Behringer DSP1100P user manual Appendix, Operating level Switch, Frequency chart

5.5 Operating level Switch

To adapt the FEEDBACK DESTROYER PRO to the used operating level, the unit can be switched between homerecording level (-10 dBV) and professional level (+4 dBu). Use the LED bars on the frontpanel to deter- mine the optimal setting. The Level indicators should read somewhere between -10 and -6 dB, while the clip LED should not light up at all.

6. APPENDIX

6.1 Frequency chart

In order to maintain a better survey only every second value is registered in the table. The adjustable values do not exactly fit into a 1/60 octave interval, because also the ISO frequencies do not perfectly fit into a physical 1/3 octave interval. Rather a linear approximation is used to specify the values.

Background					f1,f2, ...		ISO frequency
					1 third = 20/60 octave (idealized ISO interval)
					increment		Δ fn	=	(fn +1 − fn )
										20
Display		-9/60	-8/60	-6/60	-4/60		-2/60	ISO		+2/60	+4/60	+6/60	+8/60	+10/60	Display
20	Hz							20		20.5	21	21.5	22	22.5	20	Hz
25	Hz	22.8	23	23.5		24	24.5	25		25.7	26.3	27	27.6	28.3	25	Hz
32	Hz	28.6	28.9	29.6		30.2	30.9	31.5		32.4	33.2	34.1	34.9	35.8	32	Hz
40	Hz	36.2	36.6	37.5		38.3	39.2	40		41	42	43	44	45	40	Hz
50	Hz	45.5	46	47		48	49	50		51	53	54	55	57	50	Hz
63	Hz	57	58	59		60	62	63		65	66	68	70	71.5	63	Hz
80	Hz	72.4	73	75		77	78	80		82	84	86	88	90	80	Hz
100	Hz	91	92	94		96	98	100		103	105	108	110	113	100	Hz
125	Hz	114	115	118		120	123	125		129	132	136	139	143	125	Hz
160	Hz	144	146	150		153	157	160		164	168	172	176	180	160	Hz
.20 kHz								200							.20 kHz
		182	184	188		192	196			205	210	215	220	225
.25 kHz		228	230	235		240	245	250		257	263	270	276	283	.25 kHz
.32 kHz		286	289	296		302	309	315		324	332	341	349	358	.32 kHz
.40 kHz		362	366	375		383	392	400		410	420	430	440	450	.40 kHz
.50 kHz		455	460	470		480	490	500		513	526	539	552	565	.50 kHz
.63 kHz		572	578	591		604	617	630		647	664	681	698	715	.63 kHz
.80 kHz		724	732	749		766	783	800		820	840	860	880	900	.80 kHz
1.00 kHz		910	920	940		960	980	1000		1025	1050	1075	1100	1125	1.00 kHz
1.25 kHz		1138	1150	1175		1200	1225	1250		1285	1320	1355	1390	1425	1.25 kHz
1.60 kHz		1443	1460	1495		1530	1565	1600		1640	1680	1720	1760	1800	1.60 kHz
2.0 kHz								2000							2.0 kHz
		1820	1840	1880		1920	1960			2050	2100	2150	2200	2250
2.5 kHz		2275	2300	2350		2400	2450	2500		2565	2630	2695	2760	2825	2.5 kHz
3.2 kHz		2858	2890	2955		3020	3085	3150		3235	3320	3405	3490	3575	3.2 kHz
4.0 kHz		3618	3660	3745		3830	3915	4000		4100	4200	4300	4400	4500	4.0 kHz
5.0 kHz		4550	4600	4700		4800	4900	5000		5130	5260	5390	5520	5650	5.0 kHz
6.3 kHz		5715	5780	5910		6040	6170	6300		6470	6640	6810	6980	7150	6.3 kHz
8.0 kHz		7235	7320	7490		7660	7830	8000		8200	8400	8600	8800	9000	8.0 kHz
10.0 kHz		9100	9200	9400		9600	9800	10000		10250	10500	10750	11000	11250	10.0 kHz
12.5 kHz		11375	11500	11750		12000	12250	12500		12850	13200	13550	13900	14250	12.5 kHz
16.0 kHz		14425	14600	14950		15300	15650	16000		16400	16800	17200	17600	18000	16.0 kHz
20 kHz		18200	18400	18800		19200	19600	20000							20 kHz

Tab. 6.1: frequency chart

28 6. APPENDIX