Iron v2 - Compressor SPL - Free user manual and instructions
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| Type | Variable Mu Compressor / Limiter (Stereo) |
| Dimensions (W x H x D) | 482 x 88 x 295 mm (19", 2U) |
| Weight | 5.5 kg |
| Power Supply | 230 V AC / 115 V AC, 50-60 Hz, 30 VA |
| Tubes | 2 x 6BC8 / 6BZ8 (dual triode) |
| Input | XLR balanced, impedance 20 kOhm |
| Output | XLR balanced, impedance 600 Ohm |
| Max Input Level | +22 dBu |
| Max Output Level | +22 dBu |
| Attack Time | 0.1 - 200 ms (variable) |
| Release Time | 0.1 - 4 s (variable) |
| Compression Ratio | 2:1 to 20:1 (variable) |
| Threshold | -20 to +20 dBu |
| Makeup Gain | 0 to +20 dB |
| Frequency Response | 10 Hz - 50 kHz (±1 dB) |
| Bypass | Hard relay bypass (true bypass) |
| Metering | VU meter for gain reduction and output level |
| Construction | Steel chassis, aluminum front panel |
| Operating Temperature | 0°C to 40°C |
| Maintenance | Periodic tube replacement; clean front panel with dry cloth |
| Safety | Class I equipment; disconnect power before servicing |
| Spare Parts | Tubes (6BC8/6BZ8) and fuses available from SPL |
Frequently Asked Questions - Iron v2 SPL
What type of tubes does the SPL Iron v2 use?
The SPL Iron v2 uses two 6BC8 (or 6BZ8) dual triode tubes, which are specially selected for audio compression.
How do I bypass the compressor?
Press the Bypass switch on the front panel. The relay engages true bypass, routing the input directly to the output without compression.
Can I link two Iron v2 units for stereo operation?
Yes, use a stereo link cable (TRS) connecting the Link jacks on the rear panels of both units. Set one as master and the other as slave.
What is the difference between the Iron v2 and the original Iron?
The Iron v2 features improved audio quality with a redesigned input transformer, lower noise floor, and a sidechain filter for advanced control.
How often should I replace the tubes?
Tube life depends on usage; typically 2-5 years. Replace when compression sounds distorted or gain reduction becomes inconsistent.
Does the Iron v2 have a sidechain input?
Yes, it has an external sidechain insert (TRS) for connecting an equalizer or other processors to shape the detection signal.
What is the maximum input level?
The maximum input level is +22 dBu, which is sufficient for most line-level signals.
Can I use the Iron v2 on stereo bus?
Absolutely. With stereo linking or using a single unit in dual-mono mode, it works great on stereo mixes.
How do I clean the device?
Disconnect power. Use a soft, dry cloth for the front panel. For ventilation slots, use compressed air. Avoid liquids.
What should I do if the power fuse blows?
Replace with same type (T630 mA / 250 V). If it blows again, check for internal faults and contact SPL support.
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USER MANUAL Iron v2 SPL
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Product information
Brand : SPL
Model : Iron v2
Category : Compressor