Jorge wrote:

Lets just say that TH  bass is much cleaner and generates a different "bass sensation" in the room.  Once you get used to it, it is very difficult to go back to boxed bass. I find the sound similar to what a Mid bass horn woud play.

Jorge wrote:

Romy what differences in sound did you find when you changed from your Scanspeak Bass array to the big MB horns?

Jorge wrote:

Now if you design a TH for 70 hz, you can use it from 35 hz up to 140 hz,  and that could match up to your 142hz front Upper Bass horn. With this solution you completely eliminate the need for a Folded horn midbass channel,  that was my point since the begining.

Macman, the “annoying peaks above the usable frequency range” is something that your specific installation might have in context of your room and your acoustic system location but it might not be a characteristic of tapped horns. I do feel that tapped horns might be more room picky as the radiation surface is very small in them.  In your correct case of dipole it is for sure more room forgiving.

Romy the Cat wrote:

Macman, the “annoying peaks above the usable frequency range” is something that your specific installation might have in context of your room and your acoustic system location but it might not be a characteristic of tapped horns. I do feel that tapped horns might be more room picky as the radiation surface is very small in them.  In your correct case of dipole it is for sure more room forgiving.

Jorge wrote:

Actually a Tapped Horn would be bigger than a sealed enclosure,  here is one of my first TH tests.  The sound is very different than the sound coming form a Sealed encolsure.  My first impression was that the bass was gone!  There was no bass sensation in the room anymore, no chest thumping, lets say (which is a wrong term). After a while you realize that the bass is there and all the frequencies played by the instruments are present,  it sounds like a bass is playing in the room,  but we have grown accostumed to hearing sealed and ported enclosure bass, and IME this bass generates a sort of accompanying bass sound that is not generated by any instrument,  a sort of fat bass sound that can be very rewarding.  Lets just say that TH  bass is much cleaner and generates a different "bass sensation" in the room.  Once you get used to it, it is very difficult to go back to boxed bass. I find the sound similar to what a Mid bass horn woud play.  Romy what differences in sound did you find when you changed from your Scanspeak Bass array to the big MB horns?

Rewind wrote:

Macman: Maybe your tapped horns were too small. Speedysteve is absolutely in love with his, and you and him have a very similar setup with your 15" upper midbass horn and all.

Macman wrote:

Rewind wrote: Macman: Maybe your tapped horns were too small. Speedysteve is absolutely in love with his, and you and him have a very similar setup with your 15" upper midbass horn and all. Yes, Im sure you could make them better. I believe I was a little greedy when I designed them. I think I should have settled with a 10Hz higher cutoff. I have heard two tapped horns and they both have that the same issues that I wrote about above. As Romy stated of course it might be the room but I wont go back to Tapped horns, been there... moving on /Marcus

speedysteve wrote:

I have found that 8th order X/O works best with them and I cross at 90Hz these days.  4th order is ok but you get minor colourations and some bleed through that just aren't a distraction on 8th order. The bass horn takes over form there and it gels very well for me. I also found them unusable in an average UK sized room  without  a couple of PEQ corrections to fix room modes / tune to my taste.  Once done, the bass weight, speed / impact and depth are to my liking.

Romy the Cat wrote:

speedysteve wrote: I have found that 8th order X/O works best with them and I cross at 90Hz these days.  4th order is ok but you get minor colourations and some bleed through that just aren't a distraction on 8th order. The bass horn takes over form there and it gels very well for me. I also found them unusable in an average UK sized room  without  a couple of PEQ corrections to fix room modes / tune to my taste.  Once done, the bass weight, speed / impact and depth are to my liking. Hm, the 8th order high-pass X/O mixed with low pass upper bass horn? This is very strange. I do not know the taped horn’s upper knee character but from what you do, suffocating the uppperbass’s upper bass it does not sound that taped horn is too pretty.

speedysteve wrote:

Well, I think it is horses for courses and the tapped horns are a bit of a different gigi.     I found it is imperative to suffocate the rubbish that is coming out of tapped horns above say 100Hz - mine are sized to work from around 20Hz to 90Hz. Below this there is great bass deep bass to be had - well at least I like it.      The mid bass / upper bass I do not use such a slope. 2nd order on the upper knee of my bass at 330Hz and same for the lower knee of the mid horns. Above that I like 2nd order and then on the upper mids and tweeter 1st order. That is the current set.

Romy the Cat wrote:

speedysteve wrote: Well, I think it is horses for courses and the tapped horns are a bit of a different gigi.     I found it is imperative to suffocate the rubbish that is coming out of tapped horns above say 100Hz - mine are sized to work from around 20Hz to 90Hz. Below this there is great bass deep bass to be had - well at least I like it.      The mid bass / upper bass I do not use such a slope. 2nd order on the upper knee of my bass at 330Hz and same for the lower knee of the mid horns. Above that I like 2nd order and then on the upper mids and tweeter 1st order. That is the current set.   Ok, the upperbass that you have I think it was something around 125Hz. Regardless what kind profile and size of the horn you have we all know what kind lower knew decay uppperbass has, even in a smallish room it is “large” but  “thin”.  Then you have LF section, the trapped horn that you decided to stop with brick-filter. That reasonably long tail from LF is important in my view. If you have rubbish out of tapped horns above 100Hz then it is problem of tapped horn, not the problem of uppperbass.  The brick-filter shall swing phase super violently in addition to everything else… Anyhow, I would not use any topology that demands 8th order filter. I wonder: at 90Hz the trapped horn makes “good bass”   but at 120Hz it gives rubbish? Are you listening mostly rick-n-roll?