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Upgrading the Sirius SP-B1 Sportster Boombox speakers. Lipstick on a pig but it does sound better. : r/siriusxm
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SiriusXM Onyx EZR Satellite Radio with Boombox Bundle, Get 12 Months for $99 or Your First 3 Months Service Free w/Subscription – Enjoy SiriusXM in Your Car and Beyond with This Dock
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