The design is the visual features of the Illuminated Speaker Device shown in solid lines in the drawings, whether those features are features of one of shape, configuration, ornament, or pattern, or are a combination of any of these features. Drawings of the design are included. FIG. 1 is a top elevation view of an Illuminated Speaker Device in a first state of a sequence, illustrating the design; FIG. 2 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 3 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 4 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a first variant of the design; FIG. 5 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 6 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 7 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 8 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 9 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a second variant of the design; FIG. 10 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 11 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 12 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 13 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 14 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 15 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 16 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a third variant of the design; FIG. 17 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 18 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 19 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 20 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 21 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 22 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 23 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 24 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 25 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 26 is a top elevation view thereof in an eleventh, illuminated, state of the sequence; FIG. 27 is a top elevation view thereof in a twelfth state of the sequence; FIG. 28 is a top elevation view of an Illuminated Speaker Device in an illuminated state, illustrating a fourth variant of the design; FIG. 29 is a top elevation view of an Illuminated Speaker Device in an illuminated state, illustrating a fifth variant of the design; FIG. 30 is a top elevation view of an Illuminated Speaker Device in a first state of a sequence, illustrating a sixth variant of the design; FIG. 31 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 32 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 33 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 34 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 35 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a seventh variant of the design; FIG. 36 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 37 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 38 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 39 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 40 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating an eighth variant of the design; FIG. 41 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 42 is a top elevation view thereof in a third state of the sequence; FIG. 43 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a ninth variant of the design; FIG. 44 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 45 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 46 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 47 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a tenth variant of the design; FIG. 48 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 49 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 50 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 51 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 52 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 53 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 54 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 55 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 56 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 57 is a top elevation view thereof in an eleventh, illuminated, state of the sequence; FIG. 58 is a top elevation view thereof in a twelfth, illuminated, state of the sequence; FIG. 59 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating an eleventh variant of the design; FIG. 60 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 61 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 62 is a top elevation view thereof in a fourth state of the sequence; FIG. 63 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 64 is a top elevation view thereof in a sixth state of the sequence; FIG. 65 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 66 is a top elevation view of an Illuminated Speaker Device, illustrating a twelfth variant of the design; FIG. 67 is a top elevation view of an Illuminated Speaker Device in a first state of a sequence, illustrating a thirteenth variant of the design; FIG. 68 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 69 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 70 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a fourteenth variant of the design; FIG. 71 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 72 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 73 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 74 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 75 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a fifteenth variant of the design; FIG. 76 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 77 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 78 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 79 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 80 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 81 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 82 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a sixteenth variant of the design; FIG. 83 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 84 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 85 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 86 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 87 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 88 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 89 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 90 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 91 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 92 is a top elevation view thereof in an eleventh, illuminated, state of the sequence; FIG. 93 is a top elevation view thereof in a twelfth state of the sequence; FIG. 94 is a top elevation view of an Illuminated Speaker Device in an illuminated state, illustrating a seventeenth variant of the design; FIG. 95 is a top elevation view of an Illuminated Speaker Device in a first state of a sequence, illustrating an eighteenth variant of the design; FIG. 96 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 97 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 98 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 99 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 100 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a nineteenth variant of the design; FIG. 101 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 102 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 103 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 104 is a top elevation view thereof in a fifth state of the sequence; FIG. 105 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twentieth variant of the design; FIG. 106 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 107 is a top elevation view thereof in a third state of the sequence; FIG. 108 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-first variant of the design; FIG. 109 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 110 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 111 is a top elevation view thereof in a fourth state of the sequence; FIG. 112 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-second variant of the design; FIG. 113 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 114 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 115 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 116 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 117 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 118 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 119 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 120 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 121 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 122 is a top elevation view thereof in an eleventh, illuminated, state of the sequence; FIG. 123 is a top elevation view thereof in a twelfth, illuminated, state of the sequence; FIG. 124 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-third variant of the design; FIG. 125 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 126 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 127 is a top elevation view thereof in a fourth state of the sequence; FIG. 128 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 129 is a top elevation view thereof in a sixth state of the sequence; FIG. 130 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 131 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-fourth variant of the design; FIG. 132 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 133 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 134 is a top elevation view of the Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-fifth variant of the design; FIG. 135 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 136 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 137 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 138 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-sixth variant of the design; FIG. 139 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 140 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 141 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 142 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 143 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 144 is a top elevation view of an Illuminated Speaker Device in an illuminated state, illustrating a twenty-seventh variant of the design; FIG. 145 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-eighth variant of the design; FIG. 146 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 147 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 148 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 149 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 150 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 151 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 152 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 153 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 154 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 155 is a top elevation view thereof in an eleventh, illuminated, state of the sequence; FIG. 156 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a twenty-ninth variant of the design; FIG. 157 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 158 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 159 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 160 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirtieth variant of the design; FIG. 161 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 162 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 163 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 164 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-first variant of the design; FIG. 165 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 166 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-second variant of the design; FIG. 167 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 168 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 169 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 170 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 171 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-third variant of the design; FIG. 172 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 173 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 174 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 175 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 176 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 177 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 178 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 179 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 180 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 181 is a top elevation view thereof in an eleventh, illuminated, state of the sequence; FIG. 182 is a top elevation view thereof in a twelfth, illuminated, state of the sequence; FIG. 183 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-fourth variant of the design; FIG. 184 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 185 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 186 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 187 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 188 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-fifth variant of the design; FIG. 189 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 190 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-sixth variant of the design; FIG. 191 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 192 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 193 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 194 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 195 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-seventh variant of the design; FIG. 196 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 197 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 198 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 199 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 200 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 201 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 202 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-eighth variant of the design; FIG. 203 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 204 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 205 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 206 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 207 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 208 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 209 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 210 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 211 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 212 is a top elevation view thereof in an eleventh, illuminated, state the sequence; FIG. 213 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a thirty-ninth variant of the design; FIG. 214 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 215 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 216 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 217 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a fortieth variant of the design; FIG. 218 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 219 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 220 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 221 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a forty-first variant of the design; FIG. 222 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 223 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a forty-second variant of the design; FIG. 224 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 225 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 226 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a forty-third variant of the design; FIG. 227 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 228 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 229 is a top elevation view thereof in a fourth, illuminated, state of the sequence; FIG. 230 is a top elevation view thereof in a fifth, illuminated, state of the sequence; FIG. 231 is a top elevation view thereof in a sixth, illuminated, state of the sequence; FIG. 232 is a top elevation view thereof in a seventh, illuminated, state of the sequence; FIG. 233 is a top elevation view thereof in an eighth, illuminated, state of the sequence; FIG. 234 is a top elevation view thereof in a ninth, illuminated, state of the sequence; FIG. 235 is a top elevation view thereof in a tenth, illuminated, state of the sequence; FIG. 236 is a top elevation view thereof in an eleventh, illuminated, state of the sequence; FIG. 237 is a top elevation view thereof in a twelfth, illuminated, state of the sequence; FIG. 238 is a top elevation view of an Illuminated Speaker Device in a first, illuminated, state of a sequence, illustrating a forty-fourth variant of the design; FIG. 239 is a top elevation view thereof in a second, illuminated, state of the sequence; FIG. 240 is a top elevation view thereof in a third, illuminated, state of the sequence; FIG. 241 is a top elevation view thereof in a fourth, illuminated, state of the sequence; and FIG. 242 is a top elevation view thereof in a fifth, illuminated, state of the sequence. The broken line portions are included for illustration only and form no part of the design. The circular shaded elements indicate illumination. Here, relative intensity is indicated by lighter or darker shading, with darker shading indicating higher intensity corresponding to a brighter light. By way of example, in some figures there are up to three levels of illumination intensity indicated by the circular shaded elements.