Sound Pure's Take
The API 6-Slot Lunchbox (8b) is the industry-standard portable chassis that helped establish the 500 Series format as an essential staple in modern recording. Engineered with API’s rugged build quality and a rock-solid internal power supply, this 6-slot enclosure provides a clean, ultra-quiet, and reliable environment for housing 500 Series preamps, EQs, compressors, and utility modules.
Unlike early modular racks that suffered from shared power constraints, the current iteration features upgraded power delivery capable of providing full $215\text{ mA}$ per slot across both $+16\text{V}$ and $-16\text{V}$ rails, plus dedicated $+48\text{V}$ phantom power. With its heavy-duty steel construction, integrated carrying handle, and versatile rear panel connectivity (featuring both XLR and DB25 D-sub I/O), the 6-slot Lunchbox is as comfortable sitting on a control room desk as it is traveling between tracking sessions.
From API Audio
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Features
The API 500-6B lunchbox is a 6-slot rack designed to accept all API standard 5.25" X 1.5" modules. This quality allows an engineer the flexibility to bring along specialized EQ effects to any situation: 550A, 550b or 560. The lunchbox is self-powered with a rear panel selected AC voltage switch and a removable power cord. The input/output jacks are XLR. The lunchbox comes standard with a +48 volt internal phantom power supply, bussed to pin 15 for interface with the API 512c Mic Preamplifier. API makes several modules for the 500-6B, including the 512c Mic Preamplifier, the 525 Compressor, the 527 Compressor, the 550A 3-band EQ, the 550b 4-band EQ and the 560 Graphic EQ. Combinations of these modules make perfect stereo recording packages (two 512cs and two 550bs) or vocalist's box (one 512c, two EQs and one 527). Other uses for the versatile lunchbox include:
NOTE: The older 560A equalizer may use pin 15 for a "direct output" and must be disabled on the 560A circuit board edge connector by cutting a trace. This will eliminate 48 volts from damaging the 560A series equalizers. |
| Specifications | |
|---|---|
| Power Consumption, Quiescent: | .66 Watts |
| Size: | 15.5" X 5.5" X 7.5" Deep |
| Size (Boxed for Shipping): | 20.25" X 9.75" X 12" |
| Actual Weight: | 10.22 lbs. |
| Shipping Weight: | 12.65 lbs. |
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