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1HOHDude

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    WTB - single K401 *No longer needed

    in Garage Sale

    Posted

    I made a two way center using two 400's with a couple of 10" woofers for my TSCM speakers in my theater.   Used Selenium 220ti for the drivers and a 600 hz crossover with absolutely great results.   I have a great timber match to my modified TSCM.      I used a sealed acoustic suspension box and my rough measurements suggest my low frequency fall off is about 50 hx and the top is beyond my hearing.     

     

    As a second test I fed white noise from my Marantz to the TSCM and then to the center.    The sound was remarkably similar.  [Better in fact than my two RS-52 which you would think would be identical.  I have checked close to a dozen sets of speakers with white noise and when compared they are distressingly dissimilar.]

    Custom RF 7 Center $400.00

    in Garage Sale

    Posted

    11 hours ago, Thaddeus Smith said:

     

    I drove to Little Rock from just outside of DFW (297 miles each way) this past April for La Scalas - it's really not that bad of a distance for a day trip.

     

    For you an easy ride but for me a long 2 day trip.    It is much more complicated than the miles.   I have to convince my significant other of a need since the center would be on the living room TV which is her domain.    My media room is well done already.

    JBL 2446H vs Selenium D4400ti

    in Technical/Restorations

    Posted

    A classic example is the  K77 tweeter.     It slips a lot at the extreme high end.  In fact, most of them are dead at about 17 K.      But tests have shown that most people, given the choice, find speakers that go to 20K+ are "too bright."      In my case I found that when I changed out the K77s for drivers that would go to 24K that I did not like the change in the sound and I ended up going for drivers with a bit of fade at the extreme top.    The early Klipsch engineers were into the "sound" not the specs.   More recent marketing has made the specs paramount.   A new speaker has to go to 40 Hz and 20K+ or the spec guys turn up their noses with serious disrespect.       For example look [ and I really mean listen ] at the current lineup with the 24K tweeters.    I listen to the them and then when I listen to some of the old friends like the Chorus and the Khorns with their 17K speakers and I find that I generally prefer that sound.    I suspect that is why so many of us treasure the "oldies".    But you do all the extreme upgrades they end up sounding just like the new stuff.    I for one prefer the older, mellower sound.

    JBL 2446H vs Selenium D4400ti

    in Technical/Restorations

    Posted

    I agree.   The 2 inch horn opens a whole new set of drivers and some really good ones.   I have the extreme slope xovers on my TSCM  and they made a really major difference.   I can listen and ID the individual instruments in the band left to right across the front of my theater.   But...  this said I found my "old" ears could mostly not tell the difference when I closed my eyes and compared the new driver on the right and the old one on the left.      So in my case the extreme slope xovers were the one change that left no doubt about the improvement.   So, depending on your ears and your need to keep up with the Jones you might want to save your $.

    JBL 2446H vs Selenium D4400ti

    in Technical/Restorations

    Posted

    One more thing.    Even supposed identical speakers often sound different.    I run all the way around my  9.1 system with the white noise from my Marantz.    When I started I had 4 different sounds.   I am building a center to get the same sound and  I have tested and now rejected 4 different RS52ii surround speakers because they sound so different.     I have finally got two that sound similar to each other and similar to my set of RS62ii .    I still have a set of RB81 that do not sound much alike.    Anyone want to exchange an RB81ii   so that I can have two that sound alike?     

     

    PS.   There so many reasons supposedly identical speakers do not sound alike that I will leave that discussion to others.    The white noise test really is very revealing.

    JBL 2446H vs Selenium D4400ti

    in Technical/Restorations

    Posted

    i have just upgraded several speakers.    New drivers, liners and crossovers.     Did this in stages one speaker at a time so I could constantly compare the before and after.     I found the mid driver changes really did not change the sound [ to my old ears ] very much.   The tweeter change was a bit more noticeable  but modest.  In fact the tweeter change introduced a brightness I really did not like much.  By this time I was beginning to think I was wasting my money.

     

    I then brought in ALK extreme  crossovers and WOW !      I would seriously suggest the " G "   version sold by Crites is probably better than your ears.    Save your $.    The 77 tweeter has very limited highs but most people like the sound.    Again I suggest you do it one speaker at a time so you can really know what makes an improvement.  [To your ears since I suspect you will be the prime listener. ]    $ do not always equate with value.

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