Down4Sound
DOWN4SOUND DBz 8" SUBWOOFER - 4 OHM DVC | 700W RMS
- SKU:
- DBz8D4
Description
The DOWN4SOUND DBz-8 D4 is the ultimate budget banger designed to deliver exceptional performance and value. With a true 700W RMS power rating, this subwoofer provides big, punchy bass without the big price tag. Featuring a dual 4-ohm voice coil configuration, the DBz-8 offers versatile wiring options and strong output in compact enclosures. The real carbon fiber dustcap adds a premium aesthetic while increasing structural rigidity and performance.
Every component is engineered for efficiency, durability, and long-term reliability, making the DBz-8 D4 an ideal upgrade for daily drivers, small-space installs, or budget-friendly high-output systems.
Key Features
- 700W RMS power handling
- Dual 4-ohm voice coil design
- 2.5-inch high-temperature voice coil
- 21 mm one-way Xmax for impressive linear travel
- Real carbon fiber dustcap for strength, rigidity, and premium appearance
- Advanced venting throughout the motor structure for improved cooling
- Heavy-duty construction optimized for compact high-output performance
Technical Specifications (T/S Parameters)
- Revc (DC Resistance): 6.400 ohm
- Resonance Frequency (Fs): 46.157 Hz
- Qms: 1.895
- Qes: 0.618
- Qts: 0.466
- Mms (Moving Mass): 202.138 g
- Cms (Compliance): 57.318 μm/N
- Rms (Mechanical Resistance): 0.757
- Vas: 3.290 L
- Sd: 210.105 cm²
- BL Product: 24.797 T·m
- Sensitivity (SPL): 79.2 dB
- Xmax: 21 mm (one-way, mechanical)
- Displacement: 0.07 cu ft
Engineering and Construction
- Compact, efficient motor engineered for strong output
- Rear gap ventilation for improved coil cooling and reduced thermal compression
- Reinforced suspension system for stable high-excursion performance
- Real carbon fiber dustcap enhances rigidity and prevents deformation
- Precision-wound 2.5" coil supports high power levels without heat fatigue
- Built to provide maximum performance at an affordable cost
Recommended Enclosures
Sealed Enclosure:
- 0.3 – 0.4 cu ft (net)
Ported Enclosure:
- 0.75 – 1.0 cu ft (net)
- Recommended Tuning: 32 Hz
- Recommended Port Area: 12 – 16 sq in
Physical Dimensions
- Cutout Diameter: 7.32 in (186 mm)
- Mounting Depth: 6.61 in (168 mm)
- Outside Diameter: 8.71 in (221 mm)
- Motor Diameter: 6.69 in (170 mm)
- Net Weight: 23.6 lb (10.7 kg)
- Gross Weight: 26.9 lb (12.2 kg)
Why You Should Buy the DBz-8 D4
- High-quality bass on a budget
- Compact 8" form factor with strong low-end output
- Dual 4-ohm coils allow flexible wiring options
- Carbon fiber dustcap adds strength and a premium aesthetic
- Perfect blend of affordability, power, and durability
Ideal Applications
- Daily-driven bass systems requiring big sound in tight spaces
- Builds tuned in the 28–35 Hz range, where the DBz-8 produces deep, rolling lows that come alive with real cabin gain
- Compact ported enclosures, under-seat installs, hatchbacks, and small SUV systems
- SQL-style daily setups emphasizing strong midbass punch with usable low-end authority
- Users wanting responsive, aggressive bass performance without needing a large enclosure
Warranty Information
Warranty Information
Your new Down4Sound product is covered by 1 limited warranty if purchased from Down4Sound or an authorized Down4Sound dealer. This warranty does not cover improper installation, accidental damage, misuse, abuse, improper wiring, operation of unit outside of listed specifications, or any product that has been modified or repaired by anyone other than Down4Sound. Your warranty covers defects in materials and/or workmanship ONLY and is not an insurance policy. The warranty only covers the original owner of the amplifier.
All warranty returns must be accompanied by the original sales invoice or receipt. You must contact us to request an RMA number prior to sending any returns via the RMA request form on our website. You are responsible for the cost of shipping your product back to us for warranty examination. If your product is covered under warranty, shipping back to you will be at no charge to you – if your product is replaced/repaired outside of warranty you must pay for return shipping and repair bill prior to the return of the product or if no defect is found you are required to pay for return shipping only.
At the sole discretion of Down4Sound your product will be either repaired or replaced when it is being covered under warranty. In the event of shipping damage due to improper packaging on products being returned to Down4Sound the customer is liable for the cost of all damages, necessary repairs, or replacement. Be sure to properly pack your return!
* Extended additional warranty purchased on amplifiers take effect from the date of purchase and must also be stated on original sales invoice or receipt.
Refund/Return Policy: https://www.down4soundshop.com/shipping-returns/
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Additional Information
Model: |
DBz |
Ohm: |
4 |
Subwoofer Size: |
8 |
Product Type: |
Subwoofer |
Subwoofer Type: |
DUAL VOICE COIL |
8 Reviews
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8 inch sub
They sound great but after 3 12,s it's not near the punch but they are taking a beating trying to get there
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8” subs
The quality is amazing, and they hit hard
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Great small sub
These things are some beefy little 8" and for the money run with some more expensive brand big 8"s. Got 2 of these Paired with a D4s dual ported under seat enclosure for my buddy's truck and we were surprised at the output. For someone wanting a good decent 8" with good output and excursion these are it, might be getting so.e 15s for myself based on how much I like these.
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Sounds great
I have one of these in a CT Sounds slot port box on an NVX BDA7501 monoblock with a true RMS power output of 836watts. It gets low and loud. I installed it in my daughter's Buick Regal for her early Christmas present. She loves it and I'm impressed with how loud it is.
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D4S 8s
Sounds great coming from a set of g5 and DC M48s. Sounds and hits just as good as 8s doubled the price. Been running them for 3 weeks to this day. I guess it's time to sale my DC 8s.
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D4S 8s
Sounds great coming from a set of g5 and DC M48s. Sounds and hits just as good as 8s doubled the price. Been running them for 3 weeks to this day. I guess it's time to sale my DC 8s.
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Bangers
Made the jump from 2 shallow 10’s to 2 8’s. After breaking them in for a few days, these guys are pounding the lows. I need more amp to push them harder.
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DBZ 8
What a great sub. Paired up with the jp23 v1.5 at 1 ohm. This sub has exceeded my expectations especially for the price.
