_top_: Oh-412-trad-v30-mb1

| Code Segment | Meaning | |--------------|---------| | | Product line: Overhead Handling | | 412 | Base model / carriage size (412 mm rail gauge) | | TRAD | Drive type: Traditional chain-driven (non-servo) | | V30 | Voltage / power class: 30V DC nominal | | MB1 | Mounting bracket type: Modular Bracket, variant 1 |

Based on the Mesa/Boogie Rectifier Traditional (also known as the "Stiletto" or "Straight") 4x12 cabinet. Unlike the oversized Standard/Rectifier cabinets, the Traditional model has dimensions closer to a classic Marshall 1960B, resulting in a tighter low-end and a more focused midrange. OH-412-TRAD-V30-MB1

| Test | Method | Acceptance Criterion | Result | |------|--------|----------------------|--------| | Dimensional Check | CMM (ISO 1101) | ±0.5 mm on all mounting interfaces | Pass | | Dielectric Strength | 500V AC for 1 min | Leakage < 5 mA | Pass | | Load Lifting | 150 kg @ 0.5 m/s, 10 cycles | No slip or stall | Pass | | Thermal Runaway | 2h continuous at 125% load | ΔT < 40°C above ambient | Pass | | Vibration (MB1) | 5–500 Hz sweep, 2g | No resonance < 300 Hz | Pass | | Code Segment | Meaning | |--------------|---------| |

In a mix, this cabinet would cut through densely layered guitars without excessive boominess. | Property | Value | |----------|-------| | Cabinet

| Property | Value | |----------|-------| | Cabinet Type | Closed-back, straight front (not slant) | | Impedance | 16 ohms mono (switchable to stereo 8 ohms per side?) – MB1 suggests fixed mono | | Power Handling | 240W RMS total (60W per V30) | | Frequency Response | 70Hz – 5kHz | | Sensitivity | ~100dB 1W/1m | | Construction | 15mm or 18mm birch plywood (MB1 may indicate thicker baffle) | | Dimensions | 760mm W x 760mm H x 360mm D (approx.) | | Weight | ~35-40kg (~77-88 lbs) | | Speaker Model | Celestion Vintage 30 (UK or Chinese production) | | Input Jacks | 1x mono jack plate (maybe two parallel jacks) |

: Unlike many "V-style" speakers that highlight upper mids, this driver emphasizes lower midrange frequencies , offering a warmer, fuller, and softer tonality. Key Features and Microphone Captures