Has anyone had any experience with adding a hf CD/horn to a Markaudio A10p driver? I don’t want to use a crossover but I’m a noob and unsure if that’s necessary or not? I was considering using the B&C 110 or faital pro 107r & Faital Pro STH100.
Any recommendations suggestions advice is greatly appreciated.
Amplifier is 7w SET with 1ohm output impedance
Any recommendations suggestions advice is greatly appreciated.
Amplifier is 7w SET with 1ohm output impedance
A crossover for the Horn will be needed at a minimum.
Adding any tweeter to a FR is fraught with issues due to the large separation (when measured in wavelengths) of the transducers. If the FR does not have a HP it can get even worse. All the issues of a 2-way but given the usually higher XO frequency, worse.
If you want to add some sparkle to the A10p’s “vintage” top, try a rear, or up firing tweeter first.
dave
Adding any tweeter to a FR is fraught with issues due to the large separation (when measured in wavelengths) of the transducers. If the FR does not have a HP it can get even worse. All the issues of a 2-way but given the usually higher XO frequency, worse.
If you want to add some sparkle to the A10p’s “vintage” top, try a rear, or up firing tweeter first.
dave
The same issues exist, but this combo, as to the CD, has the advantages of similar voicing, dispersion, and an even wider range of XO possibilities. Smaller keeps the drivers closer so moves problams up in frequency. Using A10p as a bass driver probably suggests A5.2/3 or on the cheap CHN-50. XO between 250-3k or even higher.
The CHN-50 would give you the opportunity to play around with the concept for cheap. And if it doesn’t work out, add a couple 2.5 litre boxes and you have a pair of small monitors with outstanding value for the dollar.
Once you are crossing low enuff you have to consider a dedicated midwoofer, as Allen has suggested. But cohesivness of the voicing of the drivers becomes more of a potential issue. We ran into this with our 2 (simialr, but quite different) WAWs with A7.3, the one with the A12pw was more seemless thru the XO and over the entire range. With the other midwoofers it was a bit more disconnected. (But they have other advantages so they will end up in tyhe main room soon — need to install new midTweeters.
But assuming you are already listening to the A10p, different midWoofers defeats the purpose.
Unless you want to do a few excuses rock & roll system with a top end that won’t bite your head off. (swap the taller A10 midTL inbetween the 2 big Mar-Kens (good luck finding A12pw)
dave
Hi Allen,
I should have given more details, you’re exactly right in there is no benefit using a FR, there are two reasons I’m attempting/contemplating the idea;
1, I’ve already built the 10p’s and trying to build on that platform.
2, I saw a CD being used with a CHR120 on one of Shinjitsu Audio’s designs, from what I can see they use some form of BSC, and cap/resistor to adjust the level of the CD….. I might be wrong tho..!!
I do like the 10p’s, very much but just wanted to add a little something that I feel is missing. So a hf CD crossed much higher just to pick up the from where the 10p starts to roll off, add a little air and sparkle.
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It seems to me that your intended application is of the kind that is usually tuned by ear. There are many reasons to do and not to do certain things which we could discuss, if indeed we should in this case. In that respect you'll probably want to try various simple capacitors on the tweeter, and maybe inductors on the woofer. Resistors (an L-pad is preferred to simplify the impedance) will most likely be necessary on the CD. This project may lead to other things.
Right, it's historically referred to as CD horn EQ, so a shelving filter with a bypass cap (RLC) to let the extreme highs through to 'taste'
.A two way speaker is the ultimate example of mediocrity. Good and poor recordings sound ‘ok’ as the critical hope midrange is smothered with a blanket of phase anomolies……..mix engineers LOVE a good two way……their favorite flavor of ice cream that everyone can enjoy…..but nobody writes home about. If I’m a purist as you suggest who prioritizes transparency, i’m looking for one driver to cover 250hz to 10k…..I’m sitting in the nearfield and I don’t worry about the off axis issues associated with larger full range drivers.
Well I listen on-axis* and need low40-mid10k well covered and flat from midrange up. Of my hoard(s) there might be a couple single-cone fullrange (with notch filter) but a dozen two-cone combo (counting whizzer) that come close enough to satisfy (me). I want lifelike articulation/precise micro-dynamics and I'm highly allergic to discernable resonances and metallic/hard-sounding trebble. Three transducers bring into play vintage alnico drivers (100-10k) which still sound the most beguiling (to me).
*p.s. I listen on-axis partly because the speaker response is repeatable, whichever pair I put up for a listen (sometimes having to knock up a filter based on my notes), then take down afterwards.
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