The Dayton Audio Signature Series was designed to give DIY speaker designers access to the pinnacle of speaker technology at the value expected from Dayton Audio. Featuring an open aluminum cast frame, anodized aluminum cone and a polyimide former, these drivers can provide extended range with incredibly low distortion. After hours of painstaking engineering and testing with meticulous attention to detail, we at Dayton Audio deem this driver line worthy of the endorsement of even the most critical audiophile.
Key Features
Extensive Klippel LMP and LSI testing to optimize Bl symmetry and parameters
Indexed cone/surround junction for smooth transition/frequency response
Polyimide formers and aluminum shorting sleeve for improved inductance, damping, and frequency response
One piece concave black anodized aluminum cone
Vented former and elevated spider for improved air flow
Open aluminum cast frame for improved heat dissipation
Countersunk stainless steel magnet badging for long time aesthetics
Brand
Dayton Audio
Model
SIG120-4
Part Number
295-650
UPC
848791009051
Unit of Measure
Each
Weight
1.85
Product Specifications
Nominal Diameter
4"
Bolt Circle Diameter
4.33
Power Handling (RMS)
40 Watts
Power Handling (MAX)
80 Watts
Impedance
4Ω
Frequency Response
75-8500Hz
Sensitivity
89.7dB 2.83V/1m
Voice Coil Diameter
1"
Thiele-Small Parameters
Resonant Frequency (Fs)
74.6Hz
DC Resistance (Re)
3.7Ω
Voice Coil Inductance (Le)
0.22mH
Mechanical Q (Qms)
4.84
Electromagnetic Q (Qes)
0.47
Total Q (Qts)
0.43
Compliance Equivalent Volume (Vas)
0.109ft³
Mechanical Compliance of Suspension (Cms)
0.68mm/N
BL Product (BL)
5T·m
Diaphragm Mass Inc. Airload (Mms)
6.7g
Maximum Linear Excursion (Xmax)
4mm
Surface Area of Cone (Sd)
56.4cm²
Materials of Construction
Cone Material
Aluminum
Surround Material
Rubber
Voice Coil Former
Kapton® / Polyimide
Basket / Frame Material
Cast Aluminum
Mounting Information
Overall Outside Diameter
4.84"
Baffle Cutout Diameter
3.74"
Depth
2.33"
# Mounting Holes
6
Recommended Enclosure Volume
Sealed Volume
0.05ft³
Sealed F3
130Hz
Vented Volume
0.148ft³
Vented F3
68.9Hz