Seismic Audio - SA-PTR-4U - 4 Space Pro Audio DJ Road Rack Case - 4U Pro Tour Grade Case

If you're hauling gear regularly, you know that flimsy cases are a false economy. This SA-PTR-4U gives you solid protection for your essential rack gear without the bulk of an 8-space monster. The 3/8" plywood construction with steel reinforcement handles the punishment of weekly load-ins, and at 32 pounds empty, it won't throw your back out getting it to the stage.

The dual-door design is where this case earns its keep. Both front and rear doors come off completely, so you can access your power amp's rear panel connections during soundcheck without playing Tetris with your entire rack. Whether you're running a wireless receiver, effects processor, and small power amp for acoustic gigs, or need a dedicated case for your essential signal chain components, four spaces gives you room for the gear that matters without excess bulk.

What you're getting is a workhorse case that fits in most vehicles, survives the rigors of regular gigging, and provides proper protection for gear that costs more than the case itself. The twist latches and spring-loaded handles are built to take abuse, and the steel rails properly support your equipment during transport.

Bottom line: This is the right choice if you need reliable protection for a focused 4-space rack setup and want something built for regular use rather than occasional transport.

Technical Specifications

• Model: SA-PTR-4U
• Rack Spaces: 4
• Mounting Rail Width: Standard 19"
• Construction: 3/8" plywood with laminated exterior
• Exterior Color: Black with chrome trim
• Weight: 32.1 lbs
• Outer Dimensions (with doors): 9 3/8" H x 21" W x 26" D
• Rail to Back (rear door on): 20 1/2"
• Rail to Rear (door off): 18 1/2"
• Front Rail to Rear Rail: 17 1/2"
• Hardware: Heavy-duty twist latches, spring-loaded handles
• Doors: Front and rear removable
• Lock Type: Dual 4" steel link locks per door
• Reinforcement: 4 steel L brackets per side
• Rail Material: Steel front and rear
• Recommended For: Power amps, effects, processors, wireless systems

Frequently Asked Questions

What gear actually fits in 4 rack spaces?

You're looking at power amps up to about 1000-2000 watts, most wireless receivers, multi-effects units, compressors, and EQs. Each space is 1.75" tall, giving you 7" total. Think of it as the sweet spot for mobile DJ rigs or bands that need core processing without hauling an 8-space monster.

Do both doors come off completely during setup?

Yes, both front and rear doors remove entirely without tools. This is crucial when you need to access rear panel connections during soundcheck or when mounting deeper equipment that needs rear support. No more trying to hold a door open while plugging in XLRs.

How much abuse can this case actually take?

The 3/8" plywood with steel corner reinforcement handles typical gigging punishment. It's not flight-case grade, but for weekly club gigs, church installations, and mobile work, it'll protect your gear from drops, impacts, and the usual load-in chaos. Just don't expect it to survive airline baggage handlers.

Is 4 spaces enough for a complete mobile rig?

Depends on your needs. For acoustic acts or small venues, you can fit a wireless receiver, effects processor, and modest power amp. For larger setups or multiple amps, you'll want 6 or 8 spaces. Think of this as the case for your essential signal chain, not your entire rack.