@Atak_Kat
I can help but I want to show an example here if that's okay?
You dont show how you positioned and installed them but let me guess you went with the Simvibe ideology of 1 in each corner. I know Simlabs also sell mounting brackets, did you buy those as well, can you show images please of your rig and how its all installed?
You are coming into tactile when in the last 1-2 years with new software and it improving "Tactile" has changed alot in what we can do regards installations, the number of channels and also how we distribute effects.
I am sorry if you already went out and spent $90 on Simvibe (maybe you havent) as now it is no longer the best option to take for tactile immersion. Obviously Simhub/Shakeit comes up a lot in this thread and it is by a clear margin the first solution people should now be considering for controlling their tactile. It is also FREE but I recommend giving its developer a nice donation as the work he has done is rather amazing and importantly he has listened to the community to improve the software with features they sought after.
Costly Entry
Now from a perspective of lets compare, that's a minimum of over £400 of tactile Shakers and two good DSP amps with cables is easily another £400. It is quite a bit of money to put out for something you are kinda not feeling has matched your expectations.
Improvements?
If you let the energy travel to other places then you will only get a portion of its energy going into your own body. You also did not mention using isolation so I can only assume you are doing nothing to try and contain the energy on platform sections for the seat/pedals?
I know Simlabs sell brackets just as SimXperience do also for attaching tactile mostly for the 4 wheel installation approach but hold up, wait. I can assure you that this is NOT the best approach to take if you want to get the best performance. We don't want to attach them to the main-frame we want the energy to be more directly placed into the seat and the pedal regions.
Why?
The priority is that the best energy from the units goes into the user not spread across a 5ft rig going wherever it can. So we want a more direct response from the units at close range, also to contain and direct the bass energy both in the seat and the pedals. As you have 4 units for front/back stereo then you should also still want to be able to enjoy stereo effects but some users are quite content with mono it seems.
The Benefits Of DSP
As for increasing the output, you did do something indeed that was good. You paid attention to someone recommending to buy the DSP versions of the amps.
This will greatly let you get the most out of the units but the above points mentioned also needs to be considered with improvements in making more of the energy for the units you are using.
The NXD software will not load if using the older iNuke amps. So copy these settings from my (Remote Connect) software the older amps used. These are only examples from BK Concert units and not final configurations but will help you learn how to improve how the units are operating.
Behringer iNuke DSP & Behringer NXD Amplifiers
Greatly Enhanced Low Bass
I can't say how well this will work on Mini LFE models it may be far too much but start with 3dB gain and take it up to the 12dB. You can also try different filters but it is easy to visually see what it is doing.
What I can say is for owners of the largest BK this will
GREATLY transform how well the low frequencies feel, giving them much more energy than a standard or typical amp can achieve. It frustrates me to see people buy non-DSP models and ignore the advice given to help but hey it's their money and their choice if they think it is not necessary or worth having.
Determining The Slope
Some amps come with a switchable crossover feature but it will have a fixed "Slope" in how it is applied. Subwoofer amps tend to let the user alter the crossover frequency but again they generally do not let the user alter the drop off it uses. Often these implementations are limited to what we are doing here with audio in how we are using constant low bass frequencies more and differently to how general audio or music applications are using low frequencies.
See the vast difference in control the "Slope" makes which varies depending on the other values as well. We can visually see the differences in this example with channels (A) and (B) with same settings but only the slope altered.
Notice the difference altering the "Slope" has for example with 60Hz
It is 0dB on (A) but is +5dB on (B), keep in mind that every 3dB is approx 2x the energy.
We can also see how the higher frequencies are kept higher and extend further. That will bring more detail with harmonics and feel very different.
Cliff Slope
Notice if we use a higher slope value how it vastly affects what Hz will be output by the amp and the dB at which they will be at. A user with just a BK unit will want a good spread of frequencies.
However a user with installation along with the method I recommend in combining also "exciters" with the BK units. They will want to focus on the best low bass to output on their BK units and use the "exciters" primarily for the mid-high frequency detailing as they do this better.
Doing this means using a tighter or more limited frequency range and avoiding the boomier (mid-bass) frequencies. When we apply this approach, we can push dB gain and use increased wattage for enjoying more thrilling and extended low bass. That in turn, gives you stronger impact/realism with hi-intensity effect scenarios we apply to use the lowest frequencies.
Low Bass Can Alter Your Face
We still have people on the forums who do not believe me, on how productively we can use this with various effects including G-Forces or for High Energy Braking scenarios to dramatically increase the sensation and realism this can bring to the immersion.
Yes it will need the very biggest units and specialist tuning you see here but we can bring with "tactile" methods to replicate high energy and achieve a sensation not possible with motion rigs or just the common tactile. Also as it is audio we can alter and continue to create new effect sensations and this is something I have found addictive and seen potential to even be able to apply to different types of car their own unique felt character and sensations.
In the pursuit to take things further, to then not just go with the typical approach/method of finding effects that feel quite nice and then use them on all cars or some with only minor tweeks.
Well, that's okay but nah, as the potential is now much greater that we have what Simhub/Shakeit and continued learning/research into all this brings. As I come from a different perspective being a hobbyist in tactile, I find it very interesting and enjoyable with continuing to learn all the time at improving the effects.
It all comes down to how far you get into it or eventually you want to go?
Have a play about and put in some trial and error with this but in general, you learn what suits not just your installation but also preference. You can try some audio test tones to help feel what these are doing.
Piston Pang & Increased Detail
Here we use PEQ to specifically adjust individual frequencies. The Mini BK models tend to have spikes at certain frequencies. The 35Hz is a general area that is a problem. With the DSP your amp has you can now adapt how your amp outputs this and neighboring frequencies to help reduce/avoid the issue of piston pang.
More cut needed? Then increase the minus value for the 35Hz dip if you stil get much piston pang. The "
Quality" will let you also widen/narrow this to determine what Hz (before/after) 35Hz "center value" used is incorporated.
Notice how we boost the 80Hz with +3dB but using a Q of 3 (allows in more frequencies) compared to how we cut the 35Hz with a much tighter Q value of 10. You can use the dials or drag the numbers at the top.
This should be a good help to you or others, yet this is the type of post that takes time and will get few likes or be much appreciated. Anyways regardless what you seek to do on your journey let us know how you get on and show us more of your rig if you want further help.
@F1Aussie and other NXD owners....
I can also point you to this thread that should be a LOT of help with the NXD amp and its software.
Not sure if settings saved on the old software will load into the new software. I recommend you backup settings to a PC as it is easy to save over or wipe saved profiles on the amps own internal memory.