Thiel SmartSub SS2 Technical Information

Thiel smartsub ss2: reference guide

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Technical Information

THIEL

SmartSub

Subwoofers

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Summary of Contents for Thiel SmartSub SS2

Page 1 Technical Information THIEL ® SmartSub Subwoofers...
Page 2 Also, the effects of nearby boundaries are predictable and therefore can be corrected without measurements. Such a built-in system of boundary compensation is an important aspect of the THIEL SmartSub system.
Page 3 SMARTSUB The most noteworthy features and benefits of the THIEL SmartSubs can be listed in four categories. These topics are the subject of this paper. • The ability to achieve a near-perfect, seamless transition with any main speakers when used to reproduce the bass range of channels other than LFE, in video or music systems.
Page 4 DISTORTION The SmartSub drivers incorporate several unusual design features, utilized in all THIEL woofers, that greatly reduce distortion compared with conventional designs. Here is a brief explanation of three of these. The purpose of the driver’s motor system is to apply a force to the diaphragm that is directly proportional to the voltage supplied by the amplifier.
Page 5 This problem has been practically eliminated in all THIEL drivers. The short coil design results in the entire coil surrounding the pole in all positions and therefore the coil’s inductance does not change with the diaphragm position.
Page 6 4.5 dB. The situation is actually more complicated because resistance is only one of three components of driver impedance (although the largest at most subwoofer frequencies), the others being motional and inductive impedance. The following graph shows the total impedance of the drivers in the enclosure and also the resistive, motional and inductive components that combine to produce it.
Page 7 Wall and Corner Placement Problems It is well known that placing any speaker, including a subwoofer, near a wall will cause both an increase in bass level and unevenness in the response due to reflection from the wall. The effects of corner placement are more complex than single-wall placement since there are then two sets of low frequency level and reflection effects.
Page 8 2 dB weak (Fig. 1). Frequency Fig. 1 Subwoofer extending to 35 Hz and crossing-over at 80 Hz with a sealed, 80 Hz main speaker. Standard settings. Increasing the signal level to the sub solves this problem, but the system response still suffers from excessive output in the 100 - 200 Hz region.
Page 9 (Fig. 7). Frequency Fig. 6 Subwoofer augmenting to 30 Hz a 50 Hz a sealed speaker. No phase adjustment. Frequency Fig. 7 Subwoofer (attempted) extending to 30 Hz augmenting a 50 Hz sealed main speaker.
Page 10 Rather than telling the subwoofer how to perform by using controls for crossover frequency, level and phase, the THIEL subwoofer crossover unit has settings for the characteristics of the main speakers you are matching, the configuration of your system and the performance you desire.
Page 11 THIEL is pleased and excited to offer these new technologies to solve the common subwoofer problems of integration and room placement. Please contact us if you have additional questions. SmartSub Integrator...
Page 12 THIEL 1026 Nandino Boulevard • Lexington, Kentucky 40511 USA Tel: 859-254-9427 • Fax: 859-254-0075 • mail@thielaudio.com • www.thielaudio.com 7-04...

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