Physics at Speed
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Road Captain
Joined: Jul 2019
Posts: 720
Likes: 48
From: Fort Worth
Physics at Speed
Most of you guys have probably known this for quite a while, but I'm just wrapping my mind around it. At speed, nearly all of the audible sounds seem to be coming from in front of me. The lid 8s sound great in the garage, but at highway speed, I can turn them on and off and they really seem to serve as "fill" sound. They augment the front and give the fronts an overall warmer sound, but I can't hear the detail from behind. Even with the WDX8Motos's, which are loud as hell, I can only hear details if I turn my head.
The one exclusion to this is when I had a pair of PRV 8mb500v2s with lots of power and a strong tune.
So here is my question. With the fronts being for the rider and the lids being for a passenger, am I better off putting in some loud and clear lowers to play with my yellow basket/horn fairing, then transitioning the rears to a warmer speaker like the PRVs to fill in the warmth to the front?
I know this is probably the exact opposite of what the competition guys do, but maybe not. I feel like I've got a great fairing setup, and tried to balance that with the lids, then fill with the lowers. It seems more efficient to possibly balance with the lowers then fill with the lids. Am I way far off....in theory?
The one exclusion to this is when I had a pair of PRV 8mb500v2s with lots of power and a strong tune.
So here is my question. With the fronts being for the rider and the lids being for a passenger, am I better off putting in some loud and clear lowers to play with my yellow basket/horn fairing, then transitioning the rears to a warmer speaker like the PRVs to fill in the warmth to the front?
I know this is probably the exact opposite of what the competition guys do, but maybe not. I feel like I've got a great fairing setup, and tried to balance that with the lids, then fill with the lowers. It seems more efficient to possibly balance with the lowers then fill with the lids. Am I way far off....in theory?
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Road Captain
Joined: Jul 2019
Posts: 720
Likes: 48
From: Fort Worth
I should have thrown in that I have a good amount of hearing loss from years of gun fire. I've got 250 watts going to each of the 8moto's and really can't tell. I can toggle the channel off and on with the DSR and tell an overall volume difference, but I just don't feel like I'm getting a real "bubble" effect.
Outstanding HDF Member
Joined: Jan 2014
Posts: 2,482
Likes: 239
From: Minnesota
Many people dont seem to realize that rear speakers have to overcome the wind to be heard at speeds. Couple that with the fact that most have 4 speakers in front and only 2 in back. How are 2 speakers with similar output going to compete with the wind and still keep up with 4 front speakers?
The best you can do is balance them by power and freqs to get a good sound. The dsp tune I use on the road is very different than parked.
The best you can do is balance them by power and freqs to get a good sound. The dsp tune I use on the road is very different than parked.
Road Master
Joined: Sep 2015
Posts: 1,168
Likes: 79
From: so cal
Many people dont seem to realize that rear speakers have to overcome the wind to be heard at speeds. Couple that with the fact that most have 4 speakers in front and only 2 in back. How are 2 speakers with similar output going to compete with the wind and still keep up with 4 front speakers?
The best you can do is balance them by power and freqs to get a good sound. The dsp tune I use on the road is very different than parked.
The best you can do is balance them by power and freqs to get a good sound. The dsp tune I use on the road is very different than parked.
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Road Captain
Joined: Jul 2019
Posts: 720
Likes: 48
From: Fort Worth
I've got some RCX Mufflers sound nice, although not that loud. I'm just thinking more about moving more volume up front and away from the lids. Maybe just use the lids with the PRV mid bass that I already have.
Grand HDF Member
Joined: Sep 2017
Posts: 3,716
Likes: 919
From: Southern Virginia
GS do you have fade functionality on your build? If so try pushing it a few notches to the rear. For testing I would get out on the open road and set the volume to where I would normally have it at that speed and then run the fader all the way to the rear. That gave me a good idea of how I needed to adjust my tune. I found that on my 6x9s they were doing "fill" duty until I cut down on the mid frequencies with my DSP and boosted the gain going to that amp. Now I get warm sound coming from the rear that blends with the front four speakers instead of just helping them out.
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Road Captain
Joined: Jul 2019
Posts: 720
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From: Fort Worth
I don't have fade. I have a Sony HU going to a DSR. I suppose in theory I could boost the rear channel which would do the same thing.
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From: indiana
GS you should have fade with the Sony hu. Just go to settings , sound and then balance. You can fade the output a couple of notches to the rear and that should make a difference depending on how you have the dsp installed. Out of the Sony head unit run a set of RCAs From the front of the Sony into channel 1 and two of the DSP. Run the rear in to channel 3 and four of the DSP and then go from there.