Boston Acoustics

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High performance, low-profile car two-way car component system


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Boston Acoustics SPG555.

  • 6½" (165mm) copolymer cone woofer
  • ¾" Type-S2 Kortec dome tweeter
  • Separable and dockable crossovers
  • Flush/Angle- and surface-mount tweeter mounting kit


Mounting Depth
2-1/2" (61mm)
Nominal Size
6½-inch (160/165mm)
Sensitivity [1 watt (2.83v) at 1m]
Frequency Response (±3dB in car)
Power Handling
4 ohm

Customer Reviews

Reviewer: Tom Glidden

These are great sounding speakers! You have good fidelity at low volume and they really crank. They crapped out two weeks after my extended warranty! They unbonded from the frame. Now I don't have any front speakers, I am depressed!

Reviewer: Jake

these are definatley a great pair of speakers. Ive go them amped and they sound great even turned way up. there is very minimal distortion in the speakers as long as the bass isnt turned to high up on them. but thats what subs are for anyway. And no problem hearing vocals even with 2 10's bangin in the back of my hatchback

Reviewer: Jim

I have these in a 2011 Chevy Silverado Crew Cab powered by the GTA 704 amp. They sound great with no distortion, as long as the bass is not turned up high. These are not for those who want vibrating bass but are a good speaker set power by an amp. As I said, there is no distortion even when turned up.

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