Hi ... this Voigt is going to be a <200hz sub.
Vas 107 l so box will be big at 3.8 cu ft. Length 72" should be sufficient. Fs 42hz, Qts 0.19.
Main concerns are port size and stuffing. I'm not looking for earthquake bass as apartment living is not good to rattle the neighbors.
Any suggestions will be appreciated.
Zene
Vas 107 l so box will be big at 3.8 cu ft. Length 72" should be sufficient. Fs 42hz, Qts 0.19.
Main concerns are port size and stuffing. I'm not looking for earthquake bass as apartment living is not good to rattle the neighbors.
Any suggestions will be appreciated.
Zene
Hello,
In the link below you find one model for TQWT, you can download it and modify the dimensions to better fit the driver you want to use.
https://freeloudspeakerplan.rf.gd
In the link below you find one model for TQWT, you can download it and modify the dimensions to better fit the driver you want to use.
https://freeloudspeakerplan.rf.gd
Dave ... no sim, just guessing from online building. So far length 72", vol = Vas (3.8 cu ft).
Did see one plan showing opening 1.0 - 1.25 × SD.
Zene
Did see one plan showing opening 1.0 - 1.25 × SD.
Zene
Dave, thx but no way to model if takes 'puter. Found nothing for straight pipe. Will not do ported version whatever that's called. Hint?
Zene
Zene
Hmm 8.9" = ~22.606 cm
22.606^2*4/pi = ~401.363 cm^2
Anyway, all else equal, halve the Sd = halve the Vas; also, T/S specs calc a 24.53 BL, yet BL specs = 21.17, ergo Qts increases to mid 0.20s, so ideally need to measure them.
For your 72" x ~107 L Voigt pipe and using worst case specs, HR sims 50.8 cm driver offset with 163.5 cm offset 201 cm^2 x 1.8 cm baffle thickness vent/72"/107 L/0.27 kg stuffing down to just above the vent = ~42 Hz/F6/2pi with ~42 Hz peaking corner loaded.
Thx for running sim.
Will see why calculator failed for Sd.
If I can squeeze 42 hz, I'll be happy. A full octave lower that I have now.
Will build option to decrease opening.
Zene
Will see why calculator failed for Sd.
If I can squeeze 42 hz, I'll be happy. A full octave lower that I have now.
Will build option to decrease opening.
Zene
I don't think It fits; I mean a speaker made for general purpose in the subwoofer sub-forum.
Luckily the 90 dB SPL at 45 Hz Will be Heard ...if that's the goal
Luckily the 90 dB SPL at 45 Hz Will be Heard ...if that's the goal
Pico..... actually, goal, due to apt living is a very clean 70 -75 db bass. This is really hard to accomplish (two years in the making) and I'm not willing to use EQ. The rest of system is all horns, making it even more difficult. Cones usually do a much better job at lower output.
Zene
Zene
I still don't understand...
Probably a roll suspension, as I've seen It used frequently in this application, which usually permits more come travel, although a metal cone performs .dot...,than a pleated cloth suspension.
The TQWT or whatever don't justify the presence of a 15" ex-coaxial driver in the subwoofer sub-forum.
Probably a roll suspension, as I've seen It used frequently in this application, which usually permits more come travel, although a metal cone performs .dot...,than a pleated cloth suspension.
The TQWT or whatever don't justify the presence of a 15" ex-coaxial driver in the subwoofer sub-forum.
Low Xmax pleated 12" coax minus the horn driver, so 25 W max per HR, so pretty lame nowadays unless for small, low power mandated apps such as this one.
Regardless, historically, 'sub' bass' was < 60 Hz, but nowadays THX's 80 -120 Hz is the de facto 'rule' whether we like it or not (I don't), so either way it technically qualifies.
Regardless, historically, 'sub' bass' was < 60 Hz, but nowadays THX's 80 -120 Hz is the de facto 'rule' whether we like it or not (I don't), so either way it technically qualifies.