For that to work, however you need a huuuuuuuuuuuuuuuuuuuuuge horn. But sure if you do then it would be an awesome setup. Though if you took the time to build such a huge horn I'd instead use a coaxial compression driver like Overview or one of the neo variants. A bit more expensive though.
I meant in reference to post #2 and #4, which were before you reminded me of the 10F =)
that's the fr range I would use good dome, like these for instance
https://www.parts-express.com/tang-band-75-1558se-3-textile-dome-midrange--264-857
or this one, much cheaper
https://www.parts-express.com/dayton-audio-rs52an-8-2-dome-midrange--285-020
https://www.parts-express.com/dayton-audio-rs52an-8-2-dome-midrange--285-020
Audiotechnology C-Quenze 15H521206SDKM - Audiohum Alta Fidelidad
www.audioexcite.com AudioTechnology 15H521206SDKM
As good as it gets in both performance and subjective terms. This is a world class driver.
www.audioexcite.com AudioTechnology 15H521206SDKM
As good as it gets in both performance and subjective terms. This is a world class driver.
Tangband W3 1285sg. Phaseplugged, if only in appearance. Flat enough to be worth forgetting any bumps. Looks cool, sounds cool.
Fountek FR88EX
Vifa NE95W
Vifa TC7 (if you don't need high SPL)
Tested here:
Timothy Feleppa's Pages
The Dayton RS52 and Scanspeak 10F look promising too.
Phase plugs don't seem to work on 3" speakers in my experience. From the experiements i've done, off-axis frequency response didn't improve and in most cases it caused problems with on-axis response, harmonic distortion and killed sensitivity. There are exceptions to this, for instance the Tangband W3-1878 but still off-axis performance isn't any better than other 3" cone drivers.
If the driver is only being used up to 7Khz then a non-plugged 3" cone driver should be fine even at 45degrees off axis.
Vifa NE95W
Vifa TC7 (if you don't need high SPL)
Tested here:
Timothy Feleppa's Pages
The Dayton RS52 and Scanspeak 10F look promising too.
It's good, but the freq response tilts up almost 10dB between 700Hz and 7K.
The FF85WK is a bit of a poor performer unless you need the sensitivity. I've tested it, see above link.
Phase plugs don't seem to work on 3" speakers in my experience. From the experiements i've done, off-axis frequency response didn't improve and in most cases it caused problems with on-axis response, harmonic distortion and killed sensitivity. There are exceptions to this, for instance the Tangband W3-1878 but still off-axis performance isn't any better than other 3" cone drivers.
If the driver is only being used up to 7Khz then a non-plugged 3" cone driver should be fine even at 45degrees off axis.
Last edited:
Sherical enclosure & flat over 200Hz to 8Khz
[QUOTE=ScottG;3873264
....
The problem with a larger sphere is that it usually moves the driver away from the next driver - with a resulting irregular response due to combing/interference. On the other hand if it's a small fullrane driver (with a lower freq. crossover to a bass driver)....
I agree with Scott, if you drop the crossover point to around 200Hz ( like the attached) you can increase centre to centre spacing up to 500mm if required.
The attached crossover at 200Hz ( active 24dB slope using AV amp DSP) to a pair of 6.5 inch Dynaudio bass mids.
They sound fab and fill a large room with low distortion coherent sound, you are welcome to have a listen as the owner is a local musician and loves to talk music and equipment!
The 4.5 inch Neo BMR is astonishingly flat over 200Hz to 8KHz, on and off axis....The off axis performance is unmatched.
I have also built 210mm diameter domes for enclosures ( will post pics in a mo) and in a 1.65meter tall line array sound great with no audible trace of comb filtering.
Cheers
Derek.
[QUOTE=ScottG;3873264
....
The problem with a larger sphere is that it usually moves the driver away from the next driver - with a resulting irregular response due to combing/interference. On the other hand if it's a small fullrane driver (with a lower freq. crossover to a bass driver)....
I agree with Scott, if you drop the crossover point to around 200Hz ( like the attached) you can increase centre to centre spacing up to 500mm if required.
The attached crossover at 200Hz ( active 24dB slope using AV amp DSP) to a pair of 6.5 inch Dynaudio bass mids.
They sound fab and fill a large room with low distortion coherent sound, you are welcome to have a listen as the owner is a local musician and loves to talk music and equipment!
The 4.5 inch Neo BMR is astonishingly flat over 200Hz to 8KHz, on and off axis....The off axis performance is unmatched.
I have also built 210mm diameter domes for enclosures ( will post pics in a mo) and in a 1.65meter tall line array sound great with no audible trace of comb filtering.
Cheers
Derek.
Attachments
Dome enclosure pics
Here are pics of the 210mm diameter dome enclosures.
These used another version ( internal surround) of the 4.5 inch Neo BMR, still use these at home so happy to let you hear them.
I run them full range, with a wee bit of low end Eq they are flat over 45Hz to 15KHz....In room on the wall they really kick A++!!
Cheers
D
PS
I have a spare pair of 6.5 inch Audax 170 Aerogel drivers, they are very good bass / mid but obviously need a tweeter...I am going to sell them soon if you decide to go that route.
Here are pics of the 210mm diameter dome enclosures.
These used another version ( internal surround) of the 4.5 inch Neo BMR, still use these at home so happy to let you hear them.
I run them full range, with a wee bit of low end Eq they are flat over 45Hz to 15KHz....In room on the wall they really kick A++!!
Cheers
D
PS
I have a spare pair of 6.5 inch Audax 170 Aerogel drivers, they are very good bass / mid but obviously need a tweeter...I am going to sell them soon if you decide to go that route.
Attachments
No beaming at 8KHz
Hi Face,
No beaming...!
😉Even the off the shelf BMR here has great off axis performance...
http://www.cotswoldsoundsystems.com/specifications/CSS_Specification_Sheet_BMR85DD_N4Y_r1.pdf
With a modified suspension / cone it really flies...Its naturally flat within plus / minus 2dBfrom 150Hz to 9KHz....Over a plus / minus 85 degrees ( approx. 165 degrees coverage with on wall mounting) .... That is both horizontal and vertical by the way!
Its only because If this driver I am getting back into commercial audio production, I will be launching a series of commercial products and DIY kits later this year.
Cheers
Derek.
PS Welcome to come round and hear for yourself, or send a trusted audio buddy who can report back.
Hi Face,
No beaming...!
😉Even the off the shelf BMR here has great off axis performance...
http://www.cotswoldsoundsystems.com/specifications/CSS_Specification_Sheet_BMR85DD_N4Y_r1.pdf
With a modified suspension / cone it really flies...Its naturally flat within plus / minus 2dBfrom 150Hz to 9KHz....Over a plus / minus 85 degrees ( approx. 165 degrees coverage with on wall mounting) .... That is both horizontal and vertical by the way!
Its only because If this driver I am getting back into commercial audio production, I will be launching a series of commercial products and DIY kits later this year.
Cheers
Derek.
PS Welcome to come round and hear for yourself, or send a trusted audio buddy who can report back.
Location
I stay in between St Neots and Huntingdon, 5 mins off the A1.
10 mins from St Neots station so its only 45 mins into / out of London Kingscross.
Cheers
D.
I stay in between St Neots and Huntingdon, 5 mins off the A1.
10 mins from St Neots station so its only 45 mins into / out of London Kingscross.
Cheers
D.
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