The review on this website is a brief overview and summary of the objective performance of this speaker. It is not intended to be a deep dive. Moreso, this is information for those who prefer “just the facts” and prefer to have the data without the filler.
Read moreThe review on this website is a brief overview and summary of the objective performance of this speaker. It is not intended to be a deep dive. Moreso, this is information for those who prefer “just the facts” and prefer to have the data without the filler.
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The Purifi Audio PTT4.0W04 is a long linear throw 4-inch midwoofer which costs about $580/pair USD. It has so much science baked in to its design that it makes my mind hurt so rather than try to pretend I understand it all, I’ll just redirect you toward the manufacturer’s website or you can view and purchase them from Madisound if you’d like.
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Per Madisound:
SB Ceramic cones consist of an aluminum/ceramic dual layer cone. Ceramic provides a very hard and robust surface with improved sonic properties and cosmetic appearance.
The ScanSpeak Illuminator 7" Paper Cone Woofer 18WU/4741T-00 features the following:
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The Revel Performa F226Be is a “compact” floorstanding 3-way loudspeaker from Revel’s PerformaBe lineup featuring (2) 6.5-inch midwoofers, a single 5.25-inch midrange and a 1-inch Beryllium dome tweeter on a waveguide. This speaker retails for $3500 USD/each ($7k USD/pair).
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This speaker comes to us from the mind of fellow DIY’r and speaker builder, Rick Craig of Selah Audio. You can find the manufacturer’s information here but I have provided some snippets below:
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Before I dive in I want to note that this is a dual voice coil (DVC) woofer with dual 3.2 Ohm coil configurable in parallel or in series. I have tested and provided the T/S parameters with the coils wired in series and also in parallel. However, based on a poll I created on my Facebook page where I asked if people prefer to run a DVC woofer at a higher or lower load where over 80% of the replies indicated “higher load”, I only tested the woofer at the higher series load of 6.4-ohm nominal for frequency response. However, the linear excursion limits are practically the same between the two sets (the Bl, Cms, and Le curves do not change) and, thus, I only provide the results of the series testing.
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Before I dive in I want to note that this is a dual voice coil (DVC) woofer with dual 2 Ohm coil configurable in parallel or in series. I have tested and provided the T/S parameters with the coils wired in series and also in parallel. However, based on a poll I created on my Facebook page where I asked if people prefer to run a DVC woofer at a higher or lower load where over 80% of the replies indicated “higher load”, I only tested the woofer at the higher series load of 4-ohm nominal for frequency response. However, the linear excursion limits are practically the same between the two sets (the Bl, Cms, and Le curves do not change) and, thus, I only provide the results of the series testing.
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Note: These speakers are designed specifically for car audio use and come with a kit of mounting gear such as adapter rings, grilles and additional installation hardware. This review is focused only on the performance aspect and does not consider the “install” aspect as it relates to the provided hardware.
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