Thank you for the uploads. I am in the process of building my electronic workshop in my garage. Has good concrete floors and drywall throughout. I work on a lot of reel to reels and receivers. I do this as a hobby. You have many tips that are invaluable. Again thanks for sharing.
Glad to see your "Test Bench". Toooo many of these internet audio test/repair people or the internet tech wannabes don't use any of this stuff. I hope this will show them some things they need to properly test their equipment.
I wish you were my neighbor. Lifelong pro musician here getting into learning how to work on my own old tube gear. Taking baby steps. I am going to build a load box, much simpler than yours although your multi output idea is killer. Having it all hooked up at once is a great idea. I bought a 5x8 trailer full of electronics gear from an estate of an old time electronics guy. Everything from early 50s dumont oscilloscopes to 60s transistor radios , loads of tubes and old tube radios, heath kit tube multimeters etc. and some what looks like early 80s oscilloscopes etc( Tek DC503A Universal counter/timer,FG507 2Mhz Sweeping function generator,PS503A dual pwr supply) Tek 434 storage Ocilloscope, . I have a TV 2A/u and a TV 7 D/U tube tester as well . So in order to use any of it I am on a massive education cramming venture.
I like this... removes the cable clutter on the bench. I did however use only one dummy load and as switching is needed between the left and right channel for testing purposes, one speaker, one dummy, two DPDT... makes it simpler... well done. Great videos... keep doing what you are doing... we all learnt a lot... 73 de K1VMP
Nice test bench/gear! Great information on electronics too but, what really made my day? The Stooges riffing intro! We must be related somewhere down the line. Brothers from another mother perhaps. Salute.
Mark, Thank you for your fun and educational videos. I just looked at your drawing for the test bench and assume the switch marked SPST that feeds the BNC array should actually be labeled SPDT.
This is a great idea and I have started acquiring parts for this project, but as mentioned below both the schematic and the image of the inside of the unit are seriously cropped, and being a rookie in this hobby, I'd like to see this better so that I don't blow anything up. Maybe a link to a full size schematic, images and parts list would be easier than doing another video?
Great vid sir. How would I go about it if I am just building a tube amp, which essential equipment do I need besides the soldering station, Audio Signal Generator, Oszi, DMMs? Thank you and very helpful videos You produce
I use as power resistors, break resistors for the breaks on lift motors. 4R 1000w per piece, and a circuit to put 2 of them in series for 8R loads, or shorten 1 resistor for 4R loads with a switch, also a fuse is in there on the active site of the output, just in case., Also the small circuit to get 10/1 output to protect my gear. I picked the schematics from another CZcamsr, but you have to get 4 of these gigantic power resistors, to get things going for the left and right channel, and it takes some place, so I mounted the with an aluminum rectangle block under the resistors for cooling and then to the wall. And pretty much thick cabling for the inputs. I think 4mm² silicone cables. And all good isolated, because voltages can be high from an output from an amp.
Hello, I'm new to your channel. I'm in desperate need to learn more about basic electronics. Building a dummy load and using my Hitachi oscilloscope (that I have no clue how to use except for testing for outer foils of capacitors) is what brought me to your channel. I would really like to start basic electronics training but have no clue on where I can do that. Do you have any suggestions? I'm almost 70 and retired and have been working on my own vintage Fender guitar amps for about 15 years now and figured out how to repair and maintain them even though I really have no electronics background. In my spare retirement time, I figure it's a good time to start learning about oscilloscopes and how they can help me troubleshoot guitar amp issues. In particular now, I would like to see if an oscilloscope can help me determine where some noisy 60 year old carbon comp resistors might be in the circuit so I can pinpoint which ones to replace. I live by the "only change it if is not functioning as designed" rule on vintage amps and prefer to keep everything as original as possible.
I am trying to duplicate your elegant BCN jack box. From the video shot I am unsure about the 1/10 divider. Is the output at R2 divided to both + and to ground? Is the path at the jack: input goes capacitor, then R1, then R2 where it splits to + and to ground?
Thanks for sharing, even though this is 7 years old. I’m impressed with the quality you got used for the $$$.
Thank you for the uploads. I am in the process of building my electronic workshop in my garage. Has good concrete floors and drywall throughout. I work on a lot of reel to reels and receivers. I do this as a hobby. You have many tips that are invaluable. Again thanks for sharing.
Glad to see your "Test Bench". Toooo many of these internet audio test/repair people or the internet tech wannabes don't use any of this stuff. I hope this will show them some things they need to properly test their equipment.
I wish you were my neighbor. Lifelong pro musician here getting into learning how to work on my own old tube gear. Taking baby steps. I am going to build a load box, much simpler than yours although your multi output idea is killer. Having it all hooked up at once is a great idea. I bought a 5x8 trailer full of electronics gear from an estate of an old time electronics guy. Everything from early 50s dumont oscilloscopes to 60s transistor radios , loads of tubes and old tube radios, heath kit tube multimeters etc. and some what looks like early 80s oscilloscopes etc( Tek DC503A Universal counter/timer,FG507 2Mhz Sweeping function generator,PS503A dual pwr supply) Tek 434 storage Ocilloscope, . I have a TV 2A/u and a TV 7 D/U tube tester as well . So in order to use any of it I am on a massive education cramming venture.
I like this... removes the cable clutter on the bench. I did however use only one dummy load and as switching is needed between the left and right channel for testing purposes, one speaker, one dummy, two DPDT... makes it simpler... well done. Great videos... keep doing what you are doing... we all learnt a lot... 73 de K1VMP
Nice test bench/gear! Great information on electronics too but, what really made my day? The Stooges riffing intro! We must be related somewhere down the line. Brothers from another mother perhaps. Salute.
Fantastic information. Thank you.
Thank you so much for this video :) Awesome !
I love your video intro guitar solo. Very cool!
Mark, Thank you for your fun and educational videos. I just looked at your drawing for the test bench and assume the switch marked SPST that feeds the BNC array should actually be labeled SPDT.
This is a great idea and I have started acquiring parts for this project, but as mentioned below both the schematic and the image of the inside of the unit are seriously cropped, and being a rookie in this hobby, I'd like to see this better so that I don't blow anything up. Maybe a link to a full size schematic, images and parts list would be easier than doing another video?
thank you. yes I did find them right now for $39.00 each.
Great vid sir. How would I go about it if I am just building a tube amp, which essential equipment do I need besides the soldering station, Audio Signal Generator, Oszi, DMMs? Thank you and very helpful videos You produce
I use as power resistors, break resistors for the breaks on lift motors. 4R 1000w per piece, and a circuit to put 2 of them in series for 8R loads, or shorten 1 resistor for 4R loads with a switch, also a fuse is in there on the active site of the output, just in case., Also the small circuit to get 10/1 output to protect my gear. I picked the schematics from another CZcamsr, but you have to get 4 of these gigantic power resistors, to get things going for the left and right channel, and it takes some place, so I mounted the with an aluminum rectangle block under the resistors for cooling and then to the wall. And pretty much thick cabling for the inputs. I think 4mm² silicone cables. And all good isolated, because voltages can be high from an output from an amp.
Hi...Thank you for producing this video for me!
Hello, I'm new to your channel. I'm in desperate need to learn more about basic electronics. Building a dummy load and using my Hitachi oscilloscope (that I have no clue how to use except for testing for outer foils of capacitors) is what brought me to your channel. I would really like to start basic electronics training but have no clue on where I can do that. Do you have any suggestions? I'm almost 70 and retired and have been working on my own vintage Fender guitar amps for about 15 years now and figured out how to repair and maintain them even though I really have no electronics background. In my spare retirement time, I figure it's a good time to start learning about oscilloscopes and how they can help me troubleshoot guitar amp issues. In particular now, I would like to see if an oscilloscope can help me determine where some noisy 60 year old carbon comp resistors might be in the circuit so I can pinpoint which ones to replace. I live by the "only change it if is not functioning as designed" rule on vintage amps and prefer to keep everything as original as possible.
Nice setup. Want to get a distortion analyser but they are so expensive.
building a dual channel dummy load, do I need to keep the amp neg black outputs seperate or can they all have a common ground thanks
I am trying to duplicate your elegant BCN jack box. From the video shot I am unsure about the 1/10 divider. Is the output at R2 divided to both + and to ground? Is the path at the jack: input goes capacitor, then R1, then R2 where it splits to + and to ground?
It would have been nice if you had supplied a link to your box, and have moved the camera around so we could see everything!