| freddi |
| simulations using 1mm excursion don't look great for playing bassdrum - how in the real world does 206E behave when driven past xmax on transients? how do other Fostex fare? |
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| no xo |
| Freddi, my Fe206E`s in the recommended BLH are powered by a 100 watt NAD HT receiver and sub comes in at 80HZ, so I may not be the best to answer your question. Without the sub the roll off pretty hard at 60HZ, but the bass they have is fast and tuneful. These BLH`s need a sub for my tastes and my room. By themselves they are great on acoustic music, but on rock or electronic they are pretty lean. YMMV, NOXO |
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| hm |
Hello,
fullrange I never get more than 1 W impuls,
than the sound gets crip and harschness distrotion.
But this is ~100 dB, enough.
I tested it with Lowther, B200, Fostex, Nirvana all 8"
1 W impuls is around 10 a´clock of your volume switch. |
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| ronc |
I have been interested by the BIB action and the reported LF response.
The flaws i see are a greater TL action than horn and lack of a filter chamber.
As i have some time from work (no major projects soon) i have been running some sims on a type of up firing horn that uses the same boundry conditions as the BIB. Unlike the BIB this will be a multi stage expansion with a curved mouth exit (my norm) that will redirect the wave front to the roof at an angle so less reflected energy will be directed back to the mouth. The filter chamber will be side mounted and fire into the throat area on a curved inside pressure director. First expansion stage will be upwards with a staight divider (vertical) on the second ,third and fourth expansion stage. The actual flares will be external and present a small footprint, but stability support will have to be greater due to the large mouth ( necessary for roll in of the horn action) and greater mass in a higher vertical position.
Havent decided on the driver yet, but the new 206 looks like a good appliccation.
First pass with the new 206 driver appears to be in the high 20s and low 30s corner loaded. ( new programming for corners here).
The main problem i see in LF actions is structural as the wavelength can cause the cab to resonate as a singular unit.
This horn will NOT be small. Forget WAF. However if you can live with the odd shape and large size it should do well in larger type ( volume) rooms. It will require a minimum 18" either round or square baffle with the square being the shape of the one on the A166.The larger baffle is necessary as i planned the horn action to roll off earlier than my usual designs as i simed a lesser BW to achieve the lower frequency response and a baffle roll in around 238 hz.
I will report on progress as time permits.
ron |
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| seanzozo |
Ron,
That sounds awesome. Any thought given as to what city gets the honor this time?
I think I will have to build one of these when you finish. Are these targeted at an 8ft ceiling?
Will the LF cutoff be the 1w input max like the Austin. 97db at 30hz would be impressive
sean |
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