#pd-rc { font-family: Arimo, Arial, “Helvetica Neue”, sans-serif; color: #1b2230; max-width: 1080px; margin: 0 auto; line-height: 1.6; font-size: 16px; } #pd-rc * { box-sizing: border-box; } #pd-rc img { max-width: 100%; height: auto; display: block; } #pd-rc figure img { width: 100%; } /* fill the figure sources are 815-915px */ #pd-rc .pd-hero { background: #f5f7fa; border-radius: 20px; padding: 32px; margin: 0 0 26px; } #pd-rc .pd-hero.pd-split { display: flex; gap: 32px; align-items: center; } #pd-rc .pd-hero.pd-split .pd-hero-txt { flex: 1; } #pd-rc .pd-hero.pd-split figure { flex: 0 0 50%; margin: 0; } #pd-rc .pd-hero.pd-center { text-align: center; } #pd-rc .pd-hero.pd-center figure { margin: 22px auto 0; max-width: 820px; } #pd-rc .pd-hero.pd-plain { background: none; border-radius: 0; padding: 18px 0 4px; text-align: center; border-bottom: 3px solid var(–pd-acc); margin-bottom: 30px; } #pd-rc .pd-hero.pd-plain figure { margin: 20px auto 16px; max-width: 720px; } #pd-rc .pd-eyebrow { display: inline-block; text-transform: uppercase; letter-spacing: .06em; font-size: 13px; font-weight: 700; color: var(–pd-acc); margin-bottom: 8px; } #pd-rc .pd-hero h1 { font-size: 34px; line-height: 1.15; margin: 0 0 12px; font-weight: 700; letter-spacing: -.01em; } #pd-rc .pd-hero p { margin: 0; font-size: 18px; color: #5a6472; } #pd-rc .pd-hero.pd-center p, #pd-rc .pd-hero.pd-plain p { max-width: 720px; margin: 0 auto; } #pd-rc .pd-hero img { border-radius: 16px; } #pd-rc .pd-lead { font-size: 18px; color: #2a3340; max-width: 820px; margin: 0 auto 30px; } #pd-rc .pd-lead.pd-center-txt { text-align: center; } #pd-rc .pd-spec-title, #pd-rc .pd-block h2 { font-size: 22px; font-weight: 700; margin: 0 0 14px; } #pd-rc .pd-specs-wrap { margin-top: 6px; } #pd-rc .pd-spec-group { font-size: 15px; font-weight: 700; letter-spacing: .02em; margin: 18px 0 10px; color: var(–pd-acc); text-transform: uppercase; } #pd-rc .pd-specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 0 0 12px; } #pd-rc .pd-chip { border: 1px solid #e7eaee; border-radius: 14px; padding: 16px; } #pd-rc .pd-chip strong { display: block; font-size: 18px; font-weight: 700; } #pd-rc .pd-chip span { display: block; font-size: 13px; color: #5a6472; margin-top: 3px; } #pd-rc .pd-row { display: flex; gap: 32px; align-items: center; margin: 0 0 38px; } #pd-rc .pd-row.pd-rev { flex-direction: row-reverse; } #pd-rc .pd-row figure { flex: 0 0 54%; margin: 0; } #pd-rc .pd-row img { border-radius: 16px; box-shadow: 0 10px 30px rgba(20,30,50,.10); } #pd-rc .pd-text { flex: 1; } #pd-rc .pd-text h2 { font-size: 24px; line-height: 1.25; margin: 0 0 10px; font-weight: 700; } #pd-rc .pd-text p, #pd-rc .pd-block p { margin: 0; color: #5a6472; } #pd-rc .pd-block { margin: 0 0 32px; max-width: 860px; } #pd-rc .pd-block.pd-ctr { text-align: center; margin-left: auto; margin-right: auto; max-width: 720px; } #pd-rc.pd-just .pd-text p, #pd-rc.pd-just .pd-block p, #pd-rc.pd-just .pd-lead { text-align: justify; } @media (max-width: 900px) { #pd-rc .pd-hero.pd-split figure { flex-basis: 46%; } #pd-rc .pd-row figure { flex-basis: 50%; } } @media (max-width: 760px) { #pd-rc .pd-hero.pd-split, #pd-rc .pd-row, #pd-rc .pd-row.pd-rev { flex-direction: column; align-items: stretch; } #pd-rc .pd-hero.pd-split figure, #pd-rc .pd-row figure { flex-basis: auto; } #pd-rc .pd-hero.pd-center figure, #pd-rc .pd-hero.pd-plain figure { max-width: 100%; } #pd-rc .pd-hero h1 { font-size: 27px; } #pd-rc .pd-specs { grid-template-columns: repeat(2, 1fr); } } Car subwoofer in a box

ALPINE SBG-1224BP car speaker, 30 cm subwoofer in a bandpass box, 250 W RM

Ready-to-install bass module with acrylic windows and blue lighting in the trunk.

ALPINE SBG-1224BP is a 30 cm car subwoofer factory-mounted in a sealed MDF bandpass enclosure. The wiring is pre-installed, and the connection to the amplifier is made through the terminals on the side. The impedance is 2 Ohms, and the rated power is 250 W.

Bandpass box for solid deep bass

The enclosure is bandpass type, so the speaker radiates through a tunnel that reinforces the lowest frequencies within a narrow range. The working range starts at 28 Hz, and the sensitivity of 90 dB delivers noticeable bass even with a mid-range amplifier.

Acrylic windows with blue lighting

The windows on the top and side walls give a view of the speaker, and the built-in blue lighting highlights the installation in the trunk at night.

Ready kit with no box fabrication

The Type-G speaker is factory-mounted and wired, and all you need to do is run a cable from the amplifier to the terminals on the side. The fully enclosed housing protects the diaphragm from luggage and items that move when braking.

Specifications

General

ALPINEBrand SBG-1224BPModel Passive subwoofer in a bandpass boxType 30 cm (12″)Speaker size Type-GSpeaker series

Power

250 WRated power (RMS) 800 WMaximum power

Sound

28-200 HzFrequency range 90 dBSensitivity

Materials

MDFBox material Blue, through acrylic windowsLighting

Dimensions

473 x 380 x 314/414 mmDimensions (W x H x D)

Connection

Side terminals, factory-wiredConnection

General

24 monthsWarranty See more