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formica

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Posts posted by formica

    Lets see YOUR Home Theater:

    in Home Theater

    Posted

    It is official. My home theater will be featured

    in the Audio Video Interiors magazines March issue so keep your eyes

    peeled.

    Congrats on getting published!!... and will do. Very nice

    greatroom install... I do remember your pics from a little while

    back... did you change sofa's as I'm quite sure I would have remembered

    these[:)]?

    ROb

    New QSC PLX II 3102 hooked up and running...

    in General Klipsch Info

    Posted

    Got a message from Bob Lee, it is a 24 volt dc fan, he wonders if the auto fan speed circuit is working. Going to check that out when he replies.

    Even with it working... it's loud compared to what us "consumers" are used to, BUT relatively quite compared to some other commercial units. The link Speedball posted above was for a fan mod I did on one of my subwoofer QSC / JBL amps (I keep that one in-room) about 3 years ago, and the upgrade helped especially when cranking it a little as the fan switches to "high speed". No problems with overheating BTW....

    For comparison, I also have a Behringer EP2500 running my IB in the HT... and that one's fan sounds like a little airplane.... so its simply kept it in a separate room.

    ROb

    PS: As a side note... I don't know if they still do, but Klipsch used to use QSC in their test labs...

    Kitchen counters 2....

    in General Klipsch Info

    Posted

    Very brave to have wood floors in the kitchen, when I think of the abuse my tile has suffered (being tile, it is fine, but if it were wood it would look awful by now).

    Actually it's more resistant than most people think due to the varied natural colours hiding small imperfections... I've had it as well... for about 7yrs now without refinishing... so i'm pleased

    Are we foolin' ourselves...

    in 2-Channel Home Audio

    Posted

    I saw something on the web the other night that mentioned source frequency reponse:

    Records 30Hz to 50KHz CDs 20Hz to 12KHz !!!!

    Anyone ever see anything like that or know what this is about? I have always thought CDs went up to 22KHz..

    No I haven't... probably because it's erroneous?. [;)]

    Vinyl records are limited by the RIAA curve with a high pass filter at 50Hz while CDs have no theoretical lower limit. The theoretical upper limit on CDs is half the sampling rate... which 44kHz / 2 = 22kHz on a CDa which normally passes through a low pass filter at 20kHz to avoid aliasing.

    As an interesting side note, moving from 10kHz to 20kHz in a single octave... same as going from 50Hz to 25Hz.

    ROb

    chorus II verus cornwall II

    in Technical/Restorations

    Posted

    I think the crux of the matter is which speaker best compensates
    your hearing deficiencies. I would even recommend using an EQ to
    compensate, as a measured flat response won't sound flat to you.



    I believe there was mention of this in a research paper by Floyd E.
    Toole... where they noted that in double blind tests, those with
    hearing deficiencies preferred speakers which were vastly different
    from those chosen by the general population as well as different from
    each other. In other words they preferred those which flattened
    their personal frequency response.

    Keep the Chorus.. but invest in a parametric EQ

    ROb


    Danley Labs DTS-20 On The Way

    in Home Theater

    Posted

    I like the way the room has turned out. Despite a "small" 50" Panny plasma, the room works very well sonically. The sweet spot is very wide for movies, and music floats into the kitchen in a very tactile way. ..... I just had to see how this big old Danley went with the alacrity of the Klipschorns and I can honestly say I couldn't be more pleased!

    That room turned out great... the Danley really just disappears. No one would imagine the power you have discreetly hidden. And based on how pretty those Khorns are in real life... I wonder how much of the room detailing we are missing in the photos.

    As a side note... funny seeing 50" described as small... I remember the day my dad proudly brought home that 21" TV for our family room!
    ROb

    ok... so what did i miss??

    in General Klipsch Info

    Posted

    In recent month's I've been quite busy in a variety of activities pretending to be a socialite... so it did cut down my time to play with my toys... but I can't help but hear them calling... :)

    The IB has been one of the most significant upgrades on par with moving up to Khorns... how's it been working for you Carl? Although I haven't yet maxed them out... I do occasionally wish for a little more efficiency, esp now in winter. You see, when I push it a little more (yeah, yeah, I know... more than most), I've noticed that my voltage drops are greater now... possibly because most of my neighbourhood heats with electricity and my nearest transformer isn't up par. I still have to research it, but I do trip the 20A power unit more while I'm busy shaking pictures off the walls.

    I haven't played with the recent Room EQ Wizard, but John seems to have put quite a bit of work into it, and I like the fact that it interfaces with DSP1124P through Midi. I don't know if it's been changed, but one of it's drawbacks I recall is it doesn't compensate for PC noise by looping one channel back and subtracting it from the measurement. Mike, if you are bored... you could always compare it to the ETF demo... your opinion is always of interest...

    Wondering if Michael's not part of Klipsch's contingency plan concerning the need for NOS replacement Heritage parts...

    ROb

    ok... so what did i miss??

    in General Klipsch Info

    Posted

    Drama queens?... let me guess... in the 2 channel forum? ;)

    When's the pilgrimage this year? I recently got back from Peru... and should be going to Europe at the end of July. It was nice to drop everything and take a break to recharge.

    Haven't bought anything new (or used for that matter) since my last posts... so I still have a bunch of unfinished business in my HT. I did install an old PC in there, mostly for internet radio and testing... but no graphs yet as I'm getting an odd noise peak (tried the onboard, PCI, and USB soundcards).

    I have been watching quite a few movies and listen to pretty much all my music there as well. I didn't do my taxes yet... I always owe them money... so I hope things were brighter for you pauln...;)

    Mike, I noticed you mentioned you got "test equipment" in another thread... what did you chose? How's it working for you?

    Is it me... but Colter got a new job?
    ROb

    How much volume (space) does the K401 displace?

    in Technical/Restorations

    Posted

    To include the K401 in the cabinet makes it

    very deep. I did it by making it look like a la scala.

    The depth is controlled by the K401, the height is controlled by

    squeezing all the drivers on the motorboard, technically leaving me

    only the width as a variable (still have to fit the K401's mouth in

    there too).

    Thing is I'm also very picky on appearances... and really want to have

    an even gap around this centre channel and my inwall recess....

    so that's why I'm left with adjusting the volume with a filler in the

    box.

    I have one of bob's woofers and made a stab

    to tune it myself. This does tske that hump out but it doen't

    have the slam. The woofer goes much lower. Have a 6.5 Cu ft

    with two 4 inch ports.

    Did you try the CW1526 in the same enclosure alignment as the

    Cornwall... or re-tuned according to the T/S parameters? I

    haven't compared the CW15 to these new T/S numbers... but it does seem

    to model similarly to the old square magnet K33 numbers supplied by

    eminence.

    It's one of the reasons I was tempted to leave the design (I used the

    late 70's volume and tuning) as is... and drop either a square magnet

    K33 or a CW15 into the enclosure.

    Bob, could you post the full T/S on the CW1526? I was missing

    Cms, Mms, etc... and i'm not keen on backward calculting those.

    BTW, I will probably hold up the back of the K401 using a brace running left to right and an L bolted to the horn and the brace.

    ROb

    How much volume (space) does the K401 displace?

    in Technical/Restorations

    Posted

    I haven't decided but I am also considering your CW1526 (sp?). I figured I can get the wood cut before getting the drivers as I prefer doing it outdoors to avoid to much dust inside my home.

    I wouldn't mind seeing your T/S measurements for the three... to compare to what I've collected. I have to agree that the round magnet K33 model's the weirdest so far...

    ROb

    PS: this is a preliminary sketch

    CornScala Model (1).pdf

    How much volume (space) does the K401 displace?

    in Technical/Restorations

    Posted

    I'll make this easy for you

    water tested

    external K401 with K55 driver about 277.66 cubic inches

    external K601 with K57 driver is 112.89 cubic inches

    Thanks... water tested, huh.... remind me not to lend you any drivers you'd like to know the volume for... [;)]

    Design is pretty much done... and the only catch right now is my box is too big once i squeeze the K401 inside... but to small if split HF and LF bins.

    It would give me the opportunity to correct the Cornwall's bass hump, but that would also change the character and efficiency of the bass section (requiring a crossover mod). I haven't played with all the numbers yet, but I may keep it original and just use a wooden filler to reduce the volume by about 3ft3.

    BTW, what a large variance in K-33's T/S parameters posted in the past!

    ROb

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