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The drummer upgraded the subs from the SRM1801 to the KW181.:D I had the model number wrong and misled you all, sorry. The SRM1801 has 500W output and a strong peak at 90Hz, as opposed to the SWA1801z I thought it was, that has 800W and a more natural straight-line bass-boosted response. The...

That is the part I am not getting. Why is electrically looping back through the sound card meaningful? Does that occur once, or once with every new timing measurement?

I am aware that the phase shift is inherent to the speakers also. I was just hoping it was not such a big issue as to negate the benefit of driving through both subs and mains simultaneously. Obviously that can only be determined though experimentation and careful measurement. Well here is...

Thanks for the tip. The power alley is probably not an issue for most of what they do given that most of the stages are only about 20' wide max, but there is the possibility of outdoor gigs. I will need to keep this in mind for later. Presumably cardioid sub only applies in larger venue. We...

The DL1608 has adjustable delay on the outputs, so I should be able to accomplish this, but it seems like too much work during setup. I need to do this offline unless the venue demands alternate subwoofer placement. We have one small bar that seems to want the subwoofers placed for modal...

I have not noticed any issues, but then again we have been using aux fed sub... That was my first suggestion to the drummer. This is just a hobby for us and he seems reluctant/too busy to give me time on the system, plus with gigs only once per month or so and half of them using the house PA...

I am still trying to decide how to approach this. If I run with the built-in crossover, everything is simple and phase-coherent (provided I set the polarity on the sub properly) but the crossover is at 120Hz and the drummer will think he is leaving some SPL on the table. Me, not so sure it...

Sorry about that. No email notifications. I guess I have to turn it on somewhere.

If the mixer were less capable we would not be having this discussion because the subs would be crossed at their built-in 120Hz. Master Fader and the DL series opened a can of worms when they put more capability into the system than most people need. I think that is the core of the issue here...

The drummer originally had something similar, except he did the lowpass on the sub in graphic also. We reverted to this for the last gig for lack of time to develop a better solution, then I proposed the 60Hz 6dB/octave crossover as a compromise solution and he seems OK with this.

I have a UMIK-1 and a notebook computer that I plan to install REW on. I have already tuned dual subwoofers in my home theater, so I know something about it. Never used SMAART. Doubtful if there is any funding for it in this group, but I have used REW. In the plan, just not there yet.

I originally suggested 80Hz to a resident pro sound engineer at one of the larger venues we played, and he indicated that was low, so I used 120Hz. The sound was good, but I mistakenly added 12dB/octave LPF on the aux (sub) output (so the combination of internal and external could have been...

Wow, lots of replies. I guess I found the right forum. I will take these in order since the progression in the concerns seems logical as it unfolded naturally. Possibly on another forum? I had some delay getting into this one. Something about the membership having issues with new...

I am mixing sound for a local band at their (infrequent) gigs. The band is using the Mackie DL1608 mixer running Master Fader (actually an earlier version where the only available user manual is in the iPad app, but you get the idea) with SA1530z full range mains and SWA1801z subwoofers. I...

Sorry for dredging this old thread up, but I could not let this error stand uncorrected. The 'rms' limiting you describe is actually peak limiting that will still result in a clipped signal (at the output of the preamp) under feedback conditions. What you have drawn is similar to a power soak...