When I took the nearfield levels at home station using a program on the iPhone. You asked what settings I was using, and I think you said to use C to get true LF reading or something. I did the car sub after that. From driver's seat and outside the back with boot open as well as 10m to the side with boot open and closed
I do not intend to use the ZXI as a car sub but a pair forming speaker stand tower each side of a lil DJ desk
It may sound weird, and I don't know how to put it into words, but I am very sensitive to bass level at the lower part of my voice box down into my thorax to tail bone. This doesn't change with duration. I can use this to feel what the string is doing and the frankenlogi responding. Car drive is intense in bucket seats with material like;
This is a full body experience and if volume is raised to comfortable loud levels, heard a very long way. Both the kick and bassline.....and that opening effects washes over you
I do not intend to use the ZXI as a car sub but a pair forming speaker stand tower each side of a lil DJ desk
It may sound weird, and I don't know how to put it into words, but I am very sensitive to bass level at the lower part of my voice box down into my thorax to tail bone. This doesn't change with duration. I can use this to feel what the string is doing and the frankenlogi responding. Car drive is intense in bucket seats with material like;
This is a full body experience and if volume is raised to comfortable loud levels, heard a very long way. Both the kick and bassline.....and that opening effects washes over you
Everybody so far has missed the level of power required for a car subwoofer(s) to surpass outdoor concert bass levels.
Big powerful SPL car subwoofers can handle many thousands of watts each, some of them are capable of 5000+ watts. There are amplifiers that will do 15,000 watts. Some of them will use multiple amps this size.
Vehicle cabins also will have a resonant frequency of between 30hz and 50hz depending on the size and length.
So, the cabin with its windows down are now essentially an enormous resonator. That's literally why cars get loud.
The truly loud car audio guys will tune their enclosures to the resonant frequency of their vehicle, and can meter above 160db inside the cabin.
160db at 30 to 40hz is moving a LOT of air.
The car audio guys that shake the building you're in when they drive by are the high power guys like this.
Your 12" JL w3 on 500 watts in your sedan is not anywhere near this level.
The current SPL world record level is 185db.
There's no magic, it's literally just a **** ton of power getting sent to monster subwoofers that are inside of a giant resonator.
Big powerful SPL car subwoofers can handle many thousands of watts each, some of them are capable of 5000+ watts. There are amplifiers that will do 15,000 watts. Some of them will use multiple amps this size.
Vehicle cabins also will have a resonant frequency of between 30hz and 50hz depending on the size and length.
So, the cabin with its windows down are now essentially an enormous resonator. That's literally why cars get loud.
The truly loud car audio guys will tune their enclosures to the resonant frequency of their vehicle, and can meter above 160db inside the cabin.
160db at 30 to 40hz is moving a LOT of air.
The car audio guys that shake the building you're in when they drive by are the high power guys like this.
Your 12" JL w3 on 500 watts in your sedan is not anywhere near this level.
The current SPL world record level is 185db.
There's no magic, it's literally just a **** ton of power getting sent to monster subwoofers that are inside of a giant resonator.
I wonder if the medium through which the energy of lower frequency is dissipated is involved. Our bar had an awesome sound system 11Kw+, (2 x18 + 4 x15 subs+ (6 x 12" bass). One of bar staff lived 2 blocks away. She couldn't hear the music from inside her apartment but always had a scary feeling - Godzilla was out there somewhere and he was coming for her.
My point being: it takes a lot energy to produce sub 20hz bass. A truck idling outside your house may not sound very loud but it can rattle windows and move furniture like a poltergeist.
My point being: it takes a lot energy to produce sub 20hz bass. A truck idling outside your house may not sound very loud but it can rattle windows and move furniture like a poltergeist.
As all in a car rattles around the car surface forms a radiating surface like a DML panel multiplicating the radiation surface of the driver itself!
when the floor is a huge passive radiator slapping your Frank and beans
https://www.tiktok.com/t/ZTNVGxBAH/
https://www.tiktok.com/t/ZTNVGxBAH/
Most project cars in my experience appear much better dampened than PA bins. Those huge flat PA panels should smash a hatchback
You a mistaking with someone else, please try follow a bit better. What I have though pulls only 127dB with the CD single of the African Dub Child track linked in the thread. Question is why that kick bassline can be heard a very long way on a 127dB System
We have worked out that the PA doesn't due being able set the bass beam length. Weirdly only for bass, the rest of the spectrum keeps going kilometres
A car with a powerful bass box and a few kw is effectively a huge 10 m3 8th order BP with a 12 m2 passive radiator-port tuned to 40 hz
I find "infinity" a somewhat hard to use engineering tool..... It tends to complicate things a bit....
Infinite resolution? Infinite Spl? Infinite Bl? Infinite mass? It kind of side rails everything into religion and philosophy and deep late night talks centered around a herb usually smoked.
@Circlomanen
This has beeen explained in quite some ways before, but the thread starter wants to point out that car subwoofer driver are "better" than PA driver for PA use, as he is using them in his personal PA construction(s). Just like some PC subwoofer he modified for PA use. You may have hit a point when you mention smoking herbs. Cronic use has consequences.
This has beeen explained in quite some ways before, but the thread starter wants to point out that car subwoofer driver are "better" than PA driver for PA use, as he is using them in his personal PA construction(s). Just like some PC subwoofer he modified for PA use. You may have hit a point when you mention smoking herbs. Cronic use has consequences.
Etx18 current oem driver suk... It's failing all over the place ..EV changed their supplier?
Or intentionally sourced a cheapest one,?
Who knows
But replacing the stock driver with an 18tbx100 solves the weak link.
One local DJ swapped his etx failed drivers with the 18tbx100 and he's a happy camper.
Besides me other Members recommended that to a guy in the thread below.
He loved it.😎
285 oem replacement ... manufacturers price 100 bux
Failing rate 90%
330 18tbx100 ... manufacturers price 150bux
Failing rate 5%
He better spend 45 bux more and forget about more blown drivers.
And besides it was a proven working option that was tested by many people.
Personally we AB them with a DJ friend 4 etx cabs
2 stock and 2 18tbx100 ...the BC sounds louder and more tight at around 5 meters distance , no REW or SPL meters...just quick And dirty AB outside "test"
We called his wife and sister in law and blind tested , he asked them ... What you like better....this...or that...and they picked every time the ETX pair with the BC drivers.
He will order another pair to have his 4 cabs all matched up in a couple or more months.
Just wanna share that EV is dropping the ball on QC now at least for the ETX subs
And they are using dirt cheapo drivers inside
Not matched to the amp in the etxline
https://www.diyaudio.com/community/...dio-18-inch-woofer-with-similar-specs.413668/
Or intentionally sourced a cheapest one,?
Who knows
But replacing the stock driver with an 18tbx100 solves the weak link.
One local DJ swapped his etx failed drivers with the 18tbx100 and he's a happy camper.
Besides me other Members recommended that to a guy in the thread below.
He loved it.😎
285 oem replacement ... manufacturers price 100 bux
Failing rate 90%
330 18tbx100 ... manufacturers price 150bux
Failing rate 5%
He better spend 45 bux more and forget about more blown drivers.
And besides it was a proven working option that was tested by many people.
Personally we AB them with a DJ friend 4 etx cabs
2 stock and 2 18tbx100 ...the BC sounds louder and more tight at around 5 meters distance , no REW or SPL meters...just quick And dirty AB outside "test"
We called his wife and sister in law and blind tested , he asked them ... What you like better....this...or that...and they picked every time the ETX pair with the BC drivers.
He will order another pair to have his 4 cabs all matched up in a couple or more months.
Just wanna share that EV is dropping the ball on QC now at least for the ETX subs
And they are using dirt cheapo drivers inside
Not matched to the amp in the etxline
https://www.diyaudio.com/community/...dio-18-inch-woofer-with-similar-specs.413668/
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it can be that for live events the pa loudspeakers are are cut off below 50hz.
If its not Pink Floyd open air. They have low bass PA guaranteed.
I know because I was 1989 at Pink Floyd Mannheim open air.
If its not Pink Floyd open air. They have low bass PA guaranteed.
I know because I was 1989 at Pink Floyd Mannheim open air.
Some observations . . . Pink Floyd, Sly and Robbie are . . . well, really old. Their tracks have no sub-bass. 41hz is about as low as you're going to get. This frequency come from an ELECTRIC bass guitar. The only other sub-bass frequencies come from the kick drum - not ELECTRIC.
During a concert the artist producing the most un-amplified dB is the drummer. Due to the slow nature of bass it makes sense that kick amplification is minimalised during a live performance.
During a concert the artist producing the most un-amplified dB is the drummer. Due to the slow nature of bass it makes sense that kick amplification is minimalised during a live performance.
https://surgesound.com.au/wp-content/uploads/2022/05/en-lf-drivers-18tbx100-8.pdf
It's much cheaper than the 12W7 and goes low. Looks to offer the size of output down low that I am after but can this work in a 80-100L 33Hz ported box? It just might be the high power driver that I am after
Let's explain some things to the ignorant, shall we
The original post on this topic was with a severe requirement for minimal storage space and a request for driver suggestions together with some options from investigation into this about 2yrs ago
Zero suggestions for any workable drivers and folks getting their knickers in twist that pro mobile drivers offer some promise on paper and urban experience
Are you ready for something constructive yet? How about just one suggestion for a driver to nail average 115dB from 30Hz and with a clean note sweet delivery. Box is limited to 80L external. Try to do so without dipping into the pro mobile world and pulling on the power arm of the law
Dayton is not in contention, please dont suggest
on the BC site ,Vas for the 18TBX100 is 212 liters
looks like the 18TBX100 don't like stuff smaller than 134 liters
at 100 liters theres a nasty spike
comparing 133 vs 180 Liters you can see that 180Liters is 3dB (2.8dB to be exact )
more efficient than the smaller enclosure
and 3dB is like doubling your power
1st pic shows nasty spike at 100Liters
moving to 133 almost get rid of it
2nd pic show the advantage of a matched Vas
almost 3dB more efficiency
anydriver can be stuck in any cabinet , thing is that the more matched you are with the TS parameters
to your target volume and Fs , the more efficient your outcome will be
is a juggling game between cabinet volume ,driver and target Fs
if you need moaaarrr SPL!! just add more cabinets and amps 😀