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  1. #5
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    Nov 2004
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    Quote Originally Posted by Sir Terrence the Terrible
    I have some questions for you my good man. Do you know what kind of crossover slope this speaker has?(6db per ocatave, 12,24??)

    I know it is possible to replace the woofers(I bought the last 4 they had in stock in the Radio shack warehouse), is it possible to replace the mids and tweeters? Besides the scew terminal versus the spring clips, and the amount of screws on the L-pad, what other differences are there between the 4024's and the 4029's. Once you replace the woofers on the 4029's with a 4024 woofer, what sonic differences are there? Is there any way to remove the dispersion "vanes" on the midrange horn? So many questions here...

    I no longer have the the original graph specs although This can be a very lengthy complex answer given to the Machs speaker design but I will try to break this down simple
    First by using a 15" acoustic suspension woofer and backed by 2 horns one being an HC tweeter and the other multicellular midrange, the first thing comes to mind is "timing" the second would be "overlap" with such an awkward compilation of speakers, however the high, band, and, low pass are as follows:
    "20-800 Hz (24db) , 800-8000 Hz , 8000-25,000 Hz" Resonance 65 Hz
    "what sonic differences are there?"
    There are very complex capacitor storage for blockage and gates that the 4029's do not have so, no, replacing the horns will not do the trick that is also why ferrofluid was added to this model, the 4029's could not hold range of frequencies so there was distortion.... but you had a cool looking Liquid Cooled now stamped on the L-Pad plate...

    The original expensive 4024 crossovers where no longer needed because the replacement to the foam base surround on the woofer caused the "timing" issue,
    the problem with larger woofers is they tend to be
    "slower" than smaller woofers, or less punchy and defined and this surround did just that,
    hope the 4 you bought are not these., more than likely they are if they were last also 4 ohm.
    The 4 ohm woofer was secretly added to try to give extra punch once the receiver wars ended and the lower end receivers came out which could not drive the 8 ohm woofers effectively the 4029's are nothing more than PA speakers.

    In fact Tandy denied they ever had the 4024's once the cheaper made 4029's were released even on their site today http://support.radioshack.com/produc...s&ID=003008002

    they deny the Mach One name under the 4024 listing, this means they didn't have to give you the more expensive 4024 replacement parts that they guaranteed for life any longer even if they were the ones you owned....because the 4029's warranty was only 5 years.

    JBL claims to be the fist to just now have mastered the horn technology just recenty with thier $12,000 speakers that will only drop down to just below 30 Hz ...... did they forget about Fosters Machs Ones? hmmm..
    Last edited by cpq1c1mo; 12-01-2004 at 06:16 AM.

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