audio set-up for beginners (ARCHIVED)

**ILuvDetailing** · March 30th, 2005 06:05 PM

bad_driver: Mas maganda sana sa harap but the downside is that your door panels might rattle a little bit. What you can do is Lower the Cut Off of the High Pass Filter up front, paturo ka nalang kay Mickeys. Yung Rear Fill pwede mo din gawin slightly higher frequency than the sub. Its up to your ears to decide.

**bad driver** · April 2nd, 2005 06:43 PM

hello peeps

I got some mids on my seps and that did the trick... I still think I need more pero it's better than before. I have some questions:

1) If you put in more midbass on the seps.... would it affect it's clarity and brightness? why was it set to a minimum when I first got my system? I'm guessing para hindi masira if cranked really high?

2) If I want to DIY tuning my subs.... (to taste), would it be as easy as turning that small knob? hehe.... Im just confused with the xover knob (32-320htz) nga ba un...

could I set it anyway I want to make it pleasing to my ears? I think I asked mickey to set it to maximum to compensate for the JL W6's inherent softness, pero my friend said that it may have been to hard. I kinda agree now and nahihiya naman akong bumalik balik dun.

plus the knob has 2 dots and I don't know which way is which.... am confused and I'm a gadget freak. hehe,.

any tips?

**ILuvDetailing** · April 2nd, 2005 06:47 PM

bad_driver: can you post pics of your amps x-over knobs?

**bad driver** · April 2nd, 2005 06:57 PM

hey man,

i don't have a pic but it's simple to describe.

it is a screwdriver type knob so it's not really a knob

you'd need a small screwdriver.

it has a dot for 32 htz on the 7 o' clock position and another one for the 320 htz on the 5 o'clock position. that's it

hmmm, I can't tell where the pointer is on the "knob".

I really know squat about car amps.

**radiazone** · April 2nd, 2005 09:50 PM

Originally Posted by bad driver

hello peeps

I got some mids on my seps and that did the trick... I still think I need more pero it's better than before. I have some questions:

1) If you put in more midbass on the seps.... would it affect it's clarity and brightness? why was it set to a minimum when I first got my system? I'm guessing para hindi masira if cranked really high?

2) If I want to DIY tuning my subs.... (to taste), would it be as easy as turning that small knob? hehe.... Im just confused with the xover knob (32-320htz) nga ba un...

could I set it anyway I want to make it pleasing to my ears? I think I asked mickey to set it to maximum to compensate for the JL W6's inherent softness, pero my friend said that it may have been to hard. I kinda agree now and nahihiya naman akong bumalik balik dun.

plus the knob has 2 dots and I don't know which way is which.... am confused and I'm a gadget freak. hehe,.

any tips?

Yes you can set it, u can turn the knob, and listen to the output... I think you have seen a graphic equalizer its just like that...

**pparado** · April 3rd, 2005 03:43 AM

[QUOTE=ILuvDetailing]Now with the new ABC Box theoretically it should bridge the gap between loudness and clarity... you get the best of both worlds. [QUOTE]

ser, can you please explain what is an ABC box?
compareed to a ported and sealed....
thanks!

**ILuvDetailing** · April 3rd, 2005 11:13 PM

AFAIK ABC box is basically a ported box, but the difference is in the arrangement of ports. Not so sure how though, havn't tried it. But it will eat up a lot of space.

**odell** · April 3rd, 2005 11:38 PM

pang bayo lang un imho hehehe.. sa pagkarinig ko ng mga setups ah :D

**ILuvDetailing** · April 3rd, 2005 11:41 PM

odell: ported ba setup mo?

**busy road** · April 14th, 2005 09:43 PM

Ported Box vs. Closed Box
Ported box is a type of bass speaker enclosure that the desired resonance frequency can be tuned. Port is usually in the form of PVC tube that the length & diameter are to be considered. Diameter has to be determined to prevent undesirable noise due to air pressure. The length however, shorter makes the frequency high & vice versa.

Closed box is a fixed enclosure that can't vary the desired frequency once it has built. For this reason, speaker parameters have to be considered in designing enclosure. These are: Fs = free air resonance frequency, Qt = magnification factor & Vas = equivalent air volume. It needs a lot of computations to calculate the optimum box enclosure based on the actual speaker parameters.
Generally, speakers with good quality magnets are designed for small enclosure. Locally made speakers' Qt are high which requires high volume to achieve desired bass frequency.

Additional pointers in choosing your speakers:
1. Look for higher coil diameters. These are usually designed for bass.
2. Select with high density or big magnet for lesser volume of your box.

Example Computation:
Given Parameters
Fs = 53 Hz
Qt = 0.452
Vas = 1.23 cu.ft.
Box Volume = 15(Qt)^2.87 x (Vas) = 15(0.452)^2.87x1.23 = 1.889 cu.ft
Box Frequency = (Vas/Box Vol.)^0.32xFs = (1.23/1.889)^0.32x53 = 46.2 Hz.
Conclusion: The optimum box volume is 1.889 cu.ft with resonance frequency = 46.2 hz.