best 4" coil

[swift 501]

Sencheezy.....buy an SP4 and report back asap. Okay?

He doesnt have to, a friend of his locally bought one of my old SP4 18's. He could do a direct swap if he wanted to for comparison sakes. 

[ricksi30 923]

Sencheezy.....buy an SP4 and report back asap. Okay?

He doesnt have to, a friend of his locally bought one of my old SP4 18's. He could do a direct swap if he wanted to for comparison sakes. 

Sounds like a good idea to me!

[nadcicle 77]

 

Sencheezy.....buy an SP4 and report back asap. Okay?

He doesnt have to, a friend of his locally bought one of my old SP4 18's. He could do a direct swap if he wanted to for comparison sakes. 

Sounds like a good idea to me!

 

 

Hey hey.. Don't be bringing me into this  

wait a second.. I haven't heard of any evil's tinsel leads glow red and burst in to flames. I believe i just solved the dilemma. Evil wins /endthread lmfao just kidding. I mean, if it's for testing purposes I might, but we'd also have to factor in the fact that Sencheezy has the d2 vs.. hell iunno if i even tested what impedance these were. What were they again Swift?

 

Damn now that I think about it. I already have a meter as well. So that would actually make the test fairly umm "fair"?

Edited May 13, 2013 by nadcicle

[Shogen 325]

 

 

Sencheezy.....buy an SP4 and report back asap. Okay?

He doesnt have to, a friend of his locally bought one of my old SP4 18's. He could do a direct swap if he wanted to for comparison sakes. 

Sounds like a good idea to me!

 

 

Hey hey.. Don't be bringing me into this  

wait a second.. I haven't heard of any evil's tinsel leads glow red and burst in to flames. I believe i just solved the dilemma. Evil wins /endthread lmfao just kidding. I mean, if it's for testing purposes I might, but we'd also have to factor in the fact that Sencheezy has the d2 vs.. hell iunno if i even tested what impedance these were. What were they again Swift?

 

Damn now that I think about it. I already have a meter as well. So that would actually make the test fairly umm "fair"?

YESS!!!!

[swift 501]

That one is a d1. He could run it at .5 and just turn down the gain some. Lol

Or run it at 2 ohms on the 5500 and see how she does. Just for fun, lol. Meter both at 30, 35, and 40 hz.

[jonbearsmt 919]

a better questions is WHY are you so hung up on only looking at 4 inch Vc subs...

 

 haveing a 4 inch coil have 0 to do with getting low... and it can not be power handling because you stated you have yet to pick an amp....

 

 so why a 4 inch coil?  do you have something to prove with your coil size

[nadcicle 77]

That one is a d1. He could run it at .5 and just turn down the gain some. Lol

Or run it at 2 ohms on the 5500 and see how she does. Just for fun, lol. Meter both at 30, 35, and 40 hz.

Senchez turning the gain down some? lol yah that'll happen. I'm curious to know if/how much it might change the peak sealed/door open/all doors open as well. I think this just might be a fun test. Dammit Lee.. why man.. why? haha I feel the test might be more appropriate for a slightly smaller enclosure. That box he has now is the size of a small car in dat der explorer. 

[nadcicle 77]

a better questions is WHY are you so hung up on only looking at 4 inch Vc subs...

 

 haveing a 4 inch coil have 0 to do with getting low... and it can not be power handling because you stated you have yet to pick an amp....

 

 so why a 4 inch coil?  do you have something to prove with your coil size

 

I know right. Am I the only one sorta diggin the new Zv4's?

[///M5 2,833]

That one is a d1. He could run it at .5 and just turn down the gain some. Lol

Or run it at 2 ohms on the 5500 and see how she does. Just for fun, lol. Meter both at 30, 35, and 40 hz.

Senchez turning the gain down some? lol yah that'll happen. I'm curious to know if/how much it might change the peak sealed/door open/all doors open as well. I think this just might be a fun test. Dammit Lee.. why man.. why? haha I feel the test might be more appropriate for a slightly smaller enclosure. That box he has now is the size of a small car in dat der explorer.

For the test to make sense it should be defined in rather good detail up front. Really easy to bias a test.

[Aaron Clinton 2,372]

One thing Brad kind of touched on is that, regardless of which sub is being compared to what sub, to do a head to head test in a singular install will only show which is best for that install.  So if said install has more power, or more cabin gain, or a lower resonant frequency, etc. etc. than another, clearly results are going to be different.  

[lithium 358]

a better idea would be to do a blind comparison to remove personal bias. 

Edited May 13, 2013 by lithium

[edouble101 314]

Measurements would be easy. I would think subjective listening would require multiple people with trained ears and then a final conclusion for the test to be valid.

 

Based on product descriptions the soft parts used for the sp4 and evil are the same. The difference seems to be in the motor. The motor and the soft parts yield the same t/s parameters on both drivers. 

 

How much of a difference in maximum spl output and sound quality could there be between these two drivers?

[rowdyful7 10]

im not dead set on a 4 inch voice coil i just kinda wanted to get one i might go in another direction ive decided i want 2 18s walled off im thinking the sp4s but i might go with something else

[rowdyful7 10]

maybe zv4 18 when they come out

[Impious 1,476]

Measurements would be easy. I would think subjective listening would require multiple people with trained ears and then a final conclusion for the test to be valid.

 

Based on product descriptions the soft parts used for the sp4 and evil are the same. The difference seems to be in the motor. The motor and the soft parts yield the same t/s parameters on both drivers. 

 

How much of a difference in maximum spl output and sound quality could there be between these two drivers?

Fs, Cms and Qms are different between the drivers.  Could be a difference due to production tolerances, or it could be a difference in the suspension of the two speakers.

 

Based on the listed Re the coils are also different.  I know you said "differences seem to be in the motor", but the voice coil is part of the soft part assembly.