Quote from: phatt on May 07, 2022, 06:37:30 PMYes open back delivers a more spatial sound hence fuller effect especially in small spaces but can present weird sonic issues in larger venues.
You may notice that a lot of big pro gigs tend to use closed back cabinets.
A player friend noticed this weird effect at an old wooden school gig where his open back rig was giving him a crossover of out of phase in the position he was limited to in the building. It can mess with your brain and the sonic result can be off putting.
That does not happen as much with a closed back cabinet.
Although it can still effect a closed back cab it is not as bad.
Venues with big Glass windows can have really bad reflections.
Quote from: joecool85 on May 05, 2022, 03:08:51 PMYes open back delivers a more spatial sound hence fuller effect especially in small spaces but can present weird sonic issues in larger venues.Quote from: phatt on May 04, 2022, 08:26:15 PMFor me personally I tend to like Sealed Cabinets for single speaker combos.
I was just talking about this with a co-worker. I believe combos should be open-back, the way God intended. Just kidding, though I am an open-back believer.
Quote from: Enzo on May 05, 2022, 09:14:38 PMYou have three LEDs - plus power indicator - A, B, and P? I'd wager channel A, channel B, and Peak.
I'd check the IC for function
Quote from: g1 on May 06, 2022, 12:19:43 PMIs there a jack for PEQ footswitch? I think you may be able to turn it off and on so you can use it like a lead boost etc.
Quote from: nooneknows on May 02, 2022, 04:37:39 AMBTW, any hint about the speaker too? Any experience with different cones?
I am partial to Jensen C12R and C12K (I had them in my old Peavey Classic 30 and they were both delicious compared to the original mounted, with a preference for the C12K) but I don't know how they sound compared to the one installed in the Eighty Five, which I suppose it could be an Eminence, rebranded.
Quote from: g1 on May 05, 2022, 03:00:11 PMQuote from: SemiConductive on May 04, 2022, 03:58:20 PMWhat's the function of IC111 i.e. what fault is it protecting against?It senses DC at the output and kicks out the relay to protect the speaker. It's also supposed to be able to prevent over-current but I'm not sure if that function is being used. (see datasheet attached)
Quote from: phatt on May 04, 2022, 08:26:15 PMFor me personally I tend to like Sealed Cabinets for single speaker combos.