Orion Car Audio DEQ 30 manual Digital Inputs

DIGITAL INPUTS

COM

PO

RT

RES

ET

DIG

ITAL

POW

ER

R

G

TO

SLIN

EM

ND

K

1

O

2V

UT

ANA

LOG

TO

S/

O

UTPUT

DIGALOG/

CO

IN

AX AN

ITAL

COAX

L

L	R		L	ANALOG
	R
				BA			IN	PUT
		RCA	R		LAN
			RCA			CED
									INPUT
				L
							R		ADJUST
									L
									R

14

Roll-off response errors are caused by deficiencies in driver performance, driver placement, enclosure design and vehicle acoustics. This type of response error usually is inaudible in all but the most demanding music. However for competition systems potential points can be lost with a system that has deficiencies in these areas.

Non-Equalizer Solutions

Changing the tweeter positioning can improve the high frequency response of the system. Modifying the crossover works exceptionally well in passive crossover design that uses a resistor to attenuate the tweeters output. This can be accomplished by placing a capacitor between the positive input lead of the crossover and the tweeter positive output lead. Use a capacitor from this formula [C= 1/(2šRƒ)] where C is the capacitor value in farads, ƒ is the starting frequency where the roll-off begins and R is the nominal impedance of the tweeter. In the above situation the nominal impedance is 4 , the starting roll-off frequency is 12,500Hz. The capacitance would be [1/(2 x

3.14x 4 x 12,500)]. The answer is 3.18 x 10-6F or an approximate 3.3µF. Try larger and smaller values to create different response curves. For low frequency drivers you can try a different enclosure types or placement.

Equalizer Solutions

In this situation, boosting the DEQ 30 is really the only solution. Care must be taken not to exceed the excursion limits of the woofers and the power handling of the tweeter. Also, do not exceed the maximum undistorted output level of the DEQ 30. When you exceed the maximum output level, it is indicated by the illumination of the “Clip” LED located on the front display panel.

39