Speaker Recommendation For Mini Aleph - diyAudio
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Old 30th July 2010, 12:22 AM   #1
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Default Speaker Recommendation For Mini Aleph

I have a Mini Aleph I'm using in a near-field set up for my computer. I have a few watts and want something pretty efficient under say 24" tall or so. The speakers will be about 3 feet apart with me out about 4 feet from them.

I've been reading here for months and I can follow along but I have never designed a crossover and I have no measuring equipment at all. Therefore a tried and true design someone could recommend would be ideal.

I like the idea of OB but realize it's probably unrealistic in this set up. I'm looking for >92db with as much low reach as I can get.
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Old 30th July 2010, 01:49 AM   #2
sreten is offline sreten  United Kingdom
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Hi,

One of those posts where every man and his dog would have a valid opinion.

24" is too low for floor standers and pointlessly high for standmounters.

> 92dB and as much bass as possible is contradictory, basically as the
sensistivity drops you get more bass for the cabinet volume, given your
set up optimising power versus bass excursion (goes up with sensitivity)
is an issue, as is choosing a near field versus far field design.

At 4 feet you do not need more than a few watts with most speakers.

Any quality near field design would work : Zaph|Audio - 4" Bargain Mini
If you want to go exotic get someone to model a floorstanding TL
or MLTL version, for low power real bass extension counts a lot.

I listen to 1/2 watt 2" USB speakers with pathetic sensitivity at around 2 feet
on my computer, other than no bass they are fine for normal listening levels.

/Sreten.
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Old 30th July 2010, 02:15 AM   #3
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This is my stereo, not just a computer. It's where I am at all day and the only space I have for a system. I happen to have 24" of space between the bottom of the monitors and the desk so 24" is an ok height.

I'd like to build the ultimate near field system.
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Old 30th July 2010, 12:43 PM   #4
sreten is offline sreten  United Kingdom
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Hi,

IMO something based on Linkwitz Labs Pluto design would make a near
"ultimate" nearfield loudspeaker design, but others will disagree, YMMV.

/Sreten.
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Old 30th July 2010, 01:47 PM   #5
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Now that's interesting, I never would have thought about that one. What is it that makes you think that in particular?
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Old 31st July 2010, 01:52 AM   #6
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by Jack Tupp View Post
Now that's interesting, I never would have thought about that one.
What is it that makes you think that in particular?
Hi,

Probably best to google for Linkwitz Pluto review to garner infromation.
You can find info on using other amplifiers and various modifications.

FWIW one aspect of speaker design is called "critical distance", the point
where direct sound = reflected sound. The more directional a speaker
(e.g. front horn loading) the longer this distance, the more widespread
a speaker is the shorter is this distance. This distance is essentially the
pointy where nearfield and farfield are the same.

Consequently in my estimation (and experience with my egg shaped 2"
computer speakers) the Pluto would give an experience that for more
normal speakers you would have to sit further away to get the same
sort of vista and image spaciality.

I do not agree with all the details of the Pluto, e.g. with no sub an
overdamped (the port is tuned low) vented alignment is IMO a far
better compromise than simply sealed with Q=0.5.

There is a lot of nice detail and radical thinking in the Pluto, at 4 feet
distance I cannot imagine volume could be an issue except for very low
bass, here the extra SPL capability of low tuned vented will help a lot.

I suppose you could fold the bass pipe to get under your 24" height.

/Sreten.
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Old 31st July 2010, 02:33 AM   #7
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Quote:
Originally Posted by sreten View Post
radical thinking in the Pluto
I don't know about radical... Electrohome was doing much the same in the 60s, and the precursor for Hegeman's 70s execution was done in the 50s.

dave
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Old 31st July 2010, 02:39 AM   #8
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Quote:
Originally Posted by Jack Tupp View Post
This is my stereo, not just a computer.
I was reminded again today by visitors how well these perform. Add a sub for adequate bottom (needs to be fairly extened to gel).

Click the image to open in full size.

dave
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Old 31st July 2010, 03:41 AM   #9
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Hi Dave,

Is that a type of Fonken?

I have that same T amp and ps as well. I'm thinking I like the Aleph enough to put up with the heat.
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Old 31st July 2010, 04:21 AM   #10
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uFonken yes, using FF85KeN (i've probably got the remaining supply cornered). The miniA should be a better amp.

dave
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