Kappa 6.1 Aquisition

Discussion in 'Infinity Loudspeakers' started by TomBig58, Oct 21, 2018.

  1. CDELON

    CDELON Active Member

    Messages:
    160
    Location:
    PA
    Yes, I'm following that thread. I replied that when they are ready to put them on the market, I'll be ready to be a customer.
     

     

    Please register to disable this ad.

  2. CDELON

    CDELON Active Member

    Messages:
    160
    Location:
    PA
    It appears that the RS II have the same mids. If the model numbers are a match, I have no idea. Size , shape, materials and design appear to be the same. I believe mine tested out around 4 ohms. Same as the polydomes.
     
  3. CDELON

    CDELON Active Member

    Messages:
    160
    Location:
    PA
    My ADC Sound Shaper made the difference with my 7 kappas. Balanced out the bass. It' smoothed everything out with the music groups I mentioned.
     
  4. CDELON

    CDELON Active Member

    Messages:
    160
    Location:
    PA
    I checked tech specs. RS II mids are the same. 902-0632 With my 7 kappas, I used a 1/4 inch spacer when mounting the polycone. The frames top diameter s just a tad wider than the polydome. I'm not sure if you will need to do the same with the .1s or .2s.
     
    Last edited: Nov 6, 2018
  5. TomBig58

    TomBig58 AK Subscriber Subscriber

    Messages:
    893
    Location:
    Chicago
    Update: I finally had time to do surrounds on only one of the CS 3008's. I would have done the 2nd but nothing gets in the way of.concentrating on my Bears football game. Nice sound with good bass extension. I found the mid-bass a little forward but it tamed right up by rolling off a little at 1K. Here's some pics of the cabs and insulation. I like that the mid-bass and mid drivers are isolated with tubes front to back. Both are packed tight right to the back of the drivers. I may play around with the bass compartment insulation but later after the other one is done and they are placed. The cabs are very heavy and well built. I think I'm really gonna enjoy listening to these big boys.
     

    Attached Files:

    Mlistens03 and CDELON like this.
  6. TomBig58

    TomBig58 AK Subscriber Subscriber

    Messages:
    893
    Location:
    Chicago
    Update: I wanted to make sure the new surrounds were well broken in and any caps reforming in the crossovers complete so after a month or so of side by side listening the CS3008's will be my keepers over the Kappa 6.1's. It was a close race with both sounding very similar in the high and low ends of the spectrum. It was the Crescendo's mid and mid-bass fullness that won me over.

    With both using the same Kappa emit tweeters of course they were very similar, almost identical in the top end. Both were crisp and clear through the mid-ranges but the Kappas just didn't fill the room quite like the 4-way 3008's. I still love that Polydome though, it's quite a sweet sounding mid. The bass from the 3008's was a little fuller too, with it's 10" woofer and large rear port, but not much over the front ported Kappas. Both suffer from what I have come to call "busy bass reverberations". That is, while listening to jazz or Steely Dan or similarly crisp and not busy content the bass is nice and tight. When listening to rock or other music with rapidly repeating low notes both pairs tend to muddy up with a kind of reverberation that I've described in posts above. At low to medium volume it's not as much an issue. I've experimented with various amps, receivers, and EQ's with the same results. To some this could be construed as normal but to my ears it's not. I guess this confirms me as decidedly preferring the quick and clean bass associated with acoustic suspension speakers. Room acoustics can be ruled out as well because my big Kefs, AR 52s', and even Infinity Qb's don't sound that way to me positioned similarly.

    I can't keep both pairs so the Kappa 6.1's will be moved along. I probably will feel differently when I score a set of Kappa's a little higher up the food chain or one of the non-ported models. It's been fun. Next up is to sideline these pairs and A/B the Qb's and the pair of RSb's I haven't given enough listening time to.
     
    CDELON likes this.

     

    Please register to disable this ad.

  7. StimpyWan

    StimpyWan AK Subscriber Subscriber

    Messages:
    4,305
    Location:
    Blue Ridge Mountains!
    A bit off-topic. What happened with the AR58S tweeters? Why the use of "non-stock tweeters"? My AR58S's aren't bright. I just wonder if the replacements are causing issues?

    Nice job on the Infinity's. It's a shame the 6.1's aren't working out.
     
  8. TomBig58

    TomBig58 AK Subscriber Subscriber

    Messages:
    893
    Location:
    Chicago
    Hey StimpyWan. Good to hear from you. The 58S simply went on the back burner when these Infinity pairs came my way. They need some cabinet lovin' and stuff, they aren't going anywhere as I like them too much and have little invested in them. The Avid tweets came with the 58S's and I still think they are kind of bright. They just don't have that EMIT yumminess I find so mesmerizing with the Infinities. Until I find OEM tweeters I may try a series resistor but it will be trial and error because I don't really know what I am doing lol.

    As far as the overall EQ settings for the 58S I might have exaggerated them a bit. I'm pretty sure the cabinets need sealing, maybe some bracing, and I'm not sure of insulation because I've never opened them up so I boosted the bass a bit. They will be getting the love they deserve trust me.
     
    StimpyWan likes this.
  9. TomBig58

    TomBig58 AK Subscriber Subscriber

    Messages:
    893
    Location:
    Chicago
    Revisiting this thread I realized I never posted a pic showing how much bigger the CS3008's are than the Kappa 6.1. It's a pretty significant difference. Here you go:
     

    Attached Files:

Share This Page