nO ideA...
I am not a Karlson fan myself, and have no basis to say anything one way or the other about them...
I would think that they are not intended to work all the way "up" in frequency, due to the distance between the driver and the Karlson slot creating a lot of unwanted reflections, and the lack of dispersion due to the slot, plus the diffraction fron the slot edge...?
_-_-bear
I am not a Karlson fan myself, and have no basis to say anything one way or the other about them...
I would think that they are not intended to work all the way "up" in frequency, due to the distance between the driver and the Karlson slot creating a lot of unwanted reflections, and the lack of dispersion due to the slot, plus the diffraction fron the slot edge...?
_-_-bear
Hi all
seems like the specs changes a little bit ?
I've a pdf (nov 2010) from PE-site
FS: 37Hz, Qts: 0,27 Vas: 131 liter
kippel as a pdf-document at PE.
Actually, the new parameters are:
FS: 45Hz Qts: 0,30 Vas 79 liter
from actual pdf dated april2011
Both parameter-sets simulate somewhat identical in a horn.
for bass reflex enclosure:
Try a 40-50L BR tuned to 45-50Hz.
Last edited:
do other 8s have this hole? - seems like it wouldn't be good for rear load pipehorn nor Karlson application -
An externally hosted image should be here but it was not working when we last tested it.
yes.
Depends on scale of the graph or on smothing - so maybe not as obvious in other pictures. And probably 100 or 200Hz higher.
Match that 'hole' with the dipole peak of a suitable open baffle and whadda ya get? The forest is soooo much greener when you look through the trees.
Green in the sense of young, immature and in need of further development? Because, apart of that dip, what are you going to do with the 15dB rise between 0.4 and 3.5 Khz? That is almost 6dB/octave, but not quite.
I still don't get how you could work with this speaker, without some heavy DSP or analog filtering intervention. Which defeats one of the main purposes of full range, which is not having phase shifts because of filtering.
I still don't get how you could work with this speaker, without some heavy DSP or analog filtering intervention. Which defeats one of the main purposes of full range, which is not having phase shifts because of filtering.
you got that right - "furniture grade" quality can vary to a laughable degree - while not at all a fan of the stack laminated method for several reasons, a better grade material would be shop grade Baltic Birch or similar HDP (high density plywood) - sure it costs more, but as they say in the millwork trade - CCM (no matter how you do it, curves cost money)
Whether by intention or happenstance, it appears to have been designed for a compound horn.
GM
In other words, to use this speaker, you would have to combine Mayhem13's advice to get rid of the dip at 400 Hz by building an OB, with GM's suggestion for a compound horn to tilt the rising slope above 400 Hz downwards..
Both is solid advice, but to combine them is beyond present enclosure technology.
Both is solid advice, but to combine them is beyond present enclosure technology.
Although I agree, vacuphile, that this FR is ugly and would most likely not suit my tastes at all, I believe it is work able. I would put it in a wide enclosure, like 500 x 800, so that the diffraction would fill in the hole a little, and baffle step would flatten the bottom. Then from about 5 or 600hz on up, I'd use a strong baffle step compensation and possibly a notch at 3500hz.
Sure it's no longer a purist speaker and has an awkwardly huge baffle, but it would give a 90+db sensitive full range speaker, with good extention, and without to much circuitry.
Sure it's no longer a purist speaker and has an awkwardly huge baffle, but it would give a 90+db sensitive full range speaker, with good extention, and without to much circuitry.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.