Banner
Banner
cookie-banner
Article Index
Usher Dancer Mini Two
Sound quality
Conclusion
Measured performance
All Pages

MEASURED PERFORMANCE
Frequency response of the Dancer Mini-Two measured flat right across the audio band, our pink noise analysis shows. Although forward output from the bass units falls away below 50Hz, like most ported loudspeakers, the port takes over and provides strong output down to 20Hz, the red trace of port output shows. Port output is broad so it damps the bass units well and this reflects back into the impedance curve, keeping the residual peaks small. All of which suggests strong bass of good quality, and likely firm subsonics.  
    

Integration between the twin bass/midrange units and the Diamond tweeter was good with just the slightest dip at 4kHz revealing the high crossover frequency. This means the bass/mids cover a very wide frequency range but a 200mS decay analysis showed low levels of coloration generally, if an overhang at 3kHz likely from the dust caps. The tweeter in particular looks very clean in output and Usher have pushed resonance up to 19kHz – higher than that of rivals; the small lift at 10kHz is not due to resonance our decay analysis showed.
    

Phase matching of the D’Appolito arrangement was vertically consistent as expected; moving the measuring microphone up and down showed little change. Lateral dispersion was wide too so the Mini-Two will sound the same wherever it is heard.
    

Sensitivity was high at 89dB Sound Pressure Level from one nominal Watt of input (2.84V), if not as high as some large floor standers. A 4 Ohm bass unit has been used and so the impedance curve dips down to 4 Ohm minima. Overall measured impedance was 6.5 Ohms, so this is nominally a 6 Ohm loudspeaker. There is some reactance in the midband that a Zobel network might usefully have cured but otherwise the Mini-Two is a fairly easy load, but it will draw LF current, like many modern loudspeakers so needs a robust amplifier.
    

The Mini-Two gets a lot from its two-way drive unit arrangement. The bass/mids run high and the Diamond tweeter’s layered construction pushes resonance out to 19kHz; other Diamond tweeters resonate at 15kHz, giving artificially enhanced treble. The Usher tweeter avoids this effect. The Mini-Two has very wide bandwidth as a result and should deliver a smooth, clean and accurate sound in use. NK

 

 

FREQUENCY RESPONSE (what it means)


IMPEDANCE (what it means)

 

 

DECAY SPECTRUM 200mS (what it means)

DECAY MAP 200mS (what it means)


 



 
Comments (4)
Mini Dancer II DMD performance
4Friday, 05 April 2013 02:42
Mike Pearson
Hi,

An interesting review and subsequent comments. I have the same speakers but I do not suffer the bass boom at all, just a good extended bass? Probably room size and acoustics make a difference?

I also have the Usher factory graphs for the Mini Dancer II DMD speakers and whilst not exactly the same as those shown in the review, they are fairly similar. Impedance and decay spectrum being slightly different
Foam Port Plugs Installed!
3Tuesday, 15 January 2013 16:19
MBRosenberg
As you suggested, I half filled the ports with rolled up acoustic foam and immediately heard the difference: tighter bass with no noticeable loss of low end response in my 24ft square listening room.

Sure did help; thanks from across the pond!

You're more than welcome. It's a gloriously simple way to fine tune any reflex loudspeaker. The only other (more expensive) trick is to fill the room with big, deep settees. Most cushions are foam filled and absorb bass energy, damping down room boom.You get a lovely comfortable lounge that sounds great too! NK
Mini Dancer 2
2Wednesday, 14 November 2012 11:36
Paul
I run my pair with a high quality medium powered tube amp with great results. I have owned mine for about a year now and they keep on improving. Though it took me some time to get used to the diamond tweeters as I have always used soft domes with the speakers that I have owned.

Hi Paul, that sounds interesting. You should tell us more about how you found them, especially the unique tweeter. It is intensely detailed, I find, and makes the speaker very 'fast' too. It takes no prisoners though.

There is a big issue in running in loudspeakers. B&W say 20 hours for their Kevlar cones but they actually need at least 120 hours before they start to sing. Usher get it right and state 180 hours; at 2 hours a night every night that is 3 months! The longest claimed run-in is for Tannoy Westminsters, a major dealer claiming they need 9 months for the woods to settle. It sounds like your Ushers are steadily getting better.
Foam Port Plugs?
1Monday, 12 November 2012 20:51
MBRosenberg
I am a USA owner of these loudpeakers, and note that the December issue of The Absolute Sound gives a similarly rave review...and also suggests the need to tighten the low bass.

Query, then: Exactly what did you do to plug the ports: material, dimensions, etc?


We half filled the port with acoustic foam. It was a 3cm slab of foam rolled up into a tube and put into the port. This narrows the port and provides some acoustic resistance. If that is insufficient then the port can be filled completely. You will hear the difference. You can get acoustic foam for the port from Studio Spares or similar operations in the USA.

If your room booms try and put in the largest volume of acoustic foam possible. Big foam-filled settees are good. Studio Spares sell foam bass traps but you need a lot of them in big volume to absorb bass energy. In the Feb issue we will be looking at room equalisation, which also helps suppress the sort of resonant modes that heavy bass form a big loudspeaker can excite.
I hope this helps.

best regards

Add your comment

Your name:
Subject:
Comment:
  The word for verification. Lowercase letters only with no spaces.
Word verification:

Search

Hi-Fi World, Powered by Joomla!; Hosted by Joomla Wired.