MTC-200BB6-B vs MTC-81BB8 — Compare
JBL MTC-200BB6 Cylindrical Backcan For Control 227C/CT B-Stock vs JBL MTC-81BB8 Pre-install Deep Backcan For 8138
The MTC-200BB6 is a cylindrical backcan optimized for JBL Control 227C/CT speakers with 0.5 cubic feet of internal volume and MDF acoustic damping, while the MTC-81BB8 is a square deep backcan designed for JBL 8138 ceiling speakers with 0.26 cubic feet of volume and steel construction. Choose the MTC-200BB6 if you're installing Control 227 series speakers; choose the MTC-81BB8 if you're working with 8138 ceiling speakers.
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JBL MTC-200BB6 Cylindrical Backcan For Control 227C/CT B-Stock
JBL MTC-81BB8 Pre-install Deep Backcan For 8138
Specs side by side
| JBL MTC-200BB6 Cylindrical Backcan For Control 227C/CT B-Stock | JBL MTC-81BB8 Pre-install Deep Backcan For 8138 | |
|---|---|---|
| Price | $127.74 | $123.56 |
| Brand | JBL | JBL |
| Condition | Refurbished | New |
Why choose JBL MTC-200BB6 Cylindrical Backcan For Control 227C/CT B-Stock
- ✓ 0.5 cubic foot internal volume optimized for Control 227C/CT acoustic performance
- ✓ 12 mm MDF acoustic lining reduces cabinet resonance and improves speech clarity
- ✓ Cylindrical design minimizes vibration and diffraction in institutional installations
- ✓ Specifically engineered for medium-format Control series speakers
Why choose JBL MTC-81BB8 Pre-install Deep Backcan For 8138
- ✓ Compact 0.26 cubic foot volume fits standard ceiling cavity constraints
- ✓ Steel construction with E-coat finish resists corrosion in harsh environments
- ✓ Compatible with 286 mm mounting circle diameter (8138 series)
- ✓ Two perforated suspension tabs distribute load evenly for code-compliant mounting
Frequently asked questions
Which backcan works with which speaker?
The MTC-200BB6 is designed for JBL Control 227C and 227CT loudspeakers. The MTC-81BB8 is designed for JBL 8138 ceiling speakers. Using the wrong backcan with incompatible speakers will result in poor acoustic performance and improper mounting.
What's the difference in internal volume and why does it matter?
The MTC-200BB6 has 0.5 cubic feet (14.2 liters) of internal volume, while the MTC-81BB8 has 0.26 cubic feet (7.4 liters). The larger volume in the MTC-200BB6 provides better acoustic compliance for the Control 227 series, optimizing low-frequency response and clarity. The smaller volume in the MTC-81BB8 is matched to the 8138 speaker's requirements and fits in tighter ceiling cavities.
How do the construction materials differ?
The MTC-200BB6 uses 16 gauge metal with 12 mm MDF acoustic lining for vibration damping and speech clarity. The MTC-81BB8 uses 16 gauge steel with a black polymer E-coat finish for corrosion resistance. The MTC-200BB6's MDF lining is optimized for acoustic performance, while the MTC-81BB8's steel is optimized for durability and compact installation.
Which is better for tight ceiling spaces?
The MTC-81BB8 is significantly more compact at 11.75 x 11.75 x 7 inches with a square footprint, making it better suited for standard ceiling cavities. The MTC-200BB6 is larger and cylindrical, requiring more vertical depth at 8.1 inches and a 13.3-inch diameter.