Bill Shakes
I just received an sms-1 from my pops that he had laying around after selling off his 2 channel system.

I've connected a lot of stereos and pro audio gear but I have suddenly gone mental in trying to hook this thing up. I've got a single Rca that goes from receiver to the sms, then the xlr from the sms to the sub. No audio in set up mode. Hook up an output from sms to an input on reciever boom I have tones. After trying to tune for about 20 minutes I realize the tones are from my mains only, lol. The only way I can get test tones in manual set up is plugging an rca out that's NOT a sub out to the submersive. And the tones are maxed volume with a slight dip around 100 even if I turn the sms down to like 4. What the hell am I doing wrong here. Anyone have a crappy drawing of inputs And outputs they are using?

The manual for this thing is the worst manual I've ever read. "Plug rca from the accessory pack into this input" and plug it into what!? Clowns
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Mark_Seaton
Hi Bill,

It sounds like you might have the main speakers set to large and/or no sub engaged in the mode you are using during testing.  Set the receiver to Dolby PLIIx *Movie* mode, and make sure your main speakers are set to your intended crossover (set to 80Hz for setup).  The SMS-1 generates a stereo test signal which has to route through your receiver and back through the SMS-1.
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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Bill Shakes
Ahhhh, the receiver is using the audessy xt32 that I ran so I'm not sure how the fronts are set up. I think I'll shut audessy off, do what you said, then rerun audessy with no sub. I wish there was a way to look at all the audessy settings, then shut it off and do your own tweaking to it like you could do with the Yamaha YPAO. I'm running a Denon 6200 for this now.

need to wire like this; Click image for larger version - Name: sms.jpg, Views: 158, Size: 75.95 KB
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Bill Shakes
Ok, got it tuned in. Not a bad curve for a 16x32 room with tile floors, and a kitchen at the other end, also there are three big leaky hallways off the main room.

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Mark_Seaton
Bill Shakes wrote:
Ok, got it tuned in. Not a bad curve for a 16x32 room with tile floors, and a kitchen at the other end, also there are three big leaky hallways off the main room.

1.jpg 


Hi Eric,

I'm sure what you have there sounds rather impressive and should get plenty loud.  If you want to experiment with a different approach and possibly pulling more bottom end, here are a few suggestions.  Start by saving this setting to one preset and experiment on another so you can compare and not loose what you did here.

First, remember you have the option to move any of those sliders left to right in frequency and change the width, not just the boost/cut.  Can you post the curve with no EQ?  Taking a guess from the slider positions, I would recommend setting the PGM SEL button on your SubMersive to the OUT / program 2 position and zero out the sliders/EQ to start fresh.  Now set the 80Hz slider to very narrow/deep cut and move it up/down in frequency to best smooth the upper peak.  Next see about setting 1-2 broader filters to pull down the 30-60Hz range.  You may still want a 2-5dB boost in the low 20s.  You will have to make adjustments to the overall level as this will be lower in level than what you had before.
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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Bill Shakes
I was pretty happy with what I got. I did have to change the Q on a few of them around the 60-80 range. I just snapped that pic after I got out of that small menu. I'm in the process of replacing the couches and other stuff in that room so I will be redoing it here in the next couple of weekends. for the short term it is how it will be until them. My tv has no rca video in so I had to steal the one from my daughters room to set it up, lol. I will post some more pics of everything when its all done. And yes, the volume was turned way down for that pic. Headroom is not a problem. For fun I cranked the volume when it was doing the sweeps and Im sure my neighbor whos house is on the other side of that wall was like WTF is going on!?

One thing though, I would have thought the bigger the number on the Q setting, the wider it would have made the bell, seems to the opposite and ended up running anywhere between 4-6.5 on the q scale. It got worse with diminishing returns anything over 10.
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Mark_Seaton
Bill Shakes wrote:
I was pretty happy with what I got. I did have to change the Q on a few of them around the 60-80 range. I just snapped that pic after I got out of that small menu. I'm in the process of replacing the couches and other stuff in that room so I will be redoing it here in the next couple of weekends. for the short term it is how it will be until them. My tv has no rca video in so I had to steal the one from my daughters room to set it up, lol. I will post some more pics of everything when its all done. And yes, the volume was turned way down for that pic. Headroom is not a problem. For fun I cranked the volume when it was doing the sweeps and Im sure my neighbor whos house is on the other side of that wall was like WTF is going on!?

One thing though, I would have thought the bigger the number on the Q setting, the wider it would have made the bell, seems to the opposite and ended up running anywhere between 4-6.5 on the q scale. It got worse with diminishing returns anything over 10.


Not all, but most receivers will take in an RCA video input and transcode/scale it to output over the HDMI output.  Might want to try it.

The Q of a filter relates to electrical filter design and the "quality factor" of the filter.  This is a general term from many fields where the idea is that a high quality factor, or Q, has high selectivity or rejection of the frequencies not at the center frequency.  This means high Q = narrow filter.  Some electronics also allow input in terms of bandwidth, usually in terms of octaves.  Here a higher number does equal a wider filter that covers more frequencies.
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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