Alpine IVA-W502E About the Crossover, 51-EN, Crossover X-OVER, 2ch FRONT/REAR/SUBW. mode

These values are the time correction values for the different speakers. Setting these values to make each sound reach the listening position at the same time as the sound of other speakers.

Time Correction Value List

Delay	Time	Distance	Distance	Delay	Time	Distance	Distance
	Difference				Difference
Number		(cm)	(inch)	Number		(cm)	(inch)
	(ms)				(ms)
0	0.0	0.0	0.0	51	5.1	173.4	68.3
1	0.1	3.4	1.3	52	5.2	176.8	69.7
2	0.2	6.8	2.7	53	5.3	180.2	71.0
3	0.3	10.2	4.0	54	5.4	183.6	72.4
4	0.4	13.6	5.4	55	5.5	187.0	73.7
5	0.5	17.0	6.7	56	5.6	190.4	75.0
6	0.6	20.4	8.0	57	5.7	193.8	76.4
7	0.7	23.8	9.4	58	5.8	197.2	77.7
8	0.8	27.2	10.7	59	5.9	200.6	79.1
9	0.9	30.6	12.1	60	6.0	204.0	80.4
10	1.0	34.0	13.4	61	6.1	207.4	81.7
11	1.1	37.4	14.7	62	6.2	210.8	83.1
12	1.2	40.8	16.1	63	6.3	214.2	84.4
13	1.3	44.2	17.4	64	6.4	217.6	85.8
14	1.4	47.6	18.8	65	6.5	221.0	87.1
15	1.5	51.0	20.1	66	6.6	224.4	88.4
16	1.6	54.4	21.4	67	6.7	227.8	89.8
17	1.7	57.8	22.8	68	6.8	231.2	91.1
18	1.8	61.2	24.1	69	6.9	234.6	92.5
19	1.9	64.6	25.5	70	7.0	238.0	93.8
20	2.0	68.0	26.8	71	7.1	241.4	95.1
21	2.1	71.4	28.1	72	7.2	244.8	96.5
22	2.2	74.8	29.5	73	7.3	248.2	97.8
23	2.3	78.2	30.8	74	7.4	251.6	99.2
24	2.4	81.6	32.2	75	7.5	255.0	100.5
25	2.5	85.0	33.5	76	7.6	258.4	101.8
26	2.6	88.4	34.8	77	7.7	261.8	103.2
27	2.7	91.8	36.2	78	7.8	265.2	104.5
28	2.8	95.2	37.5	79	7.9	268.6	105.9
29	2.9	98.6	38.9	80	8.0	272.0	107.2
30	3.0	102.0	40.2	81	8.1	275.4	108.5
31	3.1	105.4	41.5	82	8.2	278.8	109.9
32	3.2	108.8	42.9	83	8.3	282.2	111.2
33	3.3	112.2	44.2	84	8.4	285.6	112.6
34	3.4	115.6	45.6	85	8.5	289.0	113.9
35	3.5	119.0	46.9	86	8.6	292.4	115.2
36	3.6	122.4	48.2	87	8.7	295.8	116.6
37	3.7	125.8	49.6	88	8.8	299.2	117.9
38	3.8	129.2	50.9	89	8.9	302.6	119.3
39	3.9	132.6	52.3	90	9.0	306.0	120.6
40	4.0	136.0	53.6	91	9.1	309.4	121.9
41	4.1	139.4	54.9	92	9.2	312.8	123.3
42	4.2	142.8	56.3	93	9.3	316.2	124.6
43	4.3	146.2	57.6	94	9.4	319.6	126.0
44	4.4	149.6	59.0	95	9.5	323.0	127.3
45	4.5	153.0	60.3	96	9.6	326.4	128.6
46	4.6	156.4	61.6	97	9.7	329.8	130.0
47	4.7	159.8	63.0	98	9.8	333.2	131.3
48	4.8	163.2	64.3	99	9.9	336.6	132.7
49	4.9	166.6	65.7
50	5.0	170.0	67.0

About the Crossover

Crossover (X-OVER):

This unit is equipped with an active crossover. The crossover limits the frequencies delivered to the outputs. Each channel is controlled independently. Thus, each speaker pair can be driven by the frequencies for which they have been optimally designed.

The crossover adjusts the HPF (high pass filter) or LPF (low pass filter) of each band, and also the slope (how fast the filter rolls off the highs or lows).

Adjustments should be made according to the reproduction characteristics of the speakers. Depending on the speakers, a passive network may not be necessary. If you are unsure about this point, please consult your authorized Alpine dealer.

4.2ch (FRONT/REAR/SUBW.) mode

	Cut-off frequency		Slope
	(1/3 octave steps)				Level
	HPF	LPF	HPF	LPF
				FLAT, 6,
Low range	----	20 Hz -	----	12, 18,	0 to
speaker		200 Hz		24 dB/	–12 dB
				oct.
Rear high	20 Hz -		FLAT, 6,		0 to
range		----	12, 18,	----
	200 Hz				–12 dB
speaker			24 dB/oct.
Front high	20 Hz -		FLAT, 6,		0 to
range		----	12, 18,	----
	200 Hz				–12 dB
speaker			24 dB/oct.

Low range High range

(Different from actual display)

2.2ch (3WAY) mode

	Cut-off frequency		Slope
	(1/3 octave steps)				Level
	HPF	LPF	HPF	LPF
Low		20 Hz -		FLAT, 6,	0 to
range	----		----	12, 18,
		200 Hz			–12 dB
speaker				24 dB/oct.
Mid range	20 Hz -	20 Hz -	FLAT, 6,	FLAT, 6,	0 to
			12, 18,	12, 18,
speaker	200 Hz	20 kHz			–12 dB
			24 dB/oct.	24 dB/oct.
High	1 kHz -		FLAT*
	20 kHz,				0 to
range		----	6, 12, 18,	----
	(20 Hz ~				–12 dB

24dB/oct.

20 kHz)*

*Only when selecting User’s in “Setting the Response Slope for the High Range Speaker (TW SETUP)” (page 47).speaker

Low range Mid range High range

(Different from actual display)

51-EN