CONTENTS											ix
CHAPTER														PAGE
6.8	LOUDSPEAKER			BAFFLES • • •• • •...			•	... • .•• ••• ...			• . ••• • • • ••				149
	A. Irregular			Baffle ........................							...	........			149
	B. Large Baffle, Different Resonant Frequencies											..	. ...	. .	149
	C. Low Resonant Frequency, Different								Baffle Sizes ... . .						150
	D. Different Resonant Frequencies and Different Baffle
	Sizes		...........................						....	....		. ...	. ...	.	152
6.9	CABINET LOUDSPEAKERS				..•..	•••.•••••.•• • • • • •• ••.•.• .• •									152
	A. Low Resonant Frequency, Different Cabinet Sizes ....														153
	B. Different Resonant Frequencies and Different Cabinet
	Sizes		.......................					. .... . .		. .....		.	.......		154
	C. Effect of the Depth of the						Cabinet .. ..			......		.	.. .	...	155
6.10	BACK ENCLOSED CABINET LOUDSPEAKER . • • • • ••••• . • ••..													••	155
6.11	COMPOUND		DIRECT RADIATOR			LOUDSPEAKER				•..	••• •		..•.•.•		157
6.12	ACOUSTICAL PHASE INVERTER LOUDSPEAKER . •• .•••												..•.••.		159
6.13	DRONE CONE PHASE INVERTER .•..							•••••••.• ••• •				...	••••••		161
6.14	ACOUSTICAL LABYRINTH LOUDSPEAKER .••..									•.••••.•.•....					162
6.15	COMBINATION HORN AND DIRECT RADIATOR LOUDSPEAKER ..														163
6.16 LOUDSPEAKER				MECHANISMS		FOR	SMALL		SPACE			REQUIRE­
	MENTS	•...	• . ••. • •.. . ....		•• •.•		..•.• •• .• • •••••••••••••.•								167
6.17	FEEDBACK ApPLIED TO A LOUDSPEAKER • ...									• •...		• ••••••.•			168
6.18	CABINET CONFIGURATION				...	. ..	• . • • . •• .•.•. • • • ...					••..		•.•	169
6.19 LOUDSPEAKER				MOUNTING	ARRANGEMENT				IN	THE		CABINET
	WALL	. • .........		•• • . • . • . .		.. •	...	• • • • . ...•		• •• •••			..•••••		169
6.20	LOUDSPEAKER LOCATIONS IN TELEVISION RECEIVERS												• • .••..		171
6.21	LOUDSPEAKER LOCATIONS IN PHONOGRAPHS . • ......												•....	•	173
6.22	LOUDSPEAKER LOCATIONS IN RADIO RECEIVERS •										..	•• • • •.		. ••	176
6.23	LOUDSPEAKER LOCATIONS IN COMBINATION INSTRUMENTS .. 177
6.24	CONCENTRATED SOURCE LOUDSPEAKER .•..								• • • .•. • ..			•.•..		• .	178
6.25	TRANSIENT		RESPONSE .........				•. ...	. . . . .. .		. ..	.	. • .	. .•.•.		178
6.26	DISTORTION		.............		• .........		.	. .• ....•		•.........				• .	183
	A. Distortion Due to Nonlinear Cone System ..........														183
	B. Nonlinear Suspension System ..							... . ................							184
	C. Distortion Characteristics of a Nonlinear Suspension
	System			......... .	... ...	..	.. .	. ...................							186

D.Response Frequency Characteristics of a Direct Radi­ ator Loudspeaker with a Nonlinear Suspension System 188

E.Distortion Due to Inhomogeneity of the Air Gap Flux 188

			F. Frequency Modulation Distortion					...................			190
			G. Air Nonlinear Distortion . . .......				. ................				190
		6.27	DIAPHRAGMS, SUSPENSIONS, AND VOICE ...COILS						••.••.•• •		192
	r	6.28	HIGH	FREQUENCY SOUND DISTRIBUTOR .. .... ..				•• • ••	•.•	••	197
		6.29	FIELD	STRUCTURES		•• .••.•. • ••••• • .•			• .•.••	••	198
		6.30	ELECTROSTATIC LOUDSPEAKER . . •.				.•..• . .. . .. ...... •••		• • •		205
		6.31	SOUND POWER EMITTED BY A LOUDSPEAKER ... .. . . .•						•	•••.	210
		6.32	LOUDSPEAKER DIRECTIVITY INDEX				..•.• ..•• .••		• .•.••.•• ••		211
		VII. HORN LOUDSPEAKERS
		7.1	INTRODUCTION		•• •. • . ••• ••• • • • • • . • • . . . . . . . . . .			•	• • • • •	• • • •	212
		7.2	EFFICIENCY . •		... • . • ...	•• ••••.••.	. •. . ..	•• • . •• ••••• • . •••			212