Dayton Audio ND105-4 4" Aluminum Midbass Driver 4Ω

The Dayton Audio ND105-4 is a compact 4" midbass driver with an aluminum cone and Neo-Balanced motor that delivers extended-range, high-excursion performance for precise midrange and punchy low-mid output.

Engineered for tight, dynamic midrange reproduction, the ND105-4 packs advanced motor and suspension design into a small footprint. Its lightweight aluminum diaphragm, rubber surround, and underhung voice coil work together to produce clear harmonics, low distortion, and remarkable excursion for a driver this size. Whether you’re building point-source speakers, small studio monitors, line arrays, or multi-driver systems, this 4-ohm unit offers versatile integration and reliable power handling.

How does the ND105-4 improve midrange clarity?

The rigid aluminum cone resists breakup and the Neo-Balanced motor maintains linear control across extended movement, resulting in cleaner mids and reduced coloration. The polyimide former and four-layer voice coil help stabilize the diaphragm under varying power levels.

• Rigid, lightweight aluminum cone for minimal distortion
• Neo-Balanced magnet system for consistent linear force
• 1" 4-layer underhung voice coil for controlled coil motion
• Rubber edge surround provides damping and smooth roll-off

What frequency range and excursion can I expect?

This driver covers a wide band from deep midbass up into the lower treble, making it useful for systems that need a single driver to handle midbass and midrange. It supports significant cone travel for transient impact and dynamic range without losing control.

• Usable response approximately 60 Hz to 10 kHz
• Long-excursion design with 4 mm Xmax and 20 mm peak excursion
• Works well crossed to tweeters for coherent mid/high balance

How much power and what impedance does it accept?

The ND105-4 is rated for moderate continuous power while offering a 4-ohm nominal impedance to suit compact amplifiers or multiple-driver arrays. Its thermal and mechanical design handles bursts and sustained program material within the RMS rating.

• 30 watts RMS power handling for steady operation
• 4 ohm nominal impedance for efficient transfer from many amps
• Thermally stable materials like polyimide former improve reliability

How should I use the ND105-4 in speaker designs?

This driver adapts well to single-point speaker builds, multi-driver midranges, or compact line arrays. Its extended high-frequency response reduces crossover complexity when paired with common dome tweeters, and its excursion capability lends itself to applications that need strong transient and bass extension from a small driver.

• Ideal for small monitors, bookshelf speakers, and line arrays
• Combine multiple units for higher output and coverage control
• Integrates cleanly with dome tweeters around typical 2–3 kHz crossovers

Who is this for? Designers and hobbyists who need a compact driver with high-excursion capability, accurate midrange, and dependable motor control will find the Dayton Audio ND105-4 valuable. It’s tailored to small speaker projects, studio nearfields, compact PA elements, and builders seeking a nimble, low-distortion 4" midbass solution with the flexibility to perform in both single-point and multi-driver configurations.