Hello
I have been reading this thread from start. And your Th with Eminence Lab 12 is fantastic.
Any ideas how this sub would perform in Ht.
I have been reading this thread from start. And your Th with Eminence Lab 12 is fantastic.
Any ideas how this sub would perform in Ht.
This design is built for 35hz and up. Not 20hz and up which is needed for HT.
Did you ever build the other pair MR gSR?
Did you ever build the other pair MR gSR?
The 20 Hz response is around 24 dB down from 40 Hz, depending on your room, it may be around 12 dB down at 20 Hz, though there is no guarantee your room will offer low frequency gain at your listening position. A 5 dB difference at 20 Hz sounds half as loud.
That said, there is no "need" for HT response flat to 20 Hz, though many desire it.
Hi viki_v2,
For HT you might look into this thread:
http://www.diyaudio.com/forums/subwoofers/143714-lab12-tapped-horn.html
The nice thing is, that the LAB12 is a very versatile driver, so you should find some box that suits your listening taste.
Regards,
For HT you might look into this thread:
http://www.diyaudio.com/forums/subwoofers/143714-lab12-tapped-horn.html
The nice thing is, that the LAB12 is a very versatile driver, so you should find some box that suits your listening taste.
Regards,
I didn't cuz I got my TH-18's back (kid never paid me) so I'll be using the two TH-18's powered by a qsc 4050 and I grabbed a qsc 1450 to power the two PAL12's. Should be a decent amount of bass from that combo but I have yet to set it up and test / tune it.
I thought about building one of these using the 12" W750 from 18 Sounds. Wont go as loud and has less excursion capabilities. But would do nicely for a small setup with a single top. This will main be for background music and not concert levels. I like the thought of having a small amp to power both a single sub and top would be nice. Then having the whole thing on a small generator.
Will also be building a TH18 down the road.
Will also be building a TH18 down the road.
First Use Pal12 LAB12C Loaded
Used my two new PAL12 subs, loaded with LAB12C drivers, today at a Relay for Life event in Henry County, KY. We set up at a park, inside a 0.9 mile walking track. We set up about in the center, up on a hill. For tops, I used my home brew column arrays that have eight four inch drivers and a compression driver/horn on top. Used two PAL12's and four of the columns arrays. It sounded great. The subs are just effortless sounding and go very low. The system easily filled the park with great sound and walkers on the track all the way around could easily hear the music and announcements. Set up and tear down was super fast since all the cabinets were together in one place.
Thanks for the great sub design!
McJ
Used my two new PAL12 subs, loaded with LAB12C drivers, today at a Relay for Life event in Henry County, KY. We set up at a park, inside a 0.9 mile walking track. We set up about in the center, up on a hill. For tops, I used my home brew column arrays that have eight four inch drivers and a compression driver/horn on top. Used two PAL12's and four of the columns arrays. It sounded great. The subs are just effortless sounding and go very low. The system easily filled the park with great sound and walkers on the track all the way around could easily hear the music and announcements. Set up and tear down was super fast since all the cabinets were together in one place.
Thanks for the great sub design!
McJ
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Hi m R g S r, im learning about tapped horns and dont know very much but it seems that the infinity referemce 1240w/1260w drivers have a pretty similiar response to the lab 12 but they are slightly peakier (this is my first time using hornresp, all i did was put the driver parameters of the infinity reference 1240w and everthimg else that u put)
Some promising updated Hornresp sims:
1 watt:
SPL for one speaker, 1 watt:
Impedance:
Hi R g S r, I wanted to know if using the Infinity Reference 1240w driver would work (the old version of the Infinity Reference 1260w), according to Hornresp it has almost the same exact response and can take about the same power until xmax...
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Freddi turned me onto the Infinity 1260W - it appears to be an overlooked driver and the performance to price almost seems too good to be true. I suspect it will be peakier but that is an insane xmax of 13 mm for a 93dB $62 driver.
Specs and T/S params:
http://at.infinitysystems.com/tl_files/catalog//Infinity/Infinity-Car/Specsheets/Reference/Reference/1260w/REF1260W_PI_EN.pdf
$62 including shipping:
Amazon.com : Infinity Reference 1260w 12-Inch 1200-watt High-Performance Subwoofer (Single Voice Coil) : Vehicle Subwoofers : Car Electronics
I plugged the T/S params into Tundra LTD's Akabak script for the TH-18, changed the high pass filter to 31.5 Hz and set the low pass at 80 Hz and here is what you get at 50 volts which hits xmax of 13mm. It appears to be a nice drop in replacement with some good kick if you can spare an amp that can driver 50 volts into 4 ohms (625 watts before compression) for 120+ dB at 1 m.
Freq response:
Cone excursion at max SPL:
Impedance:
Specs and T/S params:
http://at.infinitysystems.com/tl_files/catalog//Infinity/Infinity-Car/Specsheets/Reference/Reference/1260w/REF1260W_PI_EN.pdf
$62 including shipping:
Amazon.com : Infinity Reference 1260w 12-Inch 1200-watt High-Performance Subwoofer (Single Voice Coil) : Vehicle Subwoofers : Car Electronics
I plugged the T/S params into Tundra LTD's Akabak script for the TH-18, changed the high pass filter to 31.5 Hz and set the low pass at 80 Hz and here is what you get at 50 volts which hits xmax of 13mm. It appears to be a nice drop in replacement with some good kick if you can spare an amp that can driver 50 volts into 4 ohms (625 watts before compression) for 120+ dB at 1 m.
Freq response:
Cone excursion at max SPL:
Impedance:
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I can see what you have done - the unprocessed response is very peaky If you input the Infinity driver parameters into m R g S r,s sim in post 6 you get a very similar peaky response.
The hi-pass and low pass filters are then smoothing out the peaks.
Don't know why you are using the TH18 sim as an example though!
The hi-pass and low pass filters are then smoothing out the peaks.
Don't know why you are using the TH18 sim as an example though!
Lol, I guess this is 12 inch TH thread. I just happened to have the TH18 script handy. Is there a script for the horn of this thread available?
So hornresp should be correct? Because im not sure how cone stiffness affects THs but it seems this is a very good replacement driver that is 100 dollars cheaper
The AkAbak sim should be good with the Infinity 1260W. It will not likely hold up to continuous high power like a true pro sound driver though. For home use or occasional parties it should be fine. Then again, if you burn one up its just $62.
Yea, i have two 1240w drivers so im planning to try two of these box designs. I have heard of people using these subs in sealed boxes with 500w+ successfully so i hope they can handle 300w-500w continously at a party, if they die i guess i will use the LAB 12C 🙄
Note that the 1240W has a much higher Qts and will not work as well as the 1260W in a tapped horn. Good to hear that it can at least handle sustained 500 watts given that the manufacturer claims kilowatt capability.
The Hornresp graph i posted was the 1240w, it is almost exactly the same as the LAB 12 driver
The kW rating is a peak one. The RMS is much lower.
My older Infinity 122.7W drivers were rated 350W RMS, 1.4kW peak.