31 band two channel graphic EQ

You are much better off download one of the many smartphone apps that can give you a visual spectrum. Ive never seen a graphic eq worth using with such indicators...

Behringer DEQ1024 worked okay. Is actually a digital eq with a graphical interface - so sounded a lot better than their budget analogue graphics. seem to go for about £60 on ebay.

Ok, so I have had a look on the 'net for a hardware solution and there appear to be three likely candidates : Art HQ231 graphic eq and feedback eliminator, DBX AFS2 feedback eliminator and Klark Teknik DF 1000 automatic feedback suppressor. Anyone had  experience with any of these, please ?

The ART HD231 and Peavey Q231fx work reasonable well for the intended purpose, any kind of AFS device that doesn't have a visual display won't be nearly as useful. The thing to realize with feedback suppression is that there are still limits to what can be done, once you get past 3-4 cuts you will be approaching the limits of potential GBF so it's not really helpful to have 15-20 filters active it just hacks away too much of the signal. The ultimate solution is a digital mixer with RTA display, with that even if it doesn't have an AFS system you can see and apply a notch filter at offending frequencies.

Conanski wrote: The ART HD231 and Peavey Q231fx work reasonable well for the intended purpose, any kind of AFS device that doesn't have a visual display won't be nearly as useful. The thing to realize with feedback suppression is that there are still limits to what can be done, once you get past 3-4 cuts you will be approaching the limits of potential GBF so it's not really helpful to have 15-20 filters active it just hacks away too much of the signal. The ultimate solution is a digital mixer with RTA display, with that even if it doesn't have an AFS system you can see and apply a notch filter at offending frequencies.

Ok, many thanks

Chris Grimshaw wrote: Safetyman wrote: Ok, so I have had a look on the 'net for a hardware solution and there appear to be three likely candidates : Art HQ231 graphic eq and feedback eliminator, DBX AFS2 feedback eliminator and Klark Teknik DF 1000 automatic feedback suppressor. Anyone had  experience with any of these, please ? My recommendation would be to stop looking for feedback suppressors, and figure out why you're having problems with feedback at all. Cheap mics and badly deployed speakers are common causes. A decent mic (Sennheiser e935, for example) will go a long way towards avoiding feedback. Chris

Quite right, but it is not always possible to control the vocalists, who decide to move the angle of the mic stand or go handheld far too close to the floor monitors, causing feedback. Seasoned singers, do realise that they are in 'the feedback zone' and move back until the howling stops. However amateur punk bands etc always blame the sound man for their own failings, amongst others. I do/did before COVID 19 a monthly jam session for up-and-coming artists/bands etc with several changes of performers every hour and it is impossible to 'police' all the changes. Artistes do tend to treat the soundman as the enemy of their performance, rather than working with the soundman to improve their performances. I use Heil PR20/22's, SE V7 and Sontronics Solo mics which are great mics. :D