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Thread: 9.0 cubic feet tuned to 30 Hz

  1. #1
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    9.0 cubic feet tuned to 30 Hz

    2240H versus 2245H (white)
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    2241H versus 2245H (white)
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    2242H versus 2245H (white)
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    Dis Member mikebake's Avatar
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    Interesting; spkrmn57 better have a look! Ha! He likes the 2240; sez it's punchier and he doesn't need better than low 40's.

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    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by mikebake
    Interesting; spkrmn57 better have a look! Ha! He likes the 2240; sez it's punchier and he doesn't need better than low 40's.

    If those are your requirements then use 2226s! Punchier still!!


    Personally I like to know that the whales off the coast are enjoying my music, so I'll stay with the Sub1500s.

    Widget

  6. #6
    Dis Member mikebake's Avatar
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    Quote Originally Posted by Mr. Widget
    If those are your requirements then use 2226s! Punchier still!!


    Personally I like to know that the whales off the coast are enjoying my music, so I'll stay with the Sub1500s.

    Widget
    I believe he is focused on 18's right now. He also has a system with 2226's that he still uses and likes regularly. He also has/had an Edgarhorn system; not sure if he still does.

  7. #7
    Senior Seņor boputnam's Avatar
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    Nice, Giskard!!

    Once I found the 2245's - in a proper cabinet, of course - the hunt was over.
    bo

    "Indeed, not!!"

  8. #8
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    Quote Originally Posted by Mr. Widget
    Personally I like to know that the whales off the coast are enjoying my music, so I'll stay with the Sub1500s.
    Not everyone bought ten pairs.

    My understanding was that he has what he has and wanted to know what to expect.

  9. #9
    Senior Member spkrman57's Avatar
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    2240's in 9 cu ft cabinet

    My understanding was that he has what he has and wanted to know what to expect.Today 06:56 PM



    You have it right Giskard, I already have 2226's/Altec 416's and others. The 2240 solution fits my wallet and my requirements.

    I have 2226's and like what they do for me. I think the 2240's will do for me what I want also. And they are available to me at a price I can afford.

    If the money and availability of 2240's were different, I might look at the 2241 or 2242, but I can get the 2240's at a good price due to a friends generousity.

    I can't tell from the graphs how far off the 2245's and 2240's are, but I am guessing I can get 40hz bottom end from the 2240's which is good enough for me.

    I had a pair of 2245's and don't care for the heavey cone and foam surround. I know that is petty thinking to some of you, but I also have several other drivers around my house and like to try different ideas from time to time, and this is one of them.

    For me on this project run with 45 SET 2 watts/chnl, the 98 db efficiency will work well.

    Thanks Giskard for understanding my needs on this project, and to Mike for the great cabinets that I will be using.

    Ron

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    Senior Member GordonW's Avatar
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    Huh. Looks like low-Q, low-resonance drivers win again. I've noticed that with passive radiators very plainly, but haven't gone through enough iterations of drivers to get that "feel" for drivers themselves.

    Speaking of that, here's an SPL graph of a project I just finished. Not JBL products, but anyone care to speculate on the effective group delay of THIS system? With a box-resonance of about 14-15 Hz, I don't think MUCH of it is in the AUDIBLE spectrum at all!! And it's capable of over 110 dB at 20 Hz, PER CABINET of a pair. The passive radiator, in this case, had a self-resonance of like 4.25 Hz... not much contribution to the transfer function, ANYWHERE it could POSSIBLY matter...

    Regards,
    Gordon.
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    Senior Member spkrman57's Avatar
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    Some of my speaker systems

    I noticed some folks thinking that this would be my "end all" system for the ages. Well actually the 2240 will replace the 80hz Edgar mid-bass horn(JBL 2205A) due to the small room I have and Bruce recommends that horns be no closer than 1 wavelength to the listener, that would be approx 14 ft. My living room is only 12' x 16' which would be difficult for the midbass horn to perform at its peak. I have had it set up and noticed it is the weakest link.

    I also don't want to bother with a sub in the system(another item to phase into the mess).

    For punchy music, I have my 4 Pi-pro clones(2226 + Altec 902/650hz Edgarhorn round wooden tractix with Pi crossover) I have had this system for some time and it performs well.

    Altec A7 components if I wanted to put together, but the 4 Pi-pro surpasses on the "fun-meter", and much smaller too.

    I also have JBL 4311A control monitors/JBL D123 + 075 + N2400 crossover in 1958 GE corner cabinet/a few Audio Concept AC-12 and Dynaudio D28AF 2-ways with my cabs and crossovers(1st order).

    I also have the parts to build most anything I need. I have several 2226 drivers and 4648 cabinets. I use 4 of these as a box spring for my bed(saves storage room also).

    So now with the economics of getting 2240's at a great price(read cheaply here!), and just yesterday picked up Mike's cabs he had for his 2245's, and I am all set up in a week or two to add my Edgarhorn 350hz horn with Altec 288 driver, and 075 on top, all with 1st order crossover.

    If this does not work to my expectations, I can always sell the 2240's and find a pair of different 18" drivers to use. I like to experiment(hence the moniker: spkrman57), so this is another of my pipe dreams to check out and evaluate.

    Thank you all for your opinions, and Mr Widget, if I needed to let the fish know what I am doing, I would take my 8 2226's and install them in the 4648 cabinets and get a 2kw/chnl amp and blow out my windows.

    But my preference is for using single ended amps with less than 10 watts/chnl into high efficiency speakers for a very "glorious" sound!!!!!

    Regards, Ron

  12. #12
    Dis Member mikebake's Avatar
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    Quote Originally Posted by spkrman57
    Thank you all for your opinions, and Mr Widget, if I needed to let the fish know what I am doing, I would take my 8 2226's and install them in the 4648 cabinets and get a 2kw/chnl amp and blow out my windows.

    But my preference is for using single ended amps with less than 10 watts/chnl into high efficiency speakers for a very "glorious" sound!!!!!

    Regards, Ron
    Personally, I like to drive worms up from their winter hibernation burrow............while derailing subways.
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  13. #13
    Dis Member mikebake's Avatar
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    Furthermore, Ron, do not bite the Widget hand that feeds, or I shall be forced to have Columbus City Council declare your house an audio museum, and evict you........

    Actually, why don't you post some house/gear photos in another thread. That would be fun!

  14. #14
    Senior Member spkrman57's Avatar
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    My apologies to Mr Widget!

    I guess I just jumped a little too quick in response to his comment.

    And Mike, I will have to post some pics of the museum when I can figure out how to work my digital camera and save pics in my pc.

    I bought the pc 2nd hand and somehow deleted driver cards(???) which allow printers/cameras/etc.....I am pc illiterate(my day job is mainframe operator/recovery which is a defferent world).

    Mr Widget, do you accept my apologies????? I am sorry for my remarks!!!


    Ron

  15. #15
    Administrator Mr. Widget's Avatar
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    I wasn't offended, but thanks just the same.

    We all have different audio needs. (desires) Personally I like the idea of high efficiency and low watts, but so far all of the variations on that theme I've heard have had too much personality for my taste. (nice way of saying colored sound)

    Widget

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