Hi X - - do you think something cool could be made from the woofers I already own? (there must be more than a dozen 15s in my pile) - there's vintage 416A; 421A/421LF - for newer woofers with none or only an hour of use I've got the following - Fs is higher than that nice Eminence.
I have one neo magnet 15" Peavey (discontinued and difficult to find at this point - its rather "mellow" - less HF peak than EV15B/L - maybe from the 4" coil - moving mas is low)
For something small, I think the single 12 pym1298/Kappa12a XKi suggested a few months ago with 50L rear and 12.5L front would be pretty punchy:
Def_Driver 'Peavey SC15Neo' |Notes: PEAVEY BWX SC 15 NEO with 2600 W Peak 1300 W Program 650 W Continuous Power, 1.9mm xmax)
SD=840cm2
fs=51.2Hz
Mms=52.9
Qms=10.604
Qes=0.352
Re=5.32
BL=16.04
Le=0.336mH
Vas=182.4
***********************************
several NOS JBL M151 musical instrument speakers with aluminum dustcap
Def_Driver 'JBL 151-1' |Notes: JBL M151 5.08mm xmax, 300 watt rating musical instrument use, Eff=6.5%)
SD=880cm2
fs=45Hz
Mms=71
Qms=4.8
Qes=0.25
Re=4.8
BL=18.8
Le=0.72mH
Vas=198.2
*********************
several JBL 2035H from their dual driver theater cabinets
Def_Driver 'JBL 2035H' |Notes: JBL 2035H multi-rib cone. 400W, 7.11mm xmax, Eff=4.13%)
SD=880cm2
fs=48Hz
Mms=85
Qms=5
Qes=0.36
Re=3.9
BL=16.6
Le=0.25mH
Vas=140.5
***************************************
I have one neo magnet 15" Peavey (discontinued and difficult to find at this point - its rather "mellow" - less HF peak than EV15B/L - maybe from the 4" coil - moving mas is low)
For something small, I think the single 12 pym1298/Kappa12a XKi suggested a few months ago with 50L rear and 12.5L front would be pretty punchy:
An externally hosted image should be here but it was not working when we last tested it.
Def_Driver 'Peavey SC15Neo' |Notes: PEAVEY BWX SC 15 NEO with 2600 W Peak 1300 W Program 650 W Continuous Power, 1.9mm xmax)
SD=840cm2
fs=51.2Hz
Mms=52.9
Qms=10.604
Qes=0.352
Re=5.32
BL=16.04
Le=0.336mH
Vas=182.4
***********************************
several NOS JBL M151 musical instrument speakers with aluminum dustcap
Def_Driver 'JBL 151-1' |Notes: JBL M151 5.08mm xmax, 300 watt rating musical instrument use, Eff=6.5%)
SD=880cm2
fs=45Hz
Mms=71
Qms=4.8
Qes=0.25
Re=4.8
BL=18.8
Le=0.72mH
Vas=198.2
*********************
several JBL 2035H from their dual driver theater cabinets
Def_Driver 'JBL 2035H' |Notes: JBL 2035H multi-rib cone. 400W, 7.11mm xmax, Eff=4.13%)
SD=880cm2
fs=48Hz
Mms=85
Qms=5
Qes=0.36
Re=3.9
BL=16.6
Le=0.25mH
Vas=140.5
***************************************
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a double 12" XKi might be pretty powerful - the sim from awhile ago suggested 100 liter rear and 25 liter front for pym1298/kappa12a. I've love a good 10 XKI or double XKi with less bulk than the 125 liter airspace 2Xpym1298.
a double K-tube on top would lessen thermal compression - a 211 bulb based (4 in parallel for 4 ohms) light bub limiter is still a good idea
two pym1298 in parallel 2.83v
SredniVashtar's sim
a double K-tube on top would lessen thermal compression - a 211 bulb based (4 in parallel for 4 ohms) light bub limiter is still a good idea
two pym1298 in parallel 2.83v
SredniVashtar's sim
An externally hosted image should be here but it was not working when we last tested it.
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here's a couple of snippets of the Karlsonator Six prototype loaded with L.Cao F6 whizzerless fullrange - its a very nice little fullrange
https://youtu.be/bJYLZrPLmTo
https://youtu.be/bJYLZrPLmTo
that's pretty good - is that "each"? - are they Karlsonator 12 per GregB's plan or Karlson 12 "K12"? - (any pictures?) Greg's "Karlsonator 12" is tuned ~37Hz - Karlson K12 are more like 62Hz or so. The slit vent Karlson 12 behaves somewhat different under large signal conditions than a single vent of similar area. The Karlsonator 12 will go about a half octave or more deeper than a K12. A K12 with the right speaker can sound very good and also can substitute for a midbass horn in some instances (provided a strong driver and sufficient power)
http://www.audiokarma.org/forums/index.php?attachments/img_20170702_101344260-jpg.962469/ these are ls-12 Wolverines. Price is a pair
I signed in finally - but the picture link isn't working - do you have an image location or working URL ?\
The Karlsonator (12) hasn't been around very long - Karlsons' K12 made its debut in the fall of 1964 and reviewed by Julian Hirsch.
There was a set of Karlson Twelves with Wolverine discussed at AudioKarlma. A Wolverine has rather high Qts so may sound ""bass heavy" -"thick" in a K12. They appear to be the 1954 design aika "Karlsonette" as the eigh inch model had not yet appeared.
if that's real veneer on the wings and cabinet solid, I would give $50 each for the cabinets alone assuming not a lot of veneer damage to the rest of the cabinet. It would cost at least $300 to have a pair built by a cabinet maker.
a Wolverine would be nice open baffle
The Karlsonator (12) hasn't been around very long - Karlsons' K12 made its debut in the fall of 1964 and reviewed by Julian Hirsch.
There was a set of Karlson Twelves with Wolverine discussed at AudioKarlma. A Wolverine has rather high Qts so may sound ""bass heavy" -"thick" in a K12. They appear to be the 1954 design aika "Karlsonette" as the eigh inch model had not yet appeared.
if that's real veneer on the wings and cabinet solid, I would give $50 each for the cabinets alone assuming not a lot of veneer damage to the rest of the cabinet. It would cost at least $300 to have a pair built by a cabinet maker.
a Wolverine would be nice open baffle
An externally hosted image should be here but it was not working when we last tested it.
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I think a Karlsonator could be used with some peaking in the midbass.
Lets see what X can do.
The Altec note in the link below shows 755C's response in a 6 cubic foot T-line.
Akabak input form for X
Def_Driver 'Altec 755C' | Classic 8 inch full range speaker
Sd=254.47cm2
Fs=53.485Hz
Mms = 10.48 g
Qms=4.988
Qes=1.154
Re=7.099 ohm
BL=4.655 T*m
Le= 0.2285mH
Vas=76.81L
Measured parameters for two 755C
Lab C3 - Altec 755C Thiel/Small parameter number
Altec note on 755C
https://greatplainsaudio.com/wp-content/uploads/2017/07/TL_123.pdf
Lets see what X can do.
The Altec note in the link below shows 755C's response in a 6 cubic foot T-line.
Akabak input form for X
Def_Driver 'Altec 755C' | Classic 8 inch full range speaker
Sd=254.47cm2
Fs=53.485Hz
Mms = 10.48 g
Qms=4.988
Qes=1.154
Re=7.099 ohm
BL=4.655 T*m
Le= 0.2285mH
Vas=76.81L
Measured parameters for two 755C
Lab C3 - Altec 755C Thiel/Small parameter number
Altec note on 755C
https://greatplainsaudio.com/wp-content/uploads/2017/07/TL_123.pdf
a couple of question for xrk971 - if one wishes to use a Fostex FE206EN in GregB's Karlsonator8, might it be advantageous to tune it a bit higher than the ~41Hz tuning when built to plan? If so, what is the easiest mod to achieve higher tuning? Can it be made adjustable in a way to accomodate 41Hz or a bit higher tuning if needed?
