![]() ![]() In principle you can use some autotransformer taps for impedance conversion but it has its compromises.Ĥ:1 impedance step-up means 2:1 voltage down or 4:1 power down so you CAN connect speaker between common and 8W tap, then drive 32W tap from an amp which will "see" reflected 4 ohm, so far so good, BUT speaker can only "extract" specified 8W from that tap. Speaker is always across one or more windings ( in parallel), never in series with any of them.Īs of : getting 4 -8 ohm impedance instead of almost unusable 1 ohm. Justīe sure to connect both the speakers and the module directly to the amplifier, using separateĬhannels or connect speakers that do not need equalization in parallel with the Acoustimass module To be able to say this in advance one would need the circuit diagram (schematic) of the passive high pass in the bass unit from Freespace 3 Series II - go to Acoustimass Bassmodul Series II | Bose Professionalĭon't mention exact values for the satellite speaker impedance: You can use the FreeSpace®3 System Series II Acoustimass® module with other Bose® speakers, suchĪs the FreeSpace Model 16, Model 32, Model 32SE, Panaray® 302TM, or FreeSpace 6 speakers. close enough to typical speakers with impedance of 4 ohms. When such transformers available as a single part for reasonable costs, it would be an easy task to change it in all speaker devices to get 8 ohms and avoid to purchase amp with 100V outputs.Īn other possibility is a use of the pins "C" and "32" - this DC-resistance together with the driver is 1R7 and serial connection of two speaker devices is 3R4 - i. ![]() It can therefore be assumed that Bose uses this 0.8 ohm chassis in all versions of this model - even in the version with 8 ohms together with a suited auto transformer in this kind but for 8 ohms input. In the attachment the images of transformer with removed connection terminals and partially cut off leads of some winding so as of the steps of the assembly procedure.įirst image shows the schematic of the 100V transformer.Īccording this it is clearly an auto transformer, i. Opti-voice paging technology for crystal clear voice applications.BOSE Model 32 100 VRMS - Auto-Transformer Schematic here DSP with dynamic EQ, loudspeaker EQ, designed specifically for Bose speakers with signature Bose sound. 3 flexible operating modes: mixer mode, dual mono select mode and stereo select mode. 2 output channels with low impedance operations: 2 x 65W at 8 ohms, 2 x 120W at 4 ohms, or 2 x 100W at 70/100V 6 input channels (4 mic/line inputs, 1 page input and 1 direct input). Mix and match with surface mount or flush mount components for a variety of decors and setups.īose FreeSpace DXA2120 Digital Mixer Amplifier: Satellite and subwoofer system for high fidelity restaurant operations. Plenum rated with optional plenum cover for use in air handling spaces. Intelligent modular design with the option of 2 or 4 FreeSpace 3 satellites per bass module, and can work with other FreeSpace flush and surface satellite speakers for extra bass reinforcement. Loudspeakers with low frequency 5.25" (133 mm) woofer for deep distortion free bass down to 40 Hz. Spectacular sound in an unobtrusive and stylish package.īose FreeSpace 3 Series II Acoustimass Module: Easily configured locally with no computer required. The Bose FreeSpace DXA 2120 digital mixer/amplifier is feature packed with six channels in, and two channels out, for signal processing, mixing, paging, routing and two-channel amplification. While the Series II Acoustimass module features a powerful woofer that delivers silky smooth bass all the way down to 40 Hz without distortion. ![]() The Bose FreeSpace satellites give unobtrusive background music, great for small to medium-sized spaces. ![]() This pendant system is designed for optimised full room coverage, perfectly suited for open ceiling venues. The Bose Restaurant Sound System with FreeSpace 3 Pendant Mount Satellite System and DXA 2120 Mixer Amplifier is the perfect all in one sound solution for your restaurant or hotel lounge. ![]()
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