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Danley TH121-TK-M20-B Tapped Horn Subwoofer High-Output 21" | Black

Danley TH121-TK-M20-B Tapped Horn Subwoofer High-Output 21" | Black

SoundPro Item: 204334 | Part Number: TH121-TK-M20-B

Regular price $10,165.00
Regular price $10,700.00 Sale price $10,165.00
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MSRP: $10,700.00 | MAP: $10,165.00

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  • Tapped horn design for strong LF efficiency
  • 21" neodymium driver handles demanding output
  • Passive 4-ohm format simplifies system deployment
  • M10 rigging points support install workflows
  • Polyurea finish resists impact and wear
  • Interlocking skids aid secure cabinet stacking

The Danley TH121 is a passive high-output subwoofer built around Danley’s patented tapped horn design. By using both sides of the 21-inch neodymium driver within the folded horn path, the enclosure is engineered to deliver strong low-frequency efficiency with reduced cone excursion at elevated drive levels. For production companies, venues, and integrators that need substantial bass from a single enclosure, the TH121 is designed for serious reinforcement duty in both mobile and fixed systems.

This model operates as a single-channel 4-ohm sub and covers a low-frequency range suited to modern music playback, live event support, and large-format speech reinforcement systems that require substantial extension. The cabinet uses a durable Baltic birch construction with polyurea coating, while available touring, installation, and Extreme Weather versions allow the product to fit different deployment environments. Multiple M10 suspension points support flown or secured mounting where applicable, and interlocking skids help with stable stacking alongside compatible Danley models.

For system optimization, Danley specifies use with DNA amplifiers or processors to access DSP for tuning, protection, and integration. Connectivity is provided via dual Neutrik NL4 Speakon connectors, and the enclosure is offered in multiple finish options to better align with venue or project requirements. The TH121 is a practical choice when output, durability, and integration flexibility matter more than compact consumer-style design priorities.

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Specifications

General
Brand
Danley
MPN
TH121
Product Type
Subwoofer
Operating Mode
Passive single channel – 4 Ohm
Coverage Pattern
Omni
Performance
Operating Range
28 Hz – 96 Hz +/- 3 dB / 22 Hz – 100 Hz – 10 dB
Transducers
1 x 21″ Neodymium subwoofer
Power Handling
3,000 W Cont. / 6,000 W Program / 12,000 W Peak
Sensitivity
104 dB / Preliminary
Output
Continuous 138 dB / Program 141 dB / Peak 145 dB
Connections
Connections
2x Neutrik NL4 Speakon Pin 1+/- | Low Frequency
Physical
Dimensions
Width 28″ x Height 48″ x Depth 31″ / 711.2 x 1219.2 x 787.4 mm
Weight
225 lbs / 102 kg
Mounting / Suspension Points
M10 Rigging Points
Finish
Black polyurea coated enclosure with matte black grille / White polyurea coated enclosure with matte white grille / Grey UV resistant coated enclosure with matte grey grille
Enclosure Material
18mm Baltic Birch, polyurea coated / 18mm high-density polyurethane, polyurea coated – grey
Options
TH121-T (touring), TH121-I (installation), TH121-EW (Extreme Weather)

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