I've just started using some of your gear having bought a system including two HB10SB bins with 18" B&C drivers (built Jan 07 I think). Problem is I don't know any of the specs. Is there anything you could let me have about the frequency response curve or the power of amp that you would suggest that I use to drive them best?
Also, I use the rig for local bands in small halls and marquees and am looking to upgrade the top boxes (currently reflex 15" 500w RCF driver and a 1" 100w selenium compression driver). I want to keep to two boxes per side and wonder what you would suggest would go well with the bass bins? I was thinking of your MX600?
Appreciate any thoughts from you or others. I'm based near Colchester so good to know the bins haven't travelled far since you created them.
Hi Rigsby, I'm not sure what that box would be as I never had a model number with that configuration. Give me some more info, A photo would do it.
Regarding MX600's, they are a serious cab, which can stand a lot of bass cabs underneath. In the end it is all down to balance and even response throughout the range, achieved mainly by sensible engineering.
The previous owner must have given me the wrong model number. Now that I have established what I actually own I would like to optimise their performance. As my boxes have 2 x 1000w RMS drivers, what size amp would you use - 3kw per side into 4R or should I go smaller?
A couple of other questions, where would you put the crossover point? At the moment the BSS 388 Omnidrive crosses over the the 15" RCF driver in the mid / top reflex cab at 100hz, but this seem low. Could the boxes take a higher crossover point and still sound clean / give a fairly even pre-eq frequency response? Any frequency curves that you might have or further information would be very welcome.
Finally, as previoulsy mentioned, I am thinking about buying some new mid / tops to go with these cabs. What ASS boxes would go best with the SP10s when I am using them for live bands in halls up to about 75 - 90' long and about 200 people.
Sorry to ask so many questions, but it's great to have the opportunity to consult the man who built the cabs in the first place in order to do them justice.
Hi Rigs, It would appear that you have the 18TBX100's installed, which is good. The 3k amp is about right. You will be delivering less per side into 8 ohms, but you will have ample headroom, which is important for good bass.
It would appear that you are running three way. I would leave the x/o point at around 80 to 100hz. as you have an Omnidrive, you should consider overlapping the sub with the bass speaker in your top cab, and letting your top speaker go down to around 60hz. Ultimately, these bits should be time aligned, however, as they are both reflex cabs, they won't be that far out. Moving your top cab on top of the 2x18 to align the magnets would ensure good coherence.
Any Spektra top cab apart from SP1's work on the bass cabs. However, you should look for SP4's which will give you a 1x15 plus hf horn. For that size room, 2 per side would be better than one. If you were on the long wall facing across the room you would need these for dispersion if nothing else.
Any more questions, just ask. T.