https://acousticresearchspeakers.net Tue, 08 Sep 2026 22:01:45 +0000 en-CA hourly 1 https://wordpress.org/?v=4.1.1 https://acousticresearchspeakers.net/2026/08/audio-unlimited-900mhz-wireless-rock-speakers-pair-ar-aw825-transmitter-tested/ https://acousticresearchspeakers.net/2026/08/audio-unlimited-900mhz-wireless-rock-speakers-pair-ar-aw825-transmitter-tested/#comments Mon, 31 Aug 2026 09:36:51 +0000 https://acousticresearchspeakers.net/2026/08/audio-unlimited-900mhz-wireless-rock-speakers-pair-ar-aw825-transmitter-tested/ read more »]]>

























Pre-owned and fully tested. Both Audio Unlimited 900MHz wireless rock speakers successfully connected to the included Acoustic Research AW825 transmitter and played audio properly at the same time. Volume and auto-tune controls were tested and working. The speakers and transmitter show normal cosmetic wear from previous use, including marks, scuffs and weathering consistent with outdoor equipment. Please review all photos carefully for exact condition and included items. Audio Unlimited 900MHz Wireless Rock Speaker Pair with Acoustic Research AW825 Wireless Audio Transmitter. Complete working wireless outdoor/indoor rock speaker setup. Both speakers were tested together with the included AR AW825 transmitter and are working properly. During testing, the transmitter was located indoors and the speakers continued receiving and playing audio outdoors at a distance of over approximately 80 feet, including transmission through a wall. This is only our actual test result and is not a guarantee of range in every installation, as wireless performance can vary depending on surroundings and interference. Pair of Audio Unlimited wireless rock speakers. 900MHz wireless RF system. Speaker power requirement: 15V DC, 1A each. Individual Power / Volume + / Volume – / Auto Tune controls. Acoustic Research AW825 wireless audio transmitter. AW825 power requirement: 12V DC, 200mA. 3 selectable transmitter channels. Stereo RCA audio input. Suitable for indoor/outdoor patio, garden, pool or landscape use. Rock-style enclosures blend naturally into outdoor surroundings. 2 Audio Unlimited 900MHz wireless rock speakers. 1 Acoustic Research AW825 900MHz wireless audio transmitter. 2 compatible 15V DC speaker power adapters. 1 compatible transmitter power adapter. Audio connection cable shown in photos. Both speakers were powered on and successfully paired/received audio from the AW825 transmitter simultaneously. Audio playback was clear during testing. These are pre-owned outdoor-style speakers and show normal signs of previous use, including surface marks, scuffs, discoloration/weathering and wear around the bottoms. No attempt has been made to disguise normal age-related cosmetic wear. Please inspect all photos closely, as they are part of the description and show the exact items you will receive. Only the items pictured are included.

]]> https://acousticresearchspeakers.net/2026/08/audio-unlimited-900mhz-wireless-rock-speakers-pair-ar-aw825-transmitter-tested/feed/ 0 https://acousticresearchspeakers.net/2026/08/audio-research-ls-2-review-a-modern-classic-in-the-making/ https://acousticresearchspeakers.net/2026/08/audio-research-ls-2-review-a-modern-classic-in-the-making/#comments Sat, 22 Aug 2026 09:09:31 +0000 https://acousticresearchspeakers.net/2026/08/audio-research-ls-2-review-a-modern-classic-in-the-making/ ]]> https://acousticresearchspeakers.net/2026/08/audio-research-ls-2-review-a-modern-classic-in-the-making/feed/ 0 https://acousticresearchspeakers.net/2026/02/audio-research-i-70-integrated-tube-amp-unboxing-u0026-sound-test/ https://acousticresearchspeakers.net/2026/02/audio-research-i-70-integrated-tube-amp-unboxing-u0026-sound-test/#comments Tue, 03 Feb 2026 06:42:34 +0000 https://acousticresearchspeakers.net/2026/02/audio-research-i-70-integrated-tube-amp-unboxing-u0026-sound-test/ ]]> https://acousticresearchspeakers.net/2026/02/audio-research-i-70-integrated-tube-amp-unboxing-u0026-sound-test/feed/ 0 https://acousticresearchspeakers.net/2025/06/audio-research-d250-u0026-jbl-4345/ https://acousticresearchspeakers.net/2025/06/audio-research-d250-u0026-jbl-4345/#comments Tue, 17 Jun 2025 23:39:33 +0000 https://acousticresearchspeakers.net/2025/06/audio-research-d250-u0026-jbl-4345/ ]]> https://acousticresearchspeakers.net/2025/06/audio-research-d250-u0026-jbl-4345/feed/ 0 https://acousticresearchspeakers.net/2024/07/audio-technica-atspb5-speaker-with-built-in-amplifier-scratches-and-stains/ https://acousticresearchspeakers.net/2024/07/audio-technica-atspb5-speaker-with-built-in-amplifier-scratches-and-stains/#comments Sun, 07 Jul 2024 03:00:07 +0000 https://acousticresearchspeakers.net/2024/07/audio-technica-atspb5-speaker-with-built-in-amplifier-scratches-and-stains/ read more »]]>










This is a used product. Please check the pictures. There are some scratches and stains on the used item. The condition is not bad. If you have any questions about the item. Please message me before purchasing! So please check your address before you pay. You cannot change your address after you place your order. Package: box, bubble wrap. We provide valid tracking numbers for all orders. If you have any questions or problems. Return information About us? Office to determine what these additional costs. We will respond to your questions or invoice.

]]> https://acousticresearchspeakers.net/2024/07/audio-technica-atspb5-speaker-with-built-in-amplifier-scratches-and-stains/feed/ 0 https://acousticresearchspeakers.net/2024/04/audio-source-separation-and-speech-enhancement-by-emmanuel-vincent-english-har/ https://acousticresearchspeakers.net/2024/04/audio-source-separation-and-speech-enhancement-by-emmanuel-vincent-english-har/#comments Sat, 27 Apr 2024 19:43:43 +0000 https://acousticresearchspeakers.net/2024/04/audio-source-separation-and-speech-enhancement-by-emmanuel-vincent-english-har/ read more »]]>


Audio Source Separation and Speech Enhancement. By Emmanuel Vincent, Tuomas Virtanen, Sharon Gannot. Learn the technology behind hearing aids, Siri, and Echo Audio source separation and speech enhancement aim to extract one or more source signals of interest from an audio recording involving several sound sources. These technologies are among the most studied in audio signal processing today and bear a critical role in the success of hearing aids, hands-free phones, voice command and other noise-robust audio analysis systems, and music post-production software. Research on this topic has followed three convergent paths, starting with sensor array processing, computational auditory scene analysis, and machine learning based approaches such as independent component analysis, respectively. This book is the first one to provide a comprehensive overview by presenting the common foundations and the differences between these techniques in a unified setting. Key features: Consolidated perspective on audio source separation and speech enhancement. Both historical perspective and latest advances in the field, e. Diverse disciplines: array processing, machine learning, and statistical signal processing. Covers the most important techniques for both single-channel and multichannel processing. This book provides both introductory and advanced material suitable for people with basic knowledge of signal processing and machine learning. Thanks to its comprehensiveness, it will help students select a promising research track, researchers leverage the acquired cross-domain knowledge to design improved techniques, and engineers and developers choose the right technology for their target application scenario. It will also be useful for practitioners from other fields e. Acoustics, multimedia, phonetics, and musicology willing to exploit audio source separation or speech enhancement as pre-processing tools for their own needs. EMMANUEL VINCENT is a Senior Research Scientist with Inria, Nancy, France. His research focuses on machine learning for speech and audio signal processing. He has been working on audio source separation for 15 years and co-authored over 180 publications in this field. His contributions include harmonic nonnegative matrix factorization, full-rank spatial covariance modeling, joint spatial/spectral estimation, deep learning based multichannel source separation, and objective performance metrics. He has given several keynotes, tutorials and summer school lectures, including at Interspeech 2012 and 2016, WASPAA 2015 and LVA/ICA 2015. He is a founding chair of the series of Signal Separation Evaluation Campaigns (SiSEC) and CHiME Speech Separation and Recognition Challenges and the chair of ISCA’s special interest group on Robust Speech Processing. TUOMAS VIRTANEN is a Professor with the Laboratory of Signal Processing, Tampere University of Technology, Finland, where he is leading the Audio Research Group. He is known for his pioneering work on single-channel sound source separation using nonnegative matrix factorization, and its application to noise-robust speech recognition, music content analysis, and sound event detection. His research interests also include content analysis and processing of audio signals in general. He has authored more than 170 publications and received four best paper awards. SHARON GANNOT is a Full Professor at the Faculty of Engineering, Bar-Ilan University, Israel, where he is heading the Speech and Signal Processing laboratory and the Signal Processing Track. His research interests include multi-microphone speech processing; distributed algorithms for noise reduction and speaker separation; array processing on manifold; dereverberation; single-microphone speech enhancement; and speaker localization and tracking. He received the Bar-Ilan University’s Outstanding Lecturer Award for 2010 and 2014 and the Bar-Ilan Rector Innovation in Research Award in 2018. He has co-authored over 200 publications and lectured tutorials at ICASSP 2012, EUSIPCO 2012, ICASSP 2013, and EUSIPCO 2013 and a keynote address at IWAENC 2012. He was a co-editor of the book Speech Processing in Modern Communication: Challenges and Perspectives (Springer, 2012). He currently serves as the Chair of the IEEE Audio and Acoustic Signal Processing (AASP) Technical Committee. Emmanuel Vincent, Tuomas Virtanen, Sharon Gannot. John Wiley & Sons Inc. Grand Eagle Retail is the ideal place for all your shopping needs! We are unable to deliver faster than stated. International deliveries will take 1-6 weeks. Please contact Customer Services and request “Return Authorisation” before you send your item back to us. We cannot take responsibility for items which are lost or damaged in transit. Home, Garden & Pets.

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