Seismic Audio GH12M - 12 Inch Passive Wedge Monitor - Floor or Stage 350 Watts RMS - PA/DJ Stage, Studio, Live Sound Monitor

When you need to hear yourself on stage without breaking the bank, the GH12M delivers solid monitoring without the fuss. This passive wedge puts a 12-inch woofer and 1-inch horn tweeter in a bass-reflex cabinet that'll give you the full picture of your mix — from the punch of your kick drum up to the shimmer of your cymbals.

At 350 watts RMS, it'll cut through a typical rock band's stage volume while keeping vocals and lead instruments clear in that critical midrange where everything either sits right or fights for space. The 8-ohm impedance means you can chain multiple monitors off one amp channel, and the 95 dB sensitivity won't drain your amplifier. The frequency response goes down to 45 Hz, so you're getting real low end without needing to add a sub for most gigs.

This isn't boutique gear — it's workmanlike monitoring that shows up and does the job. The MDF cabinet with carpet covering and steel mesh grilles will handle the usual load-in abuse, and at 25 pounds, it's not going to kill you moving it around. The dual connection options (1/4-inch jacks and spring terminals) mean you can hook it up however your rig demands.

The GH12M works well in clubs, churches, and outdoor gigs up to about 200 people. It's not going to compete with high-end studio monitors for audiophile listening, but that's not what you need when you're trying to hear your vocals over a Marshall half-stack.

Bottom line: If you need reliable floor monitoring that won't cost as much as your guitar, the GH12M gives you full-range sound and enough volume to cut through without the premium price tag.

Technical Specifications

• Model: GH12M
• Type: Passive 2-way wedge monitor
• Power Rating: 350 Watts RMS / 700 Watts Peak
• Impedance: 8 Ohms
• Woofer: 12-inch high-output ribbed cone with 1.5-inch copper voice coil
• Tweeter: 1-inch horn tweeter, 75W wide dispersion
• Frequency Response: 45 Hz - 20 kHz
• Sensitivity: 95 dB
• Connectors: Dual 1/4-inch TS jacks, spring-loaded speaker terminals
• Cabinet: MDF with bass-reflex design
• Covering: Aviation-grade carpet
• Protection: Steel mesh grilles, ABS corner guards
• Handles: Heavy-duty ABS
• Dimensions (H×W×D): 20.5" × 15" × 13"
• Weight: 25 lbs
• What's Included: One GH12M wedge monitor
• Recommended For: Stage monitoring, DJ booth, small venue live sound

Frequently Asked Questions

What size amplifier do I need for the GH12M?

You'll want an amp that can deliver 350-500 watts RMS into 8 ohms. Most powered mixers with monitor sends will drive it fine, or you can use a dedicated monitor amp. Don't worry about matching the exact wattage — having some headroom actually helps with clarity and prevents clipping.

Can I chain multiple GH12Ms together?

Yes, the dual inputs make daisy-chaining easy. Two monitors will give your amp a 4-ohm load, four monitors will be 2 ohms. Just make sure your amplifier is stable at whatever impedance you end up with — check your amp's specs before you chain a bunch together.

How does this compare to active monitors in the same price range?

The GH12M requires a separate amp, which gives you flexibility to match power to your needs and upgrade components separately. Active monitors in this price range often compromise on either the amp or the drivers. The trade-off is you need rack space and more cables, but you get better long-term flexibility.

Will this work for bass guitar monitoring?

The 45 Hz low end covers most of what you need to hear for bass monitoring, especially the attack and note definition. If you're playing five-string or detuned bass and need to feel those deep fundamentals, you might want to add a sub, but for most bass players, this will give you enough low end to stay locked in.