CH-9 “SALIERI” Cutterhead for sale

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farmersplow
Posts: 645
Joined: Thu Jun 17, 2021 3:43 am
Location: Austria - Vienna

CH-9 “SALIERI” Cutterhead for sale

Post: # 66278Unread post farmersplow
Wed Nov 27, 2024 4:51 pm

I have two CH-9 SALIERI stereo feedback cutterheads for sale.
Protected in transportation box with stylus lever tool, spare fuses and manual with operating instruction (30 pages in English, German or Spanish).

Please send me a PM if you are interested.
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CH-9 SALIERI.jpg
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SPECIFICATIONS:
Moving coil feedback stereo cutterhead
1:20 (Neuman SX) cutting stylus mount
VCA: 20° (vertical cutting angle)
Rake angle (Stylus): 2°
1st Main Resonance at 1250Hz (+/- 5%)
2nd Resonance at 9500Hz (+/- 5%)
Driver coils: 2x 20 Watt / 4 Ohm
Recommended fuse: 0.5A fast blow. (check for low fuse resistance. <=0.2 ohm)
Feedback coils: 2x 9 Ohm
Drive /FB magnets: NdFeB
Stylus heating terminal (max. 500mA)
LED stylus lighting (12V=)

CONNECTOR:
2-row 15-pin socket (D-SUB DB15 female)

DIMENSIONS:
Width: 117mm
Height: 61mm
Depth: 66mm (96mm incl. Adapter)
Weight: 930 Gramm
Cylindrical adapter 18mm
Height from center line of the connection cylinder to stylus tip: 46mm
Distance from rear contact surface to stylus tip: 31.5mm
Body material: Grey anodized aluminium


Greetings from Austria
Thomas
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andybee
Posts: 726
Joined: Mon Aug 14, 2006 2:12 pm
Location: Germany
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Re: CH-9 “SALIERI” Cutterhead for sale

Post: # 66325Unread post andybee
Mon Dec 02, 2024 5:36 am

interesting, how the feedback is processed? is there a special
preamp/amp needed? how does it sound?
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farmersplow
Posts: 645
Joined: Thu Jun 17, 2021 3:43 am
Location: Austria - Vienna

Re: CH-9 “SALIERI” Cutterhead for sale

Post: # 66330Unread post farmersplow
Mon Dec 02, 2024 9:54 am

andybee wrote: ↑
Mon Dec 02, 2024 5:36 am
 interesting, how the feedback is processed? is there a special
preamp/amp needed? how does it sound?
Hello Andy

I have nothing to hide, so in my thread “The farmer and his plow - When I set out to build a record cutter” I have provided all the details about the cutter head and the feedback amplifier.

A feedback amplifier is needed so that you can use a feedback head with this advantage. I developed and built my PCB based on Flokason-Caruso-Board. I have shown the function, the circuit diagram and the setting procedure here:
How it works: Feedback Compensation Amplifier
https://www.lathetrolls.com/viewtopic.php?f=15&t=9578&start=269

I have also built and offered an external FBCA amplifier:
FBCA-Feedback Compensation Amplifier
https://www.lathetrolls.com/viewtopic.php?f=15&t=9578&start=344

And I have also presented sound examples:
https://www.lathetrolls.com/viewtopic.php?f=15&t=9578&start=334

I hope this answers your questions. I am at your disposal for any other questions.
Thomas
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