hi all,
I'm building a pair of bookshelf speakers to go with a sub-woofer in a 2.1 design.
The woofer and tweeter are high quality car audio component speakers that may also be mounted co-axially.
I have a few questions that I would appreciate help with:
1. Would there be any advantage to mounting the tweeter co-axially rather than conventionally above the woofer in terms of imaging or sound stage or anything else? Any disadvantages?
2. How do I balance the roll off of the bookshelf speakers with the subwoofer? I understand that bass below 80 Hz or so in non directional and therefore a summed mono subwoofer could be used with satellite speakers without affecting the sound stage too much, does this mean that I have to roll off the main speakers at 80 Hz or below?
3 following on from 2. does that mean I have to tune the box, assume ported, at that 80Hz figure or should the box be tuned to something else, if so why?
To give some numbers the T/S parameters for the driver in question are:
Re: 3.278
Fs: 66.16
Qes: 0.765
Qms: 3.284
Qts: 0.621
Vas: 0.174 ft^3
CMS: 0.00064119
MMS: 9.014655
BL: 4.007293
The driver seems best suited for a ported box and the sub will be a JL audio 10w3 or a 12w3 depending on what seems the best "fit", these work well sealed or ported so I am easy.
I appreciate that these are basic questions and I am grateful for any assistance.
I'm building a pair of bookshelf speakers to go with a sub-woofer in a 2.1 design.
The woofer and tweeter are high quality car audio component speakers that may also be mounted co-axially.
I have a few questions that I would appreciate help with:
1. Would there be any advantage to mounting the tweeter co-axially rather than conventionally above the woofer in terms of imaging or sound stage or anything else? Any disadvantages?
2. How do I balance the roll off of the bookshelf speakers with the subwoofer? I understand that bass below 80 Hz or so in non directional and therefore a summed mono subwoofer could be used with satellite speakers without affecting the sound stage too much, does this mean that I have to roll off the main speakers at 80 Hz or below?
3 following on from 2. does that mean I have to tune the box, assume ported, at that 80Hz figure or should the box be tuned to something else, if so why?
To give some numbers the T/S parameters for the driver in question are:
Re: 3.278
Fs: 66.16
Qes: 0.765
Qms: 3.284
Qts: 0.621
Vas: 0.174 ft^3
CMS: 0.00064119
MMS: 9.014655
BL: 4.007293
The driver seems best suited for a ported box and the sub will be a JL audio 10w3 or a 12w3 depending on what seems the best "fit", these work well sealed or ported so I am easy.
I appreciate that these are basic questions and I am grateful for any assistance.