🎶 READY TO SAVE? SHOP OUR ONLINE SPRING CLEANING DEALS!
Mackie Thump18Sv4 18-Inch Professional Powered Subwoofer
Couldn't load pickup availability
About Inventory Status
About Inventory Status
Questions? Call or text us at 301-946-8808.
♫ In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.
📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.
❓ Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.
❔ Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.
█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.
About Item Conditions
About Item Conditions
Questions? Call or text us at 301-946-8808.
New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.
Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.
Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.
Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.
Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.
B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.
Description
Description
Leave an Impression with the Mackie Thump18Sv4 18-Inch Professional Powered Subwoofer
Mackie ThumpSv4 is a professional powered subwoofer that adds that extra “oomph” to your PA system, shaking the floorboards with massive bass that gets people on their feet.
- ThumpSv4 combines their 1400W Class-D active subwoofer amplifier with a 18-inch high-performance woofer
- Selectable crossover modes make these subwoofers the perfect match for Thumpv4 loudspeakers or any PA speakers
- Variable crossover mode allows manual crossover adjustment
- Built-Like-A-Tank durability for gigging DJs and professionals
- Built-in handles for portability
- Custom Mackie slip cover available separately
- Stereo XLR inputs connect to DJ controller, mixer or other source
- Stereo XLR high-pass outputs connect to loudspeakers and set crossover mode
- Stereo XLR full-range outputs chain the full, unaltered signal to the next subwoofer
- Phase invert switch
- Defeatable front LED
- Stereo or mono summing for single or dual subwoofer deployment
- Variable level control (Muted to +6 dB)
- M20 thread for SPM400 speaker pole (sold separately)
Connect loudspeakers. Dial in the perfect low end. Feel the difference of a professional subwoofer that brings music alive with complex basslines and punchy kicks.
ThumpSv4 integrates perfectly with Thump loudspeakers, with voicing modes that automatically tailor the sound to match the size of your speakers. You can also set the crossover manually for more control over your sound.
Built-in carry handles make ThumpSv4 portable enough to add to your touring rig or gigging setup.
SPECIFICATIONS
General
- Series: ThumpSv4
- Product Type: Professional powered subwoofers
- Amplifier: 1400W Class-D active subwoofer amplifier
- Crossover Modes: Thump 12, Thump 15, Thump GO, Variable
- Alignment Delay: 1.4 ms on all modes
- Inputs: Stereo XLR
- High-Pass Outputs: Stereo XLR
- Full-Range Outputs: Stereo XLR
- Additional Features: Phase invert switch, defeatable front LED, stereo or mono summing, variable level control
- Physical Features: Built-in handles, rugged modern construction, M20 thread for speaker pole
- Warranty: 1 year
- Woofer Size: 18-inch high-performance woofer
- Maximum SPL: 132 dB
- Low Frequency Performance: 25 Hz
- Weight: 70.4 lb / 31.9 kg
- Dimensions (H x W x D): 21.3 x 24.8 x 23.8 inches / 541 x 630 x 605 mm
Manufacturer: Mackie
Model: THUMP18SV4
SKU: I924138-N-5-WHXB
UPC: 810128266482
We are Chuck Levin's Washington Music Center
Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.
Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.
Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
