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Point to point wiring
Point to point wiring
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Old 21st November 2020, 04:40 PM   #21
painted is offline painted  Luxembourg
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Pfft, pico Farad strays and nano Farad cap values.
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Old 21st November 2020, 05:00 PM   #22
tgreese is offline tgreese  United States
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Regarding the H-K chassis in the first post, it's not that complicated if you don't let it be overwhelming. Circuit by circuit, it's straightforward. The original mfr cannot spend the time and expense on aesthetics that no one will see.

How do you eat an elephant?
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Old 21st November 2020, 05:59 PM   #23
JoeAlders is offline JoeAlders  Netherlands
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"Regarding the H-K chassis in the first post, it's not that complicated if you don't let it be overwhelming. Circuit by circuit, it's straightforward. The original mfr cannot spend the time and expense on aesthetics that no one will see."

Except for the repair engineer ..

But you are right I think. The average consumer would never take a look inside the chassis.
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Old 21st November 2020, 07:14 PM   #24
Schmitz77 is offline Schmitz77
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There are many reasons for the pro's companies of those tube stone ages to establish a more structured, more repair friendly style. Time is money for the pro's. Best is to have gear or cards that are easily changeable in case of an emergency. Amps in magazines for example.
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Old 21st November 2020, 07:46 PM   #25
JoeAlders is offline JoeAlders  Netherlands
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Quote:
Originally Posted by Schmitz77 View Post
There are many reasons for the pro's companies of those tube stone ages to establish a more structured, more repair friendly style. Time is money for the pro's. Best is to have gear or cards that are easily changeable in case of an emergency. Amps in magazines for example.

This picture is interesting. What is this for amplifier(?) ?


And ... "those tube stone ages" ? Absolutely not ! Alive and kicking!!

Last edited by JoeAlders; 21st November 2020 at 07:52 PM.
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Old 22nd November 2020, 12:30 AM   #26
tomchr is offline tomchr  Canada
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One wonders what kind of failure rates they were seeing on those mass-produced point-to-point wired consoles and amps. At least I find it hard to believe that all units produced worked straight off the assembly line.

Tom
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Old 22nd November 2020, 05:08 AM   #27
AmadeusMozart is offline AmadeusMozart  New Zealand
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Point to point I made over 10 years ago. 6L6GC SE, tube rectifier, OA2 voltage regulation, ECC81 driver.
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Old 22nd November 2020, 05:11 AM   #28
6A3sUMMER is offline 6A3sUMMER  United States
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AmadeusMozart,

Great layout, great planning, and lovely wiring!

What were the output tube types?

I hope you are still using that as one of your most listened to amplifiers.

I only put 1 handle on my amplifiers; your 2 handles are more symmetrical.
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Old 22nd November 2020, 05:14 AM   #29
AmadeusMozart is offline AmadeusMozart  New Zealand
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Quote:
Originally Posted by tomchr View Post
One wonders what kind of failure rates they were seeing on those mass-produced point-to-point wired consoles and amps. At least I find it hard to believe that all units produced worked straight off the assembly line.

Tom

Very low failure rate - on average I managed less than 3 cosmetic faults on 19K solder points while working for Philips putting telephone exchanges together.

Components were tested before use.
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Old 22nd November 2020, 06:38 AM   #30
dotneck335 is offline dotneck335  United States
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Quote:
Originally Posted by JoeAlders View Post
The average consumer would never take a look inside the chassis.
And that's why we build our own!
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