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Comma Seperated Value File  |  1988-04-11  |  11KB  |  302 rows

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#	Copyright 1988 by Tamco Systems, Inc.									OK		OK		OK	{menubranch o4}
1	393 Jericho Turnpike, Mineola NY 11501						<----MICROPHONE-->------		<-----MIXER--->		<----POWER AMP--->		<----SPEAKER----->
2							74	dB SPL	41	dBampl	26	dBampl	8	ohms
3		TTTTTTTTTTT		SSSSSSSS		IIIII	150	ohms	115	ohms	15000	ohms inp	10	ft to target	Intelligibility	Stability	LS Sens	Levels	Pads	AIP	Ohm's L	Heat L
4		TTT		SSS		III	74	dBSPL ref	2100	ohms			93	dB SPL sens	Intelligibility analysis, Sabine equation	PAG-NAG equations	Helps predict the output level of loudspeakers given various parameters	Predicts electrical and acoustic levels of a simple system	Helps in the design of simple L or H pads	Available Input Power calculations	Ohm's Law equations for ready calculations	Heat Loss equation based on electrical power consumed
5		TTT		SSSSSSSS		III	0.00006	v @ ref	6.15	V max	20	V max	4	feet,1 watt	{goto}a21~	{goto}a61~	{goto}a81~	{goto}g1~	{goto}g21~	{goto}a101~	{goto}a161~	{goto}a201~
6		TTT		SSS		III							8	watts max
7		TTT		SSSSSSSS		IIIII	*	*	*	*	*	*	*	*
8							Es microphone		E inp (MIX)		E inp (PA)		Power out
9							0.00006		0.000056884876	volts	0.0063340272	volts	0.0019965025	watts
10		Acoustic Formulae Worksheet					EIN (30Hz-15kHz)		Ampl		Ampl		dB loss dist
11			Version 2.0				-138.2729	dBm	112.20185		19.952623		-7.9588002	dB
12							S/N		Es,mixout		Es, amp out
13		To invoke applications, press "ALT"					56.054416	dB	0.006382588	volts	0.12638046	volts
14		and "Z" together and choose from menu					AIP		AIP				Output level
15							-82.218487	dBm	-40.527642	dBm			3.0026986	dBm
16							*	*	*	*	*	*	*	*
17								Mixer Gain		41.690845	dB	Sys Gain	-15.956102	dB
18								Amp gain		43.530341	dB	L at ears	58.043898	dB-SPL
19								Sys Elec Gain		85.221186	dB
20	INTELLIGIBILITY ANALYSIS									*** PAD ANALYSIS ***
21
22							If you know:		Source Imp	115	ohms
23	Q of Loudspeaker								R1	10000	ohms	(R1 balanced =
24	Reverb Time	2.5	sec						R2	250	ohms		5000	ohms)
25	Volume of room	185328	cu ft						R input	15000	ohms
26	Surface Area	20268	sq ft				Then:
27	Max dist D2	72	ft				Effective pad loss:			-32.492723	dB
28	M	1
29	N	2									* OR *
30							If you know:
31
32	Minimum Q	7.6456876		X:	23	FEET			Source Imp	115	ohms
33				Y:	34	FEET			R2	250	ohms
34	Max D2	0		Z:	24	FEET			dB Loss	-40	dB
35				DIST:	47.549974	FEET			R input	15000	ohms
36	Ref distance	4		TIME:	0.042079623	SECONDS	Then:
37	Distance	10							R1	24229.262	ohms	(and R1 balanced would be
38	Inverse sq loss	-7.9588002											12114.631	ohms)
39
40
41							VOLUME AND SURFACE AREA OF "STANDARD CHURCH"
42
43								WIDTH	36.75
44								LENGTH	73.3
45							HT OF SIDE WALLS		18
46								HT @ APEX	35
47
48
49									VOLUME:		71385.037
50
51									SURFACE AREA:		10950.132
52
53
54
55
56
57
58
59
60	PAG - NAG EQUATIONS
61
62	D1	22
63	DS	0.5
64	D2	84
65	EAD
66	NOM	3
67
68
69	Maximum DS	0
70
71	Minimum D1	#DIV/0!		Read the solution here,
72				disregarding !all! the other
73	Maximum D2	0		parameters
74				<===
75	Minimum EAD	6.6132849		X:	36	FEET
76				Y:	6	FEET
77	Maximum NOM	0		Z:	0	FEET
78				DIST:	36.496575	FEET
79				TIME:	0.032297854	SECONDS
80	SPL AT EARS
81
82	1W SENSITIVITY OF LS	99	dB SPL
83	REFERENCE DIST	3.3	Feet
84	DISTANCE TO EARS	47	Feet
85	APPLIED ELECT PWR	150	Watts
86
87	SPL AT EARS	97.689234	dB SPL
88
89
90	NOTE! Loudspeaker maximum levels need not be "linear". Hence "SPL
91	AT EARS" is an ideal figure that should be derated accordingly.
92
93
94
95
96
97
98
99
100	SOLVING FOR AIP WHEN E IN IS KNOWN
101
102
103	GIVEN:
104	-
105	R in	15000	ohms
106	R source	115	ohms
107	E in	6.15	volts
108
109
110	CALCULATED:
111	-
112	E source	6.19715	volts	Gain:	27.772838	dB
113	AIP	19.216862	dBm
114
115	Power Out	20	volts
116		8	ohms
117		50	watts	46.9897	dBm output
118
119		FOR MORE EQUATIONS, PAGE DOWN
120	SOLVING FOR E IN WHEN YOU KNOW THE DESIRED AIP
121
122
123	GIVEN:
124	-
125	AIP	3.44	dBm
126	R Source	115	ohms
127	R input	15000	ohms
128
129
130
131
132	CALCULATED:
133	-
134	E Source	1.007741	volts
135	E in	1.0000737	volts
136
137
138
139		FOR MORE EQUATIONS, PAGE DOWN
140	GAIN
141
142	R input	15000
143	R source	115
144	R load	8
145	E in	6.15
146	E out	20
147
148
149	voltage ampl	10.243098
150	coupling factor	-0.066337849
151	impedance mismatch	11.576079
152	diff betw O.C. & matched	6.02
153		-
154	INSERTION GAIN	27.772838
155
156
157
158
159
160	OHM'S LAW	FOR MORE EQUATIONS, PAGE DOWN
161	ENTER:
162	volts	ohms		watts	dBm's
163	16	4		64	48.0618
164
165	volts	amps		watts	dBm's
166	1	3		3	34.771213
167
168	amps	ohms		watts	dBm's
169	2	3		12	40.791812
170
171	watts	ohms		volts
172	0.0001	15000		1.2247449
173
174	dBm	watts	ohms		volts
175	-20	0.00001	15000		0.38729833
176
177	dBu			volts (ref .775v)
178	-54			0.0015463283
179
180	MORE OHM'S LAW AND DECIBELS
181
182
183	Voltage ampl	81	dB
184		11220.185	ratio
185
186	Voltage ratio	2
187		6.0205999	dB
188
189	Power gain	3	dB
190		1.9952623	power ratio
191
192
193
194
195
196
197
198
199
200
201	HEAT LOSS IN BTU'S PER HOUR
202
203	POWER DISSIPATED = (AC LINE INPUT PWR - POWER OUTPUT) * 3.4
204
205
206		P(AC):	152
207		P(OUT)	20
208
209
210		P(DISS)	448.8
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229							# objects
230								1
231								2
232								3
233								4
234								5
235								6
236								7
237								8
238								9
239								10
240								11
241								12
242								13
243								14
244								15
245								16
246								17
247								18
248								19
249								20
250								21
251								22
252								23
253								24
254								25
255								26
256								27
257								28
258								29
259								30
260										SPKRIMP		G22
261										SPL AT EAR		G40
262										SPL AT MIC		A22
263										TARGET DIST		G23
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283										245.90164	0.01
284										0.023733614	245.90164
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300									{goto}a93~/rv.{end}{down}~{right}~{right}/rfh{end}{down}~
301									{goto}C91~/rv.{end}{right}~{down}~{down}/rfh{end}{right}~