Bi-amping Infinity RS-2
- Thread starter Willy6
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They can be bi-amped with a few modifications!
stereofanboy
Addicted Member
Which?
I think I recall someone modding a pair of RS-IIs for bi- amping, but it's been a long time since I saw that and I could be misremembering.
If you do it, post a write-up with plenty of pictures and your listening impressions.
Which are not trivial; you're talking about essentially redesigning the crossovers, and also the mounting plates to support two sets of (good, unlike the originals) binding posts, with four stiff, heavy cables plugged into them as there is no way the flimsy factory plates will support that kind of mechanical stress.
That's for the RS-II, and I too recall something about that mod being done in the past. In any event it's doable, and yes:
I’m talking about using an external active 3 way crossover and completely bypassing or removing the original passive crossover’s.
AZDean
Member
When I redid the crossovers in my RS-IIs I split them to allow for biamping. That said, I haven't biamped. I do biwire, but my Parasound HCA-2200ii has plenty of power.
This crossover is pretty complex. The two woofers have different low-pass cutoffs, and then the upper and lower mids have lower upper crossover points than the center mid. Going with a three way crossover will result in a bit more upper bass and more upper mid. Might be hard to get a balanced frequency response.
In addition to the different crossover points for the woofers each one is in it's own chamber with a different volume. The one being low passed at 60HZ is really operating more like a sub-woofer.
I've actually been looking at those active crossovers for a future speaker project. Thinking about using one instead of having to design and build a passive crossover.
I removed the original crossovers and temporarily wired it up to the K-231 to test it out
and it’s sounding awesome already.I still need to make a particleboard back with two sets of speaker jacks installed.
Those are just temporary until I get the back cover madeThey ought to start making rhodium-plated audiophile Wagos
Those wago’s are pretty handy though
Oh I know I use them all the time
How did you adjust the crossover points of the K-231 to match the crossover frequency for all the different crossover points? When I looked into that unit a while back I was under the impression you had to request "chips" that get installed to set the crossover points and changing them required buying different chips. How did you address the different crossover points for the woofers and the different points for the top and bottom mids vs. the center one?
That's my understanding as well. And charging $12 to modify any crossover point doesn't exactly encourage experimentation.
Good point. RS-II are, technically at least, 5-way speakers
I ordered the K-231 with modules for 75hz and 12db slope for my sub and 1600hz with 12db slope for the mids and highs for a set of Paradigm founder 40b speakers so I hooked it up to the RS ll’s like that just to see how it sounds and I’m currently working with the Sublime guy to get me the correct modules that match the RS ll’s frequencies or as close as I can get them for tri amping but this way sounds pretty good.I have my sub connected to the lows the RS ll woofers connected to the mids and the RS ll’s mids and tweeters connected to the highs in a 3 way setup
$12 a module isn’t that expensive to me.
