Cheap 10inch woofer in tapped horn? what would you do?

[ThyDntWntMusic]

Originally Posted by Brian Steele

What brand/model are those drivers, and how much did they cost?

8zed

$AU35 each, which is about $US35

but, I don't think there are anymore available.

maybe the phase plug does nothing, but it looks cool

[bjorno]

FYI:

b

[ThyDntWntMusic]

thanks for that, but I'm a bit confused by the eg being 16?

65 watts into 4 ohm?

ah, but you did model it as half space, while I model mine as 8th space, as thats what I've measured horns to actually do in room

[ThyDntWntMusic]

I'm considering just doing the design in black and not worrying about 30Hz and below.



same power as the grey line (which is your TQWT) in 8th space, with 1 watt.

[bjorno]

Originally Posted by ThyDntWntMusic

I'm considering just doing the design in black and not worrying about 30Hz and below.



same power as the grey line (which is your TQWT) in 8th space, with 1 watt.

Hi,

Sorry for neglecting the 30 Hz requirement: That is IMO, a better choice for your drivers than what I came up with . See the revised simulations for closer down to ~30 Hz and promising more improved SQ performance.

How do you know when your design are within 8th-space? See the 8th-space picture?

b

[ThyDntWntMusic]

Originally Posted by bjorno

How do you know when your design are within 8th-space? See the 8th-space picture?

b

what do you mean by that?

I did quite like your first design, but I felt they were lacking the efficiency to reach 150dB

I was also trying to come up with a design that was simple enough to be a single fold, made from a 120cm wide piece of MDF...

I quickly scribbled this up, its not accurate, but was just a proposed idea... but to make four of these, each 4 times the height, is just a lot of work!

[ThyDntWntMusic]

might fold them something like this.

I don't really want to invert the woofers, so the throat will have to be larger than originally planned.. but it can still taper down to keep the frequency response reasonable.

[bjorno]

what do you mean by that?[/QUOTE]

IMO,You cannot count on 100% 8th-space boundary in-band gain for a realistic design to reach 150 dB/1m using all your drivers. I think at most would be around ~140 dB (Accompanied with lot of hear-able distortion and other artifacts included too, of course).

I did quite like your first design, but I felt they were lacking the efficiency to reach 150dB

I try to support SQ in my designs and for home environment: I would never endorse SPL levels that would permanent injure a listeners ears.

b

[ThyDntWntMusic]

its not even worth the effort for only 140dB.

[tb46]

Tactile audio for the deaf, what a concept.

Noise-induced hearing loss - Wikipedia, the free encyclopedia

Decibel (Loudness) Comparison Chart

Dangerous Decibels How Loud is Too Loud?

Have fun with that,
Regards,