best db setting for subwoofer. Hi, I have just bought a pioneer hu and it has settings for db/ octave slope. Here’s how to do it: Find the low-end of the subwoofer’s frequency range either from your user manual or from the manufacturer’s website. If you want to get your low-frequency monitoring right, a subwoofer can be your best friend — or your worst enemy! Learn how to optimise your setup. A quick look at you speaker specs I'd personally Set your speakers to small on the Sony amp settings, gain at around 25% on the sub , low pass 55-60htz on the sub. For example, if your receiver reads “-25 dB” it means that the volume of the signal has been. It is important to realise that bass can be split into sub-bass (20 Hz to 60 Hz) as well as mid-bass (60 Hz to 250 Hz) frequencies. Switch the Subwoofer Level “On,” and now, you can adjust the output of your subwoofer. Likewise, if the speaker is too close to a wall or (worse yet) in a corner, you may need to tune down the low end. Or, for example, if one is on the front wall and five feet in from the left, put the second sub on the back wall and five. The gain AKA volume or Db level will increase how much bass you have. Best 13 Band Equalizer Settings For Car Pioneer. Here is a breakdown of the frequencies: 20 Hz – 60 Hz: Super low frequencies on the EQ. Likewise, an average loud listening level of, say, 91 dB punctuated by a sudden peak of 10-20 dB will make a huge instantaneous demand on your amplifier. Use this step-by-step guide to optimize your sound system enabled with Dolby Atmos. Decibels are most often used to describe the volume of things we hear, such as 140dB for a jet engine, or 60dB for the volume of conversational speech, and so on. In either case, I tend to default to setting the subwoofer to around 78 dB SPL. Add to this, the fact that the sub's bass level changes with changes in listening position. I have to crank the sub volume to full to get a decent sound, whereas I could only turn it halfway max on my previous system with a receiver. These are just some rules of thumb, however. When you tune with a negative db, you run the risk of putting out more power to your speakers or sub than you had actually intended since a lot of music is recorded with a higher db rating. The sub is an old Klipsch KSW100 I’ve had for years. I would like to get the best settings possible but. Should I just use the Audyssey Dynamic EQ to set everything up and be done with it. If your sub has a phase knob, you can try various settings until you get the loudest possible sound at the test frequency. · Turn on the power and set the subwoofer volume to the desired level. Also Read: Best 12-inch Competition Subwoofers. On your AV receiver, the dB indications are still relative and you should hear them that way. Note that the sub pre-out on your 601 is the same as what some receivers label an LFE output, i. This way we don't need to run the main signal over to the subwoofers and back again. Up to 100 Watts, Big Bass in Compact Design, Easy Setup with Home Theater Systems Black. A speaker with a sensitivity rating over 90 dB is considered excellent. 0db is the lowest that the receiver will report. If you are using two or more subwoofers, perform this test with each subwoofer individually with the others turned off. If there is a Phase control on the sub it should be set to 0°. Most people find that 70 or 75 dB on your SPL meter at your . Best to leave that feature off and boost from the manual speaker sub level settings and use DEQ in combination with that if wanting increased bass. " As long as your receiver's line level output and your sub's gain control are adjusted to allow enough headroom. Set the sub crossover high to let the receiver crossover work unmolested. Welcome to the Bowers & Wilkins DB Subwoofers app. You should place the front left and right speakers at a 22-30-degree angle, and the subwoofer should go on the floor on either side of your screen. For your friends, I would initially set playback levels to average about 75 to 80 dB SPL (Sound Pressure Level) at the seating area, with occasional peaks allowed to 85 dB SPL (C-weighted). The Best Listening Level for Mixing — Rick Allen Creative. There's no absolute because overall sound will depend on your room shape & speaker placement. According to Ian Masters of Sound&Vision: "What matters is the sound level that comes out, not how the various sound controls in the signal path are set. So for 30HZ mains you could use 60HZ. It is a good idea to have an equalizer in . This means you will need to add, on average 10 feet, to your distance setting at this stage before you start listening to better align the signals reaching your ears from your subwoofer and main speakers. Finally, if you put that single subwoofer in a corner at the intersection of three room boundaries (1/8 space or ½ π), you can theoretically net a 18dB gain relative to the subwoofer out in the open field, above the ground. Next, turn your system back on and turn the volume on your radio up to max, make sure no music is playing in the system. This has been a requested topic from a few of my viewers. How to Configure Your PA System. So your choice of amplifier will largely be dictated by this. For the lpf I would use the steepest slope. The average speaker, of course, comes with 87 to 88dB. Check out great products on ebay. A 24-dB-per-octave Link-Riley filter keeps the frequency response flat where both the subwoofer and top are crossing over. My sub's manual states to set the gain between 10:00 and 2:00, (1/3 gain to 2/3 gain). Playing with your EQ Finally, the fun part!. For example, if the speaker's bass extension extends down to 45 Hz (-3 dB), set the sub's LPF to 45 Hz. If MultEQ reports high negative trims (e. LFE+Main sends a duplicate signal to the subwoofer for any channel set to Large and applies a 24 dB/octave low pass to the subwoofer at the selected ‘crossover’ frequency1. Dealing with Different Speakers. You generally want your crossover set to where your speakers start. Conversely, some (certainly not all) larger tower speakers handle nearly full-range sound. If the ANC ( Anti Noise Cancelling) feature is set at 0 or – 2. The blending should sound clean and seamless. Play program music with a lot of bass through your full system. It has a variable LPF range from 40Hz to 150Hz, not sure what the best setting is. The sub is connected via sub out LFE and plugged into LFE in on sub. Depending on all sorts of things, the difference might be large, or it could be as little as 1 or 2 dB. A subwoofers setting should be set at 0 on the subs plate amplifier, no more no less for . , –12 dB) for the subwoofer, then you should turn the level control further down and run MultEQ again. Most modern AV receivers feature an auto EQ program that will assign the proper crossover frequency automatically based on the capabilities of your loudspeakers. Also, find the subwoofer setting in this menu, and make sure it is set to OFF (yes, that's right - "OFF" - you will turn it back on later). Maximum SPL of the subwoofer increases by 12 dB. All You Wanted To Know About Subwoofers. Turn the controls using a small flathead screwdriver. The best way to determine if your . When set to LFE+Main, the subwoofer still gets the LFE channel and redirected bass from any other channels still set to Small. When the subwoofer is about three feet from the full-range loudspeaker—a typical distance when the loudspeaker is on an adjacent tripod stand— delay your subwoofer by 2. For things that humans hear, dB is measuring the Sound Pressure Level (dB SPL), with 0dB being the lower limit of human hearing and 120dB being our threshold for pain. Turn your subwoofer GAIN up all the way. 80HZ is probably the best setting. Take help from the video below. Subwoofer Calibration Tutorial: How to Make Your Sub Sound Better. that is probably the best setting. To get the best experience with your DB Subwoofer, ensure you have the latest version of this app. The crossover frequency of your subwoofer is the frequency at which your speakers start to roll off and your subwoofer kicks in with LFEs and bass notes. The subwoofer takes care of everything below that point. Subwoofer Settings · Before playing the subwoofer, adjust the crossover. Settings Adjusting the System 1. If the sub and main speakers were in phase, he'd hear a single thump when he connected the battery to the wires leading to the sub. Set up your speakers for surround sound. Set your equalizer to all-flat (all settings at zero) and any other sound enhancements disabled. This is to ensure you don't clip the receiver's subs section by having it drive into a turned-down sub. Got an existing home theater setup? You, my friend, are out of luck. The purpose of the Phase setting is to change the polarity/direction of the sub(s) running off the amplifier. Most subwoofers, including those made by PreSonus, provide throughputs to connect satellite full-range systems. I have some new Polk RM 8 speaker set with a pair of fronts, a center, 4 surrounds and one Sub Woofer. This seems very abnormal seeing rest of the chanel levels are all in the minus db zone. post to see how to choose the proper amplifier to best fit your speaker and subwoofer setup . For a 12” typical sensitivity is 90 dB, meaning 90 dB SPL at 1 meter with 1 watt input. It's configurable, and you can try setting it up for your sound system, but it's often unstable, and it would be best to leave this setting to default. 5-volt battery to test subwoofer phase. How to Set Crossover Frequency for Car. An average speaker comes with a sensitivity of around 87 dB to 88 dB. Now as you can see from the image, that’s how you have to set it for a deep thumping bass. It's a good idea to measure the SPL at least two . Once you've hit that point of no return, the music may sound garbled . Please can someone tell me the best setting to use on front . People cannot hear frequencies below 12-20 decibels (dB) well, so it isn't necessary for subwoofers to transmit. Set the subwoofers' crossover frequencies to the -6 dB rating of your speakers, and set the slopes (if offered) to 12 dB/octave if your main speakers are sealed-box, and 24 dB/octave if your main speakers are vented or have passive radiators. Allows you to change the speaker configuration such as presence or not of subwoofer, distance of speakers and so on. Best to stay under 0dB though in the manual settings so if the original sub offset after running Audyssey is -6 then it's safe to bump that up 4 to 6 dB plus use DEQ at lower listening levels. This results in 0db being regarded as the relative to reference volume level. This is the frequency at which your subwoofer starts playing bass notes. Use it to tune subwoofers or speakers alike. Settings are automatically configured . 1 surround sound setup has two front speakers that give you stereo sound and a subwoofer that adds deep bass. Set the subwoofer's internal low-pass filter cutoff frequency to the same value as the main speaker's bass extension. View current crossover setting, high-resolution Frequency Range (–10 dB):. Set the source unit volume to 3/4 of full volume. The Edifier R1280DB has a frequency response of 55Hz-20KHz. Your best bet is to set the subwoofer crossover frequency to match the rating of the speakers, then turn the frequency higher if you hear a "hole" between the subwoofer and the speakers—for. Disconnect the speaker (s) from the amplifier. Subwoofer (s) - Low-Pass Filter = 80 Hz (12 db or 24 db Slope) Note: Both System One and System Two assume the speakers are at least 5. Anything above 200 Hz will be produced by the main speaker units instead of the subwoofer itself and will be passed to the LFE or a sub-channel. What Is The Best Subwoofer Brands?. Because your fronts go down to 30Hz you could go lower - a general rule is 1/2 to 1 octave above the speakers f3 point (the point at which the output is 3dB down). " Going from -25 dB to -15 dB, an increase of 10 dB, should sound about "twice as loud". 1 watt/1meter SPL (sound pressure level) - Usually printed on the back of your speaker cabinet. How to Set Up and Calibrate a Subwoofer. Set the subwoofer's built-in volume control about halfway, run the calibration and then adjust accordingly if it sounds too bassy (or not bassy enough) when playing a film clip. Using the internal test tones, calibrate each speaker to roughly the same level (use 75dB as a reference). The rest should be generally accurate however. SETTING THE CROSSOVER AND INPUT SENSITIVITY. This is where your amp can run out of steam very quickly. Vv Click "SHOW MORE" vVGAME CHANGING SUBWOOFERS:http://www. Mid-points of opposing walls is best. The app includes guides on positioning and connecting your subwoofer to get you started, plus an automatic calibration and equalization system that, working in conjunction with the microphone in your phone, will help you get the best possible sound from your. How does it sound to you? Is the bass well integrated with the rest of the speakers and room? · If you want a bit more, try increasing the level by 2-4 dB. The need for power escalates very quickly as you approach “lifelike” or “theater” levels of around 100-104 dB. Please note: • This app is only compatible with DB1D, DB2D, DB3D, and DB4S Subwoofers. Maximum output of speaker (dB) based on SPL and Max power. When the two monitors are combined, your SPL meter should read 85 dB SPL. 25-inches in diameter or larger. We recommend placing chairs at least 1/4L of the room away from the back wall. A friend of mine who was the manager at an audio store told me the best audio gear doesn’t even have tone controls. They need to work with each other—not against each other. If the notes sound pretty even, you nailed it. Highly sensitive speakers (sensitivity >95 SPL or even > 100), can produce extreme sound levels with minimal power. Keeping this in consideration, what is a good dB for speakers? Understanding the “0 dB” Setting Think of 0 dB as maximum volume. Like You mentioned there are + and - decible ranges for each speaker. These are available at Radio Shack for a cost of around $40. Now find out what the rated bass response of your speaker is (the -3 dB response, not the -10 dB response). The key to setting the sub's level is to match it to the other channels. I think much of the disagreement over setting subwoofer levels is based on a misunderstanding of how we hear bass frequencies. It'll work with any of the picks in our Best Budget Subwoofer guide—and with (for Android) or Audio Spectrum Analyzer dB RTA (for iOS). Its job is to augment the sounds from the front/right speakers so you won't always hear it "working". If the person enters the room and praises about the . Set the subwoofer’s crossover to the same frequency. When determining the best setting for a sound system, it's important to know the frequency range of the speaker as well as that of the subwoofer and how to . If you have a subwoofer with room EQ, then you should run that first in the subwoofer. Subwoofer Crossover Settings. There is no set formula as to how to set your initial line level settings. So I connected the sub to speakers via a thin RCA-3. Subwoofers received a great deal of publicity in 1974 with the movie . Where to set low pass for subwoofer?. Large Vs Small (LFE + Main, Double Bass, etc…). Assuming you already set up the best location for your subwoofer, the level can really be set to taste. That is the recommended crossover per THX specs. Some manufacturers do design their products to fire straight ahead, and we do find this the optimum set up for some speakers, so it’s best to check the manual for information and. Tuning down the HF might help a little though the best answer is always to change the positioning. This can be established using a decibel meter. What are Subwoofers and Why Do You Need One?. Leave the Volume at 80% because anything higher will destroy the mids. As you have probably gathered, the DB4S subwoofer is something of a surprise appearance in B&W’s long-running DB range. Below are the systems and their recommended filter settings. Merely buying a great subwoofer is no guarantee that you'll wind . For example, if the speaker's bass extension is 40 Hz (-3 dB), . If the speakers are smaller, such as 4-inches, a frequency higher than 80 Hz for the HPF might be required. I tend to like a bit more bass, and that extra 3dB seems to do it for me in most cases. Go into the AUDIO settings on your receiver and set the volume scale within the VOLUME setting to the –79. As a general rule speakers should be set between 70-80 dB in volume. The higher the sensitivity rating, the louder your speaker is. Exact placement and availability of the settings could vary depending on Windows version, Realtek HD Audio Manager version and motherboard vendor customization. If you ahve a receiver with a crossover setting in it- and you set it, for example, for 80 hz-- it will filter out all sounds above 80hz, sending ONLY 80 and down to your subwoofer. Now, if you set the x-over to high on the subwoofer it could result in . The RCA output in your system can be used as a Subwoofer output to improve the bass. The best thing to do would be to check Your levels with an SPL(sound pressure level)meter. Whether your setup is for movies, music, games, or all of the above, You can have the best subwoofer on the planet, but when it's in an . While 85 dB SPL is often used for THX movie theaters, that level is simply too loud for most listeners with test signals in the confines of an average-sized home theater or living room. What Is A Good Crossover Frequency To Use For Home Or Car Audio?. Electronic crossover is used here to 500Hz high pass the tweeter, low pass the subwoofers (80Hz), and bandpass the midrange at 80 Hz. In the case of a basic subwoofer system, set the Low Pass Filter (LPF) crossover at 100Hz or so. My HSU Research speakers are rated down to 60 Hz. Not uncommon to alter the db settings a bit after autosetup however. So if you set all of your speakers to 75dB, don't sweat setting your sub to say 77-78dB. Turn the input sensitivity control on the amplifier all the way down. Setting Speaker Levels & Distance for Home Theater Manually. What dB should I set my speakers?. If you don’t configure bass management properly, you’ll find that your low frequencies can be muddy. Only the "Layout" subwoofer setting actually determines where the receiver believes the subwoofers to be. Bass (From Descriptive Audio) Though bass is not a genre in itself, many people wonder how best to use EQ settings to obtain the perfect bass settings. I set all tone controls flat and use YAPO also, but you can set them the way you like if that is what you want. Once this is done, invoke the test tone again and ensure the receiver's master volume is set to 0db prior to then taking SPL measurements. If you take that subwoofer and place it at the floor/wall intersection, then that’s called a ¼ space or π, and you’ll gain another 6 dB of output reinforcement. Setting the level of the subwoofer ( sw . This will create an overlap between your subwoofers and your full-range system’s frequency response. For example, if the speaker’s bass extension extends down to 45 Hz (-3 dB), set the sub's LPF to 45 Hz. This is my first home theatre so a virgin so to speak on what's going on. If your AV receiver's setting is at, say, -25 dB, and you turn it up to -22 dB, that 3-dB increase in loudness should sound "slightly louder. The Five Cs of Subwoofer Setup. It comes down to how confident you are in setting your gains. Only sub-bass and kick drums reproduce these frequencies and you need a subwoofer to hear them, or a good pair of headphones. 12/18 db slopes at 80hz means your sub is playing well into the 200hz+ zone. Setting up a theater properly involves using . Furthermore most main speakers will not be able to reproduce bass with the same low level of distortion as the best subwoofers out there today. The gain set on my sub is at 12:00 on the dial and crossover freq on sub itself is maxed out as well. How to position the front left (FL), front right (FR) and subwoofer (SW) speakers. What is the best dB settings for 5. Set the crossover point 10 Hz higher than the low end of your speaker’s tolerance range. Adjust the subwoofer position using our crawling technique to ensure you've found the best possible location Adjust the listening seats as needed (placing chairs near a back wall may result in excessive bass boost). Your going to adjust these ranges using the SPL by way of the speakers Test Tones. 1 Note if the mains are set to Large and. If your AV receiver’s setting is at, say, -25 dB, and you turn it up to –22 dB, that 3-dB increase in loudness should sound “slightly louder. Set the subwoofer’s lowpass filter to its highest cutoff frequency. NOTE: A setting of 0 dB indicates that the LFE signal is being sent to the subwoofer at the same level as it was. Some subwoofers—such as those from SVS—also offer a control that adjusts the slope of the LPF above the cutoff point, which greatly helps to integrate the subwoofer (s) with the main speakers. Our setup guide will get you started, with basic placement information, room considerations, and other tips. Three speakers in the ceiling in the front and 2 ceiling speakers in the back where the subwoofer is. For example, let's say that a speaker's bass extension is 50 Hz (-3 dB). Certainly the most integrated subwoofer set up method I have heard so far (and have used almost exclusively for about 18 years) is the REL recommended method where you run your front speakers full range (Large setting), specifying " no subwoofer" in the amp's settings and running the subwoofer in parallel from the same power amp as the main. First, set the subwoofer's volume knob halfway up, and then set the sub's volume level with test tone as you did for the speakers, and the meter reading 75 dB. However, 18dB/octave can be better for some subwoofers depending on your particular subwoofer, the enclosure, and how your vehicle alters the sound. With your sound system off, disconnect the RCA cables that run to your amplifiers. set the dial to 70 dB, the weighting to "C" and the response to "slow. These may require custom settings. A whisper has only 15 to 25 dB. Set the Volume somewhere between 0 and +10 then use the Sub level on your receiver to adjust for best level relative to your other speakers (or you can set the receiver to 0 and adjust the volume at the sub). 85 dB seems to give you the flattest hearing curve because of the equal loudness contours of the human ear – the way the brain interprets what the. This means that both the low-end and high-end frequencies are well covered. One More Consideration—The Center Channel The last thing to mention is the center channel. But when it switches from the speaker tone to the subwoofer tone, you want the average to be between . Whichever phase setting yields the highest measurement on the meter is the one you want. Since decibels use a logarithmic scale, a 5 dB or 10 dB change represents a dramatic increase or decrease to a particular frequency band. It has become mix engineers’ adopted standard. 200 Hz to 600 Hz: Low mid-range frequencies. The low-pass crossover is the frequency below a subwoofer’s frequency rating. When connecting normal speakers to the rear speaker leads, set to [OFF]. The slope can be set as either 12dB or 24 dB. 1) if your room is an enclosed rectangle, put the subs directly across the room from one another. THX recommends 80Hz for most systems. Subwoofer (s) and Active Front 2-Way Components. This really ends up producing sub-par sound. If the manufacturer just gives one number, use that. A lot of people boost the sub and center up a bit after mic setup. Going from –25 dB to –15 dB, an increase of 10 dB, should sound about “twice as loud”. Most speakers sound best slightly toed-in towards your most regular listening position, which ought to be equidistant to each speaker for peak sound dispersion. Once the system is operational, set all crossover points to the approximate settings. The subwoofer crossover is a crucial part of setting your speakers to work harmoniously and avoid inconsistencies with the output. Now sit in your listening chair and listen to that melodic bass line again. If you are looking for information about buying subwoofers, please read our Subwoofer Buying Guide and check out our selection of top-rated subwoofers, then come back here to learn more about setting them up to deliver great sound. The three subwoofers above it have followed the usual arrangement of having their cabinets scaled down in size with each successive model. The sub specs say it can play down to 25 Hz, which is very low, and the sub has a crossover adjustment that goes from 50 Hz to 150 Hz. For systems using amplifiers, be sure you’re not using a bass boost for the subwoofers. 1 surround sound?As a general rule speakers should be set between What should subwoofer dB be set at?. Your desired frequency range for a subwoofer will depend on your other speakers. However, an advanced technique when you have two subwoofers is to actually set them up in terms of looking for the best placement separately, and then balance the levels and make the adjustments with both of them playing after you’ve found a good position that gives you the smoothest bass for each subwoofer individually. Best Equalizer Settings For Bass. The subwoofer works perfectly fine without an amplifier. Enjoy the best sound from your home theater when you optimize your speakers' positions. 60 Hz to 200 Hz: Low frequencies requiring a bass or lower drums to be reproduced. set the dial to 70 dB, the weighting to “C” and the response to “slow. One such myth is that there is no way to add subwoofers to a good stereo system without making matters worse. Several variables impact this, including the . Keep in mind that many subwoofers might have a built-in amplifier. So it would be connected to an LFE input on a sub which had one, to bypass the internal sub crossover, since the receiver has already handled the. Typically, this setting will be used in most cases for 2 reasons: Your set up has your subwoofers inverted and you need to change the way in which your subwoofers play (inward vs. Some satellite speakers can't reproduce very low frequencies, however. A millisecond translates into about 1 foot of distance. Genelec 7050C Active Subwoofer. Setting Subwoofer Phase the Easy Way. Follow the guide below for insight on where instruments sit on the sonic spectrum:. The volume output of your subwoofer and speakers. Consider using equalization to tame room modes. So, if you place your Receievr at 80 and your sub at 100- the sub is, essentially, refiltering material that is already gone. The most important distinction in setting an EQ recognizes the need to add in or subtract specific frequencies. To balance bass and treble, how do you connect the Treble speakers to the amplifier to hear better? Add the best chokes for Treble (tweeter) to increase the. 0 dB) - all of the speakers are around the middle, which i am assuming is 0 dB and the subwoofer level is all the way towards the right which is +9db. For example, if you must place the speaker closer to a surface than is optimal, you may get some high frequency (HF) reflections. The subwoofer only works with other Sonos equipment, and while the company . How to increase the Subwoofer base level?. Experiment with the polarity setting on your subwoofer to see which position provides the best bass response. Genelec subwoofers provide a +10 dB LFE Subwoofer placement. Set the crossover point 10 Hz higher than this range for the best result (or go with the recommended 80 Hz). You've invested a lot into your top-of-the-line receiver: the You also likely noticed the “0 dB” (decibel) setting on the volume panel . ” Going from –25 dB to –15 dB, an increase of 10 dB, should sound about “twice as loud”. If you're crossing the sub and mids at 80hz, put the sub on the steepest slope that yoour hu gives and chances are you'll find your midbass much clearer. A 12/dB setting is good and will do the job in most cases for subwoofers (low-pass) and full-range speakers (high-pass). It's ok to boost the sub level a couple of dB if you want a bit more bass impact. Some people have a problem understanding dialogue in films. On other occasions, I've had a sub level set way to high, and found the sub producing substantial output of frequencies that have leaked past the adjustable 18 dB/octave and fixed 36 dB/octave fixed filters. Setting Crossovers – JL Audio Help Center. This simple set-up is ideal for mobile DJ applications because the music is largely already optimized for a three-way sound system. A 12 Step Guide to Setting Up Dual Subwoofers. Some speakers have a small built-in woofer inside and while it'll save a bit of space at your setup and it's better than nothing, . For this test, put in your earplugs, turn off the subwoofer and get into your receiver or processor's set-up menu. Setting a higher crossover point can often lead to sound quality benefits since the main speakers – and the amplifiers driving them – are subject to lower power handling demands. When the full-range loudspeaker is on stage and the subwoofer is on the floor, the typical distance is around six feet. Subwoofers usually sound best placed a third of the way into the room from the side and front (or back) wall. Subwoofers are great at making music loud, but only to a certain point. The phase response to the front of a CSA is almost identical to a standard setup so the crossover settings relating to the top cabinets . Many experts recommend -5db, but it's rather arbitrary. Subwoofer Frequency setting Guide. To help you get a general idea of sensitivity, you can look at the following examples. The Low Pass Filter screen lets you to adjust the low-pass frequency for the left and right (RCA or speaker level) inputs. To get started, simply launch the DB Subwoofer app and follow the on screen instructions. Yet, a speaker with a 90 dB or more sensitivity rating can be considered excellent. Now let’s get down to tuning! 4-Channel Class D Amplifier- Kicker IX500. The best setting for this channel will depend on the listener, the active subwoofer being used, the size and placement of the main speakers, the size of the listening room, and the location that the subwoofer is placed in this room. Now pick a volume setting on your AV receiver that's typical of the range you usually listen at. The need for power escalates very quickly as you approach "lifelike" or "theater" levels of around 100-104 dB.