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Thread: DIY 4520 bass horn build

  1. #106
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    To revive my old thread here I've made a few changes. I'm in the process of buying 2226's to put in my diy 4520's. I've got 3 but need one more. I did have a change in amplification though. I'm running a qsc gx7 to run the bass horns at 500 Hz and down to 40hz. I'm using a jbl 6260 to run my 2446's. I'm running it in 2 way and I'm quite happy. Still using a 2x4 mini dsp at the moment but I'm building a analog crossover. With the bass horns at 4 ohms the and puts out 1kilowatt and oh my god its so cool. Some songs can make my eyes rattle in my head so it makes my vision blurry buts its perfectly clean. I can sustain 120 dba at my listening chair, not that I do.


    with the and running the bass horn now I need an even bigger amp to run the subwoofer when I decide what that will be. I've got a 2240 frame to build a 2245 but I don't think it will be able to compete. I've got space but not enough for dual 2245 subs. What's ever it is it will probable be ran by a really big honking amp. Well over 3kilowatts. I might need to run a 220 vac drop to my game room. Oh man I'm so hooked here, hehehe.


    Nick

  2. #107
    Senior Member Lee in Montreal's Avatar
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    Quote Originally Posted by NickH View Post
    To revive my old thread here I've made a few changes. I'm in the process of buying 2226's to put in my diy 4520's.
    Hey Nick. I think you are better off with the 2225s. The 2226 are reflex drivers. 0.31 Qts is too high for a horn. I'll let others chime in, that was only my point of view. Actually, I think the bess drivers would be 2220s with 0.18 Qts...

  3. #108
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    Hey Lee,
    I'm following Subwoofs advice. I understand what your saying but since I ran GPA 416-8b's in the horn I'm literature the 2226's william quite well. Call it a little bit of acoustic equalization. I've tested 2 in one horn and things worked quite well. Plus I've also got the green light from my resident jbl expert too. If it doesn't work to my li,ing then I'll move on. If I harden choice yes I'd buy 2220's but since there not available I consider it a waste of time.

    Nick

  4. #109
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    plus I don't think 2220h's can handle 500 watts each mean.

  5. #110
    Senior Member 1audiohack's Avatar
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    2220's will wrinkle if you are really hard on them but I think you would wrinkle far sooner in a small room with them.

    Barry.
    If we knew what the hell we were doing, we wouldn't call it research would we.

  6. #111
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by NickH View Post
    plus I don't think 2220h's can handle 500 watts each mean.
    What is your goal? Architectural and hearing damage?


    Widget

  7. #112
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    Haha, I've got good home owners insurance, lol. I don't usually crank it past 100db in normal situation. Except when I'm cleaning the house then I crank it a bit more. I like my hearing and I tend to keep it a long time.

    And if I could get them I would rather have 2227's in the horns but since there unobtainium I'm settling for the next best option.

    Nick

  8. #113
    Senior Member Eaulive's Avatar
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    Quote Originally Posted by NickH View Post
    plus I don't think 2220h's can handle 500 watts each mean.
    2220 are more efficient, you won't need more than 100W in this horn to really hurt yourself.
    Your second choice would be 2225, there is a thread in marketplace with a pretty good deal.

    http://www.audioheritage.org/vbullet...ofers-200-pair
    My avatar: 4520 loaded with 2225H on E140 frames,
    1x B&C 12PE32 on custom front loaded horn, 2x 2426 on 2370.

  9. #114
    Senior Member Lee in Montreal's Avatar
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    Quote Originally Posted by Eaulive View Post
    2220 are more efficient, you won't need more than 100W in this horn to really hurt yourself.
    Your second choice would be 2225, there is a thread in marketplace with a pretty good deal.

    http://www.audioheritage.org/vbullet...ofers-200-pair
    Indeed. You can get a decent thump in the chest from a 4520 and the woofer will barely move. Those basshorns require little power to get dynamic.

  10. #115
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    plus I don't think 2220h's can handle 500 watts each mean.
    This is why I have 2227 in my 4530.

    In a small room you need the extra power :-)

  11. #116
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    I know the 2227's are the optimal modern choice. But there more rare then hens teeth around here.

  12. #117
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    I know the 2227's are the optimal modern choice. But there more rare then hens teeth around here.
    They sent all the good stuff overseas. They are not uncommon here in Sweden.

    I got 7. A very good friend got 3.

    4 more for sale: http://www.blocket.se/kronoberg/JBL_...a=4&w=3&last=1

  13. #118
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    Oh man do t tempt me. Just got laid off from my job last week so no money.


    Nick

  14. #119
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    I am sorry to hear that Nick. I really hope you get a new job soon.

    Mårten

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