B&C MC122AN
12″ coaxial floor monitor from B&C Speakers for the 12HCX76 – passive crossover with lamp protection in the high-frequency section, from the Suggested Designs.
Primary source checked; some values are missing from the source or still open.
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Specifications
Link to section “Specifications”Every value with its provenance. If a value is missing from the source, it reads “not available”.
- Drivers
- 1 × B&C Speakers 12HCX76 Manufacturer
- Enclosure type
- Enclosure type not specified
- Low-frequency extension
- not available
- Sensitivity
- not available
- Max. SPL
- not available
- Power handling
- not available
- Impedance
- not available
- Dimensions (H × W × D)
- not available
- Volume
- not available
- Tuning frequency
- not available
- Weight
- not available
- Recommended high-pass
- not available
The drawings are dimensioned without units. We do not take any dimensions from them.
Description
Link to section “Description”In brief
A wedge monitor with a 12-inch coaxial driver and passive crossover. According to the schematic, incandescent lamps protect the tweeter.
The MC122AN is a floor monitor from the “Suggested designs” of B&C Speakers for the 12-inch coaxial driver 12HCX76. The file metadata calls it “CX12 Floor Monitor”.
The passive crossover is shown in the document as a schematic. A special feature: according to the schematic, automotive light bulbs (type 1195, 12 V / 36 W) are used in the high-frequency branch. Such a bulb limits the current at high power because its resistance rises as it heats up. The component values are in the original document.
The older B&C plans consist of a cover sheet and drawings; there is hardly any running text. The file is hosted on the former B&C domain, whose certificate has expired. We therefore link to the current “Suggested designs” overview page.
Drivers
Link to section “Drivers”- Original driver
Enclosure
Link to section “Enclosure”- Enclosure type
- Enclosure type not specified
- Shape
- Wedge (monitor)
- Ports
- not stated
- Material
-
- Birch plywood, 15 mm – specified
Build plan
Link to section “Build plan”We link to the original plan and do not host other people’s drawings.
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Open original document
MC122AN – über „Suggested designs“ bei B&C
Official source · 8 pages · version single PDF (older B&C-Domain) · accessed on 13 September 2026
Published by the manufacturer
Checksum (SHA-256)
6dee17592b9bce4742658003c960355ffc0de0fcc9a5fa5b93f5a2b2c47f3889
Plan access: Free
Crossover & controller
Link to section “Crossover & controller”- Crossover
- Passive crossover; according to the schematic, automotive incandescent lamps type 1195 (12 V / 36 W) as protection in the high-frequency section. Crossover frequency not stated.
- Recommended high-pass
- not stated
Pros and cons
Link to section “Pros and cons”Pros
- Crossover schematic with component values
- Simple tweeter protection using incandescent lamps
Cons
- Enclosure type not stated
- Drawings without units
- File only available via the older B&C domain
Sources
Link to section “Sources”-
Tier A · primary source
B&C Speakers · 9 November 2009 (Date from file metadata) · accessed on 13 September 2026
File on the older B&C domain (old.bcspeakers.com/media/W1siZiIsIjIwMTkvMDUvMDkv…), whose TLS certificate had expired as of 2026-09-13. The current overview page is therefore linked instead.
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Tier A · primary source
B&C Speakers – Suggested designs
B&C Speakers · accessed on 13 September 2026
Current overview page; the downloads open via menus. Older plans are available as individual PDFs on old.bcspeakers.com.
Usage rights of the plan: Published by the manufacturer. Added on 13 September 2026, last updated on 13 September 2026.