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Old 22nd December 2012, 05:45 PM   #51
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Default Still Crazy

So if we're concerned about the validity of the modeling, a path forward might be to retain the basic X-over design and simply substitute better quality caps and resistors with the expectation that "harshness" and spatiallity focus would improve. This has certainly been reported with this type of mods to Polks & Def Tech which are in a similar price/ market as the M.A. S6/RS6 and had similar upgrade goals. By the way, what is the difference between the two?(S6,RS6) I've been assuming, good for one would apply to both.

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Old 22nd December 2012, 08:38 PM   #52
system7 is offline system7  United Kingdom
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@dunenthem. I'm not AT ALL concerned about the accuracy of the modelling. Within certain limitations, I found it worked EXACTLY, as shown below!

As it goes, Monitor Audio have employed decent components. What they have done is cut down the number, which we might rectify.

Originally Posted by Dissi View Post
Sorry, no. The driver parameters are completely unknown. I don't think it's correct to assume Visaton AL130 and DSM25 would be similar. Obviously drivers and/or crossover of S6 and RS6 are also different.

In the case of the S6, an elliptic filter might give more spl in the upper midrange and suppress the cone break-up as well. But it's impossible to design the filter without having any driver data.
Dissi, don't take this too hard, but most people wouldn't know an elliptic filter if it slapped them in the face, although it happens I do know what one is. Please do not employ such vague audio-gibberish. Leave that to Zaph...

We are living in the real world. It IS possible to modify a crossover VERY PREDICTABLY with enough insight into filters and metal drivers. Naturally there is an element of trial and error here AND reporting back with the results. But I have, I hope, addressed the three main criticisms of the listening experience. I have also been quite conservative in changes and reused components as much as possible. Time will tell.
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File Type: jpg RS6_FreqResp.JPG (114.1 KB, 102 views)
Best Regards from Steve Ponsford in Portsmouth, UK.
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Old 31st August 2015, 11:48 AM   #53
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Thumbs up conferm 22 ohm parallel to tweeter rs6

Originally Posted by PALUSE View Post

Hi Rob.
Thanks for the reply!
Sorry to ask again... you put a 22Ohms resistor in parallel with the tweeter?
It will stress the amplifier, because it lowers the impedance of the HF network (X_over). Its more polite for the amplifier to put the resistor in serial with the tweeter, to attenuate the signal amplitude (Voltage)!

Best regards


i did the 22 ohm parallel to the tweeter mod and can confirm this worked very very well actually! i used a 10 watt resister of 22 ohm. and fits perfectly. The sound is so much better now, also the bass is more deep. dont know why. maybe only because there is less high, i dont know but the speakers are kicking *** so much now! good luck everybody with the RS6.
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