@millercarbon - I would like to discuss with you, if you are willing, crossovers I’m considering for my Apogee Duetta II Signature Series full range ribbon speakers, but I’m on the fence regarding doing it at all (don’t want to lose the “Apogee” sound I’m so addicted to) and, if I do, if I should go with the caps recommended by Music Technology/ Graz in Australia or maybe consider going a different way. The speakers are being sent to Bill Thalmann @ Music Technology for full restoration anyway. I don’t want to potentially (partially) squander the ~$1,200 I’ll be spending for freight (AR to VA). Are you able to private message me? If not, we can take it offline via email if you prefer. Thanks in advance.
Millercarbon's Mega Moab Mod Meander
One of the all time great automotive engineers, Norbert Singer, was a key player in every one of the 16 Porsche LeMans victories from 1970 to 1998. His dominance was such that at one point Porsche had won LeMans more than all other marques combined. This was all accomplished by building on the already solid foundation of Porsche production models. The air cooled flat 12 in the 917 was really two flat sixes combined to make 12. This car so dominated motorsport the rules had to be changed to stop it!
So Norbert Singer modified Porsche production technology to extract the absolute most for racing. His legacy is today’s Singer Vehicle Design https://singervehicledesign.com Norbert doesn’t make for a very good car name so they called it Singer. What is a Singer? It is a modified Porsche. It is in essence a hot rod. What Norbert Singer did was make the most hot rod racing Porsche. What Singer does is take that to the next level, capturing every aspect of Porsche right down to excellence of design and aesthetics.
I am not anywhere near the level of Singer. But that is the spirit of what we are doing: taking an already world-class design and hot-rodding it to be even better. Well, better for me anyway- or so we hope!
The early modders started with substituting off the shelf parts to get more power or less weight. That is pretty much all we are doing here. Would be cool if some day people are doing this with a lot more sophisticated approach. Maybe they will. Maybe even I will. For now though we have the current crossover project.
My approach is pretty simple: better parts sound better.
This lesson was learned back in the late 90’s with Linaeum Model 10 speakers. The designer had a new tweeter and told me how to modify the crossover for it. Simple mod, one cap, one resistor. Bought the parts from Radio Shack, put it together, sounded like crap. Absolute horrid crap! Called him up, he said those parts are crap. Said Musicap, Vishay. But they measure the same? Just do it. I did. It worked. Even though they measure exactly the same, the sound difference is off the charts.
Even though they measure exactly the same. There is a lesson here. For those willing to learn.
So this is the essence of it: Eric Alexander has made a speaker the equivalent of a Porsche 911. Even better: an affordable Porsche 911! But after a while with my 911, after learning what makes it drive and feel the way it does, it was only natural to change the shocks and torsion bar and other items to bring out even more of what I like so much about the 911.
That is what we are doing here. Hot-rodding a speaker. Thank you Rick for the metaphor!
The parts are on order. Next week the fun begins!
So Norbert Singer modified Porsche production technology to extract the absolute most for racing. His legacy is today’s Singer Vehicle Design https://singervehicledesign.com Norbert doesn’t make for a very good car name so they called it Singer. What is a Singer? It is a modified Porsche. It is in essence a hot rod. What Norbert Singer did was make the most hot rod racing Porsche. What Singer does is take that to the next level, capturing every aspect of Porsche right down to excellence of design and aesthetics.
I am not anywhere near the level of Singer. But that is the spirit of what we are doing: taking an already world-class design and hot-rodding it to be even better. Well, better for me anyway- or so we hope!
The early modders started with substituting off the shelf parts to get more power or less weight. That is pretty much all we are doing here. Would be cool if some day people are doing this with a lot more sophisticated approach. Maybe they will. Maybe even I will. For now though we have the current crossover project.
My approach is pretty simple: better parts sound better.
This lesson was learned back in the late 90’s with Linaeum Model 10 speakers. The designer had a new tweeter and told me how to modify the crossover for it. Simple mod, one cap, one resistor. Bought the parts from Radio Shack, put it together, sounded like crap. Absolute horrid crap! Called him up, he said those parts are crap. Said Musicap, Vishay. But they measure the same? Just do it. I did. It worked. Even though they measure exactly the same, the sound difference is off the charts.
Even though they measure exactly the same. There is a lesson here. For those willing to learn.
So this is the essence of it: Eric Alexander has made a speaker the equivalent of a Porsche 911. Even better: an affordable Porsche 911! But after a while with my 911, after learning what makes it drive and feel the way it does, it was only natural to change the shocks and torsion bar and other items to bring out even more of what I like so much about the 911.
That is what we are doing here. Hot-rodding a speaker. Thank you Rick for the metaphor!
The parts are on order. Next week the fun begins!
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- 185 posts total
Sure. PM coming. But I don’t really "do" crossovers. Barely understand the subject. All I do is swap out parts - caps, resistors, inductors - for higher quality parts of the same value. Done a fair amount of this over the years and with speakers, amps, and other stuff, always with good results. Do it right and you don’t really change the fundamental character of the component much at all- it just becomes a whole lot more clean and liquid, with greater detail and a greater sense of ease. Caps are kind of like tubes or cartridges. The better ones are just plain better, but among the better ones you can choose smoother or more analytical. No matter what you choose even the more analytical of the better caps will seem liquid and make even the smoothest cheap cap sound grainy by comparison. |
I read in Sound and Vision magazine the half-million dollar Rolls Royce had a sound system which has software giving access to every pop song ever recorded. It excludes classical music and opera because according to some market research too few people who buy a Rolls Royce prefer that kind of music, something few people would expect. That taught me the lesson; entering the ranks of the super-rich is not a gateway to the higher and more human forms of culture. |
Woke up this morning around 5AM couldn't go back to sleep so started working on the crossover. Incredible how much time it takes to put this thing together with all the tweaks and short leads and tight space. Anyway, just finished soldering it all together. Everything still needs to be glued down but this is pretty much what it will look like. https://systems.audiogon.com/systems/8367 One shot shows the parts just laid out to see if they will fit. Most of them are covered over with fO.q tape and the whole thing is mounted on a Tetrault Quantum of Solace, and will be laminated to a BDR Shelf on Townshend Pods. This all goes on a brace behind the lower woofer. Getting it glued down and in there should take up the rest of the day. Really want to hear this tonight!😍 |
- 185 posts total