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Duelund/Mundorf Ultra Loudspeaker Purifiers

I have been eying the Duelund/Mundorf Ultra Loudspeaker Purifiers that Audioman58 have been advertising and knew based upon the forums I have been following for years that he was quite knowledgeable on capacitor typologies.

So, I took the plunge and ordered these and they arrived in 3 days to my SW state! I knew from experience that they will need over 200+ hours just to hear a glimpse of what these Duelunds are capable of but they didn’t disappoint right out of a cold box. I immediately heard more clarity, a deeper soundstage with better separation and a much lower floor noise…

These purifiers have been burning in 24/7 in my secondary system for nearly 2 weeks now and are really starting to open up. I listened to these purifiers last night in my primary system with just over 200 hours and the change was quite remarkable; musicality, tighter image focus, much better decay and note sustainment, unbelievable airy and spacious 3D sound, more vibrant and engaging sound with clarity being the standout.

These purifiers work as Audioman58 described and I’m still shaking my head on the beauty I’m hearing in my system and would Highly recommend this amazing product….

Wig😁

128x128wig
wig's avatar
wig OP
1,210 posts
 

Get with @ audioman58 for compatibility concerns with crossover less full range speakers.

Wig

yzfr1mike's avatar
yzfr1mike
13 posts
 

Are purifiers beneficial on Magneplanar speakers, and has anyone tried this on MG20's? I have rebuilt/replaced the stock internal crossover components with Janzen silver and Audine copperfoil capacitors with Dueland 14 Ga air core copper foil inductors. There are Mundorf 0.01 MFD Silver foil bypass caps in parallel with the Janzen Caps. After a lengthy break in the speakers sound much improved. Will these purifiers help more?

Thanks!

bigwave1's avatar
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bigwave1
223 posts
 

Right out of the box using a 1970’s Akai receiver for breakin, holography plus what wig said. Head shaking not mandatory but unavoidable. They will not be going back. Thank you Audioman58.  

tonywinga's avatar
tonywinga
844 posts
 

I received my purifiers from Audioman58 last week.  I thought I would try them out since my amps plug directly into the wall.  I have dedicated circuits for my amps and the front end but the front end components are supplied power through a Niagara 5000 conditioner.  My thinking was that some filtering on the amp/speaker side might be beneficial.  I have 100 hours now on these purifiers that Audioman58 designed for my 4 Ohm Thiel CS6 speakers that I am using with Pass Labs mono amps.  

After doing a 72 hour break in on my old HT receiver I put them into my stereo system and let them play for another 15 hours or so.  They are still changing but I have made some conclusions.  I hear a smoother sound.  I don't necessarily hear a bigger soundstage but there is a bit more air to instruments.  Af first the smoother sound seemed almost blah.  But the next day the sound was better.  Whatever these purifiers do, I found that I had to reposition my speakers.  After two 1/4" speaker position adjustments the soundstage came back into focus and the clarity was back.  The other notable difference is no more ear fatigue when listening at high volumes.  All gone.  I don't hear a change in the highs but I wonder if these filter out some high frequency energy that I don't necessarily here but still has an impact.

I wasn't sure at first but now these purifiers are growing on me.

 

cporada
36 posts
 

So, if I understand correctly, these have to be built specifically for your given amp/speaker combo to have the appropriate values for the resistor and capacitor?

With that said, has anyone tried them on Green Mountain Audio speakers?

Thanks,

Chris

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