i need advice on a woofer >96db flat to 80hz

[lduarte1973]

i need advice on a woofer 96/100db flat to 80hz 8" or 10" (carbon or aluminium cone if possible) , anyone ?

[jerome69]

96dB/100dB 1W/1M : paper and 15". Never seen in other technology
Beyma SM115K for example.

[ra7]

Yup. Eminence Deltalite 2515 II will do it. Probably go a little below that too, but be prepared to build a big box.

[AdamThorne]

MCM's store brand pro woofer will do it in a 12" (97 db) and almost do it in a 10" (95 db). I have a previous revision of the MCM 12, and I've been told it should be crap, but it's plenty of fun in my garage from about 45 hz to 2 khz, ported in about 4.5 cuft (I think). I haven't used the newer versions. Dayton pro 10" and 12" speakers are a little more expensive with similar numbers if the MCMs are too cheap for ya.

But I'm a cheapskate with a tin ear and a cheap amp screwing around in my garage. You might want to spend more $$$.

RCW took me to task, telling me about how I should use a QB5 alignment to get crazy volume down to 80 hz in my build thread about my garage speakers. It might apply to whatever you end up with. See here:
XO help on cheap PA drivers

Edit: ah... I see you are not in the US. Perhaps the alignment info will still be useful, however.

[a_tewinkel]

What's the 96/100 dB? Max. output?

[Charles Darwin]

http://www.faitalpro.com/img/product..._datasheet.pdf

No idea how trustworthy the specs are though.

[ScottG]

Originally Posted by lduarte1973

i need advice on a woofer 96/100db flat to 80hz 8" or 10" (carbon or aluminium cone if possible) , anyone ?

What is "flat"? Does it include baffle step loss? If so, what size baffle?

Sealed, Bass Reflex, or something else for the enclosure? What size enclosure? What tuning freq. if Reflex (or similar)?

What sort of upper freq. response do you want?


In any event.

Aluminum (in a quality design) is highly unlikely, Carbon (in most variations other than additive to paper) is also unlikely, but not as unlikely as Aluminum.

[lduarte1973]

Originally Posted by a_tewinkel

What's the 96/100 dB? Max. output?

sensivity

[a_tewinkel]

Well then we'll probably have to disappoint you I'm afraid. You're asking for something physically impossible...

Assuming a sealed box, half space conditions and an F3 of 80 Hz, you'll need at least a 12" driver to get the desired 96 dB sensitivity. If you want 100 dB, you'll need approximately 18". For full-space you'll need to double up on radiating area, of course. A bass-reflex system will raise your theoretical maximum sensitivity for a given radiating area and F3 with about 3 dB.

If 10" is your maximum size, you'll have to aim for slightly less sensitivity or a higher F3.

[lduarte1973]

Originally Posted by ScottG

What is "flat"? Does it include baffle step loss? If so, what size baffle?

Sealed, Bass Reflex, or something else for the enclosure? What size enclosure? What tuning freq. if Reflex (or similar)?

What sort of upper freq. response do you want?


In any event.

Aluminum (in a quality design) is highly unlikely, Carbon (in most variations other than additive to paper) is also unlikely, but not as unlikely as Aluminum.

box can be sealed or reflex , i dont need too low tunning cause i have subs , but i´d like to have a good response above 80hz , below 80 i cross to subs