B172A - Processor Black Lion Audio - Free user manual and instructions
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| Product Type | Analog Stereo Processor (Compressor/Limiter with EQ) |
| Form Factor | 1U Rackmount |
| Dimensions (W x H x D) | 19 x 1.75 x 8.5 inches (483 x 44 x 216 mm) |
| Weight | 5.5 lbs (2.5 kg) |
| Power Supply | Internal linear, 100-240V AC, 50/60Hz, 15W |
| Input Connectors | 2x XLR-F, 2x TRS 1/4" (balanced) |
| Output Connectors | 2x XLR-M, 2x TRS 1/4" (balanced) |
| Frequency Response | 20 Hz – 20 kHz (±0.5 dB) |
| Dynamic Range | 110 dB (A-weighted) |
| THD+N | <0.01% at 1 kHz, +4 dBu |
| Compression Ratio | Variable 1:1 to 20:1 |
| Attack Time | 0.1 ms – 50 ms |
| Release Time | 50 ms – 2 s |
| EQ Band | 3-band semi-parametric (Low, Mid, High) |
| Bypass | Hardware True Bypass on both channels |
| Metering | LED VU meters for gain reduction and output level |
| Construction | Steel chassis with aluminum front panel |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Included Accessories | Power cord, rackmount screws, user manual |
| Warranty | 2 years limited |
Frequently Asked Questions - B172A Black Lion Audio
How do I connect the B172A to my audio interface?
Use balanced XLR or TRS cables. Connect the outputs of your interface to the INPUT jacks on the rear panel, and the OUTPUT jacks to your interface's line inputs. Ensure both units are powered off during connection.
Can I use the B172A on stereo tracks?
Yes, the B172A is a stereo processor with two independent channels. For linked stereo operation, engage the STEREO LINK switch on the front panel.
What is the correct power-up sequence?
Turn on the B172A first, then your monitoring system. Power down in reverse order to avoid loud pops. Always use the supplied power cord.
How do I clean the front panel?
Use a soft, dry microfiber cloth. For stubborn spots, lightly dampen with water. Do not use abrasive cleaners or solvents. Avoid getting moisture into the vents or knobs.
The unit is not passing audio. What should I check?
First, verify that the BYPASS switch is not engaged. Check all cable connections and ensure the unit is powered on. Test with a known-good source. If still silent, try a different input cable.
What is the maximum input level?
The maximum input level before clipping is +22 dBu. Ensure your source does not exceed this to avoid distortion.
Can the B172A be used for mastering?
Yes, its low noise and distortion make it suitable for mastering. Use subtle compression settings and bypass EQ if not needed. Monitor levels carefully to preserve headroom.
How do I set the compression ratio for vocals?
Start with a ratio of 3:1 and adjust threshold so that gain reduction is 3-6 dB on peaks. For more aggressive control, increase ratio to 6:1 or higher.
Does the unit require regular maintenance?
Minimal maintenance is needed. Keep the unit free of dust and ensure adequate ventilation. Periodic inspection of cables and connectors is recommended. No internal adjustments are required.
Where can I find the serial number?
The serial number is located on the rear panel near the power inlet. It is also printed on the original packaging. Keep it for warranty registration.
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