CHR70x example projects (lots of pictures, not much text)
April 4 Edit: Was "December/Holiday Sales Special / CHR70.2eN", but that is lomg gone. Some good content thou, so i'll rename the thread.
CHR70.2eN in silver (aka grey) or champagne (aka gold)
A set of "green" CHR-Ken playing at 7th annual VI diyFEST,
Some comments (most of these are in the CHR-70 applications thread -- a ton of designs for CHR): Nanook (and more comments in the next couple pages), TheSeeker (& here), speakrsrfun (& here ... CHR-Ken is 9 litres), Doorman
A list of some applications. Already mentioned http://www.diyaudio.com/forums/full-...on-thread.html
Lotus, double horn loaded reflex (single & double driver versions)
Maeshowe, rear mouth horn
PensilR70, damped coupler
microTowers, small ML-TL, in single, double, and single-folded versions
HT appendix to the microTowers with sealed enclosures to flesh out a Home Theatre
Wessex, medium ML-TL for 2 drivers
Mercia, large ML-TL for 2 drivers
A variety of small bass reflexes
Construction Plans List | Markaudio
P10-hifi Mark Audio Box Plan Library
Some pictures of member's CHR70 builds
CHR in 7 litre slot loaded cabinet (FR125 box)
Steve's Lotus^2 (more comments, Ian444 build)
Harebrained Double Reflex
tresch's Bass Reflex
Voldemar1 DBR (plans)
joern's 8L BR
preiter 5.5L sealed
Steve's folded halfTower
pytha2008 Black Beauty
Alan's Meashowe (more comments)
Dave, love the pics of course, I assume the top one is your pad. An army of speakers.
Can you comment on the CHR-70 'house sound' compared to the other Mark Audio drivers? Do they sound similar, or totally different?
This is quite a great price for an enabled pair of drivers BTW.
The paper cone drivers (EL70, and a prototype A6p), are further away but still of the same family.
CHR70 also works in Frugel-Horn Mk3 (seem here with removable baffle and Alpair7)
would these drivers work in the curvy changs ,i love the look of the changs if not i'll build the lotus(1 driver).
IINM, the original Spawn designs predated our introduction to the earliest of Mark's drivers, and the Chang family ranged from Suzy ( FE103E ) to full-on G Chang and Curvy sibling ( FE207E). Of the enclosure sizes in this series I'd imagine that the Brynn or Gabriel might be most suitable for CHR / CHP70 etc. I've built a couple of pairs of the little single mouth Brynn ( FE127E), and they are an easy build and certainly work, but not without limitations.
Scott can correct me on this, but the above said, there are several more recent full size double mouthed designs that are more precisely tailored to the Mark Audio series of drivers, and of the 2 that I've heard, the Maeshowe would be my suggestion for CHR70. With appropriate adjustment for driver chamber volume, it certainly wails with Fostex FE126E. I haven't heard the Lotus - which I guess you're considering it due to room considerations (front mouth or large BVR termini(?) certainly offer some placement advantages)
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