Mine works very well from the first try, to my surprise. And that is a big part due to the good info that Scott gave me, and by studying it further on the site of Martin King. And i simulated a lot and calculated manually even more before i did build it. The final plywood build will be the same as my first try in mdf i think, as i'm enjoying that set a lot. I hardly did listen to my other setups the last 2 weeks to be honest (but that is because it's new i guess). I'm planning to publish the plan later (first need to get in in cad drawings and i can't do that myself).
But for TL's, use an existing plan, or study it good. It's not as easy as a sealed or a vented cab to design. And don't trust those online calculators, they are not accurate. Hornrsp or TLLine (or if you can find it) the mathcad files from Martin King do it right.
Probably due to Mark being anal about use's getting the ost out of his drivers.
Typical MA drivers take about 100 hrs low level to get to operating parameters, A10.3 gets better over 500-1000 hrs and the new single suspension models Mark suggests 10 hrs, which would point to the suspension breaking in as the primary place where break-in plays a role.
The guy who designed the MA spiders is not averse to designing spiders that take a long time to settle down, according to him as much as 1500 hrs (a Fostex not a MA).
dave
Scott is one of the most experienced and talented TL designers today.
dave
PS: i have my drawing capabilities back and do have to get to your WAWs. An ML-TL is an easy job.
Well, if you have time, give me a shout and i send you the same kind of info like i did for the waw...
lacking high frequencies
hi again,
So far so good. I added more damping to my speakerboxes and the sound did improve. Still having a problem with the high frequencies. When running a herz test (stepping up the whole range), the highs seem to do ok. (My hearing stops around 10.000 herz, but that is due to being an older person 🙂 )
When I add a 1 inch tweeter to my setup, the difference is significant. When listening to a harpsichord recording typically producing high frequency, the higher notes are topped off and only the tweeter seems to reproduce them.
Has anyone a similar experience ?
Thanks.
hi again,
So far so good. I added more damping to my speakerboxes and the sound did improve. Still having a problem with the high frequencies. When running a herz test (stepping up the whole range), the highs seem to do ok. (My hearing stops around 10.000 herz, but that is due to being an older person 🙂 )
When I add a 1 inch tweeter to my setup, the difference is significant. When listening to a harpsichord recording typically producing high frequency, the higher notes are topped off and only the tweeter seems to reproduce them.
Has anyone a similar experience ?
Thanks.
Perhaps…
I tried it many times and in some situations it helps but often degrades things.
Everything is a compromise.
dave
I tried it many times and in some situations it helps but often degrades things.
Everything is a compromise.
dave
Well, i don't miss nothing, and when i run it next to a multiway speaker i have (a classic and very good 1970's Goodman Mezzo SL with the infamous Seas H087 tweeter and a Goodman 10" woofer that is recently refurbished) i don't hear much less hi. So i think you do someting wrong with this speaker. Did you measure yours or run it outside your box to test?
hi waxx, no I did not run it outside the box, nor did I measured it. I do not have the equipment to do so. The only thing I did was running a herz steptest found on youtube. That seemed ok to me. No filters or crossover used, just connected straight to the amp.
Probably best thing to do is to let them run in for a while and see if anything improves.
It is not that the highs are missing, but is not bright enough.
Thanks for your reply.
Probably best thing to do is to let them run in for a while and see if anything improves.
It is not that the highs are missing, but is not bright enough.
Thanks for your reply.
Well, you said your hearing is going back, that may be the reason. These speakers are rather neutral. If you want bright drivers to compensate for your loss of hearing, you need to try other drivers. Fostex is very bright, Mark Audio Alpair metal cones (like the 7.3 or the 10.3) are also brighter, but not as bright as many fostex drivers are. The CHN110 is not as you can see on the response graph published (and Mark Audio is rather accurate on that).
Attachments
If it wasn't for Covid, i would say, pass by and come listen (i live about an hour and a half from you and i speak Dutch altough i'm living in Wallonia). I have both the Alpair 10.3 and the CHN110 at home, and the Alpair 10.3 unfiltered is much brigher, without being sharp.
I know this is a somewhat old thread but I'm bringing it back to life to ask a question about an enclosure which hasn't been discussed. Has anyone thought about putting the '110 in a BIB? I put the numbers in the BIB spread sheet and from what I see, they look reasonable. The internal calculations were: Line length = 152.45 in., Depth = 13.70 in., Width = 9.69 in. This gave an Corrected internal height of 77.70 in. The room I'm going to be putting these in is on the smallish side but they can go into the corners of the shorter dimension. The ceiling height is probably 99 in. (normal 8ft. 3 in.). I assume bass will be adequate or will this be "Bass, Bass, All Over The Place Bass"?
I know several of you on this thread are familiar with the BIB (Yes, I read the whole thread! And have forgotten some of it.) so I would really appreciate your thoughts.
Thanks for any insights any of you might have.
Ken
I know several of you on this thread are familiar with the BIB (Yes, I read the whole thread! And have forgotten some of it.) so I would really appreciate your thoughts.
Thanks for any insights any of you might have.
Ken
It sounds like with your room it can be made to work. Do expect to have to tame too much bass (not a bad thing, helps reduce ripple as well).
What Zd?
dave
What Zd?
dave
Dave, thanks for the response. Zd is 33.08. With an external height of 78.41, this puts the driver a little over 45 in. from the floor. My seated ear height is 40 in. Will this difference sound like a lack of HF or is the dispersion enough that it won't matter?
Ken
Ken
Dave, thank you so much for the drawing! You have no idea how I really appreciate it. By alternative Zd do you mean the Corrected Z-driver from the spread sheet calculator? If so, that is 35.70 in.
Thanks again.
Ken
Thanks again.
Ken
No, that is too close to the other one. I usually look at the 2 tap points (zd), sometimes between the 2 and whether the horn is loading into the ceiling or the floor to achieve a more suitable driver height.
45” is probably too high.
dave
45” is probably too high.
dave
I can tell my CHN110 MLTL has an F3 of 32Hz and an F6 of 29Hz, measured roughly (to much wind) outside a few days ago. I don't think the wind affected the bass response, but it surely did with the top response measured. I'll try again with better weather.
But i do know i play a lot of digital steppers dub with very low (30Hz or even lower) bass and it does play it as good as my waw with a 10" subwoofer does, only not that loud. I'm still surprised how much bass i can get out of that box and this small driver...