Home Speaker Asylum

General speaker questions for audio and home theater.

Thanks I too would prefer to use parametric Eq, but the 1/3rd eq'rs were free

before servicing costs, and I am on a quite limited budget.

Smallish room and near-field distances. QUADs at about 1/3rd from the 'front wall' and angled in to give a 'cozy' two-person-wide listening seat. Side walls into those front corners will contain two large solid timber bookshelves full of music books magazines, scores, librettos, and audio mags.

Immediately behind the QUADs will be the existing large tall fabric covered diff-sorber panels. To absorb some of the back-wave from the QUAD's slight inward angling.

I will stick with asymmetric odd order slopes, and a stereo feed - to an arc of 4 subs at the same distance from us under the QUAD 63s, and just outside their inner edges.

The asymmetric crossover slopes and frequency (150Hz) will allow me to play the system a good deal louder than a lower frequency would, while retaining some of the 63s bass clarity.

I understand that it is more suitable to omnipole / box subs, when added to dipoles.

And, I will at least have time coherence overall, and retain time and phase coherence from the QUADs.

I will be using a pair of spherical enclosure (8"2-ways 35Hz) and a pair of Jamo 3-ways (<30Hz) under the 63s and will be able to do a lot of learning.

It's our L-shaped lounge-dining room and is not exactly 'mine'. So, with the final array I may end up putting the two inner subs (tall Rbs) on their sides / on rollers, for when I'm not listening. Thus leaving a passage-way for guests.

I've had a pair of 63s run FR up on stands in this room for a few months, so I know that this positioning will work very well, and the thirds spacing won't hurt with the subs, either.

I am hoping that the swarm array will fill in some of the shallower notches and dips, and smooth out the peaks a bit.

Putting the movable RBs ports and drivers up top may also help with smoothing.

We shall see.

I expect it will be < a year until I have settled on positioning and finished building the three subs, making 4 with the Rb sub I already have.

In the longer term I will either buy / build two mono bass-range 10-150Hz parametric equaliser boxes. My learning and RTA graphs will tell me how many FR range |<->| and Q knobs I will need, except below 30 Hz.

OR I'll go with FR DSP and room Eq.

I'm not yet persuaded that DSpeaker/s single clever little box is transparent enough. Even WITH a dedicated high-end ADC (a kit of course) after the analogue sources' pre-amp. High-end commercial ADCs are not common.


Tim Bailey

Skeptical Measurer & Audio Scrounger

Edits: 05/13/17 05/13/17 05/13/17

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  • Thanks I too would prefer to use parametric Eq, but the 1/3rd eq'rs were free - Timbo in Oz 00:21:45 05/13/17 (0)


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