Hello all,
anybody knows these? I can get a cheap pair, but with some "tailor made" 15" drivers. They are big, so I bet they can play lower than my Peavey FH-1 copy. See the attachment for plan (it actually says SL-36 on it). The search for SL36 shows some promising numbers, it seems it will do what I expect from the size
anybody knows these? I can get a cheap pair, but with some "tailor made" 15" drivers. They are big, so I bet they can play lower than my Peavey FH-1 copy. See the attachment for plan (it actually says SL-36 on it). The search for SL36 shows some promising numbers, it seems it will do what I expect from the size
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(my keyboard lost print screen function so here's a few words)
if EL/Sl36 then normally use an 18" and look like the image below. They could play reasonably flat to 50Hz 2 pi - depending upon driver. In a 2 pi sim with Eminence Sigma 18-2, half power occurs around 60Hz (60Hz is also the displacement minimum) then a gentle drop with F10 around 35Hz. A better driver lke Faital's 18hp1060 appears more flat than the Sigma. EL/SL look about the same in sims as the updated Earthquake cabinet mentioned in the "Sensurround" thread.
In one pi, and with 18HP1060, an EL36 sims ~106dB @42Hz vs about 96dB for the FH1. I have FH1 and prefer Karlson including the little "K12".
Two EL36 in parallel with 18HP1060 in 1 pi at 63 volts input shows 140dB output and 6mm excursion down to 48Hz.
At two foot cabinet depth, B36 had a shorter path by about 2 foot and with a rough sim shows 2 pi rolloff below 80Hz and excursion minimum in that region. I had a pair and they were more a midbass box than bass.
The drawing you posted is interesting as looks like its been drawn to show a narrowed 15 inch driver version of the deeper cabinet .
If the cabinets are in solid condition, and 90cm or so deep model, then would horn load lower than an FH1.
if EL/Sl36 then normally use an 18" and look like the image below. They could play reasonably flat to 50Hz 2 pi - depending upon driver. In a 2 pi sim with Eminence Sigma 18-2, half power occurs around 60Hz (60Hz is also the displacement minimum) then a gentle drop with F10 around 35Hz. A better driver lke Faital's 18hp1060 appears more flat than the Sigma. EL/SL look about the same in sims as the updated Earthquake cabinet mentioned in the "Sensurround" thread.
In one pi, and with 18HP1060, an EL36 sims ~106dB @42Hz vs about 96dB for the FH1. I have FH1 and prefer Karlson including the little "K12".
Two EL36 in parallel with 18HP1060 in 1 pi at 63 volts input shows 140dB output and 6mm excursion down to 48Hz.
At two foot cabinet depth, B36 had a shorter path by about 2 foot and with a rough sim shows 2 pi rolloff below 80Hz and excursion minimum in that region. I had a pair and they were more a midbass box than bass.
The drawing you posted is interesting as looks like its been drawn to show a narrowed 15 inch driver version of the deeper cabinet .
If the cabinets are in solid condition, and 90cm or so deep model, then would horn load lower than an FH1.
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The driver is a re-wound vintage Tesla, so it can be anything, but these were usually solidly made with good prameters, they lacked in the power capacity, but that is not an issue for a home subwoofer.
I am quite happy with what the FH1 can do in the lows, so I should be happy with this one, too, it will be at the back wall and partially in the corner. I have seen FH1 used above these, so that is something I will definitely try out
I am quite happy with what the FH1 can do in the lows, so I should be happy with this one, too, it will be at the back wall and partially in the corner. I have seen FH1 used above these, so that is something I will definitely try out
here's 2 pi ~ 1 watt (2.00v) for a stock width EL36 (bold) vs FH1 when both are loaded with a Klipsch K33E
back chamber volume for EL36 could be reduced by 20-22 liters for some mild improvements (flatter response, less excursion below cutoff) with K33E.
Here's my FH1 outdoors with stock 1504 woofer
back chamber volume for EL36 could be reduced by 20-22 liters for some mild improvements (flatter response, less excursion below cutoff) with K33E.
Here's my FH1 outdoors with stock 1504 woofer
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No it was standing IIRC... and that would not make any difference.
This graph does illustrate a common factor with classic horn subs though, these older designs are based around having a cluster of 4 boxes minimum to have enough mouth area for flat response to the horn cutoff, so with a cluster of boxes that lowered shelf from 50-80hz would fill in and the graph starts to look a lot more like the simulated response.
With the boxes indoors however and especially in a room a lot smaller than say an airplane hanger/gymnasium/ballroom, room gain comes into play and the response of even a single box will change considerably in your favor.
This graph does illustrate a common factor with classic horn subs though, these older designs are based around having a cluster of 4 boxes minimum to have enough mouth area for flat response to the horn cutoff, so with a cluster of boxes that lowered shelf from 50-80hz would fill in and the graph starts to look a lot more like the simulated response.
With the boxes indoors however and especially in a room a lot smaller than say an airplane hanger/gymnasium/ballroom, room gain comes into play and the response of even a single box will change considerably in your favor.
here's a sim of a 2/3 size (24"x24"x18" cabinet) EL36 with Kappa12a - I realized my RCA-Fan midbass horn graphs essentially identical in hornresp and shares its fold so a 2/3 scale EL36 version probably would make a decent little midbass horn - or fairly loud toy.
note: an 0.83 scale SS15 of the same bulk favors the 60Hz range as is tuned ~ 1/2 octave lower than the 0.66 scale EL36
note: an 0.83 scale SS15 of the same bulk favors the 60Hz range as is tuned ~ 1/2 octave lower than the 0.66 scale EL36
- found a nice drawing of what assume is an AB36 and details on throat chamber. How much improvement does the refinement give vs having the full cone area fire against the top ?
https://i.imgur.com/xIeTPlt.jpg
for a toy scaled version with 10" speaker, it would be easier to omit the throat chamber piece and load from a top removable panel.
https://i.imgur.com/xIeTPlt.jpg
for a toy scaled version with 10" speaker, it would be easier to omit the throat chamber piece and load from a top removable panel.
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