When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
OK, it was a crazy idea and I won't do it that way. However, I'm not sure how I set up REW for a grouped measurement. Isn't that measuring the entire frequency spectrum? Within the parameters of the speakers, of course.
OK, it was a crazy idea and I won't do it that way. However, I'm not sure how I set up REW for a grouped measurement. Isn't that measuring the entire frequency spectrum? Within the parameters of the speakers, of course.
Just mute all but left side and then do a full sweep.
I always just do full sweeps for every speaker. The crossovers will take care of frequencies I actually want/don’t want to be played.
OK, it was a crazy idea and I won't do it that way. However, I'm not sure how I set up REW for a grouped measurement. Isn't that measuring the entire frequency spectrum? Within the parameters of the speakers, of course.
For tuning in groups, follow Andy's tuning guide. He walks you through the process step by step.
I've been trying to use Andy's guide but, it gets a bit confusing as his example is using a very old version of REW and I have the newest. While they are basically the same, there are 'improvements' in the new one but, I'll give it another go now that I'll be measuring in a group pattern.
I've been trying to use Andy's guide but, it gets a bit confusing as his example is using a very old version of REW and I have the newest. While they are basically the same, there are 'improvements' in the new one but, I'll give it another go now that I'll be measuring in a group pattern.
It's the same program. None the changes between versions are used in any way. The instructions are identical to today's version of REW.
Did my first 'successful' tune yesterday with the advice suggested in this thread. Tuning the system as a group, I can see that there is very little in the way of adjustments that needed to be done. No well defined 'spikes' in the graph but still, enough to make measurements of each speaker combo to make corrections in the frequency response. I did 4 measurements of each speaker combo including the rear speakers and averaged those measurements for each and that is what I used to make the corrections.
Even though running the rear speakers as part of the tune is not considered necessary, it doesn't seem to interfere with the tune in my initial listening. If anything, it gives me something to 'mess with' as I scrutinize what I've done so far. My initial impression is noticing that the bass does get pushed to the front so, that tells me I did something right when I made the adjustments. The other thing I noticed is it seems to have a 'mono' shape to it although I confess I didn't spend a lot of time listening after the tune which was the plan. I didn't think I could be as objective about what I did unless I came back for 'seconds' so, I closed up shop and will go out and take a second listen later. At this point though, it would appear that I moved the sound to the correct position as is part of the goal of the tune.
Did my first 'successful' tune yesterday with the advice suggested in this thread. Tuning the system as a group, I can see that there is very little in the way of adjustments that needed to be done. No well defined 'spikes' in the graph but still, enough to make measurements of each speaker combo to make corrections in the frequency response. I did 4 measurements of each speaker combo including the rear speakers and averaged those measurements for each and that is what I used to make the corrections.
Even though running the rear speakers as part of the tune is not considered necessary, it doesn't seem to interfere with the tune in my initial listening. If anything, it gives me something to 'mess with' as I scrutinize what I've done so far. My initial impression is noticing that the bass does get pushed to the front so, that tells me I did something right when I made the adjustments. The other thing I noticed is it seems to have a 'mono' shape to it although I confess I didn't spend a lot of time listening after the tune which was the plan. I didn't think I could be as objective about what I did unless I came back for 'seconds' so, I closed up shop and will go out and take a second listen later. At this point though, it would appear that I moved the sound to the correct position as is part of the goal of the tune.
Just to clarify, by "mono" you mean that the voice is centered on the center line of the windshield but you still hear the left and right audio being produced as it should be (on the left and right side of the vehicle)?
Yes, the voice is as it should be but, I'm not sure about the rest. My initial impression is that everything is mono but, that's why I need to go back and take a second listen. I didn't feel I could really be objective about it right after I did the tune.
Went out a while ago and listened to my 'tuned' system again for a better perspective. I did an A/B using my Vol/preset controller seen in the pic below. It's an optional piece for the Dayton 408 for those that are unaware. What I found that with the preset I've been using, the sound was more open to the cab than the tuned preset. The tuned preset was more centric and focused in the driver position where the sound was placed before you. This must be the effect of having both front speakers tuned to each other. Makes the experience sound more real. All in all, I'm quite pleased with the result but, I'm quite sure I'll be doing more tweaking. I think with this tune, I can go back to the basic setup of the amp and make some fine adjustments to ensure it's optimally set. For now I think it's as good as the system can perform and it ain't bad.
So I happened to fall into some luck this week. Justin Zazzi (Jazzi's tuning guide is the one I referenced) just moved to Tempe and is working for Rockford Fosgate! He actually came into my classroom (I teach physics and film/tv productions classes to high school students) and went over speaker design for our build your own speaker project. When we have time, I will have to pick his brain about his tuning guide and get all of the details on how to best implement it!
04-16-2019, 08:23 PM
