Playing live with a nylon string acoustic, there's always a tradeoff between tone and feedback. We've been using Fishman Aura pedals, and for the most part, they're great. It's just the real top end that sound digital due to the FFT thing thats going on.
On the other hand, the built in mic on the Fishman prefix preamps sounds great, but it's way to susceptible to feedback in a situation where loud stage monitors are being used.
But it occurred to me that the feedback frequency is always around 200hz, and never really exceeds 500hz.
So what would be awesome would be a crossover to use >500hz from the mic, and <500hz from the pickp/aura.
I can't see any premade crossover units for this sort of application, and all schematics I can see on the web are for speaker stuff, or line level.
Anyone point me in the right direction?
I'm thinking 2 pole filters would be best, but it needs to be suitable.
On the other hand, the built in mic on the Fishman prefix preamps sounds great, but it's way to susceptible to feedback in a situation where loud stage monitors are being used.
But it occurred to me that the feedback frequency is always around 200hz, and never really exceeds 500hz.
So what would be awesome would be a crossover to use >500hz from the mic, and <500hz from the pickp/aura.
I can't see any premade crossover units for this sort of application, and all schematics I can see on the web are for speaker stuff, or line level.
Anyone point me in the right direction?
I'm thinking 2 pole filters would be best, but it needs to be suitable.
Why do that when you can just EQ the monitor?
If you need to do it in the guitar end, they make feedback destroyers - multiple brands.
You need a notch filter, not a crossover. Feedback Ferrets (Peavey's brand name) are essentially adjustable notch filters that adjust themselves.
If you need to do it in the guitar end, they make feedback destroyers - multiple brands.
You need a notch filter, not a crossover. Feedback Ferrets (Peavey's brand name) are essentially adjustable notch filters that adjust themselves.
Yes of course and we usually do just find the frequency and notch it, but thats with just the pickup. With the mic open it's an impossible task as it feeds back on multiple frequencies and any change in distance from the monitors changes everything.
We've experimented with doing this at the desk with 2 lines coming from the guitar and using HP/LP filters to simulate a crossover and it works great but takes too long to setup. Really need an onboard solution that the guitarist can just plug in.
Active feedback filters chase the changing conditions. They do work.
perhaps reconsider the monitor situation in general. What is the guitar competing with on stage that requires the monitor to be so loud? Have you considered in-ear monitors? is it only your monitor? or are there other nearby monitors contributing? They could be repositioned. In fact yours might as well. HAve you tried having the monitor behind you or to the side so it has less chance to resonate the top of the guitar.
But while I dislike your solution, active crossovers would do it the way you like. What is wrong with line level crossovers? if you are thinking of putting it between the guitar and amp. Wait, is the monitor the only sound source you have or do you have a stage amp too? In any case, no reason this can't be placed after the preamp is there? If you are sending separate feeds to the mixer, you can run a crossover in the channel inserts.
perhaps reconsider the monitor situation in general. What is the guitar competing with on stage that requires the monitor to be so loud? Have you considered in-ear monitors? is it only your monitor? or are there other nearby monitors contributing? They could be repositioned. In fact yours might as well. HAve you tried having the monitor behind you or to the side so it has less chance to resonate the top of the guitar.
But while I dislike your solution, active crossovers would do it the way you like. What is wrong with line level crossovers? if you are thinking of putting it between the guitar and amp. Wait, is the monitor the only sound source you have or do you have a stage amp too? In any case, no reason this can't be placed after the preamp is there? If you are sending separate feeds to the mixer, you can run a crossover in the channel inserts.
Well it's a Nylons stringed guitar that features in a, let's just say a LOUD electronic setup. No amps, straight into a DI to FOH and monitors. In ears would be good but they guitarist is not into it. The band enjoys loud stage sound for the electronics for the right vibe. We tour with some very experienced engineers and we get by with the Fishmans, but there is a sacrifice in tone. The best sounding solutions are all very microphonic which always ends in disastrous feedback issues no matter what the monitor placement. This is a novel solution that I arrived at be exhausting all others, but from testing it should work remarkable well. I'm surprised no manufacturers have implemented such a system. The acoustic under saddle pickup is passive and wired directly to the jack, and then to the fishman aura peddle. A great sound for piezo really, just lacking a convincing top end which could be provided by swapping in just the upper frequencies from the mic and avoiding the lower end feedback that comes with the mic.
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