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What are the smallest speakers that are clean and flat down to 20hz?

Also what bass driver or drivers do they use?

Thanks.
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georgehifi
4,966 posts
 
What are the smallest speakers that are clean and flat down to 20hz?

Also what bass driver or drivers do they use?

Thanks.
mapman

Without being EQ'ed the lowest bass I have heard from a large sized bookshelf, has been a pair of Sonus Faber Extremas, that have an ABR using a Kef B139 with voice coil for switched resistive damping to tune to the room, with a pair of Krell 250 monoblocks up them.

Cheers George 
unsound
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http://www.stereophile.com/content/thiel-cs35-loudspeaker-specifications#4SSuUmxSowLoD8Ce.97
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glennewdick's avatar
glennewdick
702 posts
 

Also realistically speaking 20hz wave length is 56.6 ft long you need a combination of at least that in all directions to eliminate room nodes. so that much bass in any room with out treatment is going to give you issues.

http://www.acousticfields.com/wavelengths-in-our-rooms/


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glennewdick
702 posts
 
sorry 56.5ft typo
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mapman OP
15,679 posts
 
The ohm walshes do quite well in this area. I’ve heard response with test records down to 20 hz with 8 inch ohm Walsh drivers in the past. The smaller ones I have these days are 8 inch and the larger 12 inch. One individual on the ohm thread here reported response down below 20 hz recently I recall.
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