Hi,
my old HT system died after 18 years, it was used as a 2.1 system with 2 (almost) subs built with a Dayton DC-250.
They worked very well as subs with plenty of bass so I never had the need to replace them with a "real" sub speaker.
I would like to build a 2 ways loudspeaker to "join" with the 2 existing subs.
Since I'm not interested to build an HT system, I bought a Yamaha A-S301 that is equipped with a subwoofer pre-out (active low pass at 90 Hz).
So...the 2 DC-250 will be driven by an amp that I built some years ago (a project of Rod Elliott) connected to the "subwoofer out" of the A-S301 and the other "2 ways" would be driven by the power out of the A-S301.
The A-S301 doean't include an active high pass filter so the power out where the "2 ways" would be connected is not filtered.
Now the question....for the "2 ways" I already have a couple of TB W4-1337SDF (full range): in your opinion could they be used as a midrange (they should cross the woofer around at 100/120 Hz I think) and coupled with a tweeter?
The "final" configuration for the single channell should be:
Could that work on paper?
I'm open to any suggestion.
Thanks
my old HT system died after 18 years, it was used as a 2.1 system with 2 (almost) subs built with a Dayton DC-250.
They worked very well as subs with plenty of bass so I never had the need to replace them with a "real" sub speaker.
I would like to build a 2 ways loudspeaker to "join" with the 2 existing subs.
Since I'm not interested to build an HT system, I bought a Yamaha A-S301 that is equipped with a subwoofer pre-out (active low pass at 90 Hz).
So...the 2 DC-250 will be driven by an amp that I built some years ago (a project of Rod Elliott) connected to the "subwoofer out" of the A-S301 and the other "2 ways" would be driven by the power out of the A-S301.
The A-S301 doean't include an active high pass filter so the power out where the "2 ways" would be connected is not filtered.
Now the question....for the "2 ways" I already have a couple of TB W4-1337SDF (full range): in your opinion could they be used as a midrange (they should cross the woofer around at 100/120 Hz I think) and coupled with a tweeter?
The "final" configuration for the single channell should be:
- tweeter (driven by the A-S301)
- TB W4-1337SDF as midrange (filtered with the tweeter through a passive crossover in the range 100-3000, driven by the A-S301)
- DC-250 (subwoofer out of the A-S301 cut at 90 Hz 12dB/oct.)
Could that work on paper?
I'm open to any suggestion.
Thanks
W4-1337 SDF in a 1 litre sealed cabinet stuffed (approx. Qa=15; Ql=15) with damping would give you -6dB x/o point at 125Hz, the same for an active 90Hz subwoofer LP filter (Q=0.707; -3dB 90Hz, -6dB 125Hz). At 15W of input power this driver would move no more than 2.5mm. This calculation does not include dcr resistance of the passive LP filter, yet to be employed.
So the answer to your question is yes, it could work.
So the answer to your question is yes, it could work.
Many of them could be put to good use. You have probably heard rules of good speaker design, a higher priority than tweeter model. Measurements are essential and the way graphs overlap makes a difference. The next best thing is simulating, should you not be prepared for measurements. If I were you, I would likely try a 0.75" tweeter size and plan a 3.5-4 kHz x/o point, kind of a no brainer x/o point for a typical tweeter, Fs being an octave or more, lower than that. Larger is alright too.