Search found 243 matches

by Masco
Tue Mar 26, 2024 1:28 pm
Forum: Technical Discussion
Topic: The Lost Art of Cable Lacing
Replies: 16
Views: 408

Re: The Lost Art of Cable Lacing

DC plant wires are still being somewhat laced in ISP/cable hub headends. They don’t use zip ties, everything tied off using the waxy rope.
by Masco
Fri Nov 10, 2023 2:54 pm
Forum: Technical Discussion
Topic: Looking For Amp Transformers
Replies: 10
Views: 3278

Re: Looking For Amp Transformers

Anyone have any experience with Musical Power Supplies iron?? https://www.musicalpowersupplies.com/products/
by Masco
Thu Mar 30, 2023 3:06 pm
Forum: Technical Discussion
Topic: New hand wired 62 Princeton.
Replies: 13
Views: 1414

Re: New hand wired 62 Princeton.

Is that a 1 ohm R in the cathode I see for bias adj.?
by Masco
Mon Dec 12, 2022 11:16 pm
Forum: Technical Discussion
Topic: Hum neutralizing circuit
Replies: 11
Views: 1432

Hum neutralizing circuit

https://youtu.be/3fdkUvnmI9w
I thought this was rather Brilliant.
Single ended only.
by Masco
Sun Aug 21, 2022 1:07 pm
Forum: Technical Discussion
Topic: Shipping costs going up?
Replies: 25
Views: 2170

Re: Shipping costs going up?

dorrisant wrote: Wed Aug 17, 2022 8:36 pm $7.99 is the minimum shipping cost I'e seen for years.
You're probably right, it's been a really long time since I've needed a single part. I'm starting to geez...
by Masco
Sun Aug 21, 2022 12:36 pm
Forum: Technical Discussion
Topic: Mercury Magnetics issues?
Replies: 21
Views: 1819

Re: Mercury Magnetics issues?

Gave up on them like a decade ago for many reasons. Not listing full specs of their products online should be a warning sign.
by Masco
Wed Aug 17, 2022 8:07 pm
Forum: Technical Discussion
Topic: Shipping costs going up?
Replies: 25
Views: 2170

Re: Shipping costs going up?

One diode from Mouser $0.49, shipping $7.99!!!!!!!!! Yeah, something not right! mouser has been like this since i started ordering from them 15 years ago. just like most places it only makes sense when ordering enough stuff to fill the box (so order extras) Hasn’t been this much, maybe half the pri...
by Masco
Sat Aug 13, 2022 3:35 pm
Forum: Technical Discussion
Topic: Shipping costs going up?
Replies: 25
Views: 2170

Re: Shipping costs going up?

One diode from Mouser $0.49, shipping $7.99!!!!!!!!!

Yeah, something not right!
by Masco
Sat Mar 19, 2022 2:12 pm
Forum: Technical Discussion
Topic: I don't understand what's happening here
Replies: 20
Views: 1814

Re: I don't understand what's happening here

Yup, not a gimmick. More like an antenna.
That would suck if your identity was stolen from the amp made on the cheap, but as Dylan said "if you ain't got nothin', you've got nothin' to lose."
by Masco
Wed Feb 16, 2022 9:55 pm
Forum: Technical Discussion
Topic: Hum when connecting to input
Replies: 22
Views: 1577

Re: Hum when connecting to input

Well also any of the coupling caps right after the plate of V1a, V1b or V2a could be leaky and passing low DC voltage down stream to the next gain stage. Unsolder the down stream end of each of these cap and see if you measure any dc voltage above .035. If you start by lifting the down stream end o...
by Masco
Mon Aug 09, 2021 11:13 pm
Forum: Technical Discussion
Topic: JMI AC30/6 NO SOUND
Replies: 72
Views: 6995

Re: JMI AC30/6 NO SOUND

SG = Steve Grovesner the builder for JMI(new).
But of a confusing thread, I’m sure you’ll sort it out :wink: :
by Masco
Mon Aug 02, 2021 2:24 pm
Forum: Technical Discussion
Topic: Benson Monarch
Replies: 480
Views: 69091

Re: Benson Monarch

Reverb transformer is not used in this design. It has a 12DW7 CF stage that feeds an ~800 ohm Z tank. Most of the reading is related to quirks that needed ironing out per particular build and correct component values. But I think this project is worthy of the read, as many have appeared to have succ...
by Masco
Sun Apr 25, 2021 12:27 am
Forum: Technical Discussion
Topic: Benson Monarch
Replies: 480
Views: 69091

Re: Benson Monarch

Signal bleed is probably coming through the plate to 10k and into 2nd stage .
by Masco
Sun Mar 28, 2021 1:32 pm
Forum: Technical Discussion
Topic: Benson Monarch
Replies: 480
Views: 69091

Re: Benson Monarch

Dorrisant- you might want to check your powering of the first two stages as well. It appears you have first stage as split plate, instead of second. Check schematic and photos.