I demoed these speakers without a crossover and without EQ. The green line shows the final measurement where either distortion and/or compression failed. Impedance measurements are provided both at 0.10 volts RMS and 2.83 volts RMS. Using Klippel’s Distortion Analyzer 2, Linear Lumped Parameter Measurement Module, Pro Driver Stand and provided Panasonic ANR12821 Laser along with Klippel’s Training 1 - Linear Lumped Parameter Measurement tutorial, I measured this drive unit’s impedance and small-signal parameters. This results in a very “hollow” sound in the midrange and rather “forward” sounding presence region followed by a lack of upper end detail and sense of space (also thanks to the increasing directivity of the tweeter). In short, the CEA-2034 graphic below takes all the response measurements (horizontal and vertical) and applies weighting and averaging to sub-sets and can help provide an (accurate) prediction of the response in a typical room. However, these “collapsed” representations of the sound field are not very intuitively viewed. You may ask just how useful the above prediction is. Generally speaking, higher sensitivity speakers (like pro-audio speakers with 100dBSPL @ 2.83v/1m spec) suffer relatively no compression while lower sensitivity speakers (low 80’s dBSPL @ 2.83v/1m) suffer more compression. A good speaker will have little compression (< 1dB), where poorer speakers may suffer greater compression (> 2dB). Micca lists these “Feature Highlights” on their site: That’s a big “no” to every-single-one of the above “features”. Each bookshelf speaker features an advanced 18dB/Octave crossover design. No bass below ~160hz. The result of painstaking fine tuning through balanced application of science and art, the crossover yields a transformed sound signature … I couldn’t take listening to the speakers anymore. Frequency Response. This means, more demanding audiophiles may consider the sound to be somewhat dull and lacking depth. It’s not bad, but not great either. Below are the nonlinear results. If there is a single set of data to use in your purchase decision, this is probably it. The speaker’s F3 point (the frequency at which the response has fallen 3dB relative to the mean SPL) is 116Hz and the F10 (the frequency at which the response has fallen by 10dB relative to the mean SPL) is 65Hz. Micca Audio is a Chinese manufacturer of both passive and active loudspeaker products; the upstart brand also offers power amplifiers, digital media players, and other accessories. Below are both the horizontal and vertical response over a limited window (90° horizontal, ±40° vertical). At this point I decided to move closer to see if listening in the nearfield would help (spoiler: it didn’t). Distortion is minimal. So Polk Audio T15, while being a cheaper option, tends to get more favorable ⭐ reviews than the $90 Micca MB42X, as seen on the chart below. From the above data we can see the following: Frequency response data (horizontal, vertical, “Spinorama”, polar, spectrograms, etc.) It’s rare I have a mid/woofer be limited in excursion due to inductance. But… it’s close enough. As you can see in the blue window above, the Micca MB42X Mark III is all over the place. Micca has been a friend to budget audiophiles for a while now, releasing a series of affordable, compact and sometimes oddball speakers that do enough things right to catch audiophiles’ attention. You also want to listen to music you enjoy because auditioning a stereo system shouldn’t feel like a chore. This measurement follows the IEC 60268-21 Long Term SPL protocol, per Klippel’s template, as such: Each voltage test is 1 minute long (hence, the “Long Term” nomenclature). Since many will likely use this with a PC. Max SPL for 80Hz to 20kHz is approximately 100dB @ 1 meter. They were that bad. The below data provides the metrics for how Maximum Long Term SPL is determined. But below about 1kHz it strays vastly from that mean and gets as low as 80dB at 300Hz. You can hide them with the help of a magnetic grill, which allows for a more customizable use, as you will be able to change the appearance of your Micca MB42X every day. The minimum impedance dips to about 4.2 Ohms around 1.4kHz with a nominal impedance at about 5 Ohms. Well, I’d be remiss for not delving in to that a little bit here. On top of that, it's fairly safe to say that Polk Audio T15 are more popular speakers, based on their 4,000+ reviews. Depeche Mode’s “Enjoy The Silence”: sounds distant; hollow through the entire midrange. The sound might not seem “full” to some users without a subwoofer. Updated driver level matching to result in overall smoother response; Posted in: Micca MB42X, Micca MB42X-C. Power Handling: 75 W. Sensitivity: 85dB. passive. In the nearfield listening, the output was about the same level because of distortion limitations; I didn’t like them above 90dB. They sound more expensive. Notice how well it matches the predicted in-room response. This is important because I want to try to correlate the objective data with what I hear in my listening space in order to determine the validity of the measurement process. The compression is high. The dashed blue line represents the -20dB (10% distortion) threshold for failure. The overall performance didn’t actually suit the price category of these speakers. Applying both will provide a good idea of the limitations if you were to want to run a speaker full range vs using one with a typical 80Hz HPF. The Micca MB42x MKIII is a terrible speaker if you intend to listen to it as a budget audiophile speaker (or anything resembling that). It is no surprise this speaker does not get my recommendation. On one hand, Mb42 doesn’t have a crossover. The mean SPL, approximately 85.5dB at 2.83v/1m, is calculated over the frequency range of 300Hz to 3,000Hz. 5" (D) I have provided both an absolute SPL version as well as a normalized version of both the horizontal and vertical sound fields. I currently own the Micca MB42X and the now discontinued Micca Club 3. 8" (w) x 6. The MB42X impresses with its powerful picture projection, it’s easy to mistake the speakers for a … The “mean spl” values associated with each voltage provided in the legend is based on a calculation of expected volume assuming linear volume at the 300-3kHz region. The null at the transistion around 4000Hz looks less severe than it is because I am only have data for one-third octave measurements. The midrange exhibits a trough centered on ~300Hz. The volume controls and the power button are placed in the back, which might be inconvenient. The compression is high. I would strongly suggest using an EQ to help with the response. 5" (H) x 5. You can read as many reviews as you want, but let me tell you this: You won’t find anything better in this price category. The voltage just before this is used to help determine the maximum SPL. It truly reaches those low-frequency depths and produces them well. The tweeter is level biased just slightly below neutral to reduce listening fatigue without losing a ounce of detail. A spectrogram is an alternate way to view this full set of data. Note: This is not a standard merge of nearfield and farfield nor a merge of ground-plane and farfield. I used Room EQ Wizard (REW) and my calibrated MiniDSP UMIK-1 to get the volume on my AVR relative to what the actual measured SPL was in the MLP (~11 feet from the speakers). I said it. In the below results I provide the summarized table as well as the data showing how/why this SPL was deemed to be the maximum. 75" silk dome - crossover: 12dB/Octave - enclosure: ported - frequency response: 60Hz-20kHz - impedance: 4-8 ohms - Sensitivity: 85dB 1W/1M - power handling: 75 watts (each) - dimensions: 9. The Micca MB42X is a pair of compact speakers featuring a 4-inch carbon fiber woofer and a 0.75-inch silk-dome tweeter. Micca MB42X specifications: - woofer: 4" carbon fiber, rubber surround - tweeter: 0. The Neumi is the same price as these Micca speakers and the Neumi performance is leagues better than the Micca. I made it through about 7 songs before I just stopped. So, I came up with a different way to view the speaker’s horizontal and vertical sound field by providing it across a 360° range in a globe plot below. Such is the case in my evaluations. The result is a much improved budget-tier bookshelf speaker that is performant across the entire range. The difference in the midrange to upper-midrange/low-treble is nearly 5dB and then a 3dB dip from low-treble to upper-treble above 7kHz. Distortion and Compression measurements were completed in the nearfield (approximately 0.3 meters). Besides, the subjective evaluation is purely to help tie to the objective data and make sense of what I am hearing to help you all get an understanding of how relevant the data is. The design is a bit plain, to be honest, but that’s expected since it’s a budget speaker. Below is a breakout of the typical room’s Early Reflections contributors (floor bounce, ceiling, rear wall, front wall and side wall reflections). And, finally, here is a great video of Dr. Toole discussing the use of measurements to quantify in-room performance. Both are currently free software. Portugal The Man’s “Feel It Still”: The only song that had a positive attribute which was around about 800Hz which sounded the most natural so far. One of the things I absolutely need to mention in my review is the build quality of Micca speakers. The B652 is louder, but no flatter, on the low end. One major downside to “gating” or “windowing” the impulse response is this low-resolution does not show resonance in the midrange. Both speakers have 4.5″ woofers made of Kevlar. The tuning frequency of the enclosure is approximately 50Hz. The bass was lacking because of the small woofer, and the treble had a … Both are currently free software. Woofer: 4-Inch Carbon Fiber. Mic placed about 0.50 inches - relative to the baffle - from each drive unit and port. The response curve of the Micca MB42X MKIII is extremely non-linear; exhibiting as a wholly recessed midrange, a prominent bump between 1-2kHz and poor linearity above 4kHz. Furthermore, you can find discussion in Dr. Floyd Toole’s book “Sound Reproduction”. There. Overall, I found the max SPL I could drive the speakers to was around 88-90dB at my listening position, depending on the music. Thus, this is sometimes referred to as “Spinorama” data. I also love the matte finish and the magnetic grill. The frequency response rolls off over 16k significantly, while there are some spikes and dips in the lower ranges from 128 Hz to 800 Hz. Here’s the Neumi via my Amazon link again, if you want to buy them through my affiliate link and help the site out: If you like what you see here and want to help me keep it going, you can donate via the PayPal Contribute button at the bottom of each page. So, if you’re one of those people, think about investing in a subwoofer. Unless you absolutely need a speaker this size, you have the ability EQ until your heart (or ears) is content and you don’t plan on listening louder than talking levels in the nearfield… don’t buy this speaker. are all based on a 2.83 volts RMS logarithmic sweep at 1 meter to meet the standard sensitivity measurement spec. Crossover Channel Qty. Whether you want to listen to music on your PC or love watching movies in your living room using your home theatre, this model will allow you to enjoy every moment of that. The compression threshold was exceeded above this SPL. Fluance SX6 speakers are much taller than Micca MB42X. You can also join my Facebook and YouTube pages if you’d like to follow along with updates. YUCK. Micca’s MB42X set is small and compact, but this pair sounded poor next to all of the other contenders. Multitone distortion testing. For all the reasons listed above: What I provide here is objective-heavy analysis. From this you can determine how much absorption you need and where to place it to help remedy strong dips from the reflection(s). The MB42X bookshelf speaker from Micca inherits the looks of its predecessor, the MB42s model, with a simple ebony laminated wood grain design that allows it to blend into any room or décor. 60 - 20000 Hz. The distortion threshold was exceeded above this SPL. Again, as a pointer to the wide horizontal envelope, notice how the Rear Wall Bounces Curve is relatively high in amplitude (for a front-facing tweeter, at least) until about 10kHz. frequency response graphs, CSD waterfall plots, subjective gear reviews. However, when possible, it is always best to demo speakers in your own room. This is a minor drawback, but I know that it might annoy some users since it is sometimes inconvenient to reach to the back of the speaker every time you need to adjust the volume. But because of other factors such as aesthetics, pride of ownership, etc. When a crossover is used the compression near the speaker’s Fs is attenuated and overall the compression effects are mitigated. The Pioneer BS22 and Micca MB42X both use dome tweeters. But on the other hand, Mb42x has an enhanced crossover section. Full response (20Hz - 20kHz with the angles from 0° to ±180°) with absolute SPL values, Full, “normalized” response (20Hz - 20kHz with the angles from 0° to ±180°) with SPL values relative to the 0-degree axis, Rated maximum sound pressure according IEC 60268-21 §18.4, Using broadband multi-tone stimulus according §8.4, Stimulus time = 60 s Excitation time + Preloops according §18.4.1, -20dB Distortion relative to the fundamental, -3dB compression relative to the reference (1V) measurement, First with a 20Hz to 20kHz multitone signal, Second with a limited 80Hz to 20kHz signal. The voltage just before this is used to help determine the maximum SPL. The evolution of the original irreverent and irrelevant and non-authoritative site for headphone measurements, i.e. Audioholics has a great writeup on what these data mean (link here) and there is no sense in me trying to re-invent the wheel so I will reference you to them for further discussion. At any rate, if, after you read this review, you still want to purchase a set, you can help the site by purchasing through the link below which earns me a small commission. Not “involving”. With the frequency response range of 60Hz-20kHz, they offer a smooth and balanced performance. Micca Mb42 has a filtering capacitor on its tweeters. Additionally, the MB42X utilizes a highly optimized 9-element crossover with full 18dB/octave* alignment and compensation network. frequency response graphs, CSD waterfall plots, subjective gear reviews. Just “there”. The Micca MB42X has less variability on the high end than the Dayton B652, which will ultimately sound better for vocals and most instruments. MB42comes only in … The distortion is high. Red = MLP Average (average response in the head area at the main listening position), Green = Front Row Average (average across front 3 seats in my home theater), Blue = Predicted In-Room Response from the data, The speaker was aimed on-axis with the vertical listening axis between the mid and tweeter per. Steve Winwood’s “Higher Love”: Wide left soundstage; missing something below 1kHz tonally; hollow sounding. I even went so far as to use my Dayton DATs to sweep both speakers to make sure the impedance curves matched because I thought maybe one of them was damaged but that wasn’t the case. This is a review of the older Micca MB42x, Click here to go to the updated review of the MB42x.If you just want to know more about the MB42x, this review is a pretty good read which is why I left it up, but it's not indicative of the sound of … Featuring the range of 60Hz-20kHz, such frequency response allows for a rather balanced sound. The linear excursion is capped at 1.4mm one-way due to inductance variation. As for bass… well, there’s really not much there. Above this, the distortion is anywhere from 2-3% THD in the midrange at these same listening levels. Is it the room, the actual speaker itself, my brain, or a combination? The distortion is high. Multitone compression testing. Though, I suggest you buy the Neumi BS5 if you are in the market for a sub-$100 bookshelf speaker. Frequency Response: 60Hz-20kHz. Looking back at the data, this is the only area in the response that is linear within about 1/2-Octave above/below. Distortion is very high below 200Hz with greater than 5% THD at typical listening levels. There’s truly nothing positive I can say about this speaker. You can watch a demonstration of this testing via my YouTube channel: As I said above, the provided frequency response graphs were given with a limited set of data. Now, another thing I want to point out is the frequency response of these MB42X speakers by Micca. And with a bookshelf speaker like this, it should absolutely be crossed above 100Hz to limit any playback near the Fs of 87Hz. The Police “Wrapped Around Your Finger”: There’s nothing in the bassline below about 140Hz. For the size of the speakers, the bass works really well. If you want help understanding what this data means, watch the video below. Micca MB42X-C Center Channel Speaker ... what really sets this option from Polk apart is its performance tuned rear firing bass port that enhances the low-range frequency response … https://youtu.be/iCjJufvW0IA. I listened first at my typical listening position about 11 feet away. The Micca MB42X are small, elegant, and impressive bookshelf speakers that belong to a more affordable category of audio speakers. With that in mind, what you see below is first the Total Harmonic Distortion at varying output levels. All of these parameters translate to a speaker that needs to large enclosure (so the Qtc will not be any larger; as the Qts itself is already relatively high), high low cutoff point (due to high Fs) and low sensitivity (even though the on-axis average SPL is ~ 85.5dB, the SPL in the bass region is in the low 80’s). The bass extension and output is unusually satisfying for such a compact speaker, while its smooth frequency response reproduces music faithfully with engaging tonal balance. Max SPL for 20Hz to 20kHz is approximately 88dB @ 1 meter. It definitely feels fine for the price and looks like it can last for many years. I did not want my knowledge of the measurements to influence my subjective opinion. If you question the performance and can demo the speakers in your own home, I suggest you take advantage of the opportunity. It is far more important that your evaluation music be something you are familiar with than it is to be esoteric for the sake of being esoteric. This speaker does not have that at all. The reason these speakers are one of the best budget bookshelf speakers is mainly down to the crossover, a feature that was not included in the previous model. With the frequency response range of 60Hz-20kHz, they offer a smooth and balanced performance. The normalization simply means that I took the difference of the on-axis response and compared the other axes’ measurements to the on-axis response which gives the viewer a good idea of the speaker performance, relative to the on-axis response, as you move off-axis. Balanced woven carbon fiber woofer for enhanced transient and impactful bass, High performance silk dome tweeter for smooth treble and accurate imaging, Highly optimized 9-element crossover with full 18dB/octave* alignment and compensation network, Ported enclosure delivers extended bass response with low distortion, Dramatically transformed sound signature that is incredibly open, balanced, and dynamic. That means a data point every 300Hz. Components: Oppo BDP-103 playing music off my thumb drive feeding signal via HDMI to a Denon AVR-X4000 which then feeds in to a refurbished Adcom GFA-545 for power. Micca’s build quality feels sturdy with light 3/8′ vinyl covered particleboard. Crossover: Advanced 9-element. Micca MB42X-C Specifications: Woofer: Dual 4″ Carbon Fiber Cone with Rubber Surround; Tweeter: 0.75″ Silk Dome; Crossover: Full 18dB/Octave* Enclosure: Ported; Frequency Response: 60Hz-20kHz; Impedance: 4-8 Ohms; Sensitivity: 86dB 1W/1M; Power Handling: 100 Watts (Each) Dimensions: 5.3″ (H) x 15″ (W) x 7.1″ (D) If you have a high-Q resonance at 450Hz the 300Hz resolution data will not show this resonance because the frequency resolution only has a data point at 300Hz and 600Hz; skipping right over the 450Hz. In my experience, all these factors play in to how the listener “connects” with the system. I would strongly suggest using an EQ to help with the response. The frequency response rolls off over 16k significantly, while there are some spikes and dips in the lower ranges from 128 Hz to 800 Hz. The red line shows the final measurement where either distortion and/or compression failed. I have provided a “normalized” set of data as well. I would strongly suggest using an EQ to help with the response. Unless otherwise noted, all the data below was captured using Klippel Distortion Analyzer 2 and Klippel modules (TRF, DIS, LPM, ISC to name a few). While I think anyone in their right mind would know not to expect tons of output (not just bass; but overall volume) from a speaker this size, what you would expect is a semblance of linear frequency response. Each of the units features a four-Inch woven carbon fiber woofer with rubber surround along with a silk dome tweeter. If you can help by chipping in, I would truly appreciate it. What really impressed me about these speakers was the crispiness of the sound (even at highs) and a deep bass. Meaning, if a speaker is ideal and you tell your stereo to increase by 6dB by turning the volume knob +6dB, the output will increase by 6dB. The frequency response rolls off over 16k significantly, while there are some spikes and dips in the lower ranges from 128 Hz to 800 Hz. I purchased my sample from Amazon and it cost US $149 including Prime shipping. Micca MB42X. I'm wondering if anyone has any experience with the Dayton MK442 as a center (I know people like to purchase as pairs and use them as L/R's). Enclosure: Rear ported, matte black vinyl. The impedance of a speaker varies depending on the frequency being played, and it is normal for most 8ohm rated speakers have impedance that dip as low as 4ohms or even lower. Amplification Type. All this result in a more open, dynamic, clean, and balanced sound, and numerous customer reviews prove it. Micca MB42X Bookshelf Speakers with 4-Inch Carbon Fiber Woofer and Silk Dome Tweeter (Black, Pair) 4.6 out of 5 stars 3,835 $89.99 $ 89 . The response curve of the Micca MB42X MKIII is extremely non-linear; exhibiting as a wholly recessed midrange, a prominent bump between 1-2kHz and poor linearity above 4kHz. That’s an easy, easy decision. The speaker has a 4-inch woofer that is made from carbon fiber that helps to deliver rich bass sound. Comparatively, this Micca speaker isn’t even in the same ballpark. This speaker is quite a bit smaller than the Neumi, which I discuss in my video above, but I was optimistic about its performance based on many other past reviewers’ positive impressions. The engineers at Micca have found a way to offer great quality in terms of how the speakers sound and durability, all at an affordable price. Has no bearing on pass/fail ) 'm thinking of return the Micca MB42X a... An 85 dB sensitivity and 60Hz-20kHz frequency response to help with the frequency response graphs, CSD plots. ( approximately 0.3 meters ) little bit here Amazon affiliate link if you in. 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