Shhh! - Secret super speaker!!

[kfbkfb]

My Pioneer CS-G103 speaker owners manual (attachment) has a graph of the frequency response and graphs of the 2nd and 3rd harmonic distortion (other speakers I've bought don't have a graph of harmonic distortion), has the distortion of this new ES speaker been graphed?


Kirk Bayne

 

[chucky3042]

My Pioneer CS-G103 speaker owners manual (attachment) has a graph of the frequency response and graphs of the 2nd and 3rd harmonic distortion (other speakers I've bought don't have a graph of harmonic distortion), has the distortion of this new ES speaker been graphed?


Kirk Bayne

Hi Kirk

I have not done the curves yet on this speaker, mainly because I have not built them yet!

I do have other examples of our other speakers curves of inferior stuff years ago:

Here is a distortion plot of the Nakamichi dragon we designed with the lower bass section turned down as far as I could (looking at the electro panel figure). As you can see its around 65 db down or around 0.06% distortion, not to shabby for a speaker:

Here is a 600 mm panel we did around 2007:

As you can see, they are not too shabby. Pity no one knew about us.

 

[gene_stl]

Thank you!

https://www.ti.com/lit/ds/symlink/t...=https%3A%2F%2Fwww.ti.com%2Fproduct%2FTPA3244
View attachment 83753

 

[ar surround]

Yes but i would suggest ditching most of those useless speakers and go to 4 of our soon to be released 4 feet high Y speakers with the Y amp. Thats what i will upgrade my lower lounge to shortly....... And people dont care where they sit!

Hmm...at 4 feet, they will actually be 5 inches shorter than my AR9's. They would have more WAF than the AR9's and those enormous Martin Logans.

 

[gene_stl]

WAF? WAF??? what eez thees WAF????

 

[ar surround]

WAF? WAF??? what eez thees WAF????

WAF = Worthy Area Footprint. No?

 

[par4ken]

I have long been curious about class D amplifiers, wondering how they would sound. Some years ago I was thinking of taking an old receiver with a blown amplifier and replacing the amp with one of the class D amplifier boards available cheaply on eBay. My concern was that the amplifier might cause interference to the AM radio. Now with no local AM and distant stations only receivable in the car possible interface is not too much of a concern, but still wondering?

 

[DuncanS]

WAF? WAF??? what eez thees WAF????

WAF = Worthy Area Footprint. No?

Wife Aggravating Forecast?

 

[chucky3042]

Happy Ho Ho

I have had a bit of time over our Australia extended Christmas/ new year period to catch up on the layout of the electronics board of each monster super electrostatic speaker. We cannot start the mechanical design until this is finalized and I just positioned all the stuff on it today!

This will form the base of the see through speaker. You will see two green lumps and a purple cross hatch lumps at the bottom of the boards and these are the whooping big transformers. The smaller of the green squares is about the size of my large fist.

And for shits and giggles I have attached a copy of the schematic pdf - not showing the 3 big transformers and missing 3 leds showing soft clip on each of the 3 x 450 W class D amplifiers (picking the right LEDS!). I figure if you can copy this - good effort!

Enjoy

 

[chucky3042]

Hi Gurus

Its been a hell of a day.....I will post about it tomorrow.

BUT

Just to show we never give up the PCB is finally designed and actually in production getting made, see below:

Its A 4 Layer 2 OZ copper
To show the complexity I will zoom into a TINY little section below:

Hey my charming 70 year old wife just found this picture yesterday of our previous best speaker designed 27 years ago (judging by my 3 year old daughter hiding behind the "cute" little Max"- he was a blond then). My wife was 43. The speaker was a 5 way electrostatic around 5 feet 10 I think with dual 10 inch woofers below 150 Hz. It had a narrow sweet spot but incredible imaging, to this day my best surround sound experience was watching "groundhog day" in the street carnival scene with just stereo of these two big brutes.

As hard as you stared at the speakers you could never imagine any sound was coming out of these monsters. They were totally transparent.

They were stolen in the dismantling of Immersion PLC to become an oil company! believe it or not by the secretary of our then useless CEO.

 

[chucky3042]

Hi Gurus

Its been a hell of a day.....I will post about it tomorrow.

BUT

Just to show we never give up the PCB is finally designed and actually in production getting made, see below:

View attachment 105710

Its A 4 Layer 2 OZ copper
To show the complexity I will zoom into a TINY little section below:

View attachment 105711

Hey my charming 70 year old wife just found this picture yesterday of our previous best speaker designed 27 years ago (judging by my 3 year old daughter hiding behind the "cute" little Max"- he was a blond then). My wife was 43. The speaker was a 5 way electrostatic around 5 feet 10 I think with dual 10 inch woofers below 150 Hz. It had a narrow sweet spot but incredible imaging, to this day my best surround sound experience was watching "groundhog day" in the street carnival scene with just stereo of these two big brutes.

View attachment 105712

As hard as you stared at the speakers you could never imagine any sound was coming out of these monsters. They were totally transparent.

They were stolen in the dismantling of Immersion PLC to become an oil company! believe it or not by the secretary of our then useless CEO.

And the woofers were arranged in an infinite baffle 70 litre bipole!

 

[chucky3042]

We could do a similar advertisement today but it would not be PC and the girls would have nose piercings, tattoos (sorry Dave) , big Kim Kardashian arse's and pumped up lips.

 

[Sonik Wiz]

We could do a similar advertisement today but it would not be PC and the girls would have nose piercings, tattoos (sorry Dave) , big Kim Kardashian arse's and pumped up lips.

View attachment 105801

Those legs would certainly make me move up to... I dunno. What kinda disc is the one on the right holding? Did I say disc?

 

[chucky3042]

As you guys know all girls are immediately turned on by expensive hifi systems!

 

[ar surround]

Oh, that photo brings back memories. I had that buyer's guide. That was about the extent of what I could afford in quad at the time, but I eventually pieced together a system.

 

[chucky3042]

Oh, that photo brings back memories. I had that buyer's guide. That was about the extent of what I could afford in quad at the time, but I eventually pieced together a system.

My first was the Left minus right subtract on a set of JVC Quadraphonic headphones (that did not work)