Alpine IVA-D300 Adjusting and Storing/Recalling the Bass Focus, 38-EN, Storing Adjusted Contents

Example 2. Listening Position: All Seats

Adjust the time correction level of each speaker to almost the same level.

1Sit in the listening position (driver’s seat, etc.) and measure the distance (in meters) between your head and the various speakers.

2Calculate the difference between the distance to the farthest speaker and the other speakers.

L = (distance to farthest speaker) – (distance to other speakers)

3Divide the distances calculated for the speakers by the speed of sound (343 m/s (765 mph) at 20˚C).

These values are the time correction values for the different speakers.

Adjusting and Storing/Recalling the Bass Focus

The time difference between the front-rear/left-right speakers, can be adjusted at the same time. With an initial delay of 0.1 ms for each of the 0 to 99 steps, audible time correction can be done.

Setting item: BASS FOCUS

Setting contents: 0-99

1 Touch [ ] of BASS FOCUS.

The screen changes to the BASS FOCUS setup screen.

2Set the delay number in the front and rear as well as on the right and left by touching either button [;] or [:] of the front, rear, right and left speakers.

3Repeat the Step 2 above to set another channel (speaker).

4Touch [RETURN] to return to the previous screen.

•Any manual time correction adjustments will also affect corrections made for bass focus.

Storing Adjusted Contents

The following operation is performed after Step 4 above.

5Touch [MEMORY].

6Within 5 seconds, touch any one of preset buttons [P.SET 1] through [P.SET 6] on the BASS ENGINE screen.

The adjusted contents are stored on the P.SET number you touch.

•The stored contents on the P.SET number remain undeleted despite a following reset operation or disconnection of the battery power cord.

•Adjusted/set contents of each setting item in Bass Engine can be stored in the preset buttons (1 through 6).

Recalling the Adjusted and Stored Contents

Following operation is performed after Step 4 above.

5Touch any one of [P.SET 1] to [P.SET 6] on the BASS ENGINE screen.

Recall the adjusted and stored contents.

Time Difference Table

Number of	Time	Distance			Number of	Time	Distance
	Difference					Difference
Steps		cm (inch)			Steps		cm (inch)
	(ms)					(ms)
0	0.0	0.0			51	5.1	174.9	(68-7/8")
1	0.1	3.4 (1-3/8")			52	5.2	178.4	(70-1/4")
2	0.2	6.9 (2-3/4")			53	5.3	181.8 (71-9/16")
3	0.3	10.3	(4-1/16")		54	5.4	185.2	(72-7/8")
4	0.4	13.7	(5-3/8")		55	5.5	188.7	(74-1/4")
5	0.5	17.2	(6-13/16")		56	5.6	192.1	(75-5/8")
6	0.6	20.6	(8-1/8")		57	5.7	195.5	(77")
7	0.7	24.0	(9-7/16")		58	5.8	198.9 (78-5/16")
8	0.8	27.4 (10-13/16")			59	5.9	202.4 (79-11/16")
9	0.9	30.9	(12-3/16")		60	6.0	205.8	(81")
10	1.0	34.3	(13-1/2")		61	6.1	209.2	(82-3/8")
11	1.1	37.7 (14-13/16")			62	6.2	212.7	(83-3/4")
12	1.2	41.2	(16-1/4")		63	6.3	216.1 (85-1/16")
13	1.3	44.6	(17-9/16")		64	6.4	219.5	(86-3/8")
14	1.4	48.0	(18-7/8")		65	6.5	223.0	(87-3/4")
15	1.5	51.5	(20-1/4")		66	6.6	226.4	(89-1/8")
16	1.6	54.9	(21-5/8")		67	6.7	229.8	(90-1/2")
17	1.7	58.3 (22-15/16")			68	6.8	233.2 (91-13/16")
18	1.8	61.7	(24-1/4")		69	6.9	236.7 (93-3/16")
19	1.9	65.2	(25-5/8")		70	7.0	240.1	(94-1/2")
20	2.0	68.6	(27")		71	7.1	243.5	(95-7/8")
21	2.1	72.0	(28-3/8")		72	7.2	247.0	(97-1/4")
22	2.2	75.5 (29-11/16")			73	7.3	250.4 (98-9/16")
23	2.3	78.9	(31-1/16")		74	7.4	253.8	(99-7/8")
24	2.4	82.3	(32-3/8")		75	7.5	257.3 (101-1/4")
25	2.5	85.8	(33-3/4")		76	7.6	260.7 (102-5/8")
26	2.6	89.2	(35-1/8")		77	7.7	264.1	(104")
27	2.7	92.6	(36-7/16")		78	7.8	267.5 (105-5/16")
28	2.8	96.0	(37-3/4")		79	7.9	271.0 (106-11/16")
29	2.9	99.5 (39-13/16")			80	8.0	274.4 (108-1/16")
30	3.0	102.9		(40-1/2")	81	8.1	277.8 (109-3/8")
31	3.1	106.3		(41-7/8")	82	8.2	281.3 (110-3/4")
32	3.2	109.8		(43-1/4")	83	8.3	284.7 (112-1/16")
33	3.3	113.2 (44-9/16")			84	8.4	288.1 (113-1/16")
34	3.4	116.6		(45-7/8")	85	8.5	291.6 (114-3/4")
35	3.5	120.1 (47-5/16")			86	8.6	295.0 (116-1/8")
36	3.6	123.5		(48-5/8")	87	8.7	298.4 (117-1/2")
37	3.7	126.9 (49-15/16")			88	8.8	301.8 (118-13/16")
38	3.8	130.3 (51-5/16")			89	8.9	305.3 (120-3/16")
39	3.9	133.8 (52-11/16")			90	9.0	308.7 (121-1/2")
40	4.0	137.2		(54")	91	9.1	312.1 (122-7/8")
41	4.1	140.6		(55-3/8")	92	9.2	315.6 (124-1/4")
42	4.2	144.1		(56-3/4")	93	9.3	319.0 (125-9/16")
43	4.3	147.5 (58-1/16")			94	9.4	322.4 (126-7/8")
44	4.4	150.9		(59-3/8")	95	9.5	325.9 (128-5/16")
45	4.5	154.4		(60-3/4")	96	9.6	329.3 (129-5/8")
46	4.6	157.8		(62-1/8")	97	9.7	332.7	(131")
47	4.7	161.2 (63-7/16")			98	9.8	336.1 (132-5/16")
48	4.8	164.6		(64-3/4")	99	9.9	339.6 (133-11/16")
49	4.9	168.1 (66-3/16")
50	5.0	171.5		(67-1/2")

38-EN