300B DIY Budget Tube Amplifier Build DHT SET 

i am a bit new to tubes but 2 watts how that going to get a speaker moving seems like 15 watts would need to be a min and have a bit of head room .my favorite receiver is the pioneer sx-1010

@@overbuiltautomotive1299 one of the finest amps made Decware pushes 2watts per channel. Its not about the watts - its the sensitivity of the speakers. an 86db sensitivity speaker is going to struggle more than 6 ft away ...Now 95-96db sensitivity - BOOM - Most systems (in pure A mode) run on the first couple of watts...

@@arcorob i do understand this and love me some loose and very sensitive speakers i got an old set of warfdales {rosedale }with 15 inch drivers at 10 watts each the walls are rattling all i am all about it. But say party time its my hot rod turbo / big block v8 in me expressed via sound all be it rarely but ill blast a system every now and again blaring some megadeth /skillet fireflight. bands

@@overbuiltautomotive1299 unless you like loud booming rock concert music or you’re looking to shake the walls with you will probably not use more than one watt. If you have the right speakers. I built a 96 db. sensitive efficient speaker Full range Back horn loaded. If you actually push out one full watt of power you’re listening at 96 DB sound level . And that is well above far above comfortable or even tolerable listening level. The special magic and the joy is in the single-ended class A amp design. It’s the sound that is special. And it needs to be coupled with a very high efficient speaker design. With a very clean non-compressed linear recording. When I attended the Burning Amp Festival sponsored by do it yourself AUDIO and Nelson Pass. Nelson designed a 1 W headphone amplifier class A and prove its power they played it I believe it was possibly a 15” Tannoy speaker in a very large room and it was very loud room was filled with about 100 people and everyone was blown away by how a tiny headphone amplifier that fit in the palm of your hand and only put out one watt can produce so much sound

@@coldfinger459sub0 98 percent of the time oh yea 1 watt max

Thank you! Cheers!

Building them from scratch is very fun!

Awesome! Thank you!

This series I did covers a lot of basics about tube amps. ru-vid.com/group/PLtEhh3UpOsiDvbsn1K1Sc1loRlv5xO4Xh

I ended up using the iron off that build for the 300B amp highlighted in this series. I might end up resurrecting it with some different/cheaper OT in the future.

Thanks!

Right now the plan is for 3 chokes: one 10H and two 1.5H mounted underneath, one per channel.

That is the plan, please follow this playlist :) ru-vid.com/group/PLtEhh3UpOsiBHmFNk6RSDzOkE3jm9xnd9

I find myself listening to my 6SQ7/EL34 amp most of the time.

@@SkunkieDesignsElectronics thanks

Thanks!

Thanks for sharing and enjoy! I listen to mine everyday :)

See my channel for my 300B build/schematic. Also at my website: www.skunkiedesigns.com/300b

@@SkunkieDesignsElectronics appreciate it :)

To keep the input impedance high, makes the amp easier to drive

Some of the hardware and knobs I get from youdaelectronics.com/ They also are a good place to get tubes.

@@SkunkieDesignsElectronics I thank you very much!

The chassis for the KT120 should be here today!

@@SkunkieDesignsElectronics i just finished watch your kt120 part video

Go for it! I plan to do a high power KT88/KT120 based amp later this spring.

@@SkunkieDesignsElectronics yes more power . i use up at times all the power of a pioneer sx-1010 not often but sometimes .so ill need to buld a tube amp with guts

I’d like to build a sub 10W class A guitar amp.

It's a pretty step by step, but not as detailed as the 6SQ7 build was. I think using both series, you should be able to and at the end, the DIY amp sound better mostly due to the limitations of the A50 transformers. The A50 mods are less work, end up costing more in total but you don't have to do much if any fabrication.

@@SkunkieDesignsElectronics Awesome. Thank you.

7W at 1% THD

I did, but the 6SQ7 looked more linear and there seem to be a zillion of them out there. Plus I like doing oddball stuff. In my KT88 amp I used a pair of 6JC6A tubes :)

@@SkunkieDesignsElectronics Makes sense. I know 6SQ7s are more abundant as they were so common in radios. I like how you venture toward other tube types. Many builders stick to the ubiquitous 12AX7s and such and that gets dull. 6JC6 a 9 pin sharp cut-off pentode.

Thanks for joining us :)

@@SkunkieDesignsElectronics 🙏🏻my pleasure 😊

Never went to college. Taught myself electronics and yeah women can actually learn things just like men do...

www.skunkiedesigns.com/contact But like you said, quality interstage transformers are $$$. I never said this was the end all, be all design. It's a budget DIY version not a cost is no option model.

It's on my website but I need to update the BOM and the schematic to the newer build using Hammond power iron.

I suspect the total cost today would be approximately $1200.

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Ou33pF9aYbk.html is a video I recently did about reading material. I also just did a 2 part series on reading schematics and have done other educational videos in this play list. blueglowelectronics also has some educational stuff on their channel. ru-vid.com/group/PLtEhh3UpOsiDdHABS0q5byT2gAQ5z31Hk

@@SkunkieDesignsElectronics thank you so much!

From a bang for the buck perspective, the 6SQ7/EL34

@@SkunkieDesignsElectronics do you sell the kits? or is it just order from the BOM?

If it's after the choke, it's fine.

I'm not, so clearly you don't.

Funny you say that, in the next video I.... Well no spoilers lol

There isn't a kit, it's made from a pile of parts I bought.

Good Morning Skunkie, I hope your doing well. I really injoy your channel more then any other on youtube. You have inspired educated and gave me confidence. I am at the lowest point right now in my life dealing with a divorce. I don't know how I would get thew each day without music to lisen to. And you and your channel. My funds are very low at the moment. And I sold my last tube amp. But thank god I ran across your 300B Budget build. You have inspired me to try my best and hopefully be ablie to get all the info I need to find all the parts to build YOUR 300B Butget tube amplifier. You are a inspiration to me. I hope if I have any questions you won't mide me asking? You don't know how much Iapprecate what you do for all of us. Thank you so much.

Interesting idea. My newer stuff does use a smaller logo but the orange dot is a fun idea :)

Sorry, that is beyond my scope of interest or skill!

Steel and I know people talk about the magnetic stuff, but I have never had any issue with that.

Yeah, had a vacation planned. Hope to get back to it soon.

Lots of luck hun

Sorry, no. Possibly will have a DIY kit with partially fabricated chassis next year. Building these by hand is just way too labor intensive but is super fun as a hobby!

I think you are not understanding the intent of this build. This is not the final schematic, just a starting point. You are correct, it's probably going to need to be changed to work the way I want it to, that's part of the process.

As a follow up: like I said, this was just a starting point for the build and you are right, this is a pretty crappy design! I ended up redesigning the frontend to a cascode and it sounds much better with 3X the output. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Ws_P1hdMAwY.html