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 varied it between 85-90dB, occasionally going up to the mid 90’s to see what the output capability was. In a poll I found most listen to music in this range. Realistically, 90dB is loud for long-term listening volume and I find most overestimate their listening volume until an SPL microphone is used to determine the actual level.

Designed for the budget-conscious music lover who wants a pair of simple, affordable, yet great sounding speakers. For these limited circumstances it has been found that a usefully accurate Predicted In-Room (PIR) amplitude response, also known as a “room curve” is obtained by a weighted average consisting of 12 % listening window, 44 % early reflections and 44 % sound power. At very high frequencies errors can creep in because of excessive absorption, microphone directivity, and room geometry. These discrepancies are not considered to be of great importance. The reference plane in this test is just below the tweeter, per the manufacturer. A single RCA input was used and the volume was set to default. No grille was used and the ports were open (not stuffed).This test will consist of the following four (4) SPINORAMA cases and then I’ll provide more in-depth results of the fourth option. Read the titles of the graphics to know what case you’re looking at. All, of course, have the corrected tweeter polarity. As stated in the Foreword, this written review is purposely a cliff’s notes version. For more details about the performance (objectively and subjectively) please watch the YouTube video. DSP suggestions However, when possible, it is always best to demo speakers in your own room. Not simply because of subjective performance. But because of other factors such as aesthetics, pride of ownership, etc. In my experience, all these factors play in to how the listener “connects” with the system. A good shop or manufacturer understands this and allows buyers to try items out at home before purchasing or they offer a reasonable return policy. If you question the performance and can demo the speakers in your own home, I suggest you take advantage of the opportunity.

Max SPL for 80Hz to 20kHz is approximately 93dB @ 1 meter. The compression threshold was exceeded above this SPL. Measurements are compliant with latest speaker research into what can predict the speaker preference and is standardized in CEA/CTA-2034 ANSI specifications. Likewise listening tests are performed per research that shows mono listening is much more revealing of differences between speakers than stereo or multichannel. Mic placed about 0.50 inches from each drive unit and port. While I tried to make these as accurate in SPL as I could, I cannot guarantee the relative levels are absolutely correct so I caution you to use this data as a guide but not representative of actual levels (measuring in the nearfield makes this hard as a couple millimeters’ difference between measurements can alter the SPL level). Got it? Good.

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This test will consist of the following four (4) SPINORAMA cases and then I’ll provide more in-depth results of the fourth option. Read the titles of the graphics to know what case you’re look The Early Reflections curve is an estimate of all single-bounce, first-reflections, in a typical listening room. Early Reflections Directivity Index (EPDI): is defined as the difference between the listening window curve and the early reflections curve. In small rooms, early reflections figure prominently in what is measured and heard in the room so this curve may provide insights into potential sound quality. Note that you can get part of the way there by using the rear HF control and boosting a few dB (per listening tests and measurements). Once there, you do have good sound without having to deploy EQ.