Powered by say a Hypex FA501.
Around 300 Euro or less.
I've been eye'ing:
B&C 18TBX100 and RCF LF18G401
Around 300 Euro or less.
I've been eye'ing:
B&C 18TBX100 and RCF LF18G401
Attachments
Last edited:
With your moniker, the better question in my mind is: what driver would you choose for your app since an OB is the inverse of a bass horn? 😉
Have you considered the resonance frequency of this kind of enclosure? It's dependent on the depth of the cavities. An 18" will push the resonance down to around 150Hz. If the openings are small (like you have drawn them) compared to the depth the resonance will have an elevated Q (meaning peaky) and you typically have to cross over well below that, e.g. 80Hz.
The other concern is that if you use one 18" driver in this kind of setup there will be a lot of vibration. Better would be two 15s operating in opposite directions. Is there any particular reason why you want to use a single 18?
Anyway, if you were in the US I would recommend this driver:
IB3 Series - IB318 v2 | Fi Car Audio
I'm not sure how expensive shipping would be to your location, but it's probably not cheap. The driver does fit within your budget.
Last edited:
Hi Erik,
They are to augment my open baffle Bastanis. (I have active sub 15" closed box) But I want to add the 18 inch dipole subs as Bastanis offers already. I just don't have the moolah to get the "official" units.
The current subs are set to a low pass 90Hz. So these will be similar.
They are to augment my open baffle Bastanis. (I have active sub 15" closed box) But I want to add the 18 inch dipole subs as Bastanis offers already. I just don't have the moolah to get the "official" units.
The current subs are set to a low pass 90Hz. So these will be similar.
Attachments
Basically because it is a proven concept for the bandwith it is aimed at. See pic of the dipoles Bastanis sells.
Basically what Bastanis designed them for. I made my baffles for the widebands a little wider...so 80Hz seems fine to me.
Attachments
Last edited:
Looks like most constructions from Bastanis are ripoles.
Did you consider these:
SB Audience Bianco 18SW450 - first impressions (open baffle)
12-18" in the series and quite reasonably priced.
Did you consider these:
SB Audience Bianco 18SW450 - first impressions (open baffle)
12-18" in the series and quite reasonably priced.
If the magnet vent cannot breathe, stick the magnet through a hole in the cabinet panel. A and B in your image do not have to be equal.
Note that pro audio woofers are not designed to have silent motor ventilation. They might chuff. Probably they will chuff, because turbulence improves heat transfer.
Note that pro audio woofers are not designed to have silent motor ventilation. They might chuff. Probably they will chuff, because turbulence improves heat transfer.
Last edited:
Hi Bas,
For not too much money, after having simulated a lot of drivers with AJHorn for OB (but not necessary ripol) applications, the Eminence Delta pro 18-c gets my vote, although I have to admit that I never tried this driver in reality, but a few others. This would be my next one to try wouldn´t I have my AE18.
Groetjes
Mattes
For not too much money, after having simulated a lot of drivers with AJHorn for OB (but not necessary ripol) applications, the Eminence Delta pro 18-c gets my vote, although I have to admit that I never tried this driver in reality, but a few others. This would be my next one to try wouldn´t I have my AE18.
Groetjes
Mattes
A rather high q (>0.50, and a low enough fs and high enough xmax for your need is what you need.
The Peerless FSL-1830R06-08 is a good one, or the too expensive AE Dipole18.
The Peerless FSL-1830R06-08 is a good one, or the too expensive AE Dipole18.
The parameters of the peerless 18" look like it's incredible value. Probably would get one if I had to start all over again.
But having bought an A&D R1524, which is 15", I know I really don't need more cone area, or displacement volume. That thing hardly moves!
18" Peerless or 15" SB, if I had to choose again.
But having bought an A&D R1524, which is 15", I know I really don't need more cone area, or displacement volume. That thing hardly moves!
18" Peerless or 15" SB, if I had to choose again.
I know a guy who use a pair in a ripole sub, and he could not be happier with it. Your box is similar of layout and working, but single driver, so i guess it could work. And 91dB efficiency is not that bad if it can handle 700w (RMS) i think, at least for hifi use.