Howdy folks! For a mini monitor, I have lately been looking at the Passive Aggressive design (https://www.parts-express.com/Passive-Aggressive-Mini-Speaker-Kit-Pair-300-7148) using the ND91 woofer, dual ND90-PR passive radiators, and the ND20FB tweeter. It's a fun looking little design, and I just kinda want something I can haul around with me, like a Minimus 7 that actually sounds half decent 😛
Anyways, I recently picked up a pair of RS75-4 3" full range drivers (4 bucks for the pair 😎 brand new), and it got me thinking: what if I made a three way speaker using the same drivers as the Passive Aggressive monitor, as well as the RS75's for midrange duty?
My idea is to cross over the woofer at ~500Hz, then the tweeter at 7KHz or so, but having it upward firing. It would be only slightly larger than the Passive Aggressive design, and possibly I would seal the full range away from the woofer, depending on the advice I get here.
I know in a conventional three way I should probably cross over the tweeter lower, but I'm just afraid having it upwards facing will have the speaker losing too much focus if it covers too much of the high range.
This would be my first crossover design, and I definitely am still learning. Based on what I've given you, can anyone tentatively advise me on whether this is an idea worth pursuing? Thanks!
Anyways, I recently picked up a pair of RS75-4 3" full range drivers (4 bucks for the pair 😎 brand new), and it got me thinking: what if I made a three way speaker using the same drivers as the Passive Aggressive monitor, as well as the RS75's for midrange duty?
My idea is to cross over the woofer at ~500Hz, then the tweeter at 7KHz or so, but having it upward firing. It would be only slightly larger than the Passive Aggressive design, and possibly I would seal the full range away from the woofer, depending on the advice I get here.
I know in a conventional three way I should probably cross over the tweeter lower, but I'm just afraid having it upwards facing will have the speaker losing too much focus if it covers too much of the high range.
This would be my first crossover design, and I definitely am still learning. Based on what I've given you, can anyone tentatively advise me on whether this is an idea worth pursuing? Thanks!
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This is the kinda product i do not like. Lots of cheap parts. Appeals to the male, “mine is bigger than yours” syndrome.
I do not like PRs either. For the same budget one could easily buy a pair of superior FRs.
But since you want to eaxcercise the 3:, it probably makes a decent mid.tweeter. Add. apair of appropriate woofers. Use a vent insead of PRs.
I am no fan of Dayton (PE house brand, but not die to the quality of [some] of their products), but this looks to be a good one (and a give away at $4 each i expect)
It doesn’t go low, XO at 400-600 Hz or so. No tweeter means no XO where they typically intrude the most (you will get better top).
Huge number of potential helper woofers, how big a box can you live with?
dave
View attachment 1056847
This is the kinda product i do not like. Lots of cheap parts. Appeals to the male, “mine is bigger than yours” syndrome.
I do not like PRs either. For the same budget one could easily buy a pair of superior FRs.
But since you want to eaxcercise the 3:, it probably makes a decent mid.tweeter. Add. apair of appropriate woofers. Use a vent insead of PRs.
I am no fan of Dayton (PE house brand, but not die to the quality of [some] of their products), but this looks to be a good one (and a give away at $4 each i expect)
It doesn’t go low, XO at 400-600 Hz or so. No tweeter means no XO where they typically intrude the most (you will get better top).
Huge number of potential helper woofers, how big a box can you live with?
dave
I also was thinking of using the same woofer ported. But I saw that design and thought, "well they probably know better than me". You're probably right that my money could be better spent on one good woofer than one decent one with 2 PR's.. what appealed to me though was its similar sensitivity to my full range. I couldn't really find any LF drivers at that size that are as efficient as the ND91. Anyways, I would like to keep it fairly small. Could probably increase the size in any one direction by an inch or so, or just something approximating that. By the way, it was $2 each.. 4 for the pair 🙂. I have other speakers, so I'm not looking for perfection here. Just something small that sounds okView attachment 1056847
This is the kinda product i do not like. Lots of cheap parts. Appeals to the male, “mine is bigger than yours” syndrome.
I do not like PRs either. For the same budget one could easily buy a pair of superior FRs.
But since you want to eaxcercise the 3:, it probably makes a decent mid.tweeter. Add. apair of appropriate woofers. Use a vent insead of PRs.
I am no fan of Dayton (PE house brand, but not die to the quality of [some] of their products), but this looks to be a good one (and a give away at $4 each i expect)
It doesn’t go low, XO at 400-600 Hz or so. No tweeter means no XO where they typically intrude the most (you will get better top).
Huge number of potential helper woofers, how big a box can you live with?
dave
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Have a look at this small 3way:
https://www.diyaudio.com/community/...mall-3-way-with-concussive-tendencies.386164/
https://www.diyaudio.com/community/...mall-3-way-with-concussive-tendencies.386164/
Marketing for sure.
The woofer should typically be 2-4 dB more sensitive than the midTweeter
ok, essentially free.
How small? I have successfully git Silver Flute into 5 litres, a bit bigger means it goes lower. Cheap to (very good value). Also 4-8-16Ω making it easier to get the right sensitivity.
https://www.madisoundspeakerstore.com/approx-5-woofers/silver-flute-w14rc25-08-ohm-5-1/2-wool-cone/
dave