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Old 22nd October 2004, 11:00 PM   #351
845 is offline 845  Israel
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And this is rigth channel.
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Old 22nd October 2004, 11:08 PM   #352
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This is my KT88 project
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Old 22nd October 2004, 11:09 PM   #353
845 is offline 845  Israel
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And this is another one.
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Old 23rd October 2004, 08:49 AM   #354
845 is offline 845  Israel
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My 845 inside.
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Old 23rd October 2004, 11:26 AM   #355
845 is offline 845  Israel
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One of my preamps.
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Old 24th October 2004, 07:20 PM   #356
845 is offline 845  Israel
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Another preamp (with hadphone output)
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Old 25th October 2004, 04:39 PM   #357
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845,

Nice work! I can see lots of effort in it!

Care to comment on the design, sound, etc?
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Old 25th October 2004, 05:13 PM   #358
845 is offline 845  Israel
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Default My 845.

For each monoblock:
Input transformer-Tamura STU-001 300,150 Ohm to 100 kOhm
with CT are connected to Class A Push-Pull driver (two El34 in triode mode). The driver stage are connected to NC-22 Tango
P-P interstage transformer which pushes the 845 P-P Class A
fix bias output stage. Output transformer is Tamura F-2021.
Power supply:
Power trans 1-Tamura STU-3012 (230V primary)
Power trans 2-Old Chikago transformers.
Tube rectifieeng- 2*5AR4 and 5U4(for driver stage)
Filtering-2* Tamura A-4004 chokes and oil capacitors for HT section and one A-4004 choke with oil caps for driver section.

The amplifier is developed by me without feedback.
The project proceeded one and a half year .

I am sorry for my English.
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Old 25th October 2004, 06:06 PM   #359
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Default Re: My 845.

Quote:
Originally posted by 845
I am sorry for my English.
Your English is at least as good as some of the English speaking members... and WAY better than my Hebrew

dave
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Old 29th October 2004, 11:23 AM   #360
krishu is offline krishu  Europe
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Hi,

this is a tube pre amplifier based on a kit from Steinmusic from 1993 ... including phono stage. The upper cabinet is the pre itself, the one below contains the p/s. More info on my site

The cabinet is 5mm Aluminium coated with "stainless steel effect" laquer; the front graphics is printed on ordinary ink-jet paper behind 5mm clear PMMA. Knobs are cheap aluminium ones ($3 each)

Click the image to open in full size.

Cheers
Christian.
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