Recent content by Rolledmyown

Hi folks, I had a look through my experiments that I carried out earlier in this year that led to the files that I posted back in April, the ones that Keith_W indicated were way out of alignment. They certainly are and I think it's because I wasn't working correctly with the software that...

Thanks Keith, I downloaded your e-book earlier in the and found it very useful. I'd sort of convinced myself that my drivers must be aligned, because the results looked pretty good a few months back. But looking through my records I saw that I'd put a new sofa in my listening room, then adjusted...

Hi folks, it's been a few months since my last post and I've completed my replacement of passive crossovers in each of my stereo speakers with Hypex FA123 plate amps. That included a bit of box woodwork to assemble everything and learning how to implement filters, delays and group delays in the...

Thank you all very much for your assistance (including contributions to a long thread in ASR by you, Keith_W). I really made good progress over the last couple of days. Whilst not ruler-flat, my delay- and phase-corrected sweeps (including the sub in measurements) look better than they ever have...

I thought I did, but I'll check! Good point too.

Ah, OK, 100 - 22k should be fine. I have a big cap hardwired to protect the cap, but it is arranged to roll off at about 30 - 40 Hz, so hopefully commencing the sweep at 100 will suffice, I could always short the cap if you think it still will have an impact. I have to say that these answers to...

OK, I've tried a couple of experiments and attached some of the results. First, I placed my mike at the listening position then used L+R sweeps and slight adjustments in the mike position slightly until I no longer saw two impulses. So I think I've got my speakers equidistant from the mike. So...

Thanks for that Keith! The parallax error did occur to me, and that is why I started to go down in delay as I expected that the path differences between the mid and woofer would be shorter than assumed. And my speakers are quite tall 3-ways. But it seems like the other assumption that I was...

Sorry, I should also have asked - should I deactivate the digital crossovers on each driver? For the sub I think the only thing I can do is to run at the max XO value as I don't think I can disable the LP. PK

Thanks SM52, I did my close field measurements following the miniDSP recommendations using one speaker as the reference and in the test speaker just the tweeter and mid then just the mid and woofer, so two measurements for 3 drivers. You are saying to measure each individual driver - which...

Hi folks, I'm a bit out of my depth here with some recent REW experiments - and audio in general! Long story short, I've have a pair of kit speakers comprising Peerless 830668 woofers, Scanspeak 12MU/8731T00 mids and Classic D2905/930000 tweeters in a ported 70 L box. I made my own massive...

Hi folks, I have a slightly different variation of the phasing/delay question, which I am also struggling with at the moment. I'm currently changing my 3-way kit speakers from passive to active and integrating my SVS PB1000 sub with the speakers. I have been doing this in stages. First I did my...

Hi folks, Like most things in my (retired) life now, I think there is the possibility of one last attempt to breath some new life into old stuff, so long as not much cash is involved. My current DIY hifi includes a Foreplay valve amp, an AEM6000 power amp and some kit speakers. Having got rid of...

Thanks for your involvement folks, I'll keep pursuing this and fill you in if I get anywhere!

Thanks for the thoughts Sam! I did have a small burr around the perimeter of the tweeter, which I removed. No change in the response. There is also a small gap between the tweeter and the baffle, which I'll try and fix. My near field measurements were at about 1" from the tweeter on its baffle...