Jump to content

dkalsi

Regulars
 View Profile  See their activity

  • Posts

    532

  • Joined

  • Last visited

 Content Type 

Posts posted by dkalsi

    Double Stack ESS AMT-1 with Wings--Possible Kit for Heritage

    in Technical/Restorations

    Posted

    1 hour ago, glens said:

    Did you pressure the folks to hurry up and make yours?  Not a call I'd make; rather it would be "take your time."

     

    I was guilty of calling them twice to figure our when they would ship. Hopefully I'm won't be paying for that call now. 

     

    I'm going to take Chris's and Rudy's advice and let them break-in over the next couple days and then re-measure. 

     

    Nonetheless, it would be interesting to see left and right measurements for each pair that people have purchased here. 

    • Like 1

    Double Stack ESS AMT-1 with Wings--Possible Kit for Heritage

    in Technical/Restorations

    Posted

     
    This thread has killed off their inventory. The elves are trying to ramp up productions. They are scratching their heads as to why the sudden increase in 4 X order over 2 X.



    Ha - I’m not sure if this was meant to be a joke, but I just spoke to them and they said they were behind because “there were a shit-load of orders from Klipsch users” - way more than their normal operations :)

    Chris and Rudy belong on their payroll. The two of them made ESS quite a bit of money in short order.


    Sent from my iPhone using Tapatalk
    • Haha 2

    Double Stack ESS AMT-1 with Wings--Possible Kit for Heritage

    in Technical/Restorations

    Posted

    1 hour ago, Chris A said:

    Actually, I believe that you need to be within 1/4 wavelength--which is the reason why MEHs came into being:

     

    Chris, 

     

    I'm not nearly as technically competent as you, but I'm not 100% sure whether the 1/4 wavelength rule is applicable to non-MEH designs. 

     

    Take for example the thousands of the typical 1" dome tweeter and 6.5" woofer  2-way bookshelf speakers. Most of these design typically cross at 2.0Kz - 2.5Kz. 

     

    The 1/4 wavelength at 2.25Khz is approximately 38mm, or 1.5" ---which would mean its impossible to create 1" tweeter + 6.5" woofer design that does not exhibit sever lobing. 

     

    Its not that the 1-wavelength rule does not exhibit lobing, it just that it doesn't suffer as severely as the one whether the c-t-c distance is in excess of the wavelength at the crossover frequency. 

     

    See below: 

    http://audiojudgement.com/speaker-lobing-polar-response/

    http://audiojudgement.com/understand-the-passive-crossover-network/

     

    Again, I know absolutely nothing about MEH designs, but if they are achieving less than 1/4 wavelength spacing between drivers, I would imagine the vertical and horizontal polar response must be amazing. 

     

    Depending on the crossover slope (if its less than 4th order), I do think it would be good for Rudy to try flipping the bassbins. 

     

     

    Double Stack ESS AMT-1 with Wings--Possible Kit for Heritage

    in Technical/Restorations

    Posted

    8 minutes ago, Rudy81 said:

    My guess would be that the more you move the drivers away from the bass producer, the more you lose coherence at the crossover area. 

     

    Correct! You certainly don't want the center (of the AMT) to center (of the mid-bass/bass driver) distance to exceed the wavelength at the crossover frequency. Doing so will likely result in severe lobbing/cancellation. 

     

    As an example, if you are crossing at 800hz, you don't want the center to center distance between the AMT and the mid-bass driver to exceed 43 cm, or approximately 17" (wavelength of 800hz). 

     

    Once I get my AMTs, I plan of putting them directly on top of a 12" driver and will plan on crossing the drivers somewhere between 1200 - 1600 hz. 

    • Like 1

    WTB: Iphone 6 or newer (AT&T)

    in Garage Sale

    Posted

    Looking for a used iphone for my nephew. His phone broke and he is looking for a replacement.  I believe he is on the AT&T network. 

     

    I have had good luck purchasing from a fellow forum member before so I thought I try again. 

     

    Please let me know if you have one available for sale. 

     

    Thanks,

    D

    Is it okay to turn on-off tube gear multiple times a day?

    in Talkin' Tubes

    Posted

    I don't have a dedicated music room. Instead, my music room in our family room. 

     

    There is no TV there - just a music system. 

     

    Sometimes I listen to music in the morning during breakfast and again later in the day when I come home for work. 

     

    My wife occasionally listens to the system in the afternoon. 

     

    My question is: Is it okay to turn on-off a tube based system multiple times a day?

     

    I've really only owned solid state systems over the years. I have owned a tube based system at one time, but then was very careful only to listen to the system once a day or every other day. 

     

    The manual on my Plinius SA-100MKIII (solid state) amp specifically instructs to leave the amp on all the time, indicating that it uses absolutely minimal power when idle. 

     

    I plan on keeping the Plinius solid state amp in the system. I'm just thinking about replacing my current passive pre with a tube preamplifier (specifically AE-3 DJH). So any issues with me turning the tube pre-amp on multiple times a day?

     

    Thoughts anyone?

×
×
  • Create New...