Recommend a 3"-6" full range for a ~7.2L enclosure
Okay, big edit due to size of enclosure changing. Need a 3"-6" fullrange for an enclosure with the following external dimensions: 8.5"W 12"T and 7.5"D. Assuming 3/4" MDF or Ply leaves me with about 7.22L to work with.
Looking to build some small mantle placed speakers for my living room. I'm thinking somewhere around a 3" driver that could be used in a small enclosure. Will be used with a subwoofer so is like them to go down to 80Hz or so. Not opposed to a "bar" type of enclosure. Small is the key. <$50 per driver is my limit.
Thanks!
Okay, big edit due to size of enclosure changing. Need a 3"-6" fullrange for an enclosure with the following external dimensions: 8.5"W 12"T and 7.5"D. Assuming 3/4" MDF or Ply leaves me with about 7.22L to work with.
Looking to build some small mantle placed speakers for my living room. I'm thinking somewhere around a 3" driver that could be used in a small enclosure. Will be used with a subwoofer so is like them to go down to 80Hz or so. Not opposed to a "bar" type of enclosure. Small is the key. <$50 per driver is my limit.
Thanks!
Last edited:
Tandband w3-1285sg. It will go in less than a litre,but isn't less than $50 and wont get to 80hz.
Your requirements are contradictory, and i doubt you'll find a driver suitable.
Your requirements are contradictory, and i doubt you'll find a driver suitable.
A "very small" straightforward FR enclosure maybe larger than you have been anticipating. Given that the response must go well below 80 hertz to match up with a sub-woofer......some compromises on your part must be applied.
You say the position of these enclosures will be "on the mantle"....Question, how "deep" is this mantle of yours, 80mm, 150, 240?
You can just about hit you cost limitations with one of Tang-Bands premium drivers, but the enclosure will be considerably bigger than you anticipated.
A plethora of TB drivers exist at "Four-inches" but they have rather large mounting flanges, so the actual radiating surface is much less than 4".....same for the three-inch versions...a lot are outside of your pricing limit.
Like I said a Five-inch version exists which will hit your price point & performance but is appx 175mm deep....which may or may not actually fit on your mantle.
__________________________________________________Rick..........
You say the position of these enclosures will be "on the mantle"....Question, how "deep" is this mantle of yours, 80mm, 150, 240?
You can just about hit you cost limitations with one of Tang-Bands premium drivers, but the enclosure will be considerably bigger than you anticipated.
A plethora of TB drivers exist at "Four-inches" but they have rather large mounting flanges, so the actual radiating surface is much less than 4".....same for the three-inch versions...a lot are outside of your pricing limit.
Like I said a Five-inch version exists which will hit your price point & performance but is appx 175mm deep....which may or may not actually fit on your mantle.
__________________________________________________Rick..........
The Fountek FR89EX is within your price range and will get close to 80Hz in a 1.5 liter enclosure with a 1 inch by 5 1/2 inch long port.
This Fountek will work, but just barely with no room to spare!
Running the SIM, I get 1.9 Liters internal volume, 155mm by 123mm by 97mm internal dimensions, Fb of 82.97 Hz., But the biggie is -3.06Db@75.6 Hz. Right on the edge, another thing is, this runs at 83.6 Db worth of efficiency...power-sucking to get some decent SPL! Tweaking the port sizing to keep it actually inside the enclosure & the Mach numbers "doable", I come up with 28mm diameter by 118mm long. You will of course have to change the volume a bit to compensate for the volume of the port-tube itself!
Small enough for ya??
_____________________________________________________Rick.........
Running the SIM, I get 1.9 Liters internal volume, 155mm by 123mm by 97mm internal dimensions, Fb of 82.97 Hz., But the biggie is -3.06Db@75.6 Hz. Right on the edge, another thing is, this runs at 83.6 Db worth of efficiency...power-sucking to get some decent SPL! Tweaking the port sizing to keep it actually inside the enclosure & the Mach numbers "doable", I come up with 28mm diameter by 118mm long. You will of course have to change the volume a bit to compensate for the volume of the port-tube itself!
Small enough for ya??
_____________________________________________________Rick.........
Last edited:
That's funny Richard, I was just doing the same thing and got pretty much exactly what you did. Yep, those dims are just about perfect! This may be the ticket!
Thanks to thedoc and Richard!
Thanks to thedoc and Richard!
The number of 3" drivers that reach 80 Hz is small. FF85wk real close in 2.5 liter, Alpair A6.2p in 2.5 litre will, Alpair 6.2m won't go quite as low but will work in 1.5 litre. The Fountek FR88/89ex will but are not as good mid/top. The uber cheap FE85 might get you a significant portion of the way to the more expensive versions (i haven't heard it). The Aura NS3 is probably the 3" bass champion and may meet your small & low requirement sealed. It does not have as good a DDR as the above.
I have tried quite a few others but these are the ones i like best. My favorites are the FF85wk & Alpair 6.2p
dave
I have tried quite a few others but these are the ones i like best. My favorites are the FF85wk & Alpair 6.2p
dave
What are you thinking when you sat "small?" If an enclosure that is 8" X 8.5" X 6" will work, you cab build this in two sections. It's been done with great results.
https://sites.google.com/site/undefinition/sprite
The drivers are $21.35 each and it's got a very minimal filter. Dayton Audio ND90-8 3-1/2" Aluminum Cone Full-Range Driver 8 | 290-210
About $30 per speaker and filter total (not including the cabinets).
Here's a link to couple more options.
http://techtalk.parts-express.com/s...oxel-Subwoofer-2-1-s-in-Walnut&highlight=pico
Wolf's PCs only need a box with inner dimensions of 4" X 4" X 4".
Mike
https://sites.google.com/site/undefinition/sprite
The drivers are $21.35 each and it's got a very minimal filter. Dayton Audio ND90-8 3-1/2" Aluminum Cone Full-Range Driver 8 | 290-210
About $30 per speaker and filter total (not including the cabinets).
Here's a link to couple more options.
http://techtalk.parts-express.com/s...oxel-Subwoofer-2-1-s-in-Walnut&highlight=pico
Wolf's PCs only need a box with inner dimensions of 4" X 4" X 4".
Mike
Last edited:
My favorite 3 inch driver is the Vifa TC9 ($13 ea.) or the Peerless TG9 ($22 ea.) drivers. They are identical except for the cone material and color of the cone. the TG9 with the gray glass fiber cone has a slightly smoother top end. The TC9 has a black treated paper cone. The 8 ohm version has slightly more extension at the top end (available at Madisound). They both have all the right features; rubber surrounds, well vented spider, vented pole piece, shorted turn on pole piece, arguably the most correctable frequency response, minimal cavity effect, decent Xmax. I wouldn't take them below 300HZ unless you're going to have active EQ, and I think that would apply to any 3 inch driver. Even then, you can only get so much out of a 3 inch cone before doppler distortion becomes an issue. If you're only going to have one on each side, I wouldn't try to take them under 100HZ even with active EQ. I'm using both of these drivers and found this out the hard way.
Any larger driver that I know of won't have a very flat high end response. Roger Russel, formerly of McIntosh, uses the TG9 in his $19,000 line array system with active EQ. I would definitely put any 3 inch driver in a closed box, so damping would be optimal - less likely to bottom out. Bass Reflex baffles have good damping at the tuned frequency, and very little damping on either side of that frequency. Plus ports have to be done pretty accurately to be any good. Published specs and actual specs can vary, and not everyone has the equipment and knowledge to get that right.
If you decide to use active EQ, I'd also recommend an active 4 pole crossover. That would be a big plus for several reasons. Drivers with bigger Xmax (such as the Dayton drivers) have cavity effect issues because the surround suspension sticks out so far. It shows in their published frequency response graphs. Metal diaphrams allegedly have better resolution, but always seem to have a nasty resonance in the high frequencies that makes using them very difficult. If you want to front mount the drivers, I'd keep the baffle board thickness to 1/2 inch or less so the driver can breath well out its rear vents.
Any larger driver that I know of won't have a very flat high end response. Roger Russel, formerly of McIntosh, uses the TG9 in his $19,000 line array system with active EQ. I would definitely put any 3 inch driver in a closed box, so damping would be optimal - less likely to bottom out. Bass Reflex baffles have good damping at the tuned frequency, and very little damping on either side of that frequency. Plus ports have to be done pretty accurately to be any good. Published specs and actual specs can vary, and not everyone has the equipment and knowledge to get that right.
If you decide to use active EQ, I'd also recommend an active 4 pole crossover. That would be a big plus for several reasons. Drivers with bigger Xmax (such as the Dayton drivers) have cavity effect issues because the surround suspension sticks out so far. It shows in their published frequency response graphs. Metal diaphrams allegedly have better resolution, but always seem to have a nasty resonance in the high frequencies that makes using them very difficult. If you want to front mount the drivers, I'd keep the baffle board thickness to 1/2 inch or less so the driver can breath well out its rear vents.
Last edited:
Hi,
A bar type speaker will give you the lowest height and depth
but very low internal volume compared to external volume.
However you can use 4 instead of 2 3" drivers in a 1.5 way
format and I'd go for the ND90, using about 1mH on the 0.5
way driver. If it sounds a little heavy bypass the 1mH with
various resistors to bring up the top end somewhat.
YMMV but 4 3" drivers are much better than 2 down to 80Hz.
rgds, sreten.
A bar type speaker will give you the lowest height and depth
but very low internal volume compared to external volume.
However you can use 4 instead of 2 3" drivers in a 1.5 way
format and I'd go for the ND90, using about 1mH on the 0.5
way driver. If it sounds a little heavy bypass the 1mH with
various resistors to bring up the top end somewhat.
YMMV but 4 3" drivers are much better than 2 down to 80Hz.
rgds, sreten.
The enclosure can be much larger that I initially anticipated. Now looking for a driver that will work with the following maximum external dimensions: 8.5"W 12"T and 7.5"D. Assuming 3/4" MDF or Ply leaves me with about 7.22L to work with.
So, I suppose I could go up to a 6" driver. What do the knowledge gods have for me? 😉
So, I suppose I could go up to a 6" driver. What do the knowledge gods have for me? 😉
Had to chime in on this one......Have sneak peek at the Aurasound NS3-193-8A1 3"....which is essentially the NS3.
Francesco Campedelli T-Line - YouTube
Francesco Campedelli T-Line - YouTube
I'm leaning towards the MA CHR/CHP70 in the "golden ratio" enclosure listed on the MA website. it's a bit taller and wider than I wanted to go but I have the room so why not. is the CHR considered hot, harsh or bright on the top end? I like detail but fatiguing is something I avoid at all cost.
Not looking to get too complicated on this one so a two way is out.
Not looking to get too complicated on this one so a two way is out.
I haven't heard the CHR-70, but I have a pair of CHP-70s in a slim golden ratio cabinet. Far from fatiguing. I love 'em. I just bought a second pair along with a pair of Alpair-7s. I'm going to try both in a Frugal-Horn. I'm not a heavy metal or hard rock guy, but for vocals and acoustic guitar, they are awesome. Other music I listen to is Steely Dan, Dire Straits, Smooth Jazz.
Like I said, I love the CHP-70s.
Mike
Like I said, I love the CHP-70s.
Mike
You have a few different options to name just two.
Fostex FF105WK 4" Full Range
Faital Pro 5FE120
The problem with this driver (it's not a FR) as you will find, is the alignment. PR or aperiodic are more practical vs. using it in BR ie., for a extra long port.
Parts Express @ Amazon.com: Faital Pro
or better since that 5" is a mid driver, the FR Faital Pro 4FE32.
Anyway for 80Hz response I would go with a lower Fs than in practice that what you have.
This will be perfect also, (F3=76Hz in a 7L BR - price £20.36 ex VAT), if you can find it in the US, this is.
Monacor SPH-64X/AD
http://www.bluearan.co.uk/index.php?id=MON101380
Fostex FF105WK 4" Full Range
Faital Pro 5FE120
The problem with this driver (it's not a FR) as you will find, is the alignment. PR or aperiodic are more practical vs. using it in BR ie., for a extra long port.
Parts Express @ Amazon.com: Faital Pro
or better since that 5" is a mid driver, the FR Faital Pro 4FE32.
Anyway for 80Hz response I would go with a lower Fs than in practice that what you have.
This will be perfect also, (F3=76Hz in a 7L BR - price £20.36 ex VAT), if you can find it in the US, this is.
Monacor SPH-64X/AD
http://www.bluearan.co.uk/index.php?id=MON101380
Last edited:
- Status
- Not open for further replies.