Hi everyone, i have two peerless 830452 subwoofers that i would love to use in a horn build, an member in this section wanted to build a horn sub with a similar peerless driver, and the models seemed to be very positive.
I want to build two, each with one woofer, size wise i am looking for around 120cm by 100cm by 35-40cm, smaller would be better.
For a tune is was thinking 15-18Hz low knee (if thats the right term!), I have built many other subs in the last few years, mostly ported and some sealed, i cannot figure out horn response at all, winISD no problem, but its not applicable for this build.
Here are the Parameters (spec not measured)
Znom 8 ohm
Re 3.4 ohm
Le 4.3 mH
fs 18.6 Hz
Qms 2.66
Qes 0.18
Qts 0.17
Mms 139.3 g
Cms 0.52 mm/N
Sd 333 cm2
BL 17.5 N/A
Vas 80.2 ltrs
Xmax 12.5 mm peak
Voice Coil Ø 51 mm
Sensitivity
2.83V / 1m 88.4 dB
Power (IEC) 300 watt
I have an basic idea for the folding (which are sketchy at best, get it
) although it looks more like a transmission line, i was just getting an idea of the
horn path length.
I posted here because of the excellent level of knowledge and experience and helpfulness, that i have see.
Thanks John.
I want to build two, each with one woofer, size wise i am looking for around 120cm by 100cm by 35-40cm, smaller would be better.
For a tune is was thinking 15-18Hz low knee (if thats the right term!), I have built many other subs in the last few years, mostly ported and some sealed, i cannot figure out horn response at all, winISD no problem, but its not applicable for this build.
Here are the Parameters (spec not measured)
Znom 8 ohm
Re 3.4 ohm
Le 4.3 mH
fs 18.6 Hz
Qms 2.66
Qes 0.18
Qts 0.17
Mms 139.3 g
Cms 0.52 mm/N
Sd 333 cm2
BL 17.5 N/A
Vas 80.2 ltrs
Xmax 12.5 mm peak
Voice Coil Ø 51 mm
Sensitivity
2.83V / 1m 88.4 dB
Power (IEC) 300 watt
I have an basic idea for the folding (which are sketchy at best, get it
) although it looks more like a transmission line, i was just getting an idea of thehorn path length.
I posted here because of the excellent level of knowledge and experience and helpfulness, that i have see.
Thanks John.
Attachments
Greets!
I simmed both sets of specs and virtually no difference even with the big difference in inductance, though of course the proof is in the building/measuring.
Anyway, not a lot going on at rated power down low, though two subs not too far apart will sum at the long WLs, so combined with a bit of room/boundary gain they should be OK for all but a few movies and pipe organ symphonies unless a high pass is used to protect them. Overall though not too shabby for only ~149 L net.
As you can see in the sim, it's already a little under-damped, though from others measured builds it should be somewhat smoother in reality, so this driver's specs doesn't really want to 'feel' anywhere near a 10 ft^3 cab without either adding some series resistance or tuning it lower. Of course you can always double each section's area to get your 10+ ft^3 net or some other net Vb by using whatever fraction is required.
GM
I simmed both sets of specs and virtually no difference even with the big difference in inductance, though of course the proof is in the building/measuring.
Anyway, not a lot going on at rated power down low, though two subs not too far apart will sum at the long WLs, so combined with a bit of room/boundary gain they should be OK for all but a few movies and pipe organ symphonies unless a high pass is used to protect them. Overall though not too shabby for only ~149 L net.
As you can see in the sim, it's already a little under-damped, though from others measured builds it should be somewhat smoother in reality, so this driver's specs doesn't really want to 'feel' anywhere near a 10 ft^3 cab without either adding some series resistance or tuning it lower. Of course you can always double each section's area to get your 10+ ft^3 net or some other net Vb by using whatever fraction is required.
GM
Attachments
Hi,
As NEO Dan said:
http://www.diyaudio.com/forums/subwoofers/181324-peerless-xls10-2.html
see: Post #19 for a Hornresp Input screen using the geometry from the TH-SPUD. For a single driver tapped horn divide the areas by 2 and maintain the length.
Regards,
As NEO Dan said:
http://www.diyaudio.com/forums/subwoofers/181324-peerless-xls10-2.html
see: Post #19 for a Hornresp Input screen using the geometry from the TH-SPUD. For a single driver tapped horn divide the areas by 2 and maintain the length.
Regards,
Thanks for the input guys, very helpful.
Thats looks like some pretty decent Spl for a 10", in terms of physical layout of the horn and folding, was there a copy of the spud diagram that i could copy in terms of path length, and just adjust the cross sectional area, as i am only using
a 10" single, vs two 12" drivers?
Would 15mm ply do for this build or is 18mm a must?
Thanks again.
Thats looks like some pretty decent Spl for a 10", in terms of physical layout of the horn and folding, was there a copy of the spud diagram that i could copy in terms of path length, and just adjust the cross sectional area, as i am only using
a 10" single, vs two 12" drivers?
Would 15mm ply do for this build or is 18mm a must?
Thanks again.
Hi,
The Input screen in the link above, Post #19, is for two 10" 830452, I think.
As to a layout diagram, see Post #30:
http://www.diyaudio.com/forums/subwoofers/134369-dual-8-tapped-horn-th-spud-3.html
And yes, for a single you maintain the length, and divide the areas by two. You can still play around with it in Hornresp, and see what you come up with.
Regards,
The Input screen in the link above, Post #19, is for two 10" 830452, I think.
As to a layout diagram, see Post #30:
http://www.diyaudio.com/forums/subwoofers/134369-dual-8-tapped-horn-th-spud-3.html
And yes, for a single you maintain the length, and divide the areas by two. You can still play around with it in Hornresp, and see what you come up with.
Regards,
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