# Hard Data

**URL:** https://discourse.midwestaudio.club/c/hard-data/11.md

[Latest](https://discourse.midwestaudio.club/latest.md) · [Categories](https://discourse.midwestaudio.club/categories.md) · [Tags](https://discourse.midwestaudio.club/tags.md)

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## [About the Hard Data category](https://discourse.midwestaudio.club/t/about-the-hard-data-category/32)

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**Author:** [@JasonP](https://discourse.midwestaudio.club/u/JasonP)\
**Replies:** 0\
**Last updated:** [September 6, 2025, 12:09pm UTC](https://discourse.midwestaudio.club/t/about-the-hard-data-category/32 "2025-09-06T12:09:17Z")

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Hard data posts that contain, you guessed it! Hard Data! Information on testing everything from drivers to DACs.

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## [Multicomp PRO MP011860 5" aluminum cone, plastic dustcap ferrite mid-woofer with copper pole cap](https://discourse.midwestaudio.club/t/multicomp-pro-mp011860-5-aluminum-cone-plastic-dustcap-ferrite-mid-woofer-with-copper-pole-cap/821)

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**Author:** [@tktran303](https://discourse.midwestaudio.club/u/tktran303)\
**Replies:** 4\
**Last updated:** [October 9, 2026, 3:05pm UTC](https://discourse.midwestaudio.club/t/multicomp-pro-mp011860-5-aluminum-cone-plastic-dustcap-ferrite-mid-woofer-with-copper-pole-cap/821 "2026-10-09T15:05:20Z")

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This is a plastic dust cap that moves with the cone. No under spider venting, small pole vent. Despite a geometric x-max of “only” 4.4mm, the spider is quite large, with 11 corrugations. Here is the free a…

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## [Beston RT003C Test Bench](https://discourse.midwestaudio.club/t/beston-rt003c-test-bench/729)

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**Author:** [@Wolf](https://discourse.midwestaudio.club/u/Wolf)\
**Replies:** 1\
**Last updated:** [August 23, 2026, 4:19am UTC](https://discourse.midwestaudio.club/t/beston-rt003c-test-bench/729 "2026-08-23T04:19:38Z")

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https://audioxpress.com/article/test-bench-the-rt003c-point-source-ribbon-tweeter-from-beston-technology Cat is outta the bag… I still like the sound despite the HD profile. My Stances and Scott’s Indium7 have used it …

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## [Beyma 8NMFW quad](https://discourse.midwestaudio.club/t/beyma-8nmfw-quad/715)

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**Author:** [@Wolf](https://discourse.midwestaudio.club/u/Wolf)\
**Replies:** 1\
**Last updated:** [August 22, 2026, 11:08pm UTC](https://discourse.midwestaudio.club/t/beyma-8nmfw-quad/715 "2026-08-22T23:08:44Z")

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Took an average of the 4x T/S for the quad of 8NMFW and did a model. Re 5.3608 Fs 42.3280 Spl 87.2345 Qe 0.3796 Qm 8.85795 Qt 0.3639 Le 1.1259 Vas 18.3616 Bl 13.7778 Mms 50.7498 Sd 214.08 as my normal measurem…

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## [Measuring amps, preamps, and speakers with REW](https://discourse.midwestaudio.club/t/measuring-amps-preamps-and-speakers-with-rew/624)

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**Author:** [@4thtry](https://discourse.midwestaudio.club/u/4thtry)\
**Replies:** 14\
**Last updated:** [June 2, 2026, 2:52am UTC](https://discourse.midwestaudio.club/t/measuring-amps-preamps-and-speakers-with-rew/624 "2026-06-02T02:52:24Z")

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This will be a thread for people to share their experiences measuring amplifiers, preamplifiers, and speakers using the REW software package. Good experiences and bad. How did it go? Which REW version did you use? …

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## [DATS LA data dump](https://discourse.midwestaudio.club/t/dats-la-data-dump/291)

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**Author:** [@jr-mac](https://discourse.midwestaudio.club/u/jr-mac)\
**Replies:** 41\
**Last updated:** [November 21, 2025, 2:53am UTC](https://discourse.midwestaudio.club/t/dats-la-data-dump/291 "2025-11-21T02:53:58Z")

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Infinity 8” CMMD woofer, OEM in Interludes.

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## [.frd and .zma files](https://discourse.midwestaudio.club/t/frd-and-zma-files/262)

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**Author:** [@danny](https://discourse.midwestaudio.club/u/danny)\
**Replies:** 2\
**Last updated:** [November 2, 2025, 11:24pm UTC](https://discourse.midwestaudio.club/t/frd-and-zma-files/262 "2025-11-02T23:24:02Z")

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I have a couple of 1950’s era Klipsch Shorthorns. I want to build new 3-way crossovers using online crossover design software. The first thing they all want is .FRD and .ZMA files. I don’t know how to get them for these …