12" SI BM vs 15" Fi SSd

[PESteele 10+ year member]

probably be off of a nine.1 with recommended rms. enclosure im not sure about. but both in the optimum sealed or ported. Im looking for sql. I need responses quick

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[baseballer1100 5,000+ posts]

I thought you were getting a q?

 

[PESteele 10+ year member]

i am getting a q but im doing another system for a friend

 

[PESteele 10+ year member]

my friends leaning towards the ssd

 

[PESteele 10+ year member]

anyone sealed one yet

 

[NoLimit 10+ year member]

ill tell you everything about the BM's tomorrow ( thats when they come in, HEHEH )

 

[Electrodynamic 10+ year member]

A single BM 12 is rated at lower than half of what your specified amp is rated at. And the added surface area of the SSd isn't a fair comparisson (i.e., the SSd will be louder - you're comparing a 15 to a 12).

 

[NoLimit 10+ year member]

Hi nick //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

get 2 BM's brosef //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Chevyaudio 5,000+ posts]

Yeah comparing 15 to a 12 isn't really fair...

 

[thadman 10+ year member]

better comparison would be

12" Si BM ($280 + s/h) vs Fi Q15 ($279 shipped)

...Fi Q15 still comes out cheaper cuz shipping is included on Fi's site if I recall

Fi Q15 = sd of 810

Si BM = sd of 480

Fi Q15 = 69% more potential displacement area

Fi Q15 = 27mm of linear xmax

Si BM = 16mm of linear xmax

Fi Q15 = 69% more linear displacement

Theyre both SQ drivers, so I highly doubt the BM has a huge xmag or anything that would extend its SPL capabilities

bottom line...the Fi Q15 has about 138% more displacement capabilities / ON PAPER it has a potential 8.3dB over the BM

The Fi has the potentiality to get almost TWICE as loud (10dB=doubling of sound pressure to human ears)

...$30 more will get you a Q18 with an sd of 1210cm^2 (152% surface area displacement + 69% linear throw...potentiality of 13.26dB)

also remember this is all box dependent, to get the subwoofer to full linear excursion you must compress the air within the box (one of the many reasons why speakers are so inefficient at transfering electrical energy to acoustical energy)...so remember this is just a POTENTIALITY

 

[ngsm13 5,000+ posts]

Indeed.

nG

 

[Showrides]

better comparison would be
12" Si BM ($280 + s/h) vs Fi Q15 ($279 shipped)

...Fi Q15 still comes out cheaper cuz shipping is included on Fi's site if I recall

Fi Q15 = sd of 810

Si BM = sd of 480

Fi Q15 = 69% more potential displacement area

Fi Q15 = 27mm of linear xmax

Si BM = 16mm of linear xmax

Fi Q15 = 69% more linear displacement

Theyre both SQ drivers, so I highly doubt the BM has a huge xmag or anything that would extend its SPL capabilities

bottom line...the Fi Q15 has about 138% more displacement capabilities / ON PAPER it has a potential 8.3dB over the BM

The Fi has the potentiality to get almost TWICE as loud (10dB=doubling of sound pressure to human ears)

...$30 more will get you a Q18 with an sd of 1210cm^2 (152% surface area displacement + 69% linear throw...potentiality of 13.26dB)

also remember this is all box dependent, to get the subwoofer to full linear excursion you must compress the air within the box (one of the many reasons why speakers are so inefficient at transfering electrical energy to acoustical energy)...so remember this is just a POTENTIALITY

I just read the 1st sentence.

But the price of a 12 is $280 shipped. I always have free shipping on everything.

Ben

 

[thadman 10+ year member]

...ok well then theyre identical price wise

Personally...the BM 12 seems like a TERRIBLE option compared to the Fi Q15

I havent personally tested either driver, so I dont know what their BL curves look like but from the sheer displacement advantage the Q15 (and...the Q18 for $30 more ) has over the BM, im going to assume for a given SPL and frequency it will have MUCH lower distortion.

Fi's offerings have the potentiality of a MUCH (...HUGE //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif ) higher SPL figures and less distortion...

doesnt seem like too hard of a choice

 

[ngsm13 5,000+ posts]

I'm gonna have to agree with ya there.

nG

 

[thadman 10+ year member]

You should also consider an RLP 15 $279 for one...or $250 for 2 or more

...or even a TC Sounds TC9 15 (they come across ebay every now and then)

...Im not really sure what market niche the BM is trying to fit in but it looks pretty bleak compared to its competition:uhoh: