by BMac » Wed Jun 18, 2008 8:08 pm
One thing I want to add about sound reinforcement for drums, is that raw power is not the only criterion. A small speaker system may seem to have ample power when tested alone, but then fail to reinforce a conga in a live sound environment. Maybe those little speakers aren't playing back the whole spectrum of conga sounds, but are playing back frequencies that get trampled and lost among the sounds of other instruments.
I bought a JBL PRX-535, a three-way self-powered monitor, to tackle that problem. I don't typically need its full power for my uses. But I do need its accurate sound field in order to keep all the frequencies from getting muddled.
Look at your drum diameter. A tumba has around a 12 inch diameter. According to my theory, you'll need a speaker at least as big as a twelve-incher to begin to try to create an accurate sound field to reinforce that tumba. A two-way speaker on a pole, say having a tweeter and an 8-10 inch "woofer/midtone" speaker isn't going to give you a sound field with the right shape. Everyone will agree noise is being made, and you can hear that noise over other instruments perhaps ... but is that noise music?
Mackie, JBL, and lower-cost three-way monitors are available with woofers as big as 15 inches. A three-way monitor typically includes a tweeter, a 6-7 inch midtone speaker, and a big-daddy 15 inch woofer ... and cross-over circuits to get the appropriate frequencies out of each speaker in the unit. I preferred the JBL when I shopped around. Even though I never need its full power, it sounds like a conga when used to reinforce a conga.
OK, so such an animal can cost you a grand or more ... but I recently saw the Mackie equivalents to my JBL for sale (new, last years stock) for under $700 a piece. Such a monitor doesn't solve your board challenge ... typical monitors have one input.
But somebody above recommended the Yamaha Stagepas 500 ... I just looked that up ... wow ... look at all the inputs! That's bad ass. But ... it has 10 inch speakers ... I'm a little skeptical on that issue.
Now I think the OP said he plays bass. Of course the actual sound field of an electric bass rig starts at the speaker ... not at the pickup on the guitar where electrical signals are generated. So its hard to talk about accurate sound reinforcement for an electric bass guitar, because the guitar itself makes little noise. The circuitry of a powered monitor is nothing like the circuitry for a bass amplifier. Bass amplifiers unabashedly process the signal ... each in its own wonderfully characteristic way without regard to "accurate" sound reproduction. So plugging your bass into my JBL might not please you at all. Typical sound reinforcement amplifiers and speakers aren't intended to be the first electronic processing unit for an electric guitar. That's why you sometimes see a guitarist use his favorite portable amp/rig on a big stage, with a microphone pointed at his amp/rig. His rig generates his favorite sound, and the big house PA connected to the microphone accurately reproduces that sound.
Reinforcing your congas and reinforcing your bass guitar on the same speaker system may be like trying to mix oil and water. Your congas aren't likely to sound good through your favorite bass rig, and your bass will sound weird if you plug it directly into an accurate sound reinforcement system. That said, I like the sound of a conga through a bass rig (more bass, punch, and presence) much better than through a lead guitar rig (too tinny and sharp). I've heard a keyboard amp/rig recommended as a good general choice (wide frequency response), but haven't tried it.
Ok, right, too much information for the question asked ... but I like to write ... can you tell?
Cheers
BMac
Last edited by
BMac on Thu Jun 19, 2008 7:50 pm, edited 2 times in total.