Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems Apodising Firmware Update (Unofficial)

Let me quote the Wiki page (you guys really should read it)!

Nick (in particular),
Have you loaded it onto your 568? Does it work? How does it sound?
My 568 has been attached to my laptop for a month while I sort out programming it all from scratch, including loading the firmware at some point. I will install it and use it properly one day when I get time.

Duncan

Yep!

My new mfu file is created now. Time to go flash my 568.2.

Ron

Duncan, firmware loaded, no ill effects. Not had the chance for any serious listening yet, just a couple of tracks, initial impression would suggest a little more ambience to the sound.

Nick

Works great on my 568.2 as well! I have not had a chance to listen much to it but so far it sounds great. It always sounds great but based on what I heard during a visit at George Mills place when he had his HD621 it should be a bit more relaxed and natural sounding.

Nice job Erwin! Thanks a bunch! You should get something for this. I wonder what Meridian will think.

Cheers,
Ron

I guess "what took them so long?" ...

I know its really pathetic! Especially the Trifield issue. It's been like 8 years broken.

Again well done! It was excited feelings like this when new features were added that made us love Meridian.

Each time I think I have a handle on some of this stuff, it skitters away from me again. Am I going to hear anything different with 18 bit DSP5Ks and a 568.2? Or would I only hear an improvement if I had 24-bit DSPs?

Duncan

Based on my experience with setting HS=N I would say definitely yes. But then again, I hear a big difference between the 'old' upsampling filter and the apodizing one, where most people here declare to hear a small or subtle difference.

I think it's unlikely Duncan. The 1x sample rate DACs in your 5ks use linear phase low-pass filters and there will be ringing generated in the DACs; there's nothing you can do about this, but it doesn't make you speakers bad overnight!

2x sample rate DSP or analogue speakers are needed to take advantage of apodizing.

OK clearly I didn't listen well enough earlier. I hear a much bigger difference now. I didn't hear the differences at Georges house with the HD621 like I do with my 568 and Erwins mfu file. Although we were listening to very good recordings at Georges. I just listened to Rush 2112 and ACDC Back in Black. Much more laid back very clean top end now. Sense of space between instruments and ambient more resolved. WOW!

Even low volumes sounds very clean with better sense of being there. Palpability went way up!

Nice!

Ron

PS. Sounds like a new preamp!

Does this mean that I can do the Apodising Firmware Update for my current 8Ks, 7Ks and 5500HC?