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News
Apr. 02, 2021
Seas FA22RCZ 8" Fullrange Driver
This blog post features a full test on the Seas FA22RCZ 8" fullrange driver. Information on this driver can be found here. Why the Seas FA22RCZ? Affordable Made in Norway...
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Mar. 20, 2021
Mid-Bass Horn Cabinet No.1274
In this blog post I would like to feature full objective test data on the Mid-Bass Horn Cabinet No.1274. 1274 includes the following features: Dual B&C 12PE32 per cabinet 109dB...
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Mar. 15, 2021
JBL 2265G-1 versus RCF L15-554K
In this blog post I would like to compare the JBL 2265G-1 against the RCF L15-554K. I will be using objective test data using near field measurements. Why this comparison?...
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Mar. 06, 2021
Eton Versus Dayton --- 12" Woofer Comparison
In this blog post I would like to compare two woofers and provide both objective and subjective test data. I would also like to extend my testing to include a...
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Feb. 15, 2021
Speaker System No.1349
Speaker System No. 1349 is a system design study that continues on from the lessons learned on the Nighthawk speaker. Generally the Nighthawk and 1349 speaker (featured in this blog post)...
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Jan. 31, 2021
Sabourin Horn Plans
In this blog post I would like to introduce a new DIY front horn that continues on from the Summer Rain horn. The Sabourin Horn is simpler to make and...
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Dec. 21, 2020
Speaker No. 1198 Measurements
This blog post features a full set of acoustical measurements on the No.1198 Speaker. I also provide my subjective listening impressions. A full description of this speaker can be found...
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Nov. 22, 2020
B&C DCX-464-16 versus Lamar M2-16 Field Coil Compression Driver
In this blog post I compare the B&C DCX-464-16 against the Lamar M2-16 Field Coil Compression Driver. For this comparison I'm using my own ES-290 Biradial wood horn which loads down...
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Sep. 27, 2020
B&C DCX-464-16 with ES-600 Biradial Horn
This blog post features the new B&C DCX-464-16 1.4" Coaxial Compression Driver. I will show some objective test data and provide feedback on my subjective listening impressions. For this test...
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Sep. 20, 2020
Purifi PTT6.5 Test Results in 1198 Transmission Line Enclosure
This blog post features the objective test data for the Purifi PTT6.5 woofer mounted in my own transmission line enclosure design. 1198 Floor Standing Transmission Line Frequency Response Measurements ...
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Jul. 20, 2020
Revised Distortion Tests For RAAL 70-20XR on 1155 Horn
Please note the PDF version of these test results can be downloaded Here. From further investigation it was discovered that a potential cause of the low output of the RAAL...
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Jul. 19, 2020
1198 Floor Standing using Purifi PTT6.5W04
Continuing on from the 1159 stand mount speaker is a new floor standing design. The 1198 floor standing speaker has the following changes compared to the 1159 stand mount... Purifi...
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Jul. 04, 2020
Horn No. 1155 for RAAL 70-20XR Pure Ribbon Tweeter
Horn No.1155 using ES-Biradial Geometry for RAAL Ribbon Tweeter This blog post features a custom horn that I designed and built for a customer that uses the RAAL...
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Jun. 26, 2020
Speaker No.1159 --- Distortion Tests and Crossover Design
Continuing from my previous blog post on Speaker No. 1159 I continue my comparison against a non-horn loaded test baffle. I compare distortion sweeps at high SPL and look at why 1159...
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Jun. 26, 2020
Speaker No.1159 --- Horn Loaded 2-way -- Medium Sized Bookshelf
Introduction I normally focus on horn speakers however I've been wanting to develop a medium sized bookshelf speaker that uses technology from my flagship products. I still wanted the speaker...
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May. 15, 2020
Altec 806-8A on Altec 811B Horn
This blog post features a full set of measurements on the Altec 806-8A compression driver mounted to the Altec 811B Horn. For interest's sake please see my other blog posts...
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May. 15, 2020
Altec 806-8A Compression Driver
This blog post features the Altec 806-8A compression driver mounted to the ES-600 Biradial using a 1" throat. I purchased a pair of these drivers used to see how...
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May. 15, 2020
Altec 811B with TAD TD-2001
This blog features a full set of measurement on the Altec 811B biradial horn. My plan was to test this horn with a pair of Altec 806-8A compression drivers however...
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