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In Reply to: RE: Back to the Planar posted by CraigS720 on August 16, 2015 at 19:54:10
Craig,
My brother ran RS1Bs replacing Magnepan 3.6s. It took him a long time and 10s of thousands of dollars to get the Infinities to surpass his 3.6s. He was a very advanced audiophile and he was working very hard to get the RS1Bs to open up and bloom. In the end he was very pleased with his Infinity set-up.
Magnepan 20s are a big step up from the 3.6s. I think they will do the job. Yes, your room is toward the small size but if you can place the Maggies on the long wall, tweeters in, and pull them out as much as you can, I think you will have a good chance of getting the sound you have been missing.
You don't really need it but the RS1B woofer tower can blend with the Maggies for the very low end (I still own two pairs and I have no plans to get rid of them).
Follow Ups:
Answer to russ69....
You said that Your friend spent 10s of thousands of dollars so make the Infinity RS1b to sound like the MG3.6.Oh boy didn't he spent bad money.
The RS1b is in whole other league regarding sound reproduction in most of our frequency spectrum to hear.
The RS1b outclasses the MG3.6 in every way.
How didn't he come to even hear that, or had he become so familiar to the sound of the MG3.6 that he thought that THAT was the right sound?I mean for Christ sake, I have had these side by side!
I sold the MG3.6 due to lack of dynamics and lack in coherence.In any case, I have the RS1b's EMIM membranes changed to ribbons now so the lend-over to the towers at 150Hz is not an issue anymore as the original had.
In any case... RS1b vs MG3.6? Seriously!?
The one who succeeded was the one who didn't know it was impossible.
Edits: 08/29/15
I don't think that is what he was implying. I think that he was talking about how long and how much investment it took for the guy to fine tune his room and system to match the RS 1b as well and ultimately better than the mg3.6.
He was not referring to there being an advantage to the 3.6.
What did you end up using to substitute for the EMIMs, is it a commercial driver? Are still using the original or rebuilt EMITs?
I see.
Then I just misinterpreted the text. :)
Regarding the original EMIM's they are very constricted due to them being a membrane design and are supposed to lend over the sound reproduction to the bass towers at 150Hz.
The system just sound wrong without the right "body" in the sound.
And this due to the lack of output around 150Hz.
So I made the decision to replace all 14 of the EMIM membranes with ribbons made by Apogee Acoustics. (They are made specifically for the EMIM).
Now the RS1b is transformed to a full blood.
Thanks anyway for the correction of my misinterpretation of his post!
The one who succeeded was the one who didn't know it was impossible.
Yes, my brother had the Graz ribbons I believe.
It's a really good upgrade.
The one who succeeded was the one who didn't know it was impossible.
So Graz' Apogee from Austalia make those EMIM unit substitutes or did you retrofit the old ones with a rebuild kit from them?
I am assuming you are talking about these:
http://www.apogeeacoustics.com/oldforum/008160.html
Are they still about $250 each?
Yes, Graz' Apogee made those ribbon units to replace the membrane unit that is sandwiched between the pole pieces.
The pole pieces are the original.
The price for ribbons to retrofit is as follows and copied from Apogee Acoustics forum webpage:
2-5 units = $235USD/unit
6-9 units = $230/unit
10 units or more $225/unit
As of 1st October 2014
The one who succeeded was the one who didn't know it was impossible.
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