Doesn’t appear to provide HP filtering for whatever drivers are being used for the upper 8 or so octaves, which I think would defeat much of the benefit of this approach when using full range drivers such as the Mark Audios, or any of the favourite flavours
It sounds quite limited and looks to be aimed at those with a single subwoofer not a pair of helper woofers in a WAW.
dave
dave
Harmonic distortions are common. Some amps have crossover distortion, anything else different?
Amplifiers tend to have more (annoying) higher harmonics in the distortion profile and they are often not decreasing with order.
dave
dave
They look very unique, I'm surprised the little amp is a good match for those 🙂
I believe Dave and Scott are working on some plans at the moment, not sure when they'll be available. I like the look of your system, but for my first proper DIY speaker I want to stick to something designed by Dave and Scott as I do trust they'll make something great.
What's the reason you retired your 7ms? I remember reading your thread a while back before I purchased them.
The 1st one is at the initial delivery stage, with more to be added as required by people executing it. Feedback will also be folded in.
We are now starting work on a larger one.
dave
They are rarely published by manufactures, one will often see the spectrums in decent external measurements. Also there is growing eveidence that the phase of the distortion components.
Geddes has done blind studies that suggest that the distortion we measure in loudspeakers is of little value (not verified by a second independ study, often the case with audio experiments). That does not say that speaker distortion is unimportant just that we ar elooking in the wrong place.
dave
Geddes has done blind studies that suggest that the distortion we measure in loudspeakers is of little value (not verified by a second independ study, often the case with audio experiments). That does not say that speaker distortion is unimportant just that we ar elooking in the wrong place.
dave
The Parasounds are surprisingly good and in domestic situations you need surprisingly little power. I ended up getting a Behringer Inuke in the end to future proof tinkerings with sealed subs.
Well, the reason I stopped using them was because I was already planning to graduate to a tweeter/mid combo using the 7MS. The limitations, at least for me, had started to become annoying for me. Mainly the limited sweet spot. My wife and I sit at opposite ends of our sofa when we watch films and the imaging was off so I wanted to start looking at horn/waveguide systems where I had more control of this. Sadly one day when I was calibrating a USB soundcard I accidentally left the 48v phantom mic power on and it fried the 7MS voice coil. I still have it's untouched sibling for some future mono project. I took it as a blessing in disguide to go on a build a new mid/tweeter design. They aren't robust drivers so be careful - this is not a bad thing, just an observation.
Unless the listening position is fixed the sweet spot will be narrow. This isn't a dig at wide band drivers but it is something I had not considered, espcially when I went from the Alpair 6M to the 7MS.
Dave, Scott, will you be providing crossover info and/or correction notes for these builds?
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The current document has 10 pages in the XO section and we have already identified some tps to be added to that part of the document. As feedback comes in on the XOs it will be folded back into the document.
dave
I see, that's a shame that one of them was fried. I'll be extra careful after heaing that. The speakers are mainly for me to listen to music so I didn't mind going with the compromise. I do find that the sound doesn't change too much when I move around since I moved the speakers further back in the room. It doesn't seem to be any worse than a normal two way. Before it did when I was listening closer, though. I've never really found any speakers that sound great off axis really, but I've never heard anything exotic. The main issue for me is the lack of power/bass which I did expect, but initally I was only going to have these on my desk so I didn't think it'd be an issue. That's why I want to beef them up a little with some woofers 🙂
Is this document available for public viewing and will it be updated with all the future plans or are the bigger boxes going to be separate?
I completely understand. I rescanned the thread but can't see a reference to the cabs do you have them in now?
I will drop you an email
They're currently in the pensil box for the 7ms. They're a bit rough, I bought them from someone else as they are, so I'm not sure if that affects the sound in any way. The measurements seem to be all okay, though. I planned to get them into a small bookshelf and use them nearfield initially, but they sat off for a year and now I've been listening to them again. I've been comparing them to a few different two way standmounters and it's been a bit of a rough ride for the alpairs, unless it's something very simple playing. Maybe I'm expecting too much, I'm not sure. In regards to the sweet spot again, for me, moving up and down seems to make a big difference in the sound
Decent SQ can be achieved in a myriad of ways, I suppose. I no longer enjoy "loud", even if it is clean, so my need for a large, monster WPC of an amp falls away.
It's all a trade-off; in order to have this (DSP, all digital signal path through to speaker terminals, wireless connection to music source) maybe you give up that (signal cable, tube, capacitor rolling, solid looking and nicely machine finished, large, heavy visually integrated equipment stack).
The Lii is a 97 db efficient driver, so I only need a couple-few watts for normal listening. The Zoudio can drive well over 10W into it while remaining in its minimal distortion area of operation.
It was Dave's suggestion of power on the order of 10W for the "top" driver that caught my eye.
I'm a bit jealous you've found something so useful for you for such a low price. I'm going to go for something with a bit more power/less distortion just for the flexibility of using it with any other speakers, plus I'm using quite a powerful amp at the moment so a little worried about going down in power.
I was wondering if anyone has any experience with the NC122mp, been reading a lot about ncore amps but have't really seen much on this one. I was thinking of buying one of these: AUDIOPHONICS PA-S125NC XLR Class D Stereo Amplifier NCore 2x75W 8 Ohm - Audiophonics and then I can purchase another when I need the 3rd and 4th channels.
I was also wondering if anyone could recommend me any decent preamps that keep costs down, £200 at most is preferable. I've only ever had integrated amps before so I'm not really sure how good a preamp can be for that much. I've seen some pretty expensive stuff though