Hudson Broadcast Dual Teardown! UK-made Si/Ge Hybrid Preamp!

[@seanbell8216]

These videos are wonderful. I love how much detail you go into, learning something new every video. It would be great to hear you explain a little more detail about the unique design choices of each circuit.

[@meesterdinglefritz2064]

Just stumbled on your channel and found myself watching all of your videos start to finish. This is the greater idea for a video series I’ve ever come across!! Keep up the great work, I’ll be patiently awaiting the next video.

[@ricardocruz-71]

Hi Joe - just discovered this channel as was searching for info on the Hudson Broadcast as building a pedal based upon it (Jed's Peds Bird Strike). So really interesting to see new ones with PCB and you look at certain parts, particularly the transistor values in the broadcast. Really useful and very well presented and filmed! Suggestion for a pedal teardown from me would be the Way Huge Aqua Puss (mkII), as I found a PCB for that to build in the future. I'm a subscriber now!

[@graybenchelec]

Thank you - welcome 😀

[@trintdaddylandis]

i love your channel. please keep bringing us new videos with interesting circuits. yours is quickly becoming my favorite channel. im in the process of building one of these after having watched your video. 5/5

[@josephestes7076]

Ok, I'm new to the channel and I love it here. Great pedal and thanks for the education.

[@hookydoo]

Those knobs look as though they might be from "Love my Switches". I buy a lot from them and some are better than others. Overall I have had good luck with them. I am loving your channel! Been taking stuff apart since I was very young. Got sta know what’s in there!

[@heggy_69]

I was wondering if you could use solder lug pots on pcb mount holes, you may have saved me buying some more pots lol

[@Whitewallsessions]

That Khruangbin-esque backing track...

[@graybenchelec]

It's a song from the Epidemic Sound library, Got Caught in Amsterdam by Arc De Soleil. And yes, very Khruangbin :)

[@benevolentessence8809]

this would be perfect with the OEP transformer and 2 germanium transistors AC128 and NKT 275

[@LysanderLH]

Just thought i'd say thanks for an interesting video.

[@xjohn1970]

please tear down a Bogner La Grange

[@boimesa8190]

Please please PLEASE do the Fairfield Circuitry Accountant 🙏🙏🙏🙏🙏

[@patrickbutcherine142]

With Cole pots that far off from schematic specs... Congratulations you got yourself a Broadcast Variant!! All sorts of stuff happens/ can happen when you switch from strip board/ VERO to PCB WHICH can result in such drastic value difference's. I'd want my broadcast on VERO. I'm old school guts. This PCB is too new. If it was done like the very first big muffs and the single side red PCBs with the Rivers of Solder that would be even more awesomeness and a combo of both would be outta this world. I'd love this pedal socketed and a couple more bells and whistles. Fuzz factory style

[@ShlomirBareket]

mine is actually on a veroboard!

[@erikvincent5846]

What good circuits would you recommend for really low gain germanium transistors (40 or less hfe) or high leak germanium transistors (300uA and greater)? Aside from a unity buffer.

[@graybenchelec]

The low gain germs could be used in any pedal that incorporates a darlington pair. Check out this article from Steve @ small bear: diy.smallbearelec.com/Projects/OhMyDarlingRM/OhMyDarling.htm I believe some of the tone benders requirer higher leakage germs. Good luck!

[@erikvincent5846]

@@graybenchelec I've done the Sziklai pairs before, like on Small Bear's site, but Darlington pairs with 2x germanium transistors, the leak multiplies, so 20uA x 20uA becomes 400uA, which usually isn't usable. That and 20 hfe x 20 hfe equals 400 hfe, which also is a bit hot, unless I want to build a Big Muff. I did find making a low gain, low leak ge as the first half of a Darlington, and then taking a 2n3905 (the 2n3906's lower gain sibling) and flip the pinout 180 degrees, I can get around 100-ish hfe and around 100uA of leak, but so far, that's it.

[@graybenchelec]

@@erikvincent5846 Yeah that's the idea, using silicon for "half" the darlington pair. You could also try your low leakage Ge in a percolator. I've read a whole range of hFEs work in that circuit.

[@alexisdrosopoulos]

The pots look like bourns I think, but I may be mistaken.

[@NoCoverCharge]

I love my broadcast

[@ssm445]

Current PCB is marked 2023, Revision 1.1

[@chriskane8103]

Wasn't it 0.125mA rather than 125mA on that PNP Germanium?

[@graybenchelec]

If I was testing leakage at that point, then yes definitely. 125uA of leakage is acceptable, 125mA is absolutely not haha!

[@franciscovalenzuela152]

It looks like is made from inferior parts, am I wrong?

[@joaogoncalves8220]

what does the transformer do tone wise?

[@alessiovitali315]

Good question. It's a 1:1 one, too.

[@jorriffhdhtrsegg]

it distorts presumably

[@searchiemusic]

i don't like that they're using the neve styled knobs for pots, he'd be so mad at that, his philosophy was if it was a pot it should be easy to turn and if it's a rotary it should have the wings to give more leverage

[@TheTubeDude]

0.075 ma is not 75 ma. But you know that.