The Jolt-8 is engineered for bass players who need reliable replacement woofers for combo amps or want to build custom bass cabinets. This 8-inch driver handles the demanding low-frequency requirements of electric bass guitar with punch and clarity.

Delivering 175 watts RMS power handling with 350-watt peak capacity, this woofer reproduces the full spectrum of bass guitar fundamentals without distortion. The 2-inch voice coil and 40-ounce magnet provide the magnetic strength needed for tight bass response and quick transient recovery.

The frequency response spans 75 Hz to 5 kHz, covering bass guitar's fundamental range and adding enough midrange presence for cutting through a band mix. At 91 dB sensitivity and 8-ohm impedance, it matches standard bass amp configurations and delivers efficient power transfer. The pressed steel chassis ensures durability under touring conditions, while the paper cone with cloth surround balances warmth and definition.

Perfect for repairing vintage Fender, Ampeg, or other combo amps, building custom 1x8 or 2x8 bass cabinets, or upgrading practice amp speakers. This driver works well in small to medium venues, rehearsal spaces, and home studios where controlled bass response matters more than maximum volume.

Installation requires basic speaker wire connections - positive and negative terminals accept standard 16-gauge wire. The speaker ships ready to mount in existing 8-inch cutouts.

Seismic Audio backs the Jolt-8 with a one-year warranty and ships nationwide, giving bass players professional-grade replacement drivers without the boutique price tag.

Technical Specifications

Frequently Asked Questions

What bass guitar amps is the Jolt-8 compatible with?

This 8-ohm, 8-inch driver works with most combo bass amps from Fender, Ampeg, Hartke, and other manufacturers that originally came with 8-inch speakers. Check your amp's impedance rating and power output - this speaker handles up to 175 watts RMS, making it suitable for practice amps up to medium-powered combos. Always match the impedance (8 ohms) and ensure your amp doesn't exceed the speaker's power rating.

Can I use this speaker for venues and live performances?

The Jolt-8 works best for small venues, rehearsal spaces, and recording studios rather than large live performances. With 175 watts RMS and 91 dB sensitivity, it provides adequate volume for coffee shops, small clubs, or practice with a drummer, but you'll want larger drivers or multiple speakers for outdoor gigs or rooms over 100 people. It's ideal for controlled environments where tone quality matters more than maximum volume.

What cables do I need to connect this speaker?

You'll need standard speaker wire - 16-gauge or thicker works well for most installations. The Jolt-8 has positive and negative terminals that accept bare wire, spade connectors, or banana plugs. Never use instrument cables or XLR cables for speaker connections. The speaker doesn't include wire, so purchase appropriate gauge speaker wire based on your cabinet's internal wiring requirements.

How does this compare to building a cabinet with multiple smaller drivers?

A single 8-inch driver like the Jolt-8 offers focused midrange punch that cuts through a mix, making it excellent for studio work and smaller venues. Multiple smaller drivers (like 4x6-inch configurations) can provide more surface area and power handling but may sound less focused. For bass guitar specifically, the 8-inch size hits the sweet spot between portability and low-frequency response, especially in sealed or small ported cabinets.

Can I replace a blown speaker in my combo amp with this driver?

Yes, if your combo amp originally had an 8-inch, 8-ohm speaker and your amplifier puts out 175 watts RMS or less. Remove the old speaker, note the polarity markings, and connect the Jolt-8 with the same wire positions. The pressed steel frame should mount using your existing screws in most standard 8-inch cutouts. If you're unsure about power ratings or impedance matching, consult your amp's manual or a qualified technician.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov