Those multi cells for Dietmar were made by Markus klug
I am quite fond of TQWT bass loading...something like the Horning Eufrodite with a bunch of woofers loading a TQWT and a high sensitiivity mid/bass and then a horn (Horning uses a paper cone tweeter...I would use a horn from about 600-800 Hz).I'll tell you how I would build a horn speaker.
High : JBL 075 in a Jbl 2404 horn from 3khz-19khz
Mid : Electrovoice DH1A in a Altec 1505 Horn(Wood ) 450Hz -3khz
Bass: Altec 515b 8G in a Onken 27Hz-450Hz
Xover all drivers 18dB Slope some L-Pad for high and Mid
You get 102db/ 1Watt from 27hz to 19 Khz
after that you will only smile at people who buy modern speakers
Such bass arrays have a nice quick response behavior and are often used in electrostatic loudspeakers. main reason keeping distortions low is a good idea. the jbl is great because it plays without a sound pressure drop up to the upper limit frequency of 21.5khz -2dB
Multicell or 2404 i would try both i liked that very much.
Supravox works in a cessaro wagner perfect extremely light membrane 6 grams..good choice
What you mean a 8 inch membrane weighing 6 grams ??Sorry 8" mass 6 grams
Yes, Wagner and Beta with tron tube pre and telstar 211 set amp.Have you heard the Wagner
Are those the Tesla woofers? They play to 7khz? wow...Not trying to start a pissing contest, I'd advocate using the JBL 075 from a higher frequency, and foregoing any other filter by using full range woofers in a front loaded horn.
I'm using JBL2402 with sine cap filter from approx 7Khz in the prototype below. (taken during the build)
big horns are good, i had not the space build this. I really wanted to work with Ev DH 1 so I pushed the 075 to the limit
In a backloaded horn like Wagener works no little speakerAccording to them a 9 inch FR unit weighs 8,1 grams , that is indeed very light ( if its true ) usually the trade off would be reduced stiffness ,certainly with a 9 inch unit , its hard to believe that unit is able to act pistonic .
Probably natural but weak bass , no real impact
freq reponse aint that bad for a fullrange unit , except for the top end
View attachment 84347
Height | 132 cm |
Width | 36 cm |
Depth | 78 cm |
Total Weight | 110 kg per unit |
Tone tubby are real good woofers 12" with a little notch 3 - 5khzThose are indeed the Tesla's , they go up to 6-ish K and then drop off while the JBL come in and are full on at ~7K.
Great units IMO, similar to KL405 VAC with slightly different forte's but at totally different price levels
Tesla 15 aro932 right?dunno, with an Fs of 107 Hz things do not bode well IMO, besides I'm fully stocked on Tesla's.
Did you ever hear a Klangfilm speaker using KL405 (AlNiCo)? The Tesla's (AlNiCo) come very close, I somehow do not expect those PA speakers to come anywhere near fullrange for much else than a Guitar, but I've never heard them.