Side view photo of the HDS3 next to the HDS3.1 for comparison.

HDS3.1 vs. HDS3

To show you what’s different about the HDS3.1 from the previous version of the series, we ran a test and crunched the numbers. Read on to see how the two compare in terms of output, impedance, and power handling.

HDS3.1 Test Setup

For our comparison, we ran the woofers in a 5 cubic foot box with a 30 Hz tuning on a  Q1-2200 amplifier (2200W @ 1 Ohm).

Results

The HDS3.1’s 160 oz motor Gauss’s out 1000(G) or 1 Tesla (T) more than the previous version’s 145 oz motor. This results in better power handling and efficiency.

The stamped frame requires an average of 5.9% less power than the cast frame when operating below 40 Hz. Even with less power, the output was .13 dB higher than the cast frame. Compared to the stamped frame, the cast frame tends to be louder when operating above 40 Hz. However, even using an average of 1.7% more power above 40 Hz, it was .02 dB quieter than the stamped frame.

Photo showing calipers measuring the HDS3 motor at 6.3 inches.
The HDS3 motor measure 6.3 inches in diameter.
Photo showing calipers measuring the HDS3.1 motor at 6.89 inches.
The HDS3.1 motor measures slightly larger at 6.89 inches in diameter.
Image of a table showing decibels, amperage, voltage, impedance, and wattage at different frequencies for cast frame versus stamped frame.
A side-by-side comparison of the main performance metrics for both the cast and steel frames.
Output analysis graph of the cast aluminum frame compared to the stamped steel frame.
Wattage analysis graph of the HDS3 cast aluminum frame compared to the HDS3.1 stamped steel frame.
Impedance analysis graph of the HDS3 cast aluminum frame compared to the HDS3.1 stamped steel frame.

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between 9 a.m. - 5 p.m. (CST), Monday through Friday.

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