You didn't get it wrong. It is a corner horn. Built to compete with the Klipshorn, Just because it has side panels doesn't change that. JBL stopped manufacturing them in 1964 because of the success of stereo. Most people could not accommodate a pair with two unused corners.
Rob :)...
TV sound is typically tailored similar to a old phone line. There is no deep bass or highs it's all midrange. So of course certain aspects are going to be highlighted. Music lives in the midrange so sure it can sound good but sure as hell they are not accurate.
I don't use my TV speakers at...
Hello
I understand that typically there are multistrand tinsel leads soldered into eyelets. Compression drivers usually use aluminum VC wire/ribbon. In the photo's I posted it's not tinsel lead but ribbon like the coil. And there were failures using a ribbon. Here is a better picture. Can't say...
I thought some of the older compression drivers routed the VC wire through the tangential surrounds and it was a common failure point? Maybe not?
So what's your objection to aluminum?
Rob :)
That's a good point. I wonder how much of the original design documentation survived? Some of it was patented so that survives. The rest? Maybe someone will chime in and tell us. Yes it would be fun!
Here is an interesting read about the Shearer Horn System with references to John Hilliard...
Ok lets compare date of manufacture say with Western Electric original 1920 and say a repro from 2022. How can you be not sure is 2022 Vintage??
It is a reproduction, it is a hybrid not an original that didn't exist until it's DOM.
Rob :)
Really easy answer to me. Certainly is not vintage, it's not using the same materials or processes. It's a reproduction using modern manufacturing. If it is using different materials it's not even a clone. It's a new driver based on a vintage design.
Rob :)
Ok I understand now.
The idea behind the thread is to discuss Modern vs Vintage. So if you are not going to draw a line how can you constructively discuss the topic at hand if everyone in the discussion has their own definition? Or a vague one with no clear boundries?
I see the same result...
Hello
Where exactly do you see the line?? For me a 2220A is vintage. It uses the original designed magnetic pot structure. When they had the cobalt shortage and switched to ferrite JBL came up with SFG pot structures that had markedly better distortion characteristics. To me everything after...
Hello bonzo75
Ok to say that the JBL Everest 2 doesn't use modern drivers is incorrect. The difference between modernization and using modern drivers is semantics. One is the process the other use of the modernized drivers. You are not addressing the new TAD coax drivers.
There are so many...
What bandwidth are we chasing? It is still the same 20-20K with sub 20Hz for the organ aficionado. There should be no difference between playing Stravinsky's Firebird, Tchaikovsky's 1812. Holst the Planets as opposed to any modern synthetic block buster.
I don't think the move to improve has...
Are you talking about the drivers or implementation. The basic 15" 2 way goes back to the Iconic. To say that drivers have not been modernized is simply not true.
Rob :)
Hello SOT
I don't know back in the late 50's and early 60's when stereo was being born "High Fidelity" was the name of the game. Basically Fidelity to the source and they had their own generation of "demo" records at the time. I don't think things have really changed all that much except maybe...
Agree you shouldn't be changing what is essentially a tool for setting a " House Curve" to adjust for individual recordings. EQ should be set and forget.
You use tone controls for individual recordings
Rob :)
What exactly are you trying to accomplish? Do any of you have measurement capability? The whole idea is to balance the frequency response and shape to a "house curve".
Some of the EQ's have adjustable Q and without some form of measurement you can really see what's going on. You also can't see...
It's a trade off like all things. If you have a tuff room and you can get an improvement why not. It amazes me some preamps have such limited tone controls. You used to get high pass lowpass and shelving tone controls with selectable hinge points.
Certainly not SOTA but I like mine...
I had an experience like that as well. Just finished building a pair of cabinets loaded in the drivers and did a slow sine frequency sweep.
Well horrors! I had a buzz and it took me a while to track it down
I had forgotten to tighten one of the nuts on the speaker terminals. I was loose and...
I think we might need to better define our movements. For example moving left/right and forward and back should have minimal effect. That said if we are talking rotational around the speakers axis its a change in toe in. I can see an angular change having a greater effect as you are shifting the...
1/16 is aprox.062 mils wavelength of 20K is .672 aprox. 11/16
Forget about room modes or timing differences over such short distances.
How does this work??? Careful set-up is important that just seems extreme WRT speaker placement.
Rob :)
Wow that's what you get for 100K!!! There is no excuse for the FR response or the ridiculously low impedance. From Stereophile :
The electrical phase angle (dotted trace) is occasionally high, especially at low frequencies. The equivalent peak dissipation resistance, or EPDR (footnote 1), lies...
My late wife and I had a compromise. She was a pet lover. For every woofer I got she got one, dog. Ended up with 4 dogs 2 cats an iguana and a parrot! My kids loved the zoo and the music.
Rob :)
With in walls I would be concerned about placement, no toe in and if you decide to change the room around you will be patching and cutting new holes. You may also be limited to placement by plumbing, ducts and electrical lines.
Rob :)