HDAV INC

Hello to all, i am looking for some feedback as to a few things about my audi audio system.
1 - I am looking to improve the sq but can i do that just with a component change and sub addition? Can i keep the stock head unit(non bose, non nav, Symphony system)? Or should i be looking at replacing it?

2- I want to use either Focal 130 series or Hybrid Technologies Legatia series components for my front stage and maybe focal 165cA1 for the rear doors. Any opinions on these would be helpful.

3 - i am leaning toward a JL 10w6 in a sealed box but have heard some good things about Image Dynamics Idmax d2 in a sealed box.
Also what amps would benifit these components. Leaning to JL HD series or audison.

thanks in advance for any help.

Lord Huggington

iTrader: (1)

You can keep the stock HU, and you can buy an HU with nav and all that. Replacing the stock one never hurts. If you're getting one than get one with a good EQ.

All subs mentioned are SQ subs. SSA audio, Fi, Ascendant, RE, Morel, to name a few others.

How much power are you using for the sub(s)? IDMAX is 1000W RMS and the 10W6 is 600W RMS.

I dunno how much you know about sealed box response so...

Sub choice really depends on what you listen to. With a sealed box, a flat response = QTC .707 @ FC. After that "roll-off" frequency (FC), depending on the QTC, it will roll off at -12dB/octave - as in 20-30Hz or 30-40Hz. A QTC of .707 = -12dB/octave, and a lower QTC like .4 is around .. I dunno, -8dB/octave. A QTC from .4-1.2 is generally okay. A QTC of .707 is the most efficient response, however most 10's start to roll off at ?-12dB/octave at 50-60Hz. If you want true SQ, it'll have to sound good, and dig down into the low 30's. There's a big difference between ported (+3dB - tuned to 30Hz), and a sealed boxes -24dB @ 30Hz (if the roll-off starts at 50Hz with QTC .707). The "F3" value is the -3dB down-point. Your subs may start to roll off at -12dB/octave starting at 40Hz but it can already be -3dB down at 50Hz. This is why going below QTC .707 is less efficient. When the FC & F3 are the same, that's .707 QTC. Not many sealed 10's will model to something like QTC .707 @ 30Hz in 1-2 cubes (Eclipse SW8000 in 1.75 cubes).

10W6v2 600W RMS DVC 4 ohm $uno cahonez
Efficiency 83.7dB 1W/1M
.927 cubes
QTC .7071
FC 42.97Hz
F3 42.97Hz
1.5 cubes
QTC .6269
FC 38.09Hz
F3 43.58Hz
3 cubes:
QTC .5536
FC 33.64Hz
F3 45.31Hz

IDMAX 10 1000W RMS DVC 2 or 4 ohm $300-$400
DVC 2 ohm:
Recommended 1.1 to 1.3 cubes or infinite baffle
1.1 cubes:
QTC .7583
FC 55.11Hz
F3 51.64Hz
1.3 cubes:
QTC .713
FC 51.82Hz
F3 51.4Hz
1.33 cubes:
QTC .7072
FC 51.4Hz
F3 51.39Hz

DVC 4 ohm:
Recommended .6 to .9 cubes or infinite baffle
.6 cubes:
QTC .8112
FC 50.45Hz
F3 44.79Hz
.9 cubes:
QTC .6889
FC 42.85Hz
F3 44.01Hz
6.3 cubes:
QTC .4
FC 24.88Hz
F3 52.62Hz

SSA DCON 10 300W RMS SVC 4 ohm $100
Efficiency 86.6dB 1W/1M
Recommended .75 minimum & .9 cubes "optimal"
.75 cubes:
QTC .5169
FC 49.02Hz
F3 72.68Hz
.9 cubes:
QTC .4885
FC 46.33Hz
F3 74.39Hz

Eclipse SW8000 10" 625W RMS SVC 4 ohm $150-$200
Efficiency 84dB 1W/1M
Recommended SEALED ONLY .3 cubes to 1 cube
.3 cubes:
QTC 1.4697
FC 58.79Hz
F3 41.26Hz
1 cube:
QTC .8718
FC 34.87Hz
F3 29.48Hz
1.75 cubes (QTC .7071 in 1.765 cubes)
QTC .7091
FC 28.36Hz
F3 28.28Hz

Eclipse SW8010 700W RMS SVC 4 ohm $150
Efficiency 86dB 1W/1M
Recommended 1.25 to 1.75 cubes
1.25 cubes:
QTC .4818
FC 28.1Hz
FC 46.02Hz
1.75 cubes:
QTC .4504
FC 26.27Hz
F3 47.28Hz

Lord Huggington

iTrader: (1)

DCON also comes in D4.