I, too, cannot hear any difference, and I used very good headphones, if I do say so myself.
My guess is the audio compression used by Youtube is masking the difference. Only @nandappe can say what he hears sitting in front of them.
or.... if he's willing to upload non-compressed recordings we can download and listen to 🤔
I am very interested in the effect of adding magnets to a speaker. A speaker I have been playing with recently is the Monacor sp205/8
This has very small magnet (79g) and a ridiculously high qts (2.7)
Would adding a magnet alter this appreciably?
As it is it can only be used in open baffle, or open back speakers (eg k&t cheap trick 269)
This has very small magnet (79g) and a ridiculously high qts (2.7)
Would adding a magnet alter this appreciably?
As it is it can only be used in open baffle, or open back speakers (eg k&t cheap trick 269)
I can't measure the Qts so I don't know how much it changes, but SB10PGC21-4 and BG20 have a clear effect.
Some drivers may or may not benefit from the additional magnets, so it is hard to tell without trying.
Added magnet results: No magnet-qts-1.029, qes-1.132, zmax-37.1ohms
2 magnets-qts-.9183, qes-1, zmax-42.3ohms
3 magnets-qts-.8634, qes-.9352, zmax-45ohms
4 magnets-qts-.8128, qes-.876, zmax-47.9ohms
Magnets were 32mm X 2mm from Amazon, tested on my Dayton WT3. No listening impressions yet.
Larry
2 magnets-qts-.9183, qes-1, zmax-42.3ohms
3 magnets-qts-.8634, qes-.9352, zmax-45ohms
4 magnets-qts-.8128, qes-.876, zmax-47.9ohms
Magnets were 32mm X 2mm from Amazon, tested on my Dayton WT3. No listening impressions yet.
Larry
Thank you for the measurement when you added the magnet.
I can confirm the difference by hearing, but it changes quite a bit by measurement as well.
By the way, I have tried from one to three 30φx2mm magnets, but two of them were well-balanced in my auditory sense.
Had a chance to listen to my Tabaq's with SB10's and added magnets (2). I know these speakers well, been listening to them for a year and a half. The improvement was not subtle, I was pleasantly surprised! Dynamic contrast was better, bass was tighter, overall smoothness seemed better, just a better presentation overall. I would recommend this easy mod to anyone using this driver!
Larry
Larry
No real surprise there, since you've dropped driver Q / increased its damping (and thereby that of the overall system alignment), which given the high starting point will certainly make the bass sound a little 'tighter' & reduce ringing.
Nice work.
The grain of the wood is beautiful.
There's no peak at 4 kHz in either the manufacturer's published or measured values.
Attachments
that's because there is absolutely no distortion is plotted on your graphs. Only FR and impedance from SBA.
Here it is...
