Hello community!
I built two PM90s last year and I am very happy with them. Props to Peter!
To my ear they sound almost like Lamda 15" Tops, which is amazing.
I built FIR-Coeffiecients using RePhase, Systune and some Excel-Workarounds, which was a lot of work but turned out fine.
However I've been using my rig for some live sets and gigs and I want to push down the latency a bit without losing the "crispness" of the FIR-filtering.
I've hit some limitations and didn't find anything usable online, so I am posting my open ends and questions here in the hope for some guidance.
How much total delay are your FIR's generating with the ASC48F? Do you have an tips to get it down? How low in Hz do you go with the FIR-filtering on the COAX?
For which crossovers do you use the LIN-Filters and how much delay do they add for you? Which filters do you use for the other crossovers? And how many phase-jumps do you still have in your rig?
I'm down to just one phase shift in the 100hz region, upwards from that its pretty flat. With the LIN-Filters just used from the crossovers from 600hz and up I'm still at 23,6ms delay... Which is too long for live-music in some setups, especially with strong reflections intefering with the monitoring as in warehouses....
Also do you use the same Preset for live and DJs or do you switch?
Thanks for taking the time to read this
All the best from Leipzig in Germany
Felix
I built two PM90s last year and I am very happy with them. Props to Peter!
To my ear they sound almost like Lamda 15" Tops, which is amazing.
I built FIR-Coeffiecients using RePhase, Systune and some Excel-Workarounds, which was a lot of work but turned out fine.
However I've been using my rig for some live sets and gigs and I want to push down the latency a bit without losing the "crispness" of the FIR-filtering.
I've hit some limitations and didn't find anything usable online, so I am posting my open ends and questions here in the hope for some guidance.
How much total delay are your FIR's generating with the ASC48F? Do you have an tips to get it down? How low in Hz do you go with the FIR-filtering on the COAX?
For which crossovers do you use the LIN-Filters and how much delay do they add for you? Which filters do you use for the other crossovers? And how many phase-jumps do you still have in your rig?
I'm down to just one phase shift in the 100hz region, upwards from that its pretty flat. With the LIN-Filters just used from the crossovers from 600hz and up I'm still at 23,6ms delay... Which is too long for live-music in some setups, especially with strong reflections intefering with the monitoring as in warehouses....
Also do you use the same Preset for live and DJs or do you switch?
Thanks for taking the time to read this
All the best from Leipzig in Germany
Felix