Yorkville is a venerable Canadian sound company; back in the mid-20th century, they were basically the only choice in Canada for large-scale sound systems, and they still do pretty well here.
Thank you so much. I'm trying to repair a solid state Peavey Transtube EFX 112 combo amp, and I realized I had no idea what I was doing. This helps so much. Subscribed and liked.
Stuart you have a fine ability to make things understandable. I particularly enjoyed the instruction on the schematics as it helps to understand what is going on inside the amps. Thank you
@@stuartukguitarampguy5830 I'm looking forward to it. It seems to help when one can look at plans and understand what is going on. Fender also had a layout of the amps early on. This has helped me greatly. I'm looking forward to understanding more. You are a great teacher.
Great explanation! very helpful to me. many thanks for making these videos. P.S. i run a 1979 Silverface Fender 135 Bassman . I would never touch this myself, but your video is very useful tom when i restore reel to reel tape recorders.
love this thank you so so much im currently building a deluxe reverb from a book ive 99% completed it but i have a few issues with high voltage and i have no idea how to troubleshoot it but now i will have a better understanding of what is what so again thank you so much for your time and the education
Hi Stuart, just wanted to say thanks for making these videos. Very informative and entertaining. I’m looking forward to watching the rest with a view to one day building my own amp. Keep up the great work 👍
Hi Stuart, very nice for you to want to spend time educating on such a subject. Always nice to refresh the memory. Question; Are the transformers called multi-tap transformers?
Hi Walt I'm pleased you enjoyed it. The actual term 'multi tap transformer' is not really often used. Strictly speaking it refers to any winding which has more than two terminals on the SAME winding. So in practice this is usually the primary. It might have a basic 240V rating across the whole winding, but then have taps for say 230V and 220V. The term 'multi-tap' is also loosely used to describe a transformer with several secondary windings, e.g. 50V, 12V, 6.3V etc. But this is not really a correct useage of the term. Probably more info than you wanted!
Hello Stuart hope your well butt..The transformer!! When your talking about the secondary side having a few different functions, is that one lump of iron/box.. from one primary supply? Many thanks for sharing your knowledge Sir.. yours gratefully Mark. 😊👍
Hi MArk. Yes, one lump of iron. There's a single primary winding (e.g. 240V AC) then a number of secondary windings to give the different voltages you require, e.g. the valve heaters, the HT and so on. The more turns of wire on the secondary, the higher the voltage you get.
In the transformer, when you get to cables of the secondary for high voltage, it is irrelevant in whicever order you connect them to close the circuit right? The current going between those cables being AC you simply cannot get polarities wrong, since by definition the polarity goes all over the place in that circuit, correct? In the smoothing capacitors, in any amp circuit you can swap those capacitors that were orginally there by any amount of voltage as long as you keep voltage greater equal to original and microFarrads greater equal than original? Thanks a lot.
Hi YEs both of the things you say above are true. BAsicaly, AC - it doesn;t matter about polarity. DC it does. ANd yes, what you say about capacitors is correct. Think of 'The Working Voltage' as the amount of voltage it can stand without failing. So putting a HIGHER voiltage cap is good. Lower voltage and it could fail.
Excellent. I've been struggling to find out what goes on in these things for about 45 years!
Really interesting! Many thanks!
Hi Steve
I'm glad you liked it.
These series are excellent and helping tremendously to understand valve amps. Thank you!
Thanks Rob.
Sir, you are very good at teaching. Thank you so much for your videos. Look forward to seeing more!
I'm glad you enjoyed it.
Enjoying your little series here very much. Thanks.
Glad you are enjoying it.
A very good job on this serie of videos for people like me who want to learn how works an amp.
Thank you for sharing your knowledge
A French viewer
👍🏽
Thanks Nicolas.
Yorkville is a venerable Canadian sound company; back in the mid-20th century, they were basically the only choice in Canada for large-scale sound systems, and they still do pretty well here.
Thank you so much. I'm trying to repair a solid state Peavey Transtube EFX 112 combo amp, and I realized I had no idea what I was doing. This helps so much. Subscribed and liked.
I often realise I have no idea what I'm doing!
Hi Stuart, just a quick thanks from my son who's found your videos very easy to understand and educational - all much appreciated.
Fantastic that. Nice one Stuart👍🎸
Thanks Mark
I very much appreciate your video of amplification. Thanks
Thanks!
Stuart you have a fine ability to make things understandable. I particularly enjoyed the instruction on the schematics as it helps to understand what is going on inside the amps.
Thank you
Thanks Michael I'm about tyo do a video on how to read schematics.
@@stuartukguitarampguy5830 I'm looking forward to it. It seems to help when one can look at plans and understand what is going on. Fender also had a layout of the amps early on. This has helped me greatly. I'm looking forward to understanding more. You are a great teacher.
Great explanation! very helpful to me. many thanks for making these videos. P.S. i run a 1979 Silverface Fender 135 Bassman . I would never touch this myself, but your video is very useful tom when i restore reel to reel tape recorders.
Thanks! I'm really pleased you enjoyed it.
Thank you very much for your educational explanation !
Thanks Mila
love this thank you so so much im currently building a deluxe reverb from a book ive 99% completed it but i have a few issues with high voltage and i have no idea how to troubleshoot it but now i will have a better understanding of what is what so again thank you so much for your time and the education
I'm glad it was useful for you. Obviously be super careful around those high voltages!
Good job Stuart. Always room to pick up some new knowledge.
Hi Stuart, just wanted to say thanks for making these videos. Very informative and entertaining. I’m looking forward to watching the rest with a view to one day building my own amp. Keep up the great work 👍
Thanks Gerry.
Another fantastic video. Thank you!
Many thanks!
Stuart thank you so much
Thank you. Thank you. Thank you.
Glad you enjoyed it!
Hi Stuart, very nice for you to want to spend time educating on such a subject. Always nice to refresh the memory. Question;
Are the transformers called multi-tap transformers?
Hi Walt I'm pleased you enjoyed it. The actual term 'multi tap transformer' is not really often used. Strictly speaking it refers to any winding which has more than two terminals on the SAME winding. So in practice this is usually the primary. It might have a basic 240V rating across the whole winding, but then have taps for say 230V and 220V. The term 'multi-tap' is also loosely used to describe a transformer with several secondary windings, e.g. 50V, 12V, 6.3V etc. But this is not really a correct useage of the term. Probably more info than you wanted!
The .01/400V capacitor in the primary circuit of the power supply (at 23:30) is the infamous 'death capacitor'.
Yes I usually snip that if I see it.
Hello Stuart hope your well butt..The transformer!!
When your talking about the secondary side having a few different functions, is that one lump of iron/box.. from one primary supply?
Many thanks for sharing your knowledge Sir..
yours gratefully Mark. 😊👍
Hi MArk. Yes, one lump of iron. There's a single primary winding (e.g. 240V AC) then a number of secondary windings to give the different voltages you require, e.g. the valve heaters, the HT and so on. The more turns of wire on the secondary, the higher the voltage you get.
@@stuartukguitarampguy5830 Brilliant, thank you Sir👍
Very informative..Thanks for sharing..Ed..Herts..😁
In the transformer, when you get to cables of the secondary for high voltage, it is irrelevant in whicever order you connect them to close the circuit right? The current going between those cables being AC you simply cannot get polarities wrong, since by definition the polarity goes all over the place in that circuit, correct? In the smoothing capacitors, in any amp circuit you can swap those capacitors that were orginally there by any amount of voltage as long as you keep voltage greater equal to original and microFarrads greater equal than original? Thanks a lot.
Hi YEs both of the things you say above are true. BAsicaly, AC - it doesn;t matter about polarity. DC it does. ANd yes, what you say about capacitors is correct.
Think of 'The Working Voltage' as the amount of voltage it can stand without failing. So putting a HIGHER voiltage cap is good. Lower voltage and it could fail.
Awesome and informative videos but the way he SLAMS components down on the table always startles me 😂
Ha ha. I haven't noticed that!