TH-18 Flat to 35hz! (Xoc1's design)

hi all i am new in this thread. just wondering whether xoc1 design is better than this design folding which reaches 35hz . i have built the below but loaded it with an 18inch driver
 

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thanks jacob

more files for the project
 

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Hi Stewin,

Is this the cab designed by wood1y?

The first thing I notice from your response plot is the ~10dB difference from 40Hz to 30Hz. Whereas the difference is only ~4-5dB with the TH-18 when using the 18SW115 (of course there are other drivers that work very well - this is just for example's sake). Was any processing used (HPF) in that response plot?
 

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Last edited:
Hi Stewin
First thing to ask is if you are using a Hi-Pass filter for your tapped horns?
The high pass filter is needed for any tapped horn design!
Regards Xoc1

yes i am using the linkwitz riley active 24 db crossover up to 110hz or the below two schematics .

>>>one is a schematics for subs only i found on the web
>>>the other is a 24db i designed using the linkwitz 24db calculatorhttp://sound.westhost.com/project09.htm#download_esp_lr Linkwitz-Riley Electronic Crossover to fit my needs to cut the frequencies below 35hz and above24khz so as to get maxx spl out of drivers.

i always use active crossover with the subs
 

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Yeah, we'd have to throw a show together and make the trip worth it :scratch2:
Five 18" TH and two 15" TH shouldn't make a boring show 😉

I'm using the SW100 in my set.
Had a gig on Saturday night and used a TH115 and a TH118 together used Crown xti 2000's with both subs and the result was very nice you can really hear the 25Hx-40Hz increase with the TH118 low end punch was even more amazing in fact I played "Bust a Move" and I had to back off the volume the widows were seriously rattling so bad they would have cracked for sure.😱