Instead of noisy brushes, use ball bearings to make the connections! One bearing can be grounded to the frame, the other one insulated. The wires to the speaker soldered to the inside of the bearing, and wires soldered to the outside. One time I took 2 stadium horns, each being 3 foot long. The shaft had the ball bearings to make the electrical connections to the speaker. Then a washing machine motor to spin them with. The cabinet was so large it could only be moved by a big trailer. I designed and built this as a 16 year old for a friend who wanted the largest Leslie speaker in the world! Well, he got it! At high school dances when his band played this huge leslie was the extreme novelty! He could have gone with one horn but then balancing it would have been a big problem. Using two identical ones is easier! Even with it being a single speed, he liked cycling it up and down constantly! I'm about to build a mini-Leslie using a tiny dc motor controlled by an Arduino micro controller for doing slow and fast spins. The speaker will not be moving, a baffle will be directly attached to the shaft of the motor. I want the speaker to be 8" or less. This would be great for practice. czcams.com/video/sajG6tvN-bE/video.html is the link to my lastest one to build!!!
In the mid 1960's, I worked at the Leslie factory in Pasadena Ca. (For a full $1.25/hr!) I worked on the motor assemblies that turned the baffles. If a motor was noisy, the technique was to tap (with a hammer!) the motor on the bearing assembly till it was quiet. Precision in action!
3:08 Once upon a time, I drilled a 4mm hole just like that. I made a hole in my ring finger, and I have never drilled a hole like that again. Proper workpiece holding is the key to safe and efficient work. Anyway, very interesting project! Good to have you back ;)
No fingers behind that hole! I ran a 1/8" drill bit into the tip of a finger once and kept the presence of mind to keep the drill spinning as I pulled it back out dragging some hamburger with it. :)
The speaker in a Leslie doesn't actually turn. It is the horns projecting the sound above the speaker that turn. I made one when I was a kid - along with a Frampton style voice bag. Busy childhood.
hahaha. I found one in a wurlitzer organ I got off of freecycle once. It was basically a stationary driver, and seperate motor driving a spinning drum with a sort of horn on one side.
I think an interesting solution is to use several speakers and switch them. speakers located around the circle of course. In this way, we will rotate the sound.
Yo, dont bother with noisy brushes, use ball bearings with one insulated from the shaft to make speaker wire connections. As a teen, I took two 3 foot stadium horns and actually spun then with a washing machine motor. I used a threaded rod with one bearing on one end not insulated from the shaft. Then on the other end the bearing was insulated. One wire goes from the inside of the bearing to the speaker, the other connection is to the outside of the bearing. I spun the speakers vertically instead of horizontally. The bearings were recessed into the sides of the case, then the pulley held by bolts to the shaft, and drive belt going to motor. I originally tried brushes but they spark like crazy. With the weight of these massive speakers pressing down on the bearing, the connection is made through many balls at a time. It was totally electrical noise free! This leslie was so large that it had to be hauled in a truck or big trailer. I think I made the worlds largest. Just the diameter for the speakers to rotate was 7 foot... When I played in a band EVERYONE marveled at it. The box stood almost 5 foot. It was a MONSTER!
hey do you have any videos on restoring a DUAL model 1019 turntable?I was given one and I wonder if there are any cool hacks for it. Posibly some plinth hacks, dust cover hacks, custum parts that could be made.
Would the effect be more pronounced if the box didn't have a back for the sound to bounce off? Maybe a hole, like using a door knob bit on your drill. I dunno.
Add some felt inside the cabinet to dampen it. Now sounds like metallic tremolo. That and some grease on movong parts should decrease the mechanism noise. Had to rewrite the message. Android turns into windows: it updated the CZcams app then shut it down whilst I was in the middle of writing....
Speaker is too small to provide full frequencies and the noise from the rotation device makes this useless. Rather than throwing sound around, it's sounding constricted.
Instead of noisy brushes, use ball bearings to make the connections! One bearing can be grounded to the frame, the other one insulated. The wires to the speaker soldered to the inside of the bearing, and wires soldered to the outside. One time I took 2 stadium horns, each being 3 foot long. The shaft had the ball bearings to make the electrical connections to the speaker. Then a washing machine motor to spin them with. The cabinet was so large it could only be moved by a big trailer. I designed and built this as a 16 year old for a friend who wanted the largest Leslie speaker in the world! Well, he got it! At high school dances when his band played this huge leslie was the extreme novelty! He could have gone with one horn but then balancing it would have been a big problem. Using two identical ones is easier! Even with it being a single speed, he liked cycling it up and down constantly! I'm about to build a mini-Leslie using a tiny dc motor controlled by an Arduino micro controller for doing slow and fast spins. The speaker will not be moving, a baffle will be directly attached to the shaft of the motor. I want the speaker to be 8" or less. This would be great for practice. czcams.com/video/sajG6tvN-bE/video.html is the link to my lastest one to build!!!
In the mid 1960's, I worked at the Leslie factory in Pasadena Ca. (For a full $1.25/hr!) I worked on the motor assemblies that turned the baffles. If a motor was noisy, the technique was to tap (with a hammer!) the motor on the bearing assembly till it was quiet. Precision in action!
3:08
Once upon a time, I drilled a 4mm hole just like that.
I made a hole in my ring finger, and I have never drilled a hole like that again. Proper workpiece holding is the key to safe and efficient work.
Anyway, very interesting project! Good to have you back ;)
No fingers behind that hole! I ran a 1/8" drill bit into the tip of a finger once and kept the presence of mind to keep the drill spinning as I pulled it back out dragging some hamburger with it. :)
The speaker in a Leslie doesn't actually turn. It is the horns projecting the sound above the speaker that turn. I made one when I was a kid - along with a Frampton style voice bag. Busy childhood.
Actually the later Leslie models had speakers that turn but they are not the favorite type of Leslie model.
Most excellent! Uncle Doug built one. A little different. Your's works fine! Thankz
LOL ! I love your videos. So much fun.
Cool project and nice to see HaW TV (Mobile) back! I have the same Hic-Top 3D printer you have and your build videos were very helpful. 73
hahaha. I found one in a wurlitzer organ I got off of freecycle once. It was basically a stationary driver, and seperate motor driving a spinning drum with a sort of horn on one side.
Pretty cool project.
I think an interesting solution is to use several speakers and switch them. speakers located around the circle of course. In this way, we will rotate the sound.
Sounds a bit like the tremelo on the old musicman valve amps. Cool! :)
Yo, dont bother with noisy brushes, use ball bearings with one insulated from the shaft to make speaker wire connections. As a teen, I took two 3 foot stadium horns and actually spun then with a washing machine motor. I used a threaded rod with one bearing on one end not insulated from the shaft. Then on the other end the bearing was insulated. One wire goes from the inside of the bearing to the speaker, the other connection is to the outside of the bearing. I spun the speakers vertically instead of horizontally. The bearings were recessed into the sides of the case, then the pulley held by bolts to the shaft, and drive belt going to motor. I originally tried brushes but they spark like crazy. With the weight of these massive speakers pressing down on the bearing, the connection is made through many balls at a time. It was totally electrical noise free! This leslie was so large that it had to be hauled in a truck or big trailer. I think I made the worlds largest. Just the diameter for the speakers to rotate was 7 foot... When I played in a band EVERYONE marveled at it. The box stood almost 5 foot. It was a MONSTER!
That's awesome!!!
Would it be easier to spin just the baffle instead of the speaker....less noise, less work less moving parts to fail?
sweet your back Dino
At first i thought this might be some surround sound thing, that works a bit like one of those POV displays, but just with sound :)
Back in the Hack Shack!
gotcha! so its kinda like slip rings?
hey do you have any videos on restoring a DUAL model 1019 turntable?I was given one and I wonder if there are any cool hacks for it. Posibly some plinth hacks, dust cover hacks, custum parts that could be made.
Would the effect be more pronounced if the box didn't have a back for the sound to bounce off? Maybe a hole, like using a door knob bit on your drill. I dunno.
This is how it was done before it was so easy to do it electronically.
Add some felt inside the cabinet to dampen it. Now sounds like metallic tremolo. That and some grease on movong parts should decrease the mechanism noise. Had to rewrite the message. Android turns into windows: it updated the CZcams app then shut it down whilst I was in the middle of writing....
ugh. that stinks. that windows reference though haha
Long time no see! Nice project...
But please start an other motorcycle project 👍🏻
No time! Too busy running a business. :)
Sounds like a tremlo.
What about using a Piezoelectric speaker?
It is very thin, even thinner than a quarter.
en.wikipedia.org/wiki/Piezoelectric_speaker
need more hackaweek,,,
Do i voice box next.
Speaker is too small to provide full frequencies and the noise from the rotation device makes this useless.
Rather than throwing sound around, it's sounding constricted.
7t
Pfuscher
Dosnt work