Lynn Olson said:
Lynn,
I am trying to work with what I already have as far as drivers and horns. If it was from scratch I think 4 mid QTS 12's would be fine. I believe you should not use a typical prosound .2 - .4 driver down there, maybe .45 with a little eq - If you go over .8 it can still sound good (no eq) but gets 'woolly' sounding . For example the Eminence Alpha 15 - I see a lot of folks are using them open and my experience with it and the big 21" Madison ultra high QTS driver is they sound a bit slow and detached when used with a high quality mid and treble. The smaller .7 QTS drivers are a world better. I haven't looked but there are probably a few different HE upper QTS mid xmax tens or twelves out there. Try bass guitar speakers..! Look for woofers that don't get nasty above 1K, low pass them with a 4th order electronic crossover. You can still use a passive line level xover to the mid - Run simulations on the quartet and look at the excursion and power handling at 45-60 (probably your lower limit) cycles in a large (like 200 cubic foot) infinite baffle to get an idea what they will do on the open baffle when mounted low 'in room' - also remeber I high pass my bass..
For the mid the 18 sound driver should be awesome. I would however use a 250 flare horn. Any smaller and you probably want to cross over lower ( I do) and can't and any larger you will get beam and honk. The horn will 'break the rules' and will be shorter than what most horny's will recommend , that's OK - this is a mid horn - it will sound better.
Personally I like the treble to match the mid. Here I use the cheapo Dayton 1.8K conical round horn with 70 degree dispersion. The ribbon will be OK , I have tried to match a ribbon with a mid horn in the past and feel the higher you cross the better chance of success you will have. 8K or higher is probably best. I can't imagine finding a cone mid horn that will be usable beyond 3-4 k though.
Whoops- I have been stating my mid horn is 300 hz flare it IS NOT - it is 360 hz. tractrix - I recommend 300 then for the mid, in other words a little bigger then what I'm using. 250 will probably get to be too long and may honk....
Re: 12''
I think something more on the lines of .5 to .8 QTS and 98 db/w sensitivity - He is looking for high efficiency bass drivers not sub drivers, something with a net array sensitivity of 103 db or so at 50 hz mounted on a board
Maybe six of these - http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-332
The top end is kinda funky though
estman said:
I think something more on the lines of .5 to .8 QTS and 98 db/w sensitivity - He is looking for high efficiency bass drivers not sub drivers, something with a net array sensitivity of 103 db or so at 50 hz mounted on a board
Maybe six of these - http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-332
The top end is kinda funky though
I think the Tone Tubby alnico would be the perfect candidate for the bass array. High spl, qts of 0.8, and hemp 😀.
edit: although I couldn't find anything about the xmax..
edit: although I couldn't find anything about the xmax..
SunRa said:
They are 279 each! thats $ 2000 for the bass! Too much money (for me at least) - plus no response graph - bet they scream above 1k - that's what bass guitarists crave!
Re: Re: 12''
As long as you realize that they're not anywhere near 98dB in the relevant bandwidth, they look pretty okay.
Why can't we just go to a 3 point sensitivity spec for woofers, 50Hz, 100Hz, and 1kHz, infinite baffle anechoic measure, it'd sure help designers have valid info to compare.
Magnetar said:
As long as you realize that they're not anywhere near 98dB in the relevant bandwidth, they look pretty okay.
Why can't we just go to a 3 point sensitivity spec for woofers, 50Hz, 100Hz, and 1kHz, infinite baffle anechoic measure, it'd sure help designers have valid info to compare.
What about four of these per channel with a little EQ for a lower cost multi-amped OB?
http://www.partsexpress.com/pdf/290-516s.pdf
http://www.partsexpress.com/pdf/290-516s.pdf
Actualy Mr. Lynn Olson measured and auditioned them and he was quite impressed. I saw the graph on his web-site... no usual guitar break-up there...
Re: Re: Re: 12''
6 of them are in series parallel at 60 cycles is 98 db, in parallel (use 16 ohm woofers like i do and you are over 104 without room gain. Here are 6 of these in parallel (110 db/w - 104 at 60 cycles) - too low of an impedance!
This is one example that won't break the bank, not what I'd use
It's kind of BIG = LOL
badman said:
6 of them are in series parallel at 60 cycles is 98 db, in parallel (use 16 ohm woofers like i do and you are over 104 without room gain. Here are 6 of these in parallel (110 db/w - 104 at 60 cycles) - too low of an impedance!
This is one example that won't break the bank, not what I'd use
An externally hosted image should be here but it was not working when we last tested it.
It's kind of BIG = LOL
Norris Wilson said:
Four of those will do 120 db at 50 cycles before destruction- 95 db at 60 cycles without eq or room gain and be 102 db sensitive at 400 cycles - they'll need eq, good bass power is cheap
Four of these are better for this and cheaper
http://www.partsexpress.com/pdf/264-334.pdf
97 db at 50 cycles, 99 at 60, and 101 at 400 - less eq required
On sale for 40 bucks a piece..
SALE
Hi
Just came across this page,
Reproduktory 5" + 6" + 8"
http://www.prodance.cz/protokoly.php?AnchorID=49&Lng=CZ
Reproduktory 10"
http://www.prodance.cz/protokoly.php?AnchorID=50&Lng=CZ
Reproduktory 12"
http://www.prodance.cz/protokoly.php?AnchorID=51&Lng=CZ
Reproduktory 15"
http://www.prodance.cz/protokoly.php?AnchorID=52&Lng=CZ
Reproduktory 18"
http://www.prodance.cz/protokoly.php?AnchorID=53&Lng=CZ
Reproduktory 21"
http://www.prodance.cz/protokoly.php?AnchorID=54&Lng=CZ
Reproduktory 24"
http://www.prodance.cz/protokoly.php?AnchorID=55&Lng=CZ
Some have MLSSA CSD – disillusion guaranteed....
😀
Greetings
Michael
Lynn Olson said:
Just came across this page,
Reproduktory 5" + 6" + 8"
http://www.prodance.cz/protokoly.php?AnchorID=49&Lng=CZ
Reproduktory 10"
http://www.prodance.cz/protokoly.php?AnchorID=50&Lng=CZ
Reproduktory 12"
http://www.prodance.cz/protokoly.php?AnchorID=51&Lng=CZ
Reproduktory 15"
http://www.prodance.cz/protokoly.php?AnchorID=52&Lng=CZ
Reproduktory 18"
http://www.prodance.cz/protokoly.php?AnchorID=53&Lng=CZ
Reproduktory 21"
http://www.prodance.cz/protokoly.php?AnchorID=54&Lng=CZ
Reproduktory 24"
http://www.prodance.cz/protokoly.php?AnchorID=55&Lng=CZ
Some have MLSSA CSD – disillusion guaranteed....
😀
Greetings
Michael
Goldwood 10's
6 of these in series- parallel will be 100 db at 60 cycles
Look for a similar 10 (maybe a little lower fs and qts) at 16 ohm and run 5 or 6 in parallel - that's what works for me
6 of these in series- parallel will be 100 db at 60 cycles
Look for a similar 10 (maybe a little lower fs and qts) at 16 ohm and run 5 or 6 in parallel - that's what works for me
Hi
Hard to believe that the prominent 2 kHz peak does not resonate.
Greetings
Michael
Norris Wilson said:
SunRa said:
Hard to believe that the prominent 2 kHz peak does not resonate.
Greetings
Michael
Just found that bass driver. 15", but look at the Mms:
http://www.olimpiaudio.com/Prodotti/Cleveland/W416Neo.html
http://www.olimpiaudio.com/Prodotti/Cleveland/W416Neo.html
It's very light cone for a 15'' river... From the same producer, a 10" with a mms of 25 g and 98dB sensitivity: here
edit: the ferite 15" version is having a higher Qts.. (around 0.5), with the same cones which makes them well suited for OB. Especially this one looks very nice though: 37grams Mms, 101db sensitivity, 0.36Qts.
edit: the ferite 15" version is having a higher Qts.. (around 0.5), with the same cones which makes them well suited for OB. Especially this one looks very nice though: 37grams Mms, 101db sensitivity, 0.36Qts.
re
Very nice website. Good measurements! Some of the smaller B&C look very well behaved, the RFC too. Thanks!!!
mige0 said:
Very nice website. Good measurements! Some of the smaller B&C look very well behaved, the RFC too. Thanks!!!
Hi
http://www.olimpiaudio.com/Prodotti/ATD/2140M.html
Look at the price – isn't it olympic !?!
Greetings
Michael
http://www.olimpiaudio.com/Prodotti/ATD/2140M.html
Look at the price – isn't it olympic !?!
Greetings
Michael
Hi
Olympic !?!
Not at all - I think I am in a dream !
http://www.olimpiaudio.com/Listini/ListinoFostex.html
Greetings
Michael
Olympic !?!
Not at all - I think I am in a dream !
http://www.olimpiaudio.com/Listini/ListinoFostex.html
Greetings
Michael
Magnetar said:
Magnetar said:
I tested members from both of these product lines, here: http://s139.photobucket.com/albums/q288/augerpro/Selenium 10PW3/
http://s139.photobucket.com/albums/q288/augerpro/Goldwood GW-1258/
Neither has impressive distortion at bass frequencies, and the Selenium has pretty high odd order in the midbass/lower midrange.