As of this afternoon, all 4 Series firmware versions have been bumped up to 2.20, giving them all newer units FIR filtering capabilities, as well as enhanced remote control capabilities (more on that in the following post). I have written at some length about how we have implemented FIR filtering (careful here – it’s FIR filtering NOT FIR filters! 🙂 ).
Have a read through these associated posts to find out how it works and what it can do for you and your system –
Part 1 (Background) https://audiocore.wpengine.com/techblog/?p=484
Part 2 (Implementation) https://audiocore.wpengine.com/techblog/?p=487
Remember these posts were written late last year before we had fully checked out the possibility of implementing this in all 4 Series units so they refer to the DP448 only, so the serial number references about DSP platform are specific to 448s only.
Also remember that this upgrade will only work in 4 Series which have the newer DSP platform (to date, units less than two years old, roughly speaking). You can check what platform your unit has in a couple of ways:
If the unit is running the latest firmware (currently V2.20) then the display will show
+= AudioCore DP448 =+
=== Software V2.20 ===
if the compatible DSP platform is fitted or
== AudioCore DP448 ==
== Software V2.20 ===
if the incompatible older DSP platform is fitted. The “+” at each end of the top line instead of an “=” is the signifier of the newer DSP.
You can also check in the System Status through the System Sub-Menu – one of the scrolling messages will either show
System Status
= DSP TYPE=2 Number=1 =
if the compatible DSP platform is fitted or
System Status
= DSP TYPE=1 Number=2 =
if the incompatible older DSP platform is fitted.
You can still load this firmware into older units, and gain the advantage of the extra simple remote control commands, but the FIR filtering support won’t exist. As ever, we always recommend you update your units’ firmware inline with a new release of AudioCore to ensure they play together happily 🙂