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TDS
Speakers - Round Cone

QSI Speakers & Enclosures are now TDS Speakers & Enclosures

Why the name change?

The speakers and enclosures formely branded as QSI Solutions have been re-branded to TDS. The actual products are the exact same speakers and enclosures. So many of you may be asking why the name was changed.

It's simple really.

  1. These have always been distributed by American Hobby Distributors (AHD) and were originally given the brand name "TDS".
  2. When AHD purchased QSI Solutions, which makes sound decoders, it was natural for AHD to change their branding to "QSI".
  3. AHD later sold QSI Solutions, so the speakers were re-branded back to the original "TDS".

Until all previous inventory is depleted, some speakers and some enclosures may still be in the previous QSI Solutions packaging.

Model Description Discount Add Cart
0.50-inch (20mm)
SP050 5 in stock

SP050 Speaker

Size (Imperial): 0.50 inches (depth 0.125)
Size (Metric): 13 mm (depth 3)
Impedence: 8 Ohm
Power: 0.1 Watts
   
List: 9.95
Discount: 70%

Steve's: 2.98
ESP050 2 in stock

ESP050 Speaker Enclosure

Size (Imperial): 0.63 inches (0.3 half height / 0.5 full height)
Size (Metric): 16 mm (7.62 half height / 12.7 full height)
   
List: 8.95
Discount: 70%

Steve's: 2.68
0.63-inch (16mm)
SP062 5 in stock

SP062 Speaker

Size (Imperial): 0.62 inches (depth 0.14)
Size (Metric): 16 mm (depth 3.5)
Impedence: 8 Ohm
Power: 0.1 Watts
   
List: 12.95
Discount: 70%

Steve's: 3.88
ESP062 4 in stock

ESP062 Speaker Enclosure

Size (Imperial): 0.69 inch (0.29 half height / 0.5 full height)
Size (Metric): 18 mm (7.4 half height / 12.7 full height)
   
List: 8.95
Discount: 70%

Steve's: 2.68
0.75-inch (20mm)
SP075 5 in stock

SP075 Speaker

Size (Imperial): 0.75 inches (depth 0.13)
Size (Metric): 20 mm (depth 3.4)
Impedence: 8 Ohm
Power: 0.2 Watts
   
List: 9.95
Discount: 70%

Steve's: 2.98
ESP075 11 in stock

ESP075 Speaker Enclosure

Size (Imperial): 0.87 inch (0.23 half height / 0.44 full height)
Size (Metric): 22.1 mm (5.8 half height / 11.2 full height)
   
List: 8.95
Discount: 70%

Steve's: 2.68
1.02-inch (25.9mm)
SP100 4 in stock

SP100 Speaker

Size (Imperial): 1.02 inches (depth 0.185)
Size (Metric): 25.9 mm (depth 4.7)
Impedence: 8 Ohm
Power: 0.4 Watts
   
List: 9.95
Discount: 70%

Steve's: 2.98
ESP100 2 in stock

ESP100 Speaker Enclosure

Size (Imperial): 1.12 inch (0.3 half height / 0.5 full height)
Size (Metric): 28.5 mm (7.62 half height / 12.7 full height)
   
List: 8.95
Discount: 70%

Steve's: 2.68
1.10-inch (25.9mm)
SP110 1 in stock

SP110 Speaker

Size (Imperial): 1.10 inches (depth 0.2)
Size (Metric): 28 mm (depth 5.1)
Impedence: 8 Ohm
Power: 0.8 Watts
   
List: 9.95
Discount: 70%

Steve's: 2.98
ESP110 4 in stock

ESP110 Speaker Enclosure

Size (Imperial): 1.2 inch (0.31 half height / 0.51 full height)
Size (Metric): 30.5 mm (7.9 half height / 13 full height)
   
List: 8.95
Discount: 70%

Steve's: 2.68
1.17-inch (30.0mm)
SP120 6 in stock

SP120 Speaker

Size (Imperial): 1.17 inches (depth 0.22)
Size (Metric): 30 mm (depth 5.7)
Impedence: 8 Ohm
Power: 0.5 Watts
   
List: 9.95
Discount: 70%

Steve's: 2.98
ESP120 6 in stock

ESP120 Speaker Enclosure

Size (Imperial): 1.25 inch (0.47 half height / 0.79 full height)
Size (Metric): 31.75 mm (12 half height / 20 full height)
   
List: 8.95
Discount: 70%

Steve's: 2.68
1.26-inch (32mm)
SP125 8 in stock

SP125 Speaker

Size (Imperial): 1.26 inches (depth 0.18)
Size (Metric): 32 mm (depth 4.8)
Impedence: 8 Ohm
Power: 0.5 Watts
   
List: 9.95
Discount: 70%

Steve's: 2.98
ESP125 6 in stock

ESP125 Speaker Enclosure

Size (Imperial): 1.33 inch (0.39 half height / 0.61 full height)
Size (Metric): 33.9 mm (9.9 half height / 15.5 full height)
   
List: 11.95
Discount: 70%

Steve's: 3.58
2.75-inch (70mm)
SP275 3 in stock

SP275 Speaker

Size (Imperial): 2.75 inches (depth not available)
Size (Metric): 70 mm (depth not available)
Impedence: 8 Ohm
Power: not available
   
List: 9.95
Discount: 70%

Steve's: 2.98