Simple 12" Infinity Kappa VQ MidQ Plans

[ParadigmDawg]

Ok guys, I am pretty certain that I am going to sale the Servo and try a couple of these. Any downside to this plan?

[WmAx]

Ok guys, I am pretty certain that I am going to sale the Servo and try a couple of these. Any downside to this plan?

Let's see....

1. Far superior performance...

2. You get a valuable learning experience...

3. Lower cost than a commercial sub of far lower quality...

I can't seem to find the negatives......

Oh, wait.... there is no warranty on your own built product. Is that a problem?

-Chris

[ParadigmDawg]

Cancel the "valuable learning experience", you know who will be doing the dirty work.

Let's see....

1. Far superior performance...

2. You get a valuable learning experience...

3. Lower cost than a commercial sub of far lower quality...

I can't seem to find the negatives......

Oh, wait.... there is no warranty on your own built product. Is that a problem?

-Chris

[jboogie]

I will be starting my build of these starting on Wed. I am going to integrate a plate amp, but that should have minimal effect on the overall plan.

(For those that saw some of my other ?'s and replies, I have decided to keep the plate amp and simply upgrade at a later time.)

I will post with any progress or insights.

Again, thank you so much!

[Haoleb]

Where are you going to mount the plate amp? There is little room inside the sub for something like that. If you put it on the back you'll be blocking the airflow in the port (depending on how deep it is)

[WmAx]

DO NOT INSTALL the plate amp in any part of a port wall.

-Chris

[Djizasse]

I've seen this on sale:
http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=370065635446

It refers to the "INFINITY KAPPA SERIES PERFECT 12D VQ" (notice the "D" after the 12).

I consulted the infinity site but was unable to understand the differences between the "12 VQ" and the "12D VQ" versions.

Is it still appropriate to this project?

[WmAx]

I've seen this on sale:
http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=370065635446

It refers to the "INFINITY KAPPA SERIES PERFECT 12D VQ" (notice the "D" after the 12).

I consulted the infinity site but was unable to understand the differences between the "12 VQ" and the "12D VQ" versions.

Is it still appropriate to this project?

The 'D' stands for dual-voice coil. The one that all of the cabinet designs is given for here is the single-voice coil version.

-Chris

[gus6464]

Not to hijack the thread, but if one wanted less extension (25Hz max) would it possible to put these drivers in a smaller sealed enclosure?

[avaserfi]

Not to hijack the thread, but if one wanted less extension (25Hz max) would it possible to put these drivers in a smaller sealed enclosure?

This would be possible with the correct driver/amplifier/cabinet integration. The largest loss with using a sealed cabinet would be increased distortion, maximum SPL and low frequency response. It is important to note that a driver capable of being equalized with minimal distortion down to 25Hz in a sealed cabinet will be very expensive.

A cheaper option would be designing a ported cabinet that uses utility port. That is the port is not sufficiently designed to eliminate port compression (so it is smaller), but compression will occur out of the intended passband due to tuning frequency and DCX integration.