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In Reply to: Re: SPC designs posted by Inmate51 on December 16, 2024 at 14:44:35
OH NO!!!!! another one that is disrespecting self-taught DIY. The same DIY that actually built the audiophile hobby into what it is.
You know who Les Paul is? He was a high school dropout average student. He was a self-taught luthier and musician with 16 number 1 hits on the billboard top 40 from 1950 to 1954 and he made the world's most famous electric guitar the "Less Paul" There is a picture of les Paul's workshop guess what kind of speaker is hanging on the wall? A Lansing Iconic made by my boy James Martini aka James Lansing another self-taught speaker designer and not only did he design the cabinets and crossovers he designed the actual drivers he was the first speaker manufacturer to use permanent magnets on speakers until then everything was field coil drivers he was also first to use ribbon wire on voice coils and use high-speed voice coil winding techniques. The Lansing Iconic is the most iconic speaker in the world why? First to use permanent magnets and first to use ribbon voice coil wire high speed voice coil winding techniques and the Iconic was also the world's first studio monitor, and this was all in 1939!!!! The iconic also had the best response of any speaker on earth in its day. Not bad for a mechanic that taught himself how to build drivers and horns and then design speakers using the drivers he created and built. And he was 100% self-taught. So, I find it extremely funny that two of the most important people in the world when it comes to music and the production of music, and the reproduction of recorded music were both self-taught do it yourself guys. Les Paul is also responsible for overdubs "laying down two identical guitar tracks in different octaves" and for multitracking. Things that are still used in recording studios today 75 years after the great Les Paul did it first. Just like James Lansing manufacturing technics that are still being used today 95+ years !!!! after James Lansing did it for the first time. And that is only a glimpse into what these two self-taught men accomplished Not bad for a couple of self-taught DIY guys.
So, when you flippantly throw around terms like self-taught & DIY like they are inferior you make yourself look unknowledgeable. Where would you go to school to learn speaker design? I have never heard of speaker design university. Fact is no speaker designer in the history of speaker design went to speaker design school LOL!!!! All speaker designers I repeat all speaker designers in the history of speaker design have been self-taught. I can't believe you had no clue speaker designers were self-taught.
So now let's answer your loaded question. Yes, I am self-taught and proud to be self-taught. As far as where I have worked and what I have accomplished that is my personal business. Why are you trying to make it your business? I will tell you why you're trying to make it your business. You are asking because you feel you have lost a conversion and now you are upset so you're now asking me what you think would be loaded questions to try to disparage my abilities to know understand design and build speakers all of this so you can try to make yourself feel better about your inabilities and that is 100% your fault not mine so do not drag me in to your immature 2nd grade mind games Plus, you do not Santa to see you being naughty. It is so obvious that when people get irritated, they will start to attack and when they attack, they don't think and trap themselves into a corner and end up looking stupid. At that point in time its best for them to just stop so they do not embarrass themselves further.
Follow Ups:
"OH NO!!!!! another one that is disrespecting self-taught DIY."No need to be defensive. I'm not disrespecting anyone, just confirming how you've described yourself. Heck, for all I know, you might have a Master's degree in physics.
Clearly, you're passionate about the sound reproduction capabilities of "full-range" drivers. I'm a skeptic, but, being an open-minded guy, and always interested in learning, I'm very interested in seeing a few of the performance measurements that you've done of various drivers, and especially of your own completed system designs.
Also, as I asked previously, do you sell any of your speakers, or are they only for your own personal use? I'm sure that other folks here would also like to know more about your speaker designs. (Think of it as free advertising!)
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We are inclusive and diverse, but dissent will not be tolerated.
Edits: 12/17/24
Sorry if you assume I am defensive. And yes, I am passionate about the sound reproduction of all speakers from the 1930's to present including full-range drivers. As far as my measurements, how could they help you know anything other than they have a flat response and what frequency range they have. Measurements as important as they are can't tell you how a speaker sounds. You can have two 2-way speakers both using different 8" drivers with different 1" silk dome tweeters both can play flat from 45 HZ to 20,000 KHZ but one could sound better than the other so how would you know from measurements.
As far as all my measurements go they are all taken with the driver in the cabinet that was designed for it. So, If you want to compare my measurements with the manufactures it wont work because the manufacturer measures drivers in free air not in cabinets. So If you measure a speaker's frequency response in free air then in a ported cabinet then a sealed cabinet you would see the all are slightly different including the impedance. For example a woofer in a sealed cabinet will only have one impedance spike while the same woofer in a ported cabinet will have two impedance spikes.
If I had a Visaton bg-20 8" full-range and I measured it in a 1 cubic ft sealed cabinet, it would have a F3 of 73 HZ put that same driver in a 1.5 cubic ft ported cabinet you now have a F3 of 45 HZ HUGE difference!!!! So, my measurements are taken from different ways the drivers are used in the designs I have used them in so I am having a hard time understanding how this would help you in any way.
And as far as measurements go do you know how measuring drivers work? It is not a picture of a frequency response and a picture of an impedance response. When you measure a driver you are getting a file its called either a FRD file that is for frequency response or a ZMA file that is impedance response you then have to upload these files into simulation software then you will see their response on a graph which is what your thinking of when some one like a designer or manufacturer takes a screenshot of a driver's FRD or ZMA while those files are open in simulation. All my measurements are in the form of FRD & ZMA files not pictures. I have plenty of FRD & ZMA files of various drivers measured in the cabinets they were designed for. If you wanted to see them, you would need to upload them into simulation software to view them and their response will not match the manufacturers who measure in free air.
And would you also like waterfall graphs and polar plots for drivers? These are important if you want to look at drivers decay or dispersion. Do you want to see the filter response and group delay along with current and voltage measurements? How about the impulse and step response.
What measurements are you interested in because all play a factor in the design of a speaker, not just frequency response like people think. Makes no sense to look at speaker measurements and look just at frequency and impedance. That's like buying a car based only on its 0 to 60 times. It makes no sense what if it goes 0 to 60 faster than any car but takes twice as long to stop? Would you still buy it?
You said it yourself you like to learn so If I was you i would start with Vance Dickson loudspeaker cookbook I would also check into buying Clio pocket 3.0 or Dayton Omni Mic & DATS V3
And to stop you from bugging me about my speaker designs & measurements I will design and build a speaker and post the process here in this forum. I have a couple designs in mind. One is a transmission line using small drivers like 8" so maybe a 8" full range with a tweeter. Or I do have some empty cabinets 14" wide 14" deep 26" tall, maybe a 12" with a 8" full-range and a small format compression driver on a small waveguide, a modern version of an electro voice Leyton, a speaker made between 1950 to 1960. Or I could do a 10" woofer in my 14 x 14 x 26 cabinets with a 4" to 6" full-range and a nice dome tweeter. I will sit down after new year's and figure out what design, then I will order the components and start the build. This should be pretty fun. Maybe I could even video the process of how to design the crossover, post videos on you tube and share those videos here in the forum.
Thanks for the reply.
More later.
BTW, I've had Vance Dickason's 4th edition for about 30 years. Good book.
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We are inclusive and diverse, but dissent will not be tolerated.
I don't even know what to say I am at a loss for words.
"to stop you from bugging me about my speaker designs & measurements I will design and build a speaker and post the process here in this forum. I have a couple designs in mind."Not bugging you. Just continuing the conversation. Again, no need to be defensive.
And, there's no need to build a new speaker. You can take that off your to-do list. In an earlier post a month or two ago, you said you're a speaker designer. So, just post something which you've already built and measured. That would be great.
Lastly, I (and maybe other folks) am fine with data files or screen shots. Whichever, or both.
*********
We are inclusive and diverse, but dissent will not be tolerated.
Edits: 01/02/25
This is twice now you have assumed I am being defensive. When actually it is you who is being defensive. The number one reason for someone to act defensive is their ego was hurt, or they were criticized or corrected and did not like it.
So, after you were corrected which is not my fault you were the one who was wrong you took offense to being corrected. You then started googling me and messaged me and wanted to know who my employer was and what speakers I have designed and built.
You also in the last two of your posts have used a common tactic that people that hide behind screens use in forums and comment sections daily. That is, you mention the other people in the forum when you said other people would like to see builds/measurements think of it as free advertisement. And in your last post when you mentioned other folks. There is absolutely no reason to mention other people when asking me to post measurements.
When you do that, you are trying to make me think that everyone is watching, and you think you have me backed into a corner because I can't design and build speakers. Do you realize how childish and immature that is?
I know you're type you will keep bugging me for measurements trying to prove to yourself that I can't design and build speakers because some way that makes you feel better about being wrong. So, if I do Post measurements what will you say I plagiarized them from another website they're not mine who knows what in the world you could come up with.
I know I told you in a previous post I was going to post a build in this forum start to finish. I have changed my mind I'm not going to post a build start to finish in this forum.
I'm going to post two builds start to finish in this forum. Both builds will use a full range driver. I already have a couple builds in mind. One build will be a 10 in woofer in a sealed cabinet with a 4-inch full range and a dome tweeter.
Since the first build is just a common three-way, I'll do something a little more interesting on the second build. I have a pair of 15-inch drivers been laying around for years so I'm going to do my version of a slot loaded open baffle. The slot loaded open baffle will also use a full range more than likely an 8-inch full range driver what type of Tweeter I don't know I have many compression drivers and wave guides laying around we'll just have to wait and see.
And of course, 100% of the build will post here in the forum. I will sit down this weekend between football and order the drivers. Will try to start posting the build within a week or so.
So, still no pics nor measurements nor whether or not you sell your speakers (if there actually are any, which is seriously in doubt). Just more blather.
*********
We are inclusive and diverse, but dissent will not be tolerated.
Wow Inmate51 you are more impatient than my wife. A speaker build is much more comprehensive than measurements. So that is what I am doing.
And I'm taking my time and enjoying this. I'm always building speakers that other people want. This build is for myself and this past week I have spent what little free time I have doing some research. I haven't had a chance to do that in a while and I'm still undecided on what exactly I'm going to build. I did however get the chance to go through some stuff I had here at my house a bunch of 4" ports that I have no idea why I have so many. And some waveguides and more importantly a nice stash of Jantzen p-core & air core inductors and Capacitors and some 15" drivers with high QTS perfect for an open baffle build.
However, I can't find a stash of 1" exit compression drivers and a couple boxes full of Mills resistors and more inductors & capacitors. Maybe I will look in the closet in my guest room tonight. I have too much crap from collectables to vintage speaker drivers and boxes and boxes of speaker literature dating from the 1930's to the 1980's that is all online now, so I have no idea why I am even keeping it. This week I will look in my storage and shop I may have some drivers I can use in these builds that I have forgotten about.
So, I was thinking about an idea I had for a slot loaded open baffle different from Nelson Pass version. I also have had an idea for a direct reflecting speaker I have wanted to build for 10+ years, also a transmission line speaker would be cool to build again. I have not done one for years. I thought I had narrowed it down last week to two builds then started doing some research and fell down the speaker design rabbit hole and have not escaped since. Basically, there are so many options, and deciding on what to build has me stumped right now. It's like trying to find something to watch on net flix every time you think you found something you keep searching only to find more to watch.
So don't be impatient. The build will happen start to finish once I decide exactly what I am building.
Ps You should not doubt anybody's ability. Remember just because you cannot design and build speakers does not mean that I can't or anyone else can't. Honestly it is very telling of your own inability's. So, I hope you do not intend to keep up this childish prattle because it is only going to make you look more desperate to be right and continuing any further with this type of behavior is going to lead me to believe you could be a narcissist.
I thought you'd have measurements and pics of finished designs. No worries, carry on.
*********
We are inclusive and diverse, but dissent will not be tolerated.
Edits: 01/13/25
Let me ask you a serious question do not sidestep the question just simply answer the question to the best of your ability,
What type of measurement's do you want to see?
I always like to learn about about new or better designs, of anything. Especially speakers.
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