🌟 Skema Audio Processor Plus Subwoofer
Withthe Genelec 8361A you can hear the music as it is actually recorded. The dynamics are extreme, so is the sound pressure. The sound is truthful like few, from real point source. The room correction provides extra adjustment options. Massive appearance, looks bad in the living room. Coarse-grained sound when playing loud.Originally Published January 24, 2008 We are always preaching the more subs the better in a home theater system particularly two to four for a variety of reasons such as; smoother bass response across a wider listening area and increased dynamic range. So now that you've decided to purchase two or four subs, its time to show you how to connect them up properly to ensure you achieve the maximum benefits of a multi sub system. This article has been recently updated to incorporate two YouTube video discussions - 1. Why Multi-Sub, 2. How to Connect Multi-Sub. Why Have Multiple Subwoofers? Before reading this article, the reader is advised to check out our recently added YouTube video discussion on this subject matter to understand the benefits of using multiple subwoofers in a home theater environment. The Benefits of Multiple Subwoofers for Home Theater Step 1 Choosing your subwoofers We get a lot of questions about what types of subs to purchase for a multiple sub setup. When choosing the right subwoofers for your system, it’s a good idea to choose identical subs for optimal cancellation of room resonances, or ones of similar output level and design. Don’t for example mix and match a high quality 15” servo subwoofer with a cheap dual 6” bandpass sub that came with your “cubed” speaker system. Implementing an inferior subwoofer with a good one will limit your systems dynamic range and bandwidth to the weaker sub making your ears focus on the one that is breaking up and running out of steam. Mixing different subs will also reduce the success of canceling out room resonances since they will exhibit different amplitude and phase responses. Always select two well designed subwoofers preferably the same that are each in their own capable of filling your theater room with ample bass without bottoming out or running out of gas. If you can’t afford two subwoofers at the moment, buy one quality sub for now and add a similar capable one down the road when you’ve got the cash. IF you absolutely must use mismatched subs, it's important to try to chose models with a similar low frequency roll off slope. IE. Sealed subs are usually 12dB/oct while ported subs are usually 24 dB/oct below tuning. For more information, read Sealed vs Ported Subwoofers Which One is Right for You? Step 2 Identify the best locations for your subwoofers As a quick rule of thumb, if you have wall space at the front of your room, a good starting point is to place each sub ¼ the length of the front wall from each respective side wall as illustrated in Figure 1. In other words if your front wall is 20 ft wide, place each sub about 5 ft from each side wall close to the front wall. Figure 1 works extremely well especially if you only have one row of seating located a few feet off the back wall. Another option that works fairly well is to place each sub at opposite diagonal corners of the room as illustrated in Figure 2. I personally like placing both subs up against the front wall in a stereo configuration. I have had excellent success with this scenario, especially if the room has symmetrical side walls. Figure 1. Two Front Subs very good Figure 2. Two Diagonal Subs good Figure 3. Two Mid Side Wall Subs very good Figure 4. Two Mid Front/Back Wall Subs best Figure 5. four Corner Loaded Subs best The best configuration options include two subs in the mid-wall of opposing walls such as in Figures 3 & 4, or if you have four subs, have each corner loaded Figure 5. While these configurations work extremely well and usually better than what I proposed in figures 1 and 2, they are often impractical in most rooms. The configuration in Figure 4 is preferred over Figure 3 because it typically offers more SPL output. I’d love to sell you on the idea of four subwoofers but two is nearly as good and certainly more practical especially if you place them as suggested in Figures 3 and 4. Recent research per "Sound Reproduction" by Dr. Floyd Toole indicates that 4 subs each corner loaded provides less frequency response variation and more overall output than placing each sub at opposing midwall locations. This is really a great option to ensure maximum gain with reasonably practical positioning. EQ can be used to flatten out any peaks in the response. Since speakers are minimum phase devices, flattening out a peak will take the energy out of the room and benefit ALL seats. If you cannot place your subs in either of the above recommended configurations, do your best to use symmetry when pairing subwoofers like we show in the above illustration. Using our technique of crawling for bass is a good way to find the proper locations to place your subs. More advanced installers would benefit from using our subwoofer placement guidelines, to get more specific on choosing the appropriate locations for the subwoofers. How to Connect Multiple Subwoofers Before reading on, we recommend checking out our recently added YouTube Video discussion on how to connect multiple subwoofers to your AV receiver. How to Connect Multiple Subwoofers Step 3 Identify the “sub out” connections of your receiver/processor Do you only have one subwoofer output or multiple ones? For multiple subwoofer outputs on your processorIf you have multiple sub outs which is a rarity right now but becoming more and more common on newer receivers, then your job is a little easier. Simply connect an RCA cable from each sub out of your processor to each of your subwoofers. Next configure the layout in your processor if given the option. Some processors will allow you to set the sub out to mono, stereo L/R and front/back. Use the appropriate setting depending on your layout but also note that some processors that offer the “front/back” option only send the LFE info to one of the subs usually the back. Thus I usually recommend either the mono or stereo L/R option. For one subwoofer output on your processorIf your processor only has one sub out connection, you will need a male to female y-splitter see Processor Y-Splitter picture below such as the Impact Acoustics Sonicwave 1-male to 2-female splitter. Next connect each subwoofer to the splitter via your RCA type subwoofer cables. Choose quality interconnects that are well shielded and constructed. Again a great subwoofer cable choice would be the Sonicwave Series from Impact Acoustics. What about subwoofers with stereo L/R RCA inputs?Most subwoofers that have two individual Left and Right inputs have one labeled mono or LFE and it is usually the left one. Unless the manufacturer specifies otherwise, simply use the Left input. Alternatively you can use a 1-female to 2-male y-splitter see Subwoofer Y-Splitter image below and connect the female side to the subwoofer RCA cable and the male sides to the respective left and right inputs. Y-Splitter Types Processor Y-Splitter Subwoofer Y-Splitter Step 4 Calibrating the subwoofers The first thing you need to do is go into the bass management menu of your processor to properly configure your speakers and subwoofers. Speaker Size & Crossover SettingsIn most cases you will want to set all of your speakers to small and select an 80Hz crossover point. This is a good starting point. More advanced users can experiment with crossover points to improve the subwoofer to satellite speaker integration. If your receiver has a separate LFE setting, it's usually best to set it for 120Hz which will allow you to reproduce the actual full bandwidth of the LFE channel. Speaker DistanceUsing a tape measure, note the distances from each speaker with respect to the main listening seat and write it down. Enter this information for each appropriate speaker in your processor menu that relates to speaker distances. If your processor has multiple subwoofer outputs and independent level and distance controls, input the respective distances of each subwoofer. If your processor only has one subwoofer output or non independent trim settings for each, you will need to do a little math. Take the average distance between each subwoofer and the main listening position and enter that distance into your processor using the following formula Davg = Dsub1 + Dsub2 / 2. For example, if the left sub is 10 ft away and the right sub is 8ft away, the average distance is 9 ft 10+8/2. This is a staring point to try out. It would be best if you could pull some measurements with an RTA of at least 1/12th octave resolution at your primary listening position to determine the best delay setting for achieving optimal integration of your subwoofers with your front main channels. This should be repeated for the two or three most important seats in your theater room until you find the best setting that works reasonably well for all seats. Please note it is usually better to have independent delay control for each subwoofer. Some AV receivers/processors offer this as previously mentioned. Some powered subwoofers also offer a delay setting to compensate for receivers/processors that don't. Speaker LevelUsing an SPL meter set to c-weighted slow response, place the unit point up at the ceiling at the appropriate ear height and location for the main listening seat. Using the main front speakers as your reference channels, adjust the master volume until the SPL meter reads 75dB when the left front speaker is playing the test tone. Next calibrate each speaker to that 75dB reference. If your processor has independent multiple subwoofer outputs and trim controls, set the sub level to within a few dB of the other channels. If you don’t have independent level controls on your processor, disconnect one of the subs, and set the level using the sub's volume control. Next reconnect the sub and disconnect the calibrated sub and repeat this process. Once you have completed the level matching, connect up both subwoofers and lower the sub level control on the processor if the level has jumped up when both subwoofers are playing the test tone. Step 5 Listen and Evaluate The most important aspect is how it sounds after its all setup. Use bass intensive program material you are very familiar with and take a listen. Make sure the bass sounds uniform and well integrated with the rest of your speakers over the entire listening area. It’s a good idea to test two channel and multi channel music to ensure your system as a whole is integrated properly with your subwoofers. Movies may have a lot of bass, but it generally isn't sustained long enough to be considered good test material. Feel free to adjust sub level up or down to your taste and enjoy. What About Auto Set-Up? Most modern day receivers and processors have an auto setup option where you place a microphone at the main listening positions and have it do all of the set-up for you. The results tend to be a mixed bag where most of these systems will get channel levels and speaker distances correct, they will almost always identify speaker sizes and crossover points incorrectly. It is highly recommended that should you decide to use such a system to not follow the end results as a definitive guide but more as a starting point for you to go in and customize to better suit the needs of your particular installation. Specifically, we suggest verifying the speaker sizes and crossover points. Recommendations Following the guidelines set forth in this article will help you properly set up a multi-subwoofer home theater system. If done correctly, using two or more subs will yield significantly better and smoother bass response for all of the seats in your theater room. Getting the bass right can make a good home theater system sound stellar, which will greatly enhance the enjoyment and wow factor for yourself and your guests. The best way of achieving this is with multiple subs properly positioned and set up. Untukversi box Sub Spl audio 15" nanti akan saya bagikan juga di sini untuk itu terus kunjungi situs ARA AUDIO agar tidak ketinggalan skema dan informasi seputar sound system. Box speaker SPL Audio ini masih tergolong jenis Scoop hanya berbeda pada skat belakang, dan untuk versi custom ara audio saya panjangkan kebelakang seperti dynacord biar Dolby Prologic Surround Decoder Channel Audio Processor SSM2126A. Audio processing from stereo audio signal into surround mode channel using chipset SSM2126A from analog devices. i modified from pro logic I to be pro logic II Audio. Audio output channel as subwoofer, center, fron L, front R, rear L and rear R audio processor home theater surround prologic Electronicsservice manual exchange : schematics,datasheets,diagrams,repairs,schema,service manuals,eeprom bins,pcb as well as service mode entry, make to model and chassis correspondence and more. WESTSOUNDadalah produk audio dari negara TURKI yang produksinya telah beredar ke luar negeri. Mixer WESTSOUND 24422. SKEMA. Berikut ini adalah hasil pangkas dan edit dari skema aslinya: KLIK GAMBAR UNTUK MEMPERBESAR. Skema Tone Control pada WESTSOUND WX24422. Dari skema tone control ini nampak bahwa rangkaian terdiri dari 2 tingkat OPAMP. SistemElegan, Suara Bikin Nyaman. Car Audio Car Audio System 14/02/2022. Secara keseluruhan sistem audio yang terpasang membuat mobil ini kian terlihat elegan. Dibalik tampangnya yang berwibawa nyatanya ia juga punya sistem audio yang membuat penumpangnya nyaman. Skemanya simpel namun hasilnya tetap optimal. AudioPlus Indonesia. Komponen amplifier Crescendo Revolution 5A4. Keunggulan dari produk ini, diantaranya adalah mampu menghasilkan suara di rentang frekuensi 7 Hz hingga 40 kHz, sehingga bisa memainkan file musik beresolusi tinggi. Selain itu, Crescendo Revolution 5A4 ini juga memiliki Signal to Noise Ratio sebesar 108 dB.
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