More Nearfield Questions

[MuaDibb]

I've read several posts about building computer speakers, and nearfield listening. Several people recomended using a fullrange speaker because of the difficulty in blending the tweeter and woofer.

Would you have the same difficulty blending a woofer coupled with a fullrange? I guess what I'm asking, is it solely dependent on proximity? or does frequency have something to do with it?

I know I can build one of the several fullrange diy's out there like the one on Zaph's site and add a small sub, but I would like it all in one cabinet. I was thinking a small M8ta clone with a 3" fullrange where the tweeter would be and a small woofer below to fill in the low end. Would this be a viable solution for nearfield?

If this isn't insane could I get some recomendations for a small woofer that could get to or at least close to 80hz in a small sealed enclosure?

[fjhuerta]

Due to the size of inductors at said crossover point... or the need for an external amplifier... I'd go for a normal two way. Just MHO.

[Jed]

How about one of those SEAS coaxials? Might be nice for a nearfield monitor without integrations issues.

[JonMarsh]

I've read several posts about building computer speakers, and nearfield listening. Several people recomended using a fullrange speaker because of the difficulty in blending the tweeter and woofer.

Would you have the same difficulty blending a woofer coupled with a fullrange? I guess what I'm asking, is it solely dependent on proximity? or does frequency have something to do with it?

I know I can build one of the several fullrange diy's out there like the one on Zaph's site and add a small sub, but I would like it all in one cabinet. I was thinking a small M8ta clone with a 3" fullrange where the tweeter would be and a small woofer below to fill in the low end. Would this be a viable solution for nearfield?

If this isn't insane could I get some recomendations for a small woofer that could get to or at least close to 80hz in a small sealed enclosure?

If you're going for a desktop nearfield, I'd consider some of the Aurasound NS3-193-8A, or two, maybe with one of their small neodymium tweeters (think Madisound). It really all depends on how small you need- if I was doing this, of course I'd have to go overboard, and use this for the mid/highs, and a separate mini-subwoofer, like one of the Tangband's or HiVi's designed for that. Complexity and cost become a problem for a one off, unless you're into rolling your own active filters. Inductors for low midrange crossover points with passive filters are BIG!

[nayr]

If you're going for a desktop nearfield, I'd consider some of the Aurasound NS3-193-8A, or two, maybe with one of their small neodymium tweeters (think Madisound).

A small MTM with these look like fun. Zaph has a two-way design I was looking at for a bedroom/nighttime speaker:

http://www.zaphaudio.com/audio-speaker20b.html

[JonMarsh]

Sitting ON a desk or mounted on a wall, that might work quite well. Zaph's design would be fairly easy to adapt to an MTM. Or just use as is!

[MuaDibb]

Thanks for the replies.
qoute :

If you're going for a desktop nearfield, I'd consider some of the Aurasound NS3-193-8A, or two, maybe with one of their small neodymium tweeters (think Madisound).

this was my original idea for a tmm.



If you used two of the aurasound would the crossover be a two-way? I had read that a 2.5 probably wouldn't work very well in a nearfield application.

[cjd]

Center to center spacing would be too large for that to be a 2-way. Really should keep it a MTM topology.

[opt-e]

I'd love to see a MTM with these drivers! :T

[TacoD]

How about one of those SEAS coaxials? Might be nice for a nearfield monitor without integrations issues.

Or the Thiel coax, (only 699 euro a piece ).

[Jed]

Someone mentioned those Thiel units didn't do too well in the HD tests, but they seemed to be popular in some projects of the German Hobby Hifi magazines.

[MuaDibb]

Thanks for the replies. I think I'll try the Zaph project. However, I would like to change the box. It looks like the baffle width would be about 4.5 inches. Could anyone confirm? Also, I couldn't find the volume he used, it seems to be 2-3 liters?

Sitting ON a desk or mounted on a wall, that might work quite well. Zaph's design would be fairly easy to adapt to an MTM.

If someone could throw out a suggested mtm x-over and box volume, I wouldn't mind trying it and taking some measurements....... :lol:

I'd love to see a MTM with these drivers!

Thats the spirit!

[ThomasW]

http://www.zaphaudio.com/audio-speaker20a.html

[Operandi]

It's not final yet (hopefully will be soon) but for my PC speaker project I think I'm going with a 2.5 TMM version of Microbe with the RS28 tweeter.

Shown below is the 2.5 MTM version with the popular Seas 22TAF/G tweeter. Roman the designer has been very helpful in regards to modifying his design as was as offering good general advice.