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p audio SN 15MB alternatives
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teeth View Drop Down
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    Posted: 20 September 2022 at 10:50am
i've just acquired a pair of lovely X15's

unfortunately one SN 15MB is blown (?) no sound at all.

i've no idea how to diagnose this let alone fix it, so i guess i will have replace...

i see the SN15MB is OOP, on the offchance anyone knows of anyone selling that would be ace.

failing that, i guess i'll have to get a pair of replacement drivers, has anyone got any recommendations? i have some fane sov's kicking about, hardly a viable replacement but...?

EDIT:


have some options here it seems


Edited by teeth - 05 November 2022 at 12:27pm
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Old Croc
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Points: 6949 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 20 September 2022 at 1:41pm
I may have one, but postage could be expensive. I'll PM you later.   Smile




Edited by Earplug - 20 September 2022 at 1:42pm
Earplugs Are For Wimps!
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teeth View Drop Down
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thanks earplug, i'll await your message :)
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Old Croc
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Ok, PM sent.  Smile
Earplugs Are For Wimps!
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teeth View Drop Down
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Points: 334 		Post Options Post Options   Thanks (0) Thanks(0)   Quote teeth Quote  Post ReplyReply Direct Link To This Post Posted: 30 September 2022 at 11:20am
i'm going to try them with a pair of fane 600LF
all i have til the p-audio from earplug arrives

will report back :)
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teeth View Drop Down
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Points: 334 		Post Options Post Options   Thanks (0) Thanks(0)   Quote teeth Quote  Post ReplyReply Direct Link To This Post Posted: 05 November 2022 at 12:30pm

plugged the TSPs in to that site and got a few options back
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cravings View Drop Down
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there was always a bit of ambiguity / weirdness with published specs for p-audio stuff, just saying..
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teeth View Drop Down
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Points: 334 		Post Options Post Options   Thanks (0) Thanks(0)   Quote teeth Quote  Post ReplyReply Direct Link To This Post Posted: 06 November 2022 at 10:59am
i'm not surprised you said that tbh the specs i saw aren't quite there... 3.5mm xmax?

here's a bit of info i found

P-Audio SN 15MB 300w old model:

Thiele-Small Parameters  
Resonant Fequency (fs) 47 Hz
Impedance (Re) 5.5 ohms
Coil Inductance (le) 0.85
Electromagnetic Q (Qes) 0.31
Mechanical Q (Qms) 8.31
Total Q (Qts) 0.30
Compliance Eqiv. Volume 176 liters
Mechanical Compliance of Suspension (Cms) 151 uM/N
BL Product (BL) 19.70 T-M
Diaphragm Mass incl. Airload (Mms) 75.7 grams
Equivalent Resistance of Mech. Suspension Loss (Rms) N/A
Efficiency Bandwidth Product (EBP) 151
Voice Coil Overhang (Xmax) 3.5mm
Surface Area of Cone (Sd) 907cm2


P-Audio 15BM-300B 15" 300W New model:

Re.....................................................................................5.7
Fs...................................................................................48hz
Mms................................................................92.19 grams
Mmd................................................................77.81
Qms..................................................................................5.39
Qes...................................................................................0.43
Qts....................................................................................0.40
Vas..................................................................123.35l
BI...............................................................................19.19
Cms.......................................................................1.2e-04 m/n
Rms.........................................................................5.10 ns/m
Le (at 1kHz)................................................................0.44 mh


i think i'll have to make some informed decisions with regards to what driver options to explore tbh
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Points: 979 		Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 06 November 2022 at 11:47am
The xmax of P-audio drivers is calculated by the conservative way like BMS does: (VC winding height - Gap height) / 2

The biggest P-audio problem is big factory tolerances and the ever changing spec sheets for drivers. So even if you plug these TS-paramters in, chances are big the eventual drivers does not come close.

Do you already have those drivers?
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Why not get them reconed?

Drop Wembley and/or RMJ a line.
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teeth View Drop Down
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Points: 334 		Post Options Post Options   Thanks (0) Thanks(0)   Quote teeth Quote  Post ReplyReply Direct Link To This Post Posted: 06 November 2022 at 2:12pm
yes smitske96 - i have one and on that needs reconing

thanks APW - i'll see if they can recone, probably the best option. hope they can get kits.

i do wonder if there is a driver out there that's suitable for the use case, and if so, i'd like to find it.

currently there are no recommeneded drivers for the plan which is a shame, they're a cool design. i'd like to find something that could ammend the plan so people can build them again.
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teeth View Drop Down
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Points: 334 		Post Options Post Options   Thanks (0) Thanks(0)   Quote teeth Quote  Post ReplyReply Direct Link To This Post Posted: 06 November 2022 at 4:43pm
looking at the fane 15 300 TC

it's a fullrange 15" so could be roll the HPF and LPF up a bit if you were using midbass such as kicks etc and would take some strain off the comp driver. mine is x-d over quite low

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