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Blaupunkt GTb 8A 8" 75-watt powered subwoofer

Item # 023GTB8A

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Item # 023GTB8A

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About the Blaupunkt GTb 8A

John Pollard

Get ready to rock with Blaupunkt's GTb 8A powered subwoofer. You'll feel the bass you've been missing as the 8" spun-paper woofer pumps out the low-end thump. Its built-in 75-watt RMS amplifier keeps you from having to match up a separate amplifier — you just wire this sub up to your system and you're good to go. At under 11" deep, this compact sub will fit in some pretty tight places.

Product highlights:

  • powered subwoofer with 8" woofer
  • built-in 75 watt RMS amplifier (150 watts maximum)
  • frequency response: 30-200 Hz
  • dimensions: 10-1/2"W x 10-3/8"H x 11-5/8"D1 x 8-7/8"D2
  • warranty: none (Crutchfield's 60-day satisfaction guarantee applies)
  • MFR # AAV-GTB8A

What's in the box:

  • Subwoofer enclosure loaded with one 8" Woofer and built-in amplifier
  • 7.5 amp ATO fuses (installed)
  • Wiring harness (16.5' Power and speaker level input/ 3' Ground)
  • Instruction manual

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More details on the Blaupunkt GTb 8A

Pat M.

Features & specs

General
Enclosure Type Ported
Finish Material Carpet
Grille Metal Rods
Connector Type RCA/Molex
Quick-disconnect Plug ---
Bi-amp Inputs No
Woofer Size (inches) 8
Woofer Material Spun Paper
Passive Radiator ---
Width 10-1/2"
Height 10-3/8"
Depth 11-5/8"
Parts Warranty 60 Days
Labor Warranty 60 Days
Specifications
Frequency Response 30-200
Amplifier Power (RMS) 75 watts
Maximum Wattage 150 watts
Sensitivity N/A
Impedance N/A
Second Voice Coil Impedance N/A
Crossover Point 70-200

Product Research

Features

Overview: The GTb 8A amplified subwoofer features a 75-watt RMS (150-watts max) amp and an 8" subwoofer housed in a ported enclosure.

Auto Turn-on: The amplifier automatically turns on when it detects a signal on the line or speaker level inputs. After approximately 60 seconds with no input signal, the amplifier will turn off.

Controls:

  • Level: rotary dial to set the amplifier input gain; variable from 300mV to 8V for the line level inputs and 700mV to 19V for the speaker level inputs
  • Frequency: rotary dial to set the low-pass crossover frequency; variable from 70 Hz to 200 Hz
  • Phase: rotary dial to set the subwoofer phase; variable from 0° to 180°

Connections:

  • Power: the included harness has two 16.5' power and two 3' ground wires (all should be connected and the power wires should be fused at the battery)
  • Speaker Input: the included harness also has 16.5' left and right speaker level input wires
  • Line Input: stereo RCA jacks

Dimensions:

  • Width: 10-1/2" (including 5/8" protrusion of the control knobs)
  • Height: 10-3/8"
  • Depth (bottom): 10-5/8" (the grille, two steel rods, adds approximately 1" to the depth)
  • Depth (top): 8-7/8"

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