Hey just wondering what would be a good sealed enclosure size for the Rosso-6MW150D crossover is 500hz - to around 3khz might use stuffing might not use it I have 34l of sealed space in my 3 way towers just for the tweeter and midrange separate enclosure I want to divide up the space so it’s enough but not too big or small for the midrange speaker can anyone help please
Thank you
Thank you
The Rosso has VAS=8,8 liters and Qts=0,32, so without looking further the driver is fine with small volumes down to 3-4 liters from a TSP perspective.
However, the TSP and the correnpondent tuning is relevant for the behavior around the resonance frequency, but you plan to use the driver from 500Hz and that is far away from fs. So the volume and resulting system Qtc is almost irrelevant for this high xover frequency.
Personally, I like larger, well damped midrange enclosures so the sound coming from the mid gets absorbed well before reflected back to the cone. The proposed 12 liters look good for me for this approach.
However, the TSP and the correnpondent tuning is relevant for the behavior around the resonance frequency, but you plan to use the driver from 500Hz and that is far away from fs. So the volume and resulting system Qtc is almost irrelevant for this high xover frequency.
Personally, I like larger, well damped midrange enclosures so the sound coming from the mid gets absorbed well before reflected back to the cone. The proposed 12 liters look good for me for this approach.
Thank you very much would you go more then 12 litres plus what do you think would go better with this woofer XT25TG30-04 or XT25BG60-04 one has a lower FS there’s also a neo version but looks a bit small if I ever want to replace it it would be difficult to cut out hole bigger so if I went with the full size one I think would be better because there’s plenty of tweeters that are similar cut out size cheers Ricky
See your profile photo I was going to align the speakers like that have the woofer/midbass in center at the bottom and have the mid and tweeter off center together but not sure about spacing between the speakers
The best I can do is 16 litres I’ll have to fill in some spots with wood like the corners to brace and take to some space I’ll try and get down to 15 litres but I don’t know if 15 litres is too big
This is the Rosso in different enclosure sizes (TSPs from SB audience, 0,5 Ohms series resistance from xover, 20% stufffing):
You see, the behaviour >500Hz is neary not affected by the volume. Also, once above 8 liters the behaviour < 500Hz is varying not much when the volume is increased. So for midrange application, the enclosure volume is rather uncritical, you have a wide range to choose from. Personally, I would give it >= 10 liters to have enough stuffed volume to absorb the rear sound of the mid poperly, but I would let me also drive by a meanigful construction design of the cabinet.
You see, the behaviour >500Hz is neary not affected by the volume. Also, once above 8 liters the behaviour < 500Hz is varying not much when the volume is increased. So for midrange application, the enclosure volume is rather uncritical, you have a wide range to choose from. Personally, I would give it >= 10 liters to have enough stuffed volume to absorb the rear sound of the mid poperly, but I would let me also drive by a meanigful construction design of the cabinet.
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About half way up the towers on the left or right side I can get a tune of 50-60hz for the woofer I I can change the crossover to a lower point if I need to
I’m not sure which tweeter would be best for my application XT25TG30-04 or XT25BG60-04 one is a bit cheaper one has a larger rear chamber and a higher Fs of about 200hz more compared to the more expensive smaller rear chamber idk what to get out of these 2 tweeters for my 3 way tower speakers
I had to tune the midbass/10” woofer port to about 45hz -47hz I really should of planned out the internal space more lol I kinda winged it
Internally it’s 1.1 cubic foot ish port width 47mm port height 142mm port length about 230mm it’s going to be a bit more probably 248mm because of baffle but I’ll round off the edges back to around 235mm hopefully or I can 3D print a front part that screws in to the port area and have that recessed in to the baffle
Internally it’s 1.1 cubic foot ish port width 47mm port height 142mm port length about 230mm it’s going to be a bit more probably 248mm because of baffle but I’ll round off the edges back to around 235mm hopefully or I can 3D print a front part that screws in to the port area and have that recessed in to the baffle
Internal midrange enclosure is 0.565 Cf or 16 litres after midrange is installed I just have to find a place in Australia that sells speaker enclosure stuffing or try and buy from overseas
This is the crossover I’m using https://x.alibaba.com/15rCzJ?ck=pdp
It’s a 3 way crossover it’s crossover at 500hz and down for the 10” woofer 500hz to 3khz for the Rosso midrange and 3khz and up will be capping it off at around 16khz to 17khz with my dsp idk if i should let the woofer roll off using the crossover or use a band pass on the dsp say 60hz or 80hz upto 16khz or 17khz
I could be mistaken it might be 3.5Khz not 3Khz I on the crossover can’t remember its been a while since i purchased them
It’s a 3 way crossover it’s crossover at 500hz and down for the 10” woofer 500hz to 3khz for the Rosso midrange and 3khz and up will be capping it off at around 16khz to 17khz with my dsp idk if i should let the woofer roll off using the crossover or use a band pass on the dsp say 60hz or 80hz upto 16khz or 17khz
I could be mistaken it might be 3.5Khz not 3Khz I on the crossover can’t remember its been a while since i purchased them
The 6MW150D is a really nice midbass driver considering the price, especially for dedicated midrange. Good amount of xmax too. It does suffer from rather pronounced sharp breakups around 4k and 7k which need to be notched with an LCR, even with lower LP filters. Listen to the driver running unfiltered and you'll know what I'm referring to.
The basket is also susceptible to resonances, even when bolted down. I recommend supporting the magnet when mounting the driver. The frame casting is on the thin side for such a large motor. This driver can play LOUD and clean. I've seen less than 1% HD at 100 dB crossed above 300 hz. Its a very underrated driver.
The TSPs on this driver run on the lower end of tolerances. Qts is usually lower than 0.30 on broken in drivers and Fs tend to hover around 63hz when its settled in.
The basket is also susceptible to resonances, even when bolted down. I recommend supporting the magnet when mounting the driver. The frame casting is on the thin side for such a large motor. This driver can play LOUD and clean. I've seen less than 1% HD at 100 dB crossed above 300 hz. Its a very underrated driver.
The TSPs on this driver run on the lower end of tolerances. Qts is usually lower than 0.30 on broken in drivers and Fs tend to hover around 63hz when its settled in.
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Any bed or mattress store will sell urethane foam padding which works excellent as dampening material applied to the enclosure walls. Dont use fiberglass or rockwool dampening unless covering the back of the driver with grille cloth or nylon panty hose - the fibers can end in the exposed VC gap, contaminating it.
Thank you crossover for midrange is 500hz - 3khz ill support the magnet with some mdf i cant wait to finish building the speakers