News

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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1198 Floor Standing using Purifi PTT6.5W04

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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Horn No. 1155 for RAAL 70-20XR Pure Ribbon Tweeter

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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Speaker No.1159 --- Distortion Tests and Crossover Design

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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Speaker No.1159 --- Horn Loaded 2-way -- Medium Sized Bookshelf

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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Altec 806-8A on Altec 811B Horn

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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Altec 806-8A Compression Driver

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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Altec 811B with TAD TD-2001

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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Nighthawk

Nighthawk

The blog post features the Nighthawk Front Horn design and acoustical measurements.                                 Measurements  I...
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Positive Review on E-250 Double Planar Front Horn

Positive Review on E-250 Double Planar Front Horn

E-250 (Dual BG Neo8S) Review: I was introduced to Troy Joseph Crowe through a comment made in an Audio Circle Forum which identified his integration of a BG Neo8 driver...
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ES-600 Biradial with TAD TD-2001

ES-600 Biradial with TAD TD-2001

For the original article click HERE.    In this blog I feature the TAD TD-2001 compression driver mounted to the ES-600 Biradial wood horn.  The horn featured in the post...
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ES-290 Biradial with JBL 2446H Compression Driver

ES-290 Biradial with JBL 2446H Compression Driver

In this blog post I feature a full set of measurements on the ES-290 Biradial Wood Horn with the JBL 2446H compression driver.  I then test custom carbon fiber diaphragms...
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Xkitz 2-Way Active Crossover

This blog post looks at the 2-way active crossover from Xkitz.  The Xkitz product link can be found here.   The Xkitz is a fully analogue crossover sold as a circuit board...
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ES-600 Biradial with RCF ND-850 1.4 Compression Driver

In this blog post I will be looking at the RCF ND-850 1.4 compression driver mounted to the ES-600 Biradial Horn. RCF ND-850 mounted to the ES-600 Biradial (original prototype)   ES-600...
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ES-2000 Biradial with Various Compression Drivers

Introduction  This blog post features acoustical measurement of the ES-2000 Biradial Wood Horn with the new B&C DE360 compression driver.  This horn was discussed in detail in my previous post...
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ES-2000 Biradial Wood Horn Introduction

Introduction  The ES-2000 Biradial is a new size format that takes advantage of high flare rate compression drivers that are typically used for 2kHz and above.  The small format compression...
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Making Musical Instruments Sound Natural

This blog post focuses on an important aspect to speaker measurement...Timbrel Balance.    Timbrel Balance Definition: the characteristic quality of sound that distinguishes one voice or musical instrument from another or one vowel sound from...
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How to Achieve Clean Bass

  This blog post outlines some performance criteria for achieving low distortion bass in your listening room.  These metrics are my own criteria that I've developed and represents a good...
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