Originally Posted by HighModulus
So I currently have 3 x Hsu ULS-15 Mk2 in my theater. 25x15ft with 10ft ceiling. All EQ'd from a miniDSP 2x4HD
Peak SPL in 120-130db no complaints until we get below 20Hz to 25Hz. Still have respectable output down there but looking to reinforce the output without having to get monster ported subs...Like JTR Orbit Shifter x 2 or something. Have the budget, just not the will to bring in monster ported subs...plus I've always been preferential to sealed subs.
So 6 x theater seats. I am considering bass transducers for the seats. When I built the theater, and specifically the riser, I prewired speaker wire and banana plug plates for transducers for each rows (2 rows of 3 seats)
Question 1: As I have little experience with transducers (ok near none) are they going to do much as I have plenty of output from the ULS-15's? You can never have enough bass...but its worth asking.
Question 2: I have one output left on the MiniDSP...so getting a new amp to run these and use it in Bridged/mono seems to be a solid choice. Does the amp quality matter for transducers? Like a Crowne or Dayton Audio vs. Emotiva PA-1 (stable mono at 2.7 Ohm)?
Question 3: How do I wire them? 6 transducers at 4 Ohm is going to be odd...pairs in series (x3) and then Parallel? 2.67 Ohm is tough for many cheap amps.
Question 4: besides the ButtKicker Mini LFE is there another inexpensive option for sub 20hz to look at? Aura shakers appear to roll off.
Any help or suggestions with these questions is appreciated.
I started with buttkicker LFE's. They're ok but slow and noisy. I have aura shakers in other rooms, they're toys but ok. I have owned earthquake QB10s (still have 2 of these unused in closet). They were far better than buttkickers. Same effectiveness but much faster, cleaner, much more useful with music, never bottomed out making horrible racket etc. Then I bought some earthquake MQB-1's on sale at amazon for $150 each (https://www.amazon.com/dp/B006H3SV1E/
). I absolutely love these. They're the best shakers I've had. They blend in so nicely it just feels like the subwoofer is in your seat. They're very fast and can be used with music very well. They are silent so even at low volumes you don't hear any noise from them. (Buttkickers were very noisy, qb10's a little noisy).
I've also had crowsons here, but I actually found the MQB-1's better if they're installed correctly. They need to be mounted to their brackets and bolted to your furniture. If you're planning on bolting to a platform, these wont' be the ones for you. For the price, I'd give these a try. They're so cheap you can throw them in the trash if you hate them and not be out much.
The cleanliness of the amp won't matter much. But the quality of amp will. The crown amps are terrible for driving these things. I had ok luck with an inuke dsp1000 using the DSP to up the low frequencies. My favorite amp driving these is still the buttkicker BKA1000N.
As for wiring, yes, 3 or 6 of these will present an odd load. I'd try to keep it even. 2, 4, 8.