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High Efficiency 2 Way ???

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  • billfitzmaurice
    replied
    There's no need to try a woofer to see how sensitive it is or to see its frequency response in various cab types, speaker modeling software will tell you that.

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  • jane477
    replied
    Can anyone recommend a High effciency 2 way tower type box project, 90-95 db 1w@1M, with F3 under 50Hz. writing helpThe kits here are mostly low to mid efficiency. Just built C-Note, not a large room, but need 40 wpc to rock.

    Have you tried Fusion-8 woofer?
    Last edited by jane477; 09-09-2020, 06:41 PM.

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  • djg
    replied
    The OP left at "Never mind".

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  • Jackson54
    replied
    I just finished building the Cobalt-8 TM and MTM for my living room. I think they sound very good and the dynamics are incredible. I had horn loaded compression drivers before this paired with a Faital 6" woofer which was good but the tweeter in the Cobalt really sounds different I think it is more revealing. It may give up some sensitivity to the compression tweeters that are horn loaded but the MTM is 94 db which is good enough for me. I will say though they are not a full range speaker and you will definitely need a sub but that's part of the high efficiency design trade off.
    Attached Files

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  • dynamo
    replied
    Denovo Vortex 12

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  • djg
    replied
    Curt Campbell's Cobalt 8 MTM at diysg 94db, Celestion woofs, Scan Speak tweet. If you want a tower, you make it. I don't think diysg has any tower flat packs.

    Several other diysg Home Theater kits up to 98db, see for yourself. Most diysg kits are 2 way.

    The Apollo MTM is 88db, btw.

    The little S2000 MTM is 91db.

    Jeff Bagby designed Helix MTM 91db.

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  • dwigle
    replied
    Originally posted by BillDurham View Post
    85 db is low efficiency. Tweeter is a wave guide not a horn
    before so quick to dismiss (as a newcomer?) did you look at the HORN based systems I suggested?

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  • billfitzmaurice
    replied
    Originally posted by isaeagle4031 View Post
    A waveguide or horn based system is what you will need for that higher sensitivity. It comes at the cost of less bass extension. .
    Not necessarily. If you use a high sensitivity woofer in a direct radiating alignment you give up low frequency extension, but you can get around that by using two or more average sensitivity woofers. You just need to have an amp capable of handling the low impedance load that will result.

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  • craigk
    replied
    Originally posted by BillDurham View Post
    Never mind
    don't get upset, you still get a participation medal.

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  • billcurrier
    replied
    You might want to consider the Audaax PR240MO 95 dB. The Audax PR240M6-8 goes lower but is 92 dB efficient. You should be able to find a tweet that can hit 95 dB without much trouble but you will lose some efficiency on the woofer when you add in baffle step. Good luck.

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  • djg
    replied
    Knock yourself out.

    Speaker Design Works

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  • BillDurham
    replied
    Never mind

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  • isaeagle4031
    replied
    Originally posted by BillDurham View Post
    85 db is low efficiency. Tweeter is a wave guide not a horn
    85db is not low sensitivity, but on par with most 2way systems. And that is really what you are talking about here. Sensitivity and efficiency are 2 very different animals. Sensitivity is rated in dB where efficiency is rated as a percentage.

    A waveguide or horn based system is what you will need for that higher sensitivity. It comes at the cost of less bass extension. So a sub, or two is needed to get to that last octave or two.

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  • BillDurham
    replied
    85 db is low efficiency. Tweeter is a wave guide not a horn

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  • dwigle
    replied
    DIYSoundGroup Apollo or other horn based kits on the same site. The tritrix MTM at PE with a sub is also a good low cost option.

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