How to integrate ribbon tweeters properly

[Michael Chua]

That can't be help. It's first order after all at 2.5kHz.

The plot below is from my first attempt with my active crossover at 2.6kHz @24dB/oct LR.

On paper, it looks good except for the strange behaviour off H axis.

I intend to investigate this later. I will rotate the ribbon 90 deg and use the H dispersion for the V. I think it will integrate far better.

 

[Michael Chua]

Interesting to me that sibilances reared their head in two very different ways

Looks like both of us are very conscious of sibilance.

Yea part of what shaped my present diaphragm design was sibilance. Nearly every single pleated ribbon Ive heard ( both foil only and plastic carryer types) have issues with this and a unique damping method was necessary to overcome.

I have the Planar (HiVi RT1C), the smaller Heil AMT and this Ribbon CD3.5H and they all sound different.

BTW, do you have any plans to retail your ribbon when it's ready?

 

[lowmass]

not sure if your responding to me their Allen but yes the sibilance I am referring to as often seeing in pleated ribbons is also between 4 and 7 khz,

basic mass / spring resonance of a pleated ribbons rigid width dimension

 

[lowmass]

Looks like both of us are very conscious of sibilance.



I have the Planar (HiVi RT1C), the smaller Heil AMT and this Ribbon CD3.5H and they all sound different.

BTW, do you have any plans to retail your ribbon when it's ready?

The different sound is no suprise, they all have strengths weaknesses fundamental to their basic construct

Yes it will be available through a web site, and actually the ribbon is ready, and the patent mostly written but not fully finished/ submitted. Was about ready to pull trigger but the family was hit with one big event after another sense about last October and I am just recently getting some time back on this.
Anyway its in the works and I think we are seeing the storms clear.

Wish could give ya a date. Suspect it will be a few months at best.

 

[Michael Chua]

Glad to hear your family is alright.

I wish you all the success with your ribbon. It's a massive endeavor you have taken.

 

[lowmass]

Thanks Michael

 

[Michael Chua]

You're welcome.

Keep focused. You're almost there.

 

[eriksquires]

Looks like you are using near field for the mid-woofer.





I suggest you use 1-m measurements, gated. You'll get better in room measurements, and you will have perfect crossover area responses.





Also, use XSim, it's easier.





Best,




E