They need to be 5.25" diameter, and sensitive as possible, preferably 98Db/w.
2ohm impedance is preferable also, and they'll be covering the 160Hz-3KHz range, with 18 db/oct slopes.
So far I've found nothing which fills the criteria...
Rubber surround on plastic cone would be preferable also.
2ohm impedance is preferable also, and they'll be covering the 160Hz-3KHz range, with 18 db/oct slopes.
So far I've found nothing which fills the criteria...
Rubber surround on plastic cone would be preferable also.
If you could bump it up till 6.5" there is one possibility that I know of - having searched for something like this myself - and that is the Beyma Pro 6 MI
http://www.usspeaker.com/beyma pro6mi-1.htm
It comes from their competition series but from personal experience there are some things to consider:
- It is rated at 98db, but I crossed them over very low (1500 hz) and they are around 95db from there on. Since my door panels are not very airtight and mounting options were limited, I suspect I've lost again a few db down low due to airleaks and acoustic short cirquits. Bottom line is I've did some hearing/EQ tests and I padded my 100db tweets an extra 5db down till 90db to bring them in line with the mids.
- If you really want 2 Ohm and high sensitivity you can wire 2 of them in parallell. 3dB extra sensitivity and double the power handling. More expensive, but depending on your goals
- Do some modelling and you'll see that if you put them in small enclosures you can create a "bump" at their lower end to get some extra db there. Form the top of my head i think 300Hz in a 2L enclosure. Should be doable in a door if you are willing to modify it.
- I was first looking for PA midranges to get till the desired sensitivity and Beyma did a spinoff for cars so ... but any PA midrange should do, so do a search there. (PHL, Audax PA drivers ??) Large diesel engines are also used for boats, so why shouldn't a PA driver be used inside a car?
- They go very loud and still stay clean. Usually you don't notice it is so loud untill a more dynamic piece of music comes along. I haven't driven them past 10 watts peak yet (I cross them over at 125Hz - head unit filtering), but if properly crossed over around 400Hz i don't doubt they will soak all rated 200 watts (and dislodge my door panels!)
http://www.usspeaker.com/beyma pro6mi-1.htm
It comes from their competition series but from personal experience there are some things to consider:
- It is rated at 98db, but I crossed them over very low (1500 hz) and they are around 95db from there on. Since my door panels are not very airtight and mounting options were limited, I suspect I've lost again a few db down low due to airleaks and acoustic short cirquits. Bottom line is I've did some hearing/EQ tests and I padded my 100db tweets an extra 5db down till 90db to bring them in line with the mids.
- If you really want 2 Ohm and high sensitivity you can wire 2 of them in parallell. 3dB extra sensitivity and double the power handling. More expensive, but depending on your goals
- Do some modelling and you'll see that if you put them in small enclosures you can create a "bump" at their lower end to get some extra db there. Form the top of my head i think 300Hz in a 2L enclosure. Should be doable in a door if you are willing to modify it.
- I was first looking for PA midranges to get till the desired sensitivity and Beyma did a spinoff for cars so ... but any PA midrange should do, so do a search there. (PHL, Audax PA drivers ??) Large diesel engines are also used for boats, so why shouldn't a PA driver be used inside a car?
- They go very loud and still stay clean. Usually you don't notice it is so loud untill a more dynamic piece of music comes along. I haven't driven them past 10 watts peak yet (I cross them over at 125Hz - head unit filtering), but if properly crossed over around 400Hz i don't doubt they will soak all rated 200 watts (and dislodge my door panels!)
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