First build - Octo SI 18's with flat packs. - Page 9

Thanks Fatshaft and Electrodynamic (are you Nick?). I do have to say though, yesterday morning when I went to look at them again I could see all kinds of little blemishes that I didn't see the night before. Nothing like bright sun light coming in the room to expose any problems. I even found some brad nail holes in a few spots. However, it won't matter down in the basement and I'm totally satisfied with how they turned out.

Ok, here is one for you guys. I stacked all 8 in the front corners, 4 per corner and then realized I didn't have another rca to xlr cable so I was bummed thinking I couldn't fire up all 8. I called Kevin and he said to switch the back of the amp to parallel (it was on stereo) and then both sets of subs will get the same signal, which they will anyway until I get the sms-1 so it won't matter.

Here's the issue. When I did that and turned them all on for the first time I could hear a distinct rattling sound that sounded like it was coming from the drivers them selves. It wasn't real loud but still easy to pick out when all the speakers are off. So, like usual, I panicked thinking I'd screwed something up. I had something to do last night so I didn't get a chance to do anymore playing around until this morning.

So all evening/night I was under the impression that my subs rattle and I'm screwed. It drove me crazy and I even had bad dreams about it... which sucked because I'd wake up and realize it wasn't just a dream my subs do rattle!!

Well, just now I tried the subs back in stereo so that only 1 set of 4 is playing at a time - no rattle whatsoever from either set of 4 when I moved the xlr cable back and forth. However when I switched back to parallel and tried all 8 again, there it is the rattle is back. Any idea what is going on? Sounds like it's an easy fix, all I need is another rca to xlr cord.

I called radio shack last night and they said they don't have them (not that it means they really don't they are clueless) do you guys know where you can buy one from a store?

You should have seen the look on my neighbors face when I enlisted him to help me stack the final 4th sub on top for each corner. He did however say before he left that he wants a demo sometime. I asked him if he ever heard bass from my house (he's in the house to the left if you are facing mine so he's very close) and he said he never had. I told him that might change and he shrugged and said he didn't mind. Nice guy, in his 60's thank goodness he's still pretty strong.

Sweet!! Found a store that sells them, Guitar Center in Overland Park. Sucks they don't open until 11:00 I'm anxious to unleash these things!

Funky Munky music opens at 10:00, website doesn't say if they have them but I'll try them out first since they are right by me.

Well, there's my answer - thanks. My doors, especially the one at the top of the stairs, rattled like crazy from the time I bought my first Captivator but it also rattled with my wimpy SVS sub. If you are getting no rattle with 3 18's and 2 12's that's good enough for me. How much does a solid door cost?

Thanks edogg, I just now saw your posts. Any idea why I'd get rattling running the amp in parallel and not in stereo?

Thanks ack!

I do measure with 5 db increments and all my curves are saved that way but for some reason when I take a snapshot so I can post a picture of a graph it switches to 10 db increments. I had that happen before and someone told me how to fix it but now I can't remember.

I'm going to do one Omnimic measurement without speakers just to compare to my measurements with 1 sub, and 4 subs (2 stacked each corner) to see who much increase I get. After that all measurements will be with speakers on too.

Uhhhh I hope that New Madrid fault in Missouri doesn't go crazy any time soon. An earthquake would be very bad right now.

Hey James, yeah 1 gallon did all 8 of my boxes. I bought 2 gallons and have an extra, I could sell you the other gallon - I haven't even opened the box.

The cost new for me was 52.50 + 16.62 shipping each box. I could look up the fedex calculator on this box I have and come up with a price if you are interested.

Yup, beautiful.

Well, I went to guitar center and bought 2 more rca to xlr cables. I went back to stereo mode on the amp and the rattle is gone!!

Unfortunately I have a nice buzz on the set of subs using the new xlr cable. I tried the other one, same thing.

Does anyone know where Mark Seaton gets his rca to xlr cables? The seem to do a better job and not having any hum.

Ok, measurement time here shortly. I just cranked some ACDC Hells Bells with no speakers hooked up and it sounded like my room was going to come apart. The -10db light on the amp was only flickering and the drivers aren't moving much. This is going to be ridiculous!!