So shockingly good! $50 only! Grab it now! Sig180-4 ...

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M

Marveloudio

Member
Joined 2004
Hello , cheer up Dayton Audio for this DIY gem :

https://cdn.xingosoftware.com/audioxpress/images/fetch/dpr_2.25,w_300,h_394,c_fit/https://audioxpress.com/assets/upload/images/1/20240228205005_20240228180745-VC-Cover202403--March1.jpg

Measurements by Vance Dickason are way better than expected , the Sig180-4 show no weaknesses!

Am I dreaming ... or some good soul alien must have beamed me into wonderland :)

But wait until the Sig120-4 will be klippelized , I guess some other designers will burst into tears seeing the meas' results!

Future is golden! (in our little DIY universe)
 
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Lojzek

Lojzek

Member
Joined 2012
Good move made by PE!

Will someone help them rephrase the sentence in the brochure?

SIG 180-4.png
 
M

Marveloudio

Member
Joined 2004
Sorry you make a wrong conclusion here , "exellent mechanical damping" is meant to have an influence on the SMOOTH frequency response! (it is in fact exceptional smooth)

Since the coil carrier allows no eddy currents in the 1-turn foil winding it's effect on the LF damping is close to null!

praise the speakerlord above to have mercy on us techsinners :)
 
b_force

b_force

Member
Joined 2004
oneworldconcepts.com/
This is at 94dB, don't get all the fuss to be perfectly honest?

Looks like a pretty standard speaker to me.
H3 is a bit to high at the wrong places.
Measurements line up with the measurements from https://hifi-selbstbau.de/

1710288409288.png


BL is nice an linear (won't show here), but Kms is a total mess;
1710288446676.png

Although a bit deceiving because it's really zoomed in.
(75% of Cms value is well outside this graph)

Displacement limiting numbers calculated by the Klippel
analyzer for the Dayton Audio SIG180-4 was XBl @ 82%
Bl=5.2mm and for XC @ 75%, Cms minimum was 7.4mm,
which means that for the SIG180-4, the Bl was the most
limiting factor at the prescribed distortion level of 10%,
however both numbers exceeded the physical Xmax number.
Click to expand...

The DSA175 cost almost the same amount of money, but has a nicer performance if it comes down to pure midrange I think.
https://audioxpress.com/article/test-bench-dayton-audio-dsa175-designer-series-6-5-woofer

However, the cone excursion is really limited;
The DSA175’s displacement limiting numbers were XBl at 82% Bl = 4.6 mm and for crossover (XC) at 75% Cms minimum was 2.1 mm, which means that for this Dayton home audio driver, the compliance is the most limiting factor for prescribed distortion level of 10%.
Click to expand...

Unfortunate choice why they went for 4 ohm with this SIG180.
I think it would be a very nice speaker in a 3-way system.
 
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