I have an m3 and always called the bass my fog horn.the way the back is open the lower bass will cancel out, if you want really low good bass you have to run a separate speaker or amp/speaker that is made to reproduce really low bass.
Dear Muckelroy Keyboard Repair. Just like Greg Frazier, I am curious as well. Would have pictures available or a drawing to help us blind deaf and dumb to understand how you did your modification? It is very cool. I just got a 1956 M3 and can't wait to change the capacitors, clean it and get it back to new. I have an amplified 125 leslie, a 147 and a 760 as well as a 1956 Hammond C3. After seeing the MKR Bass Foldback, I had a thought. I have a set of drawbars from an RT2. What If I found a way to mount and enclose the additional drawbars to the bottom of the key board. Would I be able to add the lower notes, or octaves. For example: Have the existing lower manual drawbars pushed in (at zero), and use the added set located to the left and below the keyboard for the lower notes like a b3. this would negate the high notes played on the lower manual of course, but I would think it could work for playing fuller bass notes on the lower manual like on a B3. Thank you. Tom from Edmonton, Alberta Canada
I'm afraid it's not for a beginner to undertake. I've installed foldback on M3s several times, but this job was about triple the time as foldback alone. Post #40 of this thread explains what I did. www.organforum.com/forums/showthread.php?38192-Spinet-bass-foldback-ideas So what I mean by "rewiring a set of contacts" is this... Find the key contact, and fish out the wire that connects the key contact to the inside of the terminal strip. Not easy to do, and have to be very careful not to damage the wire. When you find the wire, cut it as close to the terminal strip as possible, and carefully pull it out. Leave the wire attached to the key contact. Then, solder the wire to the new terminal that it's going to. In total I had to disconnect and re-solder 88 resistance wires. (2 drawbars worth of contacts) and reorganize the drawbar wires. I had to label each wire. It was a mess, but I took my time and tried keeping the wires neat and orderly when reinstalling it.
Do you know how to fix the problem of the volume going down when you turn the percussion to ‘normal ‘ setting? I hear it’s a common thing with Hammond organs
Do you have foldback on the upper manual with all the drawbars that have missing tones? I’ve done foldback on the highest drawbar for mine but I’m trying to figure out how I might be able to do it for the other drawbars which lose tones as well, seems to be a lot more difficult
I looked at your post on the forum, but I still don't quite get what is going on. Are you using the pedal tones? Or is this effectively the same as rewiring the terminal strip of the manual, just a different method?
In short, yes it's similar to rewiring the terminal strip. But rather than rewire the terminal strip on the outside, the key contact resistance wires are re-wired from inside the terminal strip. This way, you don't lose out on frequencies 80 through 91 entirely in the upper drawbars/registers.
How would that work exactly? I think my video explains why I needed the first two drawbars out at the same time, at minimum, to create the resultant octave drop. You can't wire two sets of frequencies to a single bus bar, or those frequencies are shorted across the entire organ.
I have an m3 and always called the bass my fog horn.the way the back is open the lower bass will cancel out, if you want really low good bass you have to run a separate speaker or amp/speaker that is made to reproduce really low bass.
Dear Muckelroy Keyboard Repair.
Just like Greg Frazier, I am curious as well.
Would have pictures available or a drawing to help us blind deaf and dumb to understand how you did your modification?
It is very cool. I just got a 1956 M3 and can't wait to change the capacitors, clean it and get it back to new.
I have an amplified 125 leslie, a 147 and a 760 as well as a 1956 Hammond C3.
After seeing the MKR Bass Foldback, I had a thought.
I have a set of drawbars from an RT2. What If I found a way to mount and enclose the additional drawbars to the bottom of the key board. Would I be able to add the lower notes, or octaves.
For example: Have the existing lower manual drawbars pushed in (at zero), and use the added set located to the left and below the keyboard for the lower notes like a b3. this would negate the high notes played on the lower manual of course, but I would think it could work for playing fuller bass notes on the lower manual like on a B3.
Thank you.
Tom from Edmonton, Alberta Canada
I'm afraid it's not for a beginner to undertake. I've installed foldback on M3s several times, but this job was about triple the time as foldback alone. Post #40 of this thread explains what I did. www.organforum.com/forums/showthread.php?38192-Spinet-bass-foldback-ideas
So what I mean by "rewiring a set of contacts" is this... Find the key contact, and fish out the wire that connects the key contact to the inside of the terminal strip. Not easy to do, and have to be very careful not to damage the wire. When you find the wire, cut it as close to the terminal strip as possible, and carefully pull it out. Leave the wire attached to the key contact. Then, solder the wire to the new terminal that it's going to.
In total I had to disconnect and re-solder 88 resistance wires. (2 drawbars worth of contacts) and reorganize the drawbar wires. I had to label each wire. It was a mess, but I took my time and tried keeping the wires neat and orderly when reinstalling it.
@@sopranojamhi! This link is dead :( . Any chance you could reupload?
Do you know how to fix the problem of the volume going down when you turn the percussion to ‘normal ‘ setting? I hear it’s a common thing with Hammond organs
Jump the resistor near the matching transformer. In a console, it is R1 (3.9M). In a spinet, it is R2 (1M)
I was thinking it was just the camera auto-adjusting its range...
Do you have foldback on the upper manual with all the drawbars that have missing tones? I’ve done foldback on the highest drawbar for mine but I’m trying to figure out how I might be able to do it for the other drawbars which lose tones as well, seems to be a lot more difficult
I looked at your post on the forum, but I still don't quite get what is going on. Are you using the pedal tones? Or is this effectively the same as rewiring the terminal strip of the manual, just a different method?
In short, yes it's similar to rewiring the terminal strip. But rather than rewire the terminal strip on the outside, the key contact resistance wires are re-wired from inside the terminal strip. This way, you don't lose out on frequencies 80 through 91 entirely in the upper drawbars/registers.
😊
Having the lowest notes on the 16 ft Drawbar would give you more notes
How would that work exactly? I think my video explains why I needed the first two drawbars out at the same time, at minimum, to create the resultant octave drop. You can't wire two sets of frequencies to a single bus bar, or those frequencies are shorted across the entire organ.