i am building some new MTM mains to go with my new sub, but I was wondering what sort of success I would have with online crossover calculators which calculate the component values.
I am wondering if I should place the tweeter slightly to one side or the other, and how to determine what side to place it on and how far to place it off-center
I am wondering if I should place the tweeter slightly to one side or the other, and how to determine what side to place it on and how far to place it off-center
(shameless bump)
What sort of crossover topology should I shoot for if the low frequency for the tweeter is 2000 Hz and the highest-frequency of the woofer is 3500 Hz? I'd like a steep rolloff between the woofers and the tweeter. The 2 woofers are 4-ohms, and they will be wired in series to present the 8-ohm load to my reciever (which heats up like crazy if the impedance is too weird)
I've already got a pretty high bar set for me. My current speakers are Pioneer cone tweeters and 8" poly cone woofers loaded into some Fried Model Q speaker cabinets. The transient response is excellent, and the cone tweeters are the most detailed cone tweeters I have ever heard. The sound is amazingly non-fatiguing, and yet the detail is superior over most anything else I have heard. They are even more pleasant for me to listen to than the JBLs that they have at the Best Buy. I play a wide variety of music, and through all the muic (ranges from punk and ska (with sizzling horns) to acoustic guitar, to orchestral stuff, big band jazz, and just about everything in between) these speakers provide sonic accuracy and transient response the likes of which I cannot find in speakers in this price range, and a clean, full midrange. I am intending for these new speakers I am building to have an even better sound than these. No matter how good my cone tweeters are, they're still cones. The tweeters on my new speakers will be Seas aluminum-dome tweeters. The woofers will be 5.25" units from the Parts Express - Definitive Technologies buyout. I heard the Definitive speakers at the local Ovation store and was practically spellbound by their clear, detailed sound.
I am definitely feeling the pull towards more high-quality, detailed and musical-sounding speakers, and I intend to satisfy that with this project.
What sort of crossover topology should I shoot for if the low frequency for the tweeter is 2000 Hz and the highest-frequency of the woofer is 3500 Hz? I'd like a steep rolloff between the woofers and the tweeter. The 2 woofers are 4-ohms, and they will be wired in series to present the 8-ohm load to my reciever (which heats up like crazy if the impedance is too weird)
I've already got a pretty high bar set for me. My current speakers are Pioneer cone tweeters and 8" poly cone woofers loaded into some Fried Model Q speaker cabinets. The transient response is excellent, and the cone tweeters are the most detailed cone tweeters I have ever heard. The sound is amazingly non-fatiguing, and yet the detail is superior over most anything else I have heard. They are even more pleasant for me to listen to than the JBLs that they have at the Best Buy. I play a wide variety of music, and through all the muic (ranges from punk and ska (with sizzling horns) to acoustic guitar, to orchestral stuff, big band jazz, and just about everything in between) these speakers provide sonic accuracy and transient response the likes of which I cannot find in speakers in this price range, and a clean, full midrange. I am intending for these new speakers I am building to have an even better sound than these. No matter how good my cone tweeters are, they're still cones. The tweeters on my new speakers will be Seas aluminum-dome tweeters. The woofers will be 5.25" units from the Parts Express - Definitive Technologies buyout. I heard the Definitive speakers at the local Ovation store and was practically spellbound by their clear, detailed sound.
I am definitely feeling the pull towards more high-quality, detailed and musical-sounding speakers, and I intend to satisfy that with this project.
The FRD consortium is a group of software developers who make freeware programs for loudspeaker design. there are two crossover programs at the page. One is Crossover Simulator by F4ier, a member here. I have not yet figured out that program. His Subwoofer Simulator, downloadable at the same site, appears to be the best freeware program available for designing boxes-sorry, TL not included.
Passive Crossover Design Calculator looks like an excellent program, but my computer does not have a new enough version of Excel. I have Excel 95-you need newer. Looks good, though.
Both are downloadable at:
http://www.pvconsultants.com/audio/frdgroup.htm
Speaker
Workshop by Audua draws raves from those who have set it up. I have not done so. I plan to try again.
www.audua.com
WinISD gives a simple calculator fro crossovers as well.
www.linearteam.dk
I have not done an MTM design, and I do not know how the spacing there affects the sound. My personal advice would be to do a web search for the Seas tweeter you plan to use, and see if there is a successful MTM design you can copy. Just write the model number of tweeter into Google and see what comes up. It does not have to be with a Pioneer woofer, just see the circuit for say, a third order crooosver at 2500 Hz for the tweeter in an MTM design with another woofer pair.
Is the Seas the only tweeter you can consider? You might try making a short list of tweeters you like and trying a web search for successful MTM designs using each one.
Passive Crossover Design Calculator looks like an excellent program, but my computer does not have a new enough version of Excel. I have Excel 95-you need newer. Looks good, though.
Both are downloadable at:
http://www.pvconsultants.com/audio/frdgroup.htm
Speaker
Workshop by Audua draws raves from those who have set it up. I have not done so. I plan to try again.
www.audua.com
WinISD gives a simple calculator fro crossovers as well.
www.linearteam.dk
I have not done an MTM design, and I do not know how the spacing there affects the sound. My personal advice would be to do a web search for the Seas tweeter you plan to use, and see if there is a successful MTM design you can copy. Just write the model number of tweeter into Google and see what comes up. It does not have to be with a Pioneer woofer, just see the circuit for say, a third order crooosver at 2500 Hz for the tweeter in an MTM design with another woofer pair.
Is the Seas the only tweeter you can consider? You might try making a short list of tweeters you like and trying a web search for successful MTM designs using each one.
Here's something useful, but I am not sure if these guys ever did a full measurement at the end of the project.
http://www.acc.umu.se/~sagge/audio/supreme/
http://www.acc.umu.se/~sagge/audio/supreme/
This guy used a Seas tweeter, but not an aluminum one. substantial measurement done after. Check to see if the Seas aluminum dome model has similar characterisitics-many manufacturers vary the dome material but keep the parameters the same between several models.
http://home.new.rr.com/zaph/audio/audio-speaker10.html
The bass loading-sealed, ported, or transmission line-won't affect the crossover one bit.
http://home.new.rr.com/zaph/audio/audio-speaker10.html
The bass loading-sealed, ported, or transmission line-won't affect the crossover one bit.
Seems to me that the Seas Embla is a project that uses the H537 dome tweeter. The H537 tweeter is placed exactly in the middle between the two side edges of the baffle. So is it up to me, then, to decide where to place the tweeter on the baffle?
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