Markaudio CHP-70-P Gen2 Bass Reflex (7 Liters) As promised, this post is about the Markaudio CHP-70-P Gen2 in a bass reflex. The enclosure is the same as in the 7… Read more >
michael chua
November 15, 2023
Drivers Evaluation, HIFI DRIVERSCHP70, Full Range
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Markaudio CHP-70-P Gen2 Frequency Response Measured Frequency Response The frequency response above is with the CHP70 mounted onto a sealed box of 7 liters. Baffle width is 8″. Generally, the… Read more >
michael chua
November 12, 2023
Drivers Evaluation, HIFI DRIVERSCHP70, Full Range
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Wren-DQ In this version of the Wren, I replaced the Peerless BC25SC08-04 with a titanium dome tweeter, a DQ25SC16-04. This is the most convenient tweeter to use because they share… Read more >
michael chua
April 28, 2020
ProjectsCHP70, DQ25SC16, Markaudio, Peerless, Wren
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Wren-BC In the Wren-BC, the Markaudio CHP-70 now has a companion, a Peerless BC25SC08-04 tweeter for the treble. That will elevate this full range to a higher level. The first… Read more >
michael chua
April 28, 2020
ProjectsBC25SC08, CHP70, Markaudio, Peerless, Wren
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Wren – a CHP-70 Bass Reflex In all my previous posts on the CHP-70, it was with a 1.7 liters sealed box. What I wanted to find out then was… Read more >
michael chua
April 26, 2020
ProjectsCHP70, Markaudio
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Markaudio 4″ CHP70-P GEN2 Thiele & Small Parameters Thiele & Small Parameters (before Break-in) Ported Box=7 liters • F3=57Hz (DATS x0.75 T/S) Sealed Box=7 liters • F3=112Hz (DATS x0.75 T/S)… Read more >
michael chua
April 15, 2020
Drivers Thiele & Small, HIFI DRIVERSCHP70, Full Range, Markaudio
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why the TN28 It all has to do with using a 1st order crossover. I initially used the Audax TW010E1 because all it needed was a 2uF capacitor. With that,… Read more >
michael chua
March 15, 2020
ProjectsCHP70, HiVi, Markaudio, Time Aligned, TN28
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Baffle Step Compensation I saved the baffle step compensation (BSC) for last because I wanted to see whether I can do without it. Presently, the CHP-70 with the TW010E1 are… Read more >
michael chua
March 10, 2020
Drivers Thiele & Small, HIFI DRIVERSAudax, Baffle Step, CHP70, Markaudio, Time Alignment, TW010E1
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Time Aligning the CHP-70 with TW010E1 There are different ways to time align drivers. Most common is to either move the woofer forward by using a step or to tilt… Read more >
michael chua
March 8, 2020
Drivers Thiele & Small, HIFI DRIVERSAudax, CHP70, Markaudio, Time Alignment, TW010E1
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why the Audax TW010E1 Because this is one of the few tweeters I have that works superbly with a 1st order filter. The other is my Morel CAT 378 which… Read more >
michael chua
March 4, 2020
Drivers Thiele & Small, HIFI DRIVERSAudax, CHP70, Markaudio, TW010E1
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