A good while back I bought two of the Solen AP-016B amplifiers on sale. I can't find them online anymore but they are a plate amplifier with woofer and tweeter sections, crossover is 4th order at 2.7kHz. Accepts line in on a RCA input, woofer and tweeter volume are independently tweakable.
I had seen a project Jeff Bagby had done with two RS180s and an RS28. He used a very similar amplifier with a slightly higher crossover of 3.0 kHz.
Details on building the speaker below -
Techtalk Speaker Building, Audio, Video Discussion Forum
I was also looking at the RS series but I was imagining needing to use the smaller RS125 or RS150, nonetheless he indicated that he was quite happy with the RS180 even at 3.0 k crossover and also found the notch filter to control breakup was not necessary.
From this, I believe the RS180 may be just fine at 2.7k with the 4th order crossover.
More on my specific application:
Any thoughts or problems I am overlooking here?
I had seen a project Jeff Bagby had done with two RS180s and an RS28. He used a very similar amplifier with a slightly higher crossover of 3.0 kHz.
Details on building the speaker below -
Techtalk Speaker Building, Audio, Video Discussion Forum
I was also looking at the RS series but I was imagining needing to use the smaller RS125 or RS150, nonetheless he indicated that he was quite happy with the RS180 even at 3.0 k crossover and also found the notch filter to control breakup was not necessary.
From this, I believe the RS180 may be just fine at 2.7k with the 4th order crossover.
More on my specific application:
- I was hoping to build a horizontal MT desktop monitoring style stereo setup. I do some podcast production and listen to music. It will replace my simple sealed M3N monitors (see photo).
- Planning to use the 4-ohm RS180 or possibly 4-ohm RS150 mid-woofer
- I have some extra Creative Sound LD22s, I can't see any reason they wouldn't be a reasonable choice.
- I don't need terribly deep extension and I can EQ on bottom end, therefore thinking sealed to keep box size smaller. Cannot imagine excursion being issue because volume is low and distance is short.
- I can adjust for baffle step compensation via EQ on the PC. But considering the proximity to the wall I don't believe much compensation is needed.
- Have access to a calibrated microphone so should be able to spot and adjust for reasonable variations in frequency response.
Any thoughts or problems I am overlooking here?
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You should be ok with a 2.7Khz 4th order crossover with regards to RS cone breakups.
The LD22 should be outstanding with those mid-woofers.
If you don't need deep bass, the RS150 will be a good solution.
If you can spend a bit more, the SB Satori MW13 is fantastic for small monitors.
you might want to treat the side walls and maybe behind the LED screens with some absorption panels. That will help FR and imaging a lot.
Hope this helps.
The LD22 should be outstanding with those mid-woofers.
If you don't need deep bass, the RS150 will be a good solution.
If you can spend a bit more, the SB Satori MW13 is fantastic for small monitors.
you might want to treat the side walls and maybe behind the LED screens with some absorption panels. That will help FR and imaging a lot.
Hope this helps.
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Thank you for the feedback.
That Satori does look very nice, but unfortunately is out of my budget at this point.
I am debating between a ported RS150 or a sealed RS180, leaning towards the 180. The other option is the CSS LDW7 which I have available here as well, I was reluctant to use those due to the 8-ohm impedance though, the Solen amp is capable of more power at 4-ohm and the RS180 is available in that configuration.
Any thoughts on paper vs aluminum in the RS series?
That Satori does look very nice, but unfortunately is out of my budget at this point.
I am debating between a ported RS150 or a sealed RS180, leaning towards the 180. The other option is the CSS LDW7 which I have available here as well, I was reluctant to use those due to the 8-ohm impedance though, the Solen amp is capable of more power at 4-ohm and the RS180 is available in that configuration.
Any thoughts on paper vs aluminum in the RS series?
I'm thinking of using the RS180 for a closed box as well because of it's high Qes. The RS150 looks way worse for a sealed design.
If you want to go 5 or 6", the SB Acoustics N(B)AC and NRX are excellent as well, albeit more suited for ported design.
If you want to go 5 or 6", the SB Acoustics N(B)AC and NRX are excellent as well, albeit more suited for ported design.
Extension on the RS150 did not look good to me. RS180 in 16 liters sealed shows -3dB at 60Hz, -6dB at 45. May actually respond well next to the wall and even if not, shouldn't be much EQ needed.
16 liters seems like a pretty sensible size too.
40-45 Hz would be plenty of extension for my purpose.
16 liters seems like a pretty sensible size too.
40-45 Hz would be plenty of extension for my purpose.
I wish there was some feedback on using the LDW7 at that higher cut-off point. It's typically crossed over about 1.9 or 2k but not as steeply.
RE: RS150 - I built a ported TM with the RS-150-4 in 14 liters, and it rocks.
F3 around 46Hz
Should be (and is) plenty for small room. Goes louder (clean) than I can stand.
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Understand about budget. It's a concern for (almost) every build.
I haven't heard the RS150P or RS180P, but have seen very positive feedback on those drivers. I did purchase a RS125P (for use as a midrange) and it sounded great, very smooth FR, very low distortion. On that basis, I don't hesitate in recommending the larger sizes in paper/kevlar cones.
Hope this helps.
Thanks very much for all the feedback.
I am really interested in going sealed, either with the RS180 (Al or paper) or the LDW7. CSS indicated that the LDW7 doesn't have any nasty breakups that should affect the response but that directivity would be a concern, not sure if it's an issue in my case though because I'll be able to get a very good aiming angle.
I am really interested in going sealed, either with the RS180 (Al or paper) or the LDW7. CSS indicated that the LDW7 doesn't have any nasty breakups that should affect the response but that directivity would be a concern, not sure if it's an issue in my case though because I'll be able to get a very good aiming angle.
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The RS180-4 and LDW7 look almost identical at 16 and 12 liters respectively.
The RS180 is appealing for the 4-ohm option allowing more power, and also the look (haha shouldn't matter but it does).
But the LDW7 allows smaller enclosure, and I also already have some so no cost....
The RS180 is appealing for the 4-ohm option allowing more power, and also the look (haha shouldn't matter but it does).
But the LDW7 allows smaller enclosure, and I also already have some so no cost....
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I use it right now in my main home theater rig. That's a 5.1 setup based around the creativesound V-series kits (which use the smaller VWR126X mid-woofer). It's been great there, no concerns.
Tricky part will be finding a good way to mount these, I don't have confidence in those shelves to hold much more weight.
I also need to investigate if the tweeter should be wired in reverse polarity....
Tricky part will be finding a good way to mount these, I don't have confidence in those shelves to hold much more weight.
I also need to investigate if the tweeter should be wired in reverse polarity....
I am feeling that giving my wallet a break may be a good option. Therefore the LDW7 is going to be my choice. I really hope to try out the Dayton RS series soon though, they are a very appealing driver.
I want to go with a small and tight baffle for this one. 12" wide, 9" tall. Still settling on depth.
I want to go with a small and tight baffle for this one. 12" wide, 9" tall. Still settling on depth.
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Thanks, it's funny cause I have the LDW7 in my main living room rig but I don't know much about its character because I cross it over at only 275Hz to an Alpair 5.
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