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We have 2 subs available to use in my covers band but 9 times out of 10 we only use one.
Our subs have stereo inputs and outputs so its not an issue connection wise.
Our PA is powered and very efficient so one is usually enough for the size of venues we play.
It all comes down to the kind of PA you are using and how loud/efficient your PA is. If you feel the low end is lacking then adding another sub would be beneficial.
For typical band bass bins like Mackie SRM bins, HK Actor, QSC K series etc one each side with a pole for the tops is a good way to go
We have the mackie srm450 tops and a mackie swa1501 sub. The last, large venue gig we did we had just the tops and no sub. To quote the singer "At the Gate, people struggled to hear my vocals only a few rows back, I couldn't turn it up much more as the lights were already peaking slightly. The sound at the back was very quiet, so we are producing a very thin quality of sound and no richness". I think she believes that the subs will sort it.
Eqd Speaker Cranker clone
Monte Allums TR-2 Plus mod kit
Trading feedback: http://www.thefretboard.co.uk/discussion/60602/
Is it lower than this:
R.
Eqd Speaker Cranker clone
Monte Allums TR-2 Plus mod kit
Trading feedback: http://www.thefretboard.co.uk/discussion/60602/
E - 41.204 Hz
A - 55 Hz
D - 73.416 Hz
G - 97.999 Hz
The frequencies of the corresponding strings on a regular guitar are an octave higher, ie. twice the frequencies of the bass strings, ie. 82.41 Hz, 110.00 Hz, etc.
R.
Eqd Speaker Cranker clone
Monte Allums TR-2 Plus mod kit
Trading feedback: http://www.thefretboard.co.uk/discussion/60602/
Bass has frequencies much lower than 120hz. Guitar also does but there really isn't anything useful below 100-80hz which is why a high pass filter is useful, it clears up a lot of the low end rumble a mic'd guitar cab can create, thus making the mix cleaner.
If you're not putting bass or guitar through the PA then the sub will be largely redundant, although it may add some bottom end, depending on how steep the crossover slope is.
Eqd Speaker Cranker clone
Monte Allums TR-2 Plus mod kit
Trading feedback: http://www.thefretboard.co.uk/discussion/60602/
Sorry, I didn't read this properly.
The band going through the PA will make those other things louder which may mask the vocals. That's just a matter of getting the balance right.
At a large venue, you're always going to struggle with just a pair of tops. I wouldn't even put kick and bass through the PA with just a pair of tops.
Mackie srm450 are ubiquitous, but not magical - they will not fill a large room effectively.
R.
Eqd Speaker Cranker clone
Monte Allums TR-2 Plus mod kit
Trading feedback: http://www.thefretboard.co.uk/discussion/60602/
R.
Eqd Speaker Cranker clone
Monte Allums TR-2 Plus mod kit
Trading feedback: http://www.thefretboard.co.uk/discussion/60602/
Also make sure the contour button isn't push in
In Italian Job we did some pretty big places with 2 SRM450's and 2 X 18" bins .... the 18's are much more effective than the 15"s
Always make sure your tops are high enough so the tallest bloke can't block the horn. High frequencies are very direction and a lot of bands don't put enough height on their tops to get past people dancing at the front
most gigs, your rig should be fine though