Kenwood KAC 7204 AMP

[Grinder]

Hey Smitty, thanks for the input. I really appreciate you being patient with me. That goes for everyone. Queer, Grinder etc.

When you say "The power handling will drop in the low frequencies as I go larger than 1.3 cuft", do you mean low frequencies as in deeper bass ? The HZ is also confusing. What does that pertain to?

Oh, btw, I seen that Sonic Electronics was having an extended cyber monday sale. They have the IDs on their website but when I messaged them through their Facebook ad, they told me that the subs are discontinued and they dont carry them. However, Walmart online does have them. Of course they are partnered with companies that deal subs I'm sure

Lower frequencies require greater excursion, and larger cabinet volume requires less power to reach a given excursion, in which case mechanical power handling would be reduced commensurate to greater cabinet volume (and lower frequencies). Hz is the abbreviation of Hertz (frequency).

[Queef]

It will make sound , no matter , but if you think it will make the lower vibratory sounds , that is determined by power and muchness of box .
All that stuff [ hertz,frequency,decibels,inductance,crossovers,pha se] you may not understand fully yet , but you ,just like everyone else will either go : yay or nay !

https://images.app.goo.gl/MfDfwHdFcxy2RQnE6
https://www.google.com/search?q=stev...W0UJL88xl1VKM:

Eric Stevens was Image Dynamics.

Hey, Smitty , you come up with a frequency for cabin gain ?

[Packers27]

It will make sound , no matter , but if you think it will make the lower vibratory sounds , that is determined by power and muchness of box .
All that stuff [ hertz,frequency,decibels,inductance,crossovers,pha se] you may not understand fully yet , but you ,just like everyone else will either go : yay or nay !

Aw yeah I'm sure I'll want to know more one day lol.

Quick question about amp turn on wire. My metra harness has the amp wire(blue) but my factory wiring plug does not. Whats the easiest way to solve this issue? Maybe splice the yellow(switches 12v) and tie in my amp wire there?

[Queef]

http://www.caraudiohelp.com/newsletter/cabin_gain.html
https://www.crutchfield.com/S-ENF99T...-KAC-7204.html

Your amp will have signal sensing , just needs some 12v power.

[Packers27]

Thanks man

[Queef]

Efficiency = 85.4
You just need to do some sweeps to see if it is giving it's all where you want it to.

If it 'hits' around 50 hertz , may make your day . If you want lower notes (port the box)!

[Queef]

Hey Smitty, thanks for the input. I really appreciate you being patient with me. That goes for everyone. Queer, Grinder etc.

When you say "The power handling will drop in the low frequencies as I go larger than 1.3 cuft", do you mean low frequencies as in deeper bass ? The HZ is also confusing. What does that pertain to?

When cubic feet (more/bigger) increase , it takes less power to go "clack" or bottom out voice coil on frame . You are hoping that as it plays lower notes , it does so with a vengeance ( thunderous Lows !).

You may find that .8 cu ft is worth a try [take up .4 cu ft ] or you may decide you want more and stuff the box with upto 1.5 pounds per cu ft to get a drop in reproduced frequencies.

[Queef]

With 86 efficiency it may need more power than say a sub rated 96 (like a CV Stroker ).

Attachment 7961

A round DWV pvc tube could be slid into this nook from whichever end (holesaw) and a 90 degree elbow added , then enough pipe to tune down around 30 hertz ! The elbows come in 90/45/22.5 degrees.

If you want , glue or silicone a piece of cardboard over the rear nook [ to hear difference ]

[Smitty]

Sean aka Ibanender , thinks 45 hZ - 50 hZ for transfer function
FricaseeKid started thread on a full-size truck forum and Sean ess-plained.

If I understood it correctly, that discussion was more about an SPL box. Ibanender was explaining the same thing I was trying to explain. There is no magic way to calculate the exact peak because there are too many variables to just pop out a number for a vehicle we don't have in our possession to properly measure. I agree with him. Also note they are discussing "peak" frequency. In this discussion, I was looking for the frequency at which the transfer function begins, which is 65.82 Hz, not the peak. The 45 hZ - 50 hZ comment indicates he has experience with a similar vehicle/cabin size and knows it most likely will be in that area.

In my opinion, there is no need to port this box for this application. The subs should have strong output to 20 Hz.



Green is 1.3 ft3, orange is 1.2 ft3 (the box we are discussing), and blue is 0.7 ft3.

20 Hz is the lowest frequency the average human can hear. Anything below that is only felt. With the exception of a few instruments such as a pipe organ, most music rarely dips below 30 Hz. I prefer a flatter response so I would most likely listen to it/measure it, then tune the enclosure with a block of MDF inside to get the response I desire.

[Smitty]

Have you tried here? https://www.woofersetc.com/c-23-subw...subwoofer.html