After reading all of the reviews of LilMike's LilWrecker I decided I needed to build one for my family room but I would need to make it "blend in" with the furniture a little better to get my wife's approval. The plan was to make it the base of a new entertainment center like this:
This would require re-folding the horn. I tried to keep my "S" and "L" parameters as close as possible to the LilWrecker's and the minor changes made almost no difference in HornResp. Here is the simulated frequency response (pink is my modified design, grey is the standard LilWrecker):
My re-folded design ended up looking like this (the notch in the center is to allow me to put our center channel speaker directly under the TV):
So... I built it over the last few weeks. I used Baltic Pirch Plywood (mostly 1/2" thick, a few panels 3/4" thick) and lots of PL Premium. Here are all of the pictures I have (I really meant to take more but I was very excited to get it finished):
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The last picture shows the current status/location (standing up in the middle of the garage). I installed the Alpine SWS-15D4 and hooked up the iNuke 3000DSP and so far have been very disappointed with the performance. I have tried wiring the driver in series and parallel (8 and 2 ohms) and it doesn't seem to make much difference (I don't think amp power is the issue). I have a 20hz high-pass filter and 100hz low-pass filter set up on the iNuke and I currently have the gain (in the x-over menu) set at +6dB.
I can get quite a bit of excursion from the driver, it just doesn't seem to translate to very much sound. I feel like my old 100W Infinity 12" sub that is currently in the family room is louder and cleaner sounding. I'm hoping this is due to it's placement in the garage but it's hard to imagine that would have such a huge effect. My next step is to move it into the family room (just need to get a friend or two over to help me) to see if that helps. I also ordered a UMIK-1 that should be here sometime this week so I can get real measurments.
I guess I'm posting to see if anyone has any ideas of what could be causing my disappointing performance. Settings in the Amp? Driver wiring? Something obviously wrong in the cabinet design/build (I really don't think I have any leaks but I am planning to check again more thoroughly). Also, please let me know if there is a specific test I can do to help figure out the problem (once the UMIK-1 arrives) please let me know. I really appreciate any help you guys can give me.
P.S. - I'm sure I left out some details so please don't hesitate to ask any questions you may have. Thanks!