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Infinity RS1b Crossovers

A

aboroth00

Member
I have a couple questions about the external and internal crossovers on the RS-1B. The EMIT is crossed at 8khz and the lower EMIT is crossed at 3khz, while the EMIM is crossed at 700hz and the towers take over <700hz? or the EMIM's also take it down to 125hz where the next XO point is.

Is the external XO necessary for the mid/treb tower? Isn't there passive crossovers in the treb/mid tower to filter out the lower freqs? I keep hearing the external XO is not up to par with the rest of the system so hopefully removing the external XO if it doesn't do any harm would improve the system.

Has anyone experimented using a different crossover on the bass tower?
 
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YES! you need it. dont run without it. I run a dbx on my rs1. To me it is better than the infinity. but that is just my ears.
 
I've read on other forums that the passive XO's in the med/treb towers will filter out the lower freqs and the xo module is mainly for integrating it with the bass tower.

So are you saying the XO module has the XO for the Emims? I wouldn't thought the EMIM's would have their own XO to filter out the lower frequences. Which XO point is for the EMIM's?
 
the external crossover provides an additional [frequency-selectable] 6dB/octave filter for the mid/hi panels, which is necessary for the safety of the EMIMs. it's passive, which means it is minimally intrusive on the sound. putting in another external crossover like a dBx will work, but it will mess a bit with the intended driver integration unless the slope of that crossover is also 6dB/octave. and you may find that an active crossover sounds less transparent.

as far as the woofers go, the external crossover plays an important role by adjusting the level of the low-pass signal depending on the measured woofer impedance. no other crossover will have the feature, so the bass not go as deep and be as flat, unless you also employ a special bass-boosting circuit like the Marchand Bassis.
 
Ahh gotcha. As for my other question, the XO's are 125, 700,3000,8000. However there are only 4 sets of different drivers. The EMIT runs from 3000-8000, the higher emit runs from <8000, the EMIMs cover 700-3000, but what covers the 125-700 range?
 
Thanks! Has anyone tried to use a separate active subwoofer with the RS1B's? The bass towers are great and all but they're not exactly up to date. Bass response measured in my room usually suffers off the ground and is enhanced being nearer to the floor or ceiling.
 
i have posted about this myself, though i'm not sure if anyone has actually tried it. my experience is that the mid/hi panels of the RS1b are one of the very best products Infinity ever produced. they image better and play a bit louder than the IRS Gammas, although the Gammas might sound a touch more natural (especially in the midbass).

at any rate, the woofers aren't up to the same level as the panels. you'd need something that's comfortable playing up to ~150-200Hz. one thing you could do is purchase a pair of SWS-212 servo-powered subs, as they are reputed to be very nice and they would match well cosmetically.
 
cdfac said:
i have posted about this myself, though i'm not sure if anyone has actually tried it. my experience is that the mid/hi panels of the RS1b are one of the very best products Infinity ever produced. they image better and play a bit louder than the IRS Gammas, although the Gammas might sound a touch more natural (especially in the midbass).

at any rate, the woofers aren't up to the same level as the panels. you'd need something that's comfortable playing up to ~150-200Hz. one thing you could do is purchase a pair of SWS-212 servo-powered subs, as they are reputed to be very nice and they would match well cosmetically.
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I'd agree with you, the bass stacks aren't up to par.

Those servo subs are pretty rare these days and while they match aesthetically but I feel they're not up to par with the subs today in clarity. I'm sure I won't have too hard of a chore of EQing a pair of other subs with the RS1B. I was just wondering whether anyone else explored this option.
 
I have run vandersteen and velodine sub,s with my RS 1. the vandersteen look,s like it was made for the infinitys. But the velodine has way more thump. they both help. The DBX Xover helps a bunch to get better bass also.
 
I took the active crossover out of my 1B's and replaced it with a DBX. I am quite satisfied. It is much more capable of controlling levels between the mids and bass towers, and has much more flexibility. I am terrified of using the Infinity crossover because of the very real possibility that you can blow your amps due to the really crappy way Infinity put the connections so close to one another. If someone would modify the original Infinity crossover case so that the ergonomics would work better, I might try it again.
 
Hi,

the rs1 "system" is a voted system with the original frequency-crossover and should not become through other XO replaced! Whoever does this subordinates the developers of Infinity " incompetence "! Is that truly so? I think no!

The external XO is not only a simple Xo but also a servosystem with integrated Equalizer. The bass poweramp is a component of this servosystem. His vote can replace no other system. Therefore it is also so important that the cable-connection is made absolutely correct. The manual helps read with it very well.

As reward, you receive an incredibly good sound, that is not so easily to top. All chasses and their qualities have the best advantages physically.

Then, you need no other XO's or Subs. That would be warped money out.

Klaus
 
As a side note.
I think there are too many people out there who rather look into other equipment before they even have worked with the correct speaker placement.

Speaker placement is extremely important and will in general give more of a change then any change in gear.

Cheers!
 
Jarre said:
As a side note.
I think there are too many people out there who rather look into other equipment before they even have worked with the correct speaker placement.

Speaker placement is extremely important and will in general give more of a change then any change in gear.

Cheers!
Click to expand...

I agree that speaker placement and room treatment are very important and I also agree that many audio equipment can do better with better spacing of the terminals.

I use a piece of wood molding to prevent terminals to get too close to each other - especially with those heavy hanging cables.
 

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Hi all,

I solved my SCU connections as you can see on the picture....

weiche-polklemmen-nach.jpg


Klaus
 
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