21st August 2017, 09:05 PM   #4
tiefbassuebertr is offline tiefbassuebertr  Germany
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various versions
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Old 21st August 2017, 09:11 PM   #5
tiefbassuebertr is offline tiefbassuebertr  Germany
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last version and description of versions between 1989 to Juni 1999
Attached Images
File Type: jpg OMTEC Antares V4 silver ab 2008 front view.jpg (435.7 KB, 24 views)
File Type: jpg OMTEC Antares V4 silver ab 2008 back view.jpg (589.1 KB, 21 views)
Attached Files
File Type: pdf omtec antares.pdf (483.6 KB, 62 views)
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Old 22nd August 2017, 01:30 AM   #6
PRR is offline PRR  United States
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> Testreview in English

Are you asking for English of the German review?? (Since you seem to be German, that didn't seem likely.)

Google Translate's mostly-readable translation of the review.

The review and your pictures suggest it is full of glue, as if they did not want anybody to see inside.
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Old 28th August 2017, 12:00 PM   #7
tiefbassuebertr is offline tiefbassuebertr  Germany
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Quote:
Originally Posted by PRR View Post
> Testreview in English

Are you asking for English of the German review?? (Since you seem to be German, that didn't seem likely.)

Google Translate's mostly-readable translation of the review.

The review and your pictures suggest it is full of glue, as if they did not want anybody to see inside.
I am don't looking for a german test review with translate to the english language. I am looking for a test review from an american, australian or british test magazine
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Old 7th September 2017, 11:35 AM   #8
tiefbassuebertr is offline tiefbassuebertr  Germany
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Default Balanced Mode at Input with different input impedance

Schematic (from serial-No 54507) and instruction manual here:
Actually it is a discrete version of an AD846 - go to page 8 under
http://www.analog.com/media/en/techn...70284AD846.pdf

There are three different input modes possible for moving coil cartridges:

1) unbalanced mode with high impedance input (non inverted input)
2) unbalanced with low impedance input (inverted input)
3) balanced mode with different input impedance on each half

The main question for me is, how is to connect the input resistor in the balanced mode ?
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