Hybrid Audio Technologies Unity Series - Manual (Page 6)

U51-2
System
U61-2
System
U5
Midbass
U6
Midbass
Overall Diameter Φ150 mm Φ165 mm
Mounting Depth 68 mm 68.8 mm
Bolt Circle Diameter Φ139 mm Φ156 mm
Mounting Hole Φ 123 mm Φ140 mm
Recommended Minimum Highpass
Crossover Frequency (fourth order)
65 Hz 60 Hz
Continuous Power Handling
(Pnom Rated Power Input • No crossover)
100 watts 100 watts (25 watts) (40 watts)
Peak Power Handling
(Pmax Rated Power Input • No Crossover)
230 watts 230 watts (50 watts) (80 watts)
Recommended Power Range 20-150 watts 20-150 watts
Frequency Response (+/- 3dB) 55 Hz - 22 kHz 50 Hz - 22 kHz 60 Hz - 8 kHz 55 Hz - 6.5 kHz
Efficiency 2.83V/1 meter 91.8 dB 93.2 dB
Mms 9.48 g 10.5 g
Cms 416 μM/N 403 μM/N
BL (T*m) 5.5 5.5
Voice Coil Diameter 25.5 mm 25.5 mm
Nominal Impedance 4 Ω 4 Ω
DC Resistance 3.4 Ω 3.4 Ω
Fs (Free Air) 80 Hz 75 Hz
Qms 3.227 4.506
Qes 0.553 0.679
Qts 0.472 0.59
Xmax (Two Way) 10mm 12mm
Vas 5.2 L 8.1 L
Sd 9.331 mm 2 11.882 mm 2
Unity
Component
Systems
Specifications &
Parameters
† Typically, in-car response including vehicular “cabin gain”, or the gain expected
with midbass installed in the vehicle, will result in an extended midbass and
upper subbass response. This is a result of these frequencies being below the
lowest resonance in the vehicle (typically around 50-125 Hz in most vehicles,
described in more detail on page 23). In more practical terms, install the Unity
midbass into your vehicle and you will see a dramatic improvement in midbass
and upper subbass output, much more so than just simply listening to the Unity
in a large room, or worse yet, “free air” (we don’t recommend even trying the
Unity speakers in “free air” without some form of enclosure or infinite baffle for
the midbass).
Thiele/Small Parameter Discussion for Unity Midbass
Speakers
The mechanical and electrical parameters of the Unity midbass speakers
are amenable to a variety of different installations and speaker locations.
The high Qms (Q factor of mechanical system) and Qts (Q factor of total
system), coupled with the driver’s Fs (resonance frequency) allow it to be
used in an “infinite baffle” configuration. In more practical terms, install the
Unity midbass such that the front and back waves don’t “meet” (as detailed
in Section I – Getting Started - Basic System Installation), including in a
door or kick panel, or in the case of a motorcycle, in the fairing (using only
the airspace behind the speaker as a pseudo enclosure), with no need for
a real enclosure or “box.” The design goes hand in hand with fool-proof,
high-end sound quality with minimal work. For more advanced users,
please reference the Thiele/Small Parameters for the Unity-series midbass
drivers.
© Hybrid Audio Technologies • Cumming, GA • 770.888.8200 © Hybrid Audio Technologies • Cumming, GA • 770.888.8200 10 11