Point to point wiring - Page 3

painted · 21st November 2020, 04:40 PM

Pfft, pico Farad strays and nano Farad cap values.

tgreese · 21st November 2020, 05:00 PM

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?

JoeAlders · 21st November 2020, 05:59 PM

"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.

Schmitz77 · 21st November 2020, 07:14 PM

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.

JoeAlders · 07:52 PM

Quote:

Originally Posted by Schmitz77

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!!

tomchr · 22nd November 2020, 12:30 AM

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

AmadeusMozart · 22nd November 2020, 05:08 AM

Point to point I made over 10 years ago. 6L6GC SE, tube rectifier, OA2 voltage regulation, ECC81 driver.

6A3sUMMER · 22nd November 2020, 05:11 AM

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.

AmadeusMozart · 22nd November 2020, 05:14 AM

Quote:

Originally Posted by tomchr

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.

dotneck335 · 22nd November 2020, 06:38 AM

Quote:

Originally Posted by JoeAlders

The average consumer would never take a look inside the chassis.

And that's why we build our own!

22nd November 2020, 12:30 AM	#26
tomchr diyAudio Member Join Date: Feb 2009 Location: Calgary	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 __________________ Modulus-86, 186, 286, & 686: 40-240W (8Ω), <-120dB THD. HP-2 Headphone Amp: 660mW, <-130dB THD. Taming the LM3886. Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right

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21st November 2020, 04:40 PM	#21
painted diyAudio Member Join Date: Jun 2012	Pfft, pico Farad strays and nano Farad cap values.

21st November 2020, 05:00 PM	#22
tgreese diyAudio Member Join Date: Feb 2012 Location: Medford MA USA	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?

21st November 2020, 05:59 PM	#23
JoeAlders diyAudio Member Join Date: Feb 2011	"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.

22nd November 2020, 05:11 AM	#28
6A3sUMMER diyAudio Member Join Date: Jun 2016	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.