Home Audio MB Quart Formula Series 4"

MB Quart - Formula Series 4" x 6" 2-Way Car Speakers with Polypropylene Cones (Pair) - Black

Price range: $39.95–59.99
Brand: MB Quart
Category: Audio
A pair of MB Quart headphones featuring 4" x 6" drivers, 55 Hz–20 kHz frequency response, and 4Ω impedance.
PQS: 100 (computed 2026-04-28 07:03)
GTIN-14: 00806576228349
MB Quart - Formula Series 4" x 6" 2-Way Car Speakers with Polypropylene Cones (Pair) - Black

Key specs

A human-friendly subset of populated specs
Driver
4" x 6"
Frequency response
55 hertz - 20 kilohertz
Impedance (ohms)
4
Wireless (BT/WiFi)
No

Offers

Retailer SKU Price Stock Offer Last seen
Best Buy 6507876 59.99 USD In stock View offer → 2026-04-28 02:44
Newegg 9SIA34AEM76562 39.95 USD In stock View offer → 2026-04-28 02:17

Recent price history (50)

Show price log (50 entries)
Retailer Price Stock Seen at
bestbuy 59.99 USD In stock 2026-04-28 02:44
newegg 39.95 USD In stock 2026-04-28 02:17
newegg 39.95 USD In stock 2026-04-27 02:16
bestbuy 59.99 USD In stock 2026-04-26 02:44
newegg 39.95 USD In stock 2026-04-26 02:16
bestbuy 59.99 USD In stock 2026-04-25 02:41
newegg 39.95 USD In stock 2026-04-25 02:17
bestbuy 59.99 USD In stock 2026-04-24 02:33
newegg 39.95 USD In stock 2026-04-24 02:23
bestbuy 59.99 USD In stock 2026-04-23 02:36
newegg 39.95 USD In stock 2026-04-23 02:13
bestbuy 59.99 USD In stock 2026-04-22 02:38
newegg 39.95 USD In stock 2026-04-22 02:14
bestbuy 59.99 USD In stock 2026-04-21 02:40
newegg 39.95 USD In stock 2026-04-21 02:11
bestbuy 59.99 USD In stock 2026-04-20 02:45
newegg 39.95 USD In stock 2026-04-20 02:20
bestbuy 59.99 USD In stock 2026-04-19 02:37
newegg 39.95 USD In stock 2026-04-19 02:24
bestbuy 59.99 USD In stock 2026-04-18 02:40
newegg 39.95 USD In stock 2026-04-18 02:23
bestbuy 59.99 USD In stock 2026-04-17 02:45
newegg 34.95 USD In stock 2026-04-17 02:24
newegg 34.95 USD In stock 2026-04-16 13:28
bestbuy 59.99 USD In stock 2026-04-16 02:41
newegg 34.95 USD In stock 2026-04-16 02:15
bestbuy 59.99 USD In stock 2026-04-15 02:42
newegg 34.95 USD In stock 2026-04-15 02:20
bestbuy 59.99 USD In stock 2026-04-14 02:34
newegg 34.95 USD In stock 2026-04-14 02:14
bestbuy 59.99 USD In stock 2026-04-13 02:36
newegg 34.95 USD In stock 2026-04-13 02:23
bestbuy 59.99 USD In stock 2026-04-12 02:44
newegg 34.95 USD In stock 2026-04-12 02:23
bestbuy 59.99 USD In stock 2026-04-11 02:42
newegg 34.95 USD In stock 2026-04-11 02:18
bestbuy 59.99 USD In stock 2026-04-10 02:39
newegg 34.95 USD In stock 2026-04-10 02:25
bestbuy 59.99 USD In stock 2026-04-09 02:43
newegg 34.95 USD In stock 2026-04-09 02:12
bestbuy 59.99 USD In stock 2026-04-08 02:39
newegg 34.95 USD In stock 2026-04-08 02:24
newegg 34.95 USD In stock 2026-04-07 02:17
newegg 34.95 USD In stock 2026-04-06 02:20
bestbuy 59.99 USD In stock 2026-04-05 02:42
newegg 34.95 USD In stock 2026-04-05 02:14
bestbuy 59.99 USD In stock 2026-04-04 02:41
newegg 34.95 USD In stock 2026-04-04 02:11
bestbuy 59.99 USD In stock 2026-04-03 02:38
newegg 34.95 USD In stock 2026-04-03 02:19

Full specs

Show full spec table
Driver4" x 6"
Frequency response55 hertz - 20 kilohertz
Impedance (ohms)4
Wireless (BT/WiFi)No
Reconciled at2026-03-06 10:56
Canonical JSON (expand)
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Debug data (expand)
Raw title MB Quart - Formula Series 4" x 6" 2-Way Car Speakers with Polypropylene Cones (Pair) - Black
Raw brandMB Quart
Raw categoryBest Buy > Car Electronics & GPS > Car Audio > Car Speakers
Canonical highlights (populated fields only)
core.title MB Quart - Formula Series 4" x 6" 2-Way Car Speakers with Polypropylene Cones (Pair) - Black
core.seo_title MB Quart FKB146
audio.driver 4" x 6"
audio.wireless No
audio.impedance_ohms 4
audio.speakers_count 4
audio.frequency_response 55 hertz - 20 kilohertz
brand MB Quart
model FKB146
gtin14 00806576228349
images[0] https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/6507/6507876_sd.jpg
category audio
physical.depth_in 10.25
physical.width_in 7.25
physical.height_in 3.0
physical.weight_kg 0.88
physical.dimensions_in 3 x 7.25 x 10.25 in
warranty.labor 1 Year
warranty.parts 1 Year
schema_version 1
BestBuy raw specs (pretty)
Expand BestBuy raw JSON
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      "feature": "Lightweight thermal-formed polypropylene cones\nDeliver impactful bass with minimal cone flex."
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Newegg raw specs
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