Category: ‘Blog’

SB Acoustics SB17NRXC35-8 Measurements!

September 22, 2017 Posted by gornir


It has been a while since the last published driver measurements, but here we have the low distorting and high performing driver SB17NRXC35-8 mid-woofer from SBAcoustics.

For further details see:

SB Acoustics SB17NRXC35-8.

AudioExcite in cooperation with HULGICH AUDIO!

June 10, 2017 Posted by gornir


I’m proud to present the AudioExcite Loudspeaker Design cooperation with HULGICH AUDIO!

It all started about three years ago when I met Nicholas Hulgich, the founder and owner of HULGICH AUDIO and he contacted me for some technical questions regarding a specific loudspeaker design.

Nick, his nickname in Australia is a great guy and he has over the years become my dear friend and we both share similar compassion for music and of course the interest in great sounding loudspeakers.

Nick is born and raised in Argentina where he has a background as an industrial designer. He emigrated with his wife to Australia in 2005. Nick and his HULGICH AUDIO team are based in Adelaide, South Australia.

Ok, where does AudioExcite Loudspeaker Design fit in to all this?

I helped Nick with some loudspeaker designs as we both have a mutual understanding of how a loudspeaker should perform and sound.

I guess I proved my technical skills too Nick, because he suddenly told me he’s going to start a new loudspeaker brand in Australia and asked me if could be his technical Consultant in this endeavor and great adventure.

At first I must say I was a bit hesitant and I actually told Nick to think twice before going on, since I know how tough this branch is.

I’ve seen many brands come and go over the years, but if anyone is going to succeed, it’s Nick – So I told him that this is also a dream of mine and I’m going to help you!

Now about two years later HULGICH AUDIO is ready to conquer the world with its remarkable loudspeakers.

It’s seldom you see such strength and determination in a person, but Nicks got it and in only about two years of development he’s got a first review on the top of the line loudspeaker Astor in Australia’s largest Hifi magazine stereonet.

stereonet is in fact is the fourth largest on-line Hifi magazine in the world! – Not a bad feat in such a short time.

Both Nick and I are very proud of the warm reception and the good review the Astor got in stereonet and I end here and say…..

Congratulations Nick – You made it!

The review of the HULGICH AUDIO Astor can be found here: stereonet Astor Review!

More details about the HULGICH AUDIO loudspeakers can be found here: HULGICH AUDIO Loudspeakers.


Stay tuned…. There are more loudspeaker models to come!


AudioExcite Loudspeaker Design




Fountek NeoCD1.0 Measurements!

June 7, 2017 Posted by gornir

The Fountek NeoCD1.0 is a small low priced ribbon tweeter with an extended frequency response.

As many small sized ribbons the distortion profile is rather high, but if the cross-over frequency and filter topology is carefully chosen, the NeoCD1.0 is a nice sounding affordable ribbon tweeter.

For detailed measurements see: Fountek NeoCD1.0

Kensho Two – M3 Construction Released!

April 1, 2017 Posted by gornir


The Kensho Two – M3

“Kensho” is Japanese for “seeing nature.” It means seeing one’s true nature; perceiving the self, but can also in Zen Buddhism mean “a brief experience of enlightenment”.

This loudspeaker is a small 2-way using a 5” mid-woofer and a 1″ coated textile dome tweeter in a 11 liter enclosure.

This low distorting and moderate priced loudspeaker performs very well and it delivers a generous soundstage with an extended high frequency response and a powerful bass response.

For details see:

Kensho Two – M3



Hifi Show Report!

March 2, 2017 Posted by gornir


Hi everyone,

Here are some pictures and comments from the HighEnd Hifi show I visited 18-19th of February 2017 here in Stockholm, Sweden.

Stockholm HighEnd 2017

Bowers & Wilkins 685 Review Part 4

January 13, 2017 Posted by gornir

This is the fourth and final review part. It contains four different Mod suggestions. The simplest one is only a tweeter level adjustment and the most complex one is a completely different cross-over.

The Mods gives you a more neutral and balanced sound compared to the original B&W 685 loudspeaker.

Follow the link in order to read the fourth review part:

Bowers & Wilkins 685 review part 4

Happy DIY!




Bowers & Wilkins 685 review part 3

December 30, 2016 Posted by gornir

The third review part shows the T/S parameters, impedance, frequency and distortion measurements of the tweeter and mid-woofer used in the B&W 685 loudspeaker as well as an analysis of the cross-over used in the loudspeaker.

Follow the link in order to read the third review part:

Bowers & Wilkins 685 review part 3



Bowers & Wilkins 685 review part 2

December 18, 2016 Posted by gornir


In the second review part I show the impedance, frequency and distortion measurements of the B&W 685 loudspeaker.

Follow the link in order to read the second review part:

Bowers & Wilkins 685 review part 2



Bowers & Wilkins 685 review part 1

December 11, 2016 Posted by gornir

This is the first part of a multi part review of the Bowers & Wilkins 685 stand-mount loudspeaker from the fourth generation of the famous 600 series.

In the first review part I describe the B&W 685 loudspeaker and it’s cabinet construction and give some initial listening impressions.

In later review parts, I will show frequency, impedance and distortion measurements of the B&W 685, but also the same for the individual tweeter and mid-woofer drivers.

I will also do some cross-over simulations and hopefully give some modification tips in order to improve the sound quality of this loudspeaker.

Follow the link in order to read the first review part:

Bowers & Wilkins 685 review part 1



SB Acoustics SB29RDC vs. Satori TW29R-B

December 7, 2016 Posted by gornir


What are the similarities and differences the between the SB Acoustics SB29RDC versus the Satori TW29R-B tweeter?

(click on picture to zoom)

Left: SB29RDC

Right: TW29R-B

For a complete set of measurements see:

SB Acoustics SB29RDC
SB Acoustics “Satori” TW29R-B




Blue: = SB29RDC

Green: = TW29R-B

Both tweeters have the same DC resistance and they have very similar impedance curve in the cross-over region (1.5-3kHz).



Tweeter On-axis (0deg) 1m measurement:

Blue: = SB29RDC

Red: = TW29R-B

Both tweeters have very similar frequency response. The TW29R-B tweeter has a more linear and extended frequency response above 15kHz. This is probably due to the slightly different shape of the face-plate.

(click on picture to zoom)

Left: SB29RDC

Right: TW29R-B

The TW29R-B have a slightly more concave face-plate than the SB29RDC.




(click on picture to zoom)

95dB @ 1m
Left: = SB29RDC
Right: = TW29R-B

Both these tweeters have a low distortion profile, but the TW29R-B is a couple of notches better than the SB29RDC




  • The have identical fabric ring domes.
  • They have the same voice-coil and effective cone area.
  • They have the similar resonance frequency and the same DC resistance.
  • They have the same frequency response up to 15kHz.
  • They have the same sensitivity (92dB @ 2.83v/1m).
  • They have similar impedance in the cross-over region (1.5-3kHz).
  • They have a dual balanced compression chamber.



  • The TW29R-B tweeter costs roughly 2 ½ times more than the SB29RDC tweeter.
  • The TW29R-B frequency response above 15kHz are more linear and extended than the SB29RDC
  • The TW29R-B has lower distortion compared to the SB29RDC tweeter.
  • The TW29R-B has a two part aluminium face-plate with integrated mechanical decoupling, while the SB29RDC face-plate is made of plastic.
  • The face-plate of the TW29R-B is 2mm thicker and the diameter is 0.2mm smaller than the SB29RDC.
  • The TW29R-B has dual copper caps compared to single cap in the SB29RDC resulting in a lower distortion profile.


The question is:

  1. Are they interchangeable with each other in the same loudspeaker design?
  2. Which one has the best overall performance?
  3. Which one has the best price/performance ratio?
  4. Do they sound the same and which one sounds the best?


The answer is:

  1. Probably YES, but minor adjustments might be required for perfection.
  2. The TW29R-B tweeter has a slightly better distortion profile than the SB29RDC, otherwise they are both top performers.
  3. My personal opinion is that the SB29RDC has a better price/performance ratio, due to a significant lower cost.
  4. Sorry, I don’t know! I haven’t yet tested these tweeters in a loudspeaker design. I suspect they have similar sound characteristics.


Both these tweeters are world-class performers. If you want the “top of the line” or something with a premium looks and isn’t cost-sensitive, go for the TW29R-B. If you have a limited budget, go for the SB29RDC.