Monday, April 22, 2019

Mounting a fullrange speaker without a cabinet


It sounds like an ant but it sounds nice.
It may be tiring to the ear too due to front back radiation comb filter addition subtraction effects or (drive unit reasonance) etc.


As this is written a fullrange alnico? speaker is sitting on top of table and directly connected to Sony CD Walkman headphones out on one channel.


It is firmly mounted on the table by gravity and the U shaped magnetic circuit. So inclination is about 30 degrees which is almost perfect for the speaker pointing towards listener's ear while listener is siting on a chair near table.


Sound is very nice except disadvantages just mentioned.


Less colored than the Pleiades Auratone 5C type speakers inside a carton cube box.


The speaker used is a larger diameter, 6in, Star Vox CX-612.


Can't wait to try this is stereo.


Also tried a vintage alnico? oval 4in x 7in small speaker. Very nice too. It says E 10 18/39 716.


Some of the bass in this setup comes from table vibration.


Later addition:


Stereo with 2 6in speakers sounds great, the speakers directly connected to iPad's mini headphone output.


Amazing treble and mid.


What is needed is a bit more bass.


Could this be done by cutting a wide bar like sheet of linoleum, mounting each soaker on each end somewhat like back door car radio speaker mounting.


Would linoleum vibration do the trick for extending bass wile at the same time provide an asymmetric baffle.


Since it would have the same inclination the iPad mini can be supported at the centre of this and that would be it.


Table home cinema.


Or analytic monitoring.


So far the iPad mini was supported between the 2 drive units (at the same angle). Bass increases possibly by the baffling effect (partly separating Bach and front acoustic radiation) of the iPad's mini physical presence.


An alternative mounting arrangement could be just a thin rectangular orizontal mounted wooden baffle one drive unit to the left, on to the right side and iPad at the centre. Just one or 2 small rubber feet for angled support in table. Not tried yet.


What has been tried yet is supporting the iPad mini on a glass jar in table and one drive unit to the left and the other to the right.
The brilliant bass line at 1:11 could be dustiguised:
Tocatta and Fugue in D minor - Jacques Loussier
https://m.youtube.com/watch?v=4xng_QbhHGY#


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