what thd with only some watt ? have you hever misure the real volt out of power amp and db ??
Hi i promise last one ... a little OT i am afraid I am looking at the very best 3 ways studio monitors on a shop website They are called midfield monitors
They come with both cone and dome midrange drivers depending on brand and model
But interesting enough the range covered by the mid driver is almost always from about 500 Hz and 3 kHz
I guess that behind this design choice there must be some kind of reasoning that i really dont know
If this can be confirmed for me is a very important design requirement This could be one reason why the Atc monitors are so famous
They have a truly excellent driver covering exactly that range with very low distortion also at high SPLs
They come with both cone and dome midrange drivers depending on brand and model
But interesting enough the range covered by the mid driver is almost always from about 500 Hz and 3 kHz
I guess that behind this design choice there must be some kind of reasoning that i really dont know
If this can be confirmed for me is a very important design requirement This could be one reason why the Atc monitors are so famous
They have a truly excellent driver covering exactly that range with very low distortion also at high SPLs
500 to 3k is a good range for a midrange driver... but don't assume that purchasing decisions in Pro Audio are immune from the effects of fads, fashions, preconceptions, and bias. Maybe it is just fashionable for midfield monitors to have a 500-3k midrange, and the speaker manufacturers are giving the customers what they want... customers being recording engineers and studio owners.
hi i see Still i wonder if there is any rationale behind this choice
i guess it has to do with voice playback?
don't know really
i guess it has to do with voice playback?
don't know really
Hi,
I used 500/3k for my 3-way (12MU as midrange driver) and never tried lower (300Hz will probably also work fine) because it sounds so nice that I never found the need to change the crossover for a try.
When chosing the X-over I never go by "decision"- I look what the drivers "offer" me for smooth transition. 5-600Hz was fine here because it blends nice with the baffle step. When crossing lower I would have to lift the MU at lower frequencies somewhat. With a wider baffle a lower frequency may also work well.
Regards J-C
I used 500/3k for my 3-way (12MU as midrange driver) and never tried lower (300Hz will probably also work fine) because it sounds so nice that I never found the need to change the crossover for a try.
When chosing the X-over I never go by "decision"- I look what the drivers "offer" me for smooth transition. 5-600Hz was fine here because it blends nice with the baffle step. When crossing lower I would have to lift the MU at lower frequencies somewhat. With a wider baffle a lower frequency may also work well.
Regards J-C
to provide a flat response up to 3k the cone can't be that big. A 4" max 5" cone
or a dome of course
i would look at the frequency response sensitivity and also a fav of mine The Qts
I love very low Qts drivers
it's a little like the weight vs power ratio in car
a big acceleration needs low weight and high power
or a dome of course
i would look at the frequency response sensitivity and also a fav of mine The Qts
I love very low Qts drivers
it's a little like the weight vs power ratio in car
a big acceleration needs low weight and high power
Yeah, Bell Labs spent considerable time/$$ concluding that the 250-2500 Hz decade for analog and 300-3000 Hz decade for digital phone BWs were all that was required for high speech intelligibility, so add an octave on each end for XO blending and we ideally need a nominally flat ~1250 - 6000 Hz BW for ~250/3000 Hz XO points.
Using the mean for polar matching we get a ~(250*3000)^0.5 = ~866 Hz or a ~13543/pi/866 = ~5" effective piston diameter, so ~6" frame mid driver, which at a glance the Faital Pro 6FE200 is plenty close enough, though lots to choose from.
If set on a higher and/or lower XO point(s), then adjust driver size to suit.
You can match the driver size and the baffle width to stretch the limit a bit to higher frequencies.
But I always found a 6/7“ not good sounding with crossing 3k. Max 5“, and even the I prefer lower. 4“ and 3k works fine, but I would not cross higher here.
But I must say that I do not listen very loud, so I dont have to care about the tweeter…
But I always found a 6/7“ not good sounding with crossing 3k. Max 5“, and even the I prefer lower. 4“ and 3k works fine, but I would not cross higher here.
But I must say that I do not listen very loud, so I dont have to care about the tweeter…
A good 5" do not have problem at 2.5k like scan speak 15w revelator ,he have a bigger sd too....
btw a good 12" or 10 at 7/800hz for fine 3way with decent but chapers drome to 3k
I think that an ideal three way would be a very wide/broad range mid driver with a helper woofer and a helper tweeter. Woofer would roll in below 7o Hz. and the tweeter would roll in above 6KHz (the higher the better). This way the mid driver covers all the fundamentals by itself and only uses the woofer and tweeter to finish off the two extremes.
Ok… says a 5” driver is “pretty good up to 2 kHz”, and may I point out a 5” driver has usually a radiating diameter less than 4”?
If 5" is perfect till 2kHz, it can easily be crossed at 3kHz, assuming its response is already lower at crossover frequency, as summing with tweeter needs to be flat.
I used Aurum Cantus, little bigger 5", all the way to 5kHz. Same for FaitalPro 6fe200, 6", which i often use both without filter, since they have minor breakups. All depends on breakups and slope used.
Again, my active crossover is 300/3k. The more midrange covers, the more coherent the speach/singing is.
I used betsy wow, which is whizzerectomized fullrange, all the way to 7kHz, with ribbon. All depends on individual driver, its beaming and breakups.
I used Aurum Cantus, little bigger 5", all the way to 5kHz. Same for FaitalPro 6fe200, 6", which i often use both without filter, since they have minor breakups. All depends on breakups and slope used.
Again, my active crossover is 300/3k. The more midrange covers, the more coherent the speach/singing is.
I used betsy wow, which is whizzerectomized fullrange, all the way to 7kHz, with ribbon. All depends on individual driver, its beaming and breakups.
Hi yes this would be the best for coherence being a single driver But what about IMD?
If the driver has to playback a strong low frequency and higher Hz signals IMD could be an issue?
Here is famous vifa 5" pwh13 used at exactly 3kHz crossover
https://mainkas.tripod.com/page/audio/esquire/esquire.htm
https://mainkas.tripod.com/page/audio/esquire/esquire.htm