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midbass horn with 2226 [message #16448]

Tue, 11 May 2004 16:54

andreas paulsen
Messages: 50
Registered: May 2009

Baron

Hi All

Does anyone has a good suggestion on bridging the gap between the Labsub and waynes midrange horn?. I am contemplating a front loaded 100Hz horn using a 2226 15" jbl as they are at hand. the 2245 is also a possibility but its not the first driver which comes to mind when one says "midbass".

Cornerhorns are definately a possibility and such is the Pi-10, albeit its rather large for a midbass horn.

Cheers
andreas

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Re: midbass horn with 2226 [message #16451 is a reply to message #16448]

Tue, 11 May 2004 23:05

Wayne Parham
Messages: 18791
Registered: January 2001

Illuminati (33rd Degree)

The main advantage of the ten π is that it works well at high frequencies, so compression driver midrange horns can be used at the crossover point. Its two reflectors are each angled so that high frequencies are directed out the mouth, but you're right, that makes it large. You don't need to crossover all that high if you're using a large-format cone-driven midrange horn, so you can use a much smaller horn with tighter folds instead.

I suggest you might check with Mike E because he's built physically small 40Hz horns using the JBL 2226. Seems like he's made several models (both computer and physical) of 40Hz horns that use the 2226 and in cabinets no larger than 8ft3, maybe smaller. I'd expect them to work well in the application you've desctibed, from 40Hz to 300Hz or so. John Sheerin has also made a 40Hz horn for the 2226, so you might ask him about it. Maybe those guys might share their ideas with you.

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Re: midbass horn with 2226 [message #16456 is a reply to message #16451]

Wed, 12 May 2004 15:18

andreas paulsen
Messages: 50
Registered: May 2009

Baron

Yes I have seen Mikes and johns horns, looks interesting. I mostly have been thinking about a straight horn though. But I realise that I probably are planning to far ahead. But imagine a system with a labsub, midbass horn with 2226, Pi midrange horn with 2012 and finally stageaccompany ribbon (prob with horn extension). I have most of the parts and amplifiers, but I am sincerely lacking room for such a monster of a system

Cheers
andreas

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Re: midbass horn with 2226 [message #16457 is a reply to message #16456]

Wed, 12 May 2004 15:39

Wayne Parham
Messages: 18791
Registered: January 2001

Illuminati (33rd Degree)

Yeah, that's a monster. Your midbass horns will need to be five to seven feet long if they aren't folded. I'd probably not limit myself to a straight horn when the upper frequency requirement wasn't high. But it would be a great horn though!

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Re: midbass horn with 2226 [message #16459 is a reply to message #16457]

Thu, 13 May 2004 02:28

andreas paulsen
Messages: 50
Registered: May 2009

Baron

Hmm it might be pleasing to the eye, if the midbass horn shared the same size as the labhorn, might just be doable. Hmm.

Cheers
andreas

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Re: midbass horn with 2226 [message #16460 is a reply to message #16459]

Thu, 13 May 2004 03:03

Wayne Parham
Messages: 18791
Registered: January 2001

Illuminati (33rd Degree)

What about crossing over directly from the basshorn to the midhorn without a midbass in between? Cluster a couple in a tight array and they will do nicely.

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Re: midbass horn with 2226 [message #16461 is a reply to message #16460]

Thu, 13 May 2004 04:20

andreas paulsen
Messages: 50
Registered: May 2009

Baron

Nice idear Wayne, you mean cluster a couple of midrange horns i presume?. The Labsub does not feel really well above 150 (pref 100) Hz.
However the idear was to make a hifi system, albeit a rather large one. So i dont know about a cluster in such a situation.
Maybe i should think about a folded horn anyway (or Writing up my PhD thesis, which is what i should do!)

cheers
andreas

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MTM Pi midhorns [message #16463 is a reply to message #16461]

Thu, 13 May 2004 08:13

andreas paulsen
Messages: 50
Registered: May 2009

Baron

How low du you presume the lower cutoff will be on two midhorns in an MTM arrangement, with approximately 6" between each horn ? Just room enough for the SA tweeter.

cheers
andreas

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Re: MTM Pi midhorns [message #16464 is a reply to message #16463]

Thu, 13 May 2004 12:11

Wayne Parham
Messages: 18791
Registered: January 2001

Illuminati (33rd Degree)

Being this close, they'll act as one unit at the lower crossover point. Wavelengths are several feet long under 300Hz. The horn goes down to 200Hz radiating 2π and 150Hz radiating π or π/2.

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Re: MTM Pi midhorns [message #16465 is a reply to message #16464]

Thu, 13 May 2004 13:22

andreas paulsen
Messages: 50
Registered: May 2009

Baron

Thanks Wayne, i have difficulties grasping the effect of clustering several horns. Do you mean the horns should be further apart to go down lower, or should one cluster fx 4 horns to extend response.

cheers
andreas

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