OFFICIAL Hsu MBM-12 thread - Page 10

Originally Posted by bsoko2

cyberbri haven't heard from you in awhile, as for the rest of you on this thread, cyberbri knows his stuff so pay attention!

Bill

Originally Posted by cyberbri

Hey! Yes, been very busy with work, to say the least. Plus, hanging around here too much makes me want to upgrade my system (or my subs at least).

Originally Posted by cyberbri

REW, running tones through the receiver, measuring with the meter (on a tripod) and reading out on the screen, is much more accurate than Avia. When you use REW and measure with the meter, you get very accurate readings. With Avia and reading the meter manually, you get a much less accurate picture of what is going on.

Would putting a door between the Den & kitchen help the room to pressurize & get the hit in the chest feeling I am lacking? Open to all suggestions.

Originally Posted by Scottfox

I have had my VTF2.3 for almost 2 years. I've been happy with it, but I'm not getting that hit in the chest feeling others talk about. Considering adding MBM-12, though it's an expensive "add-on". Also considering selling the 2.3 & switching to MFW-15 or new SVS PC12-nsd. Any suggestions? Is there anyone out the in D/FW land with an MBM that can do a demo for me?
I've been to a couple of homes with a dedicated home theater, & was blown away at how hard they hit. Both large rooms, 1 had dual MFW's the other dual Epik Towers. When WOTW played and the road split open B4 the Pod emerged, I thought the floor of the HT room was going to split with it

My room is 11 x 19 x 9 and has an openeing in the rear right corner to the kitchen. I have older Polk Monitor 10's as my mains. Pioneer VSX-816 receiver with Xover set at 80. Is the VTF2.3 not enough sub? I've tried 1 port & 2. Single port starts to chuff with deep effects, so I have both open for max output. Would putting a door between the Den & kitchen help the room to pressurize & get the hit in the chest feeling I am lacking? Open to all suggestions.

Originally Posted by Scottfox

I have had my VTF2.3 for almost 2 years. I've been happy with it, but I'm not getting that hit in the chest feeling others talk about. Considering adding MBM-12, though it's an expensive "add-on". Also considering selling the 2.3 & switching to MFW-15 or new SVS PC12-nsd. Any suggestions? Is there anyone out the in D/FW land with an MBM that can do a demo for me?
I've been to a couple of homes with a dedicated home theater, & was blown away at how hard they hit. Both large rooms, 1 had dual MFW's the other dual Epik Towers. When WOTW played and the road split open B4 the Pod emerged, I thought the floor of the HT room was going to split with it

My room is 11 x 19 x 9 and has an openeing in the rear right corner to the kitchen. I have older Polk Monitor 10's as my mains. Pioneer VSX-816 receiver with Xover set at 80. Is the VTF2.3 not enough sub? I've tried 1 port & 2. Single port starts to chuff with deep effects, so I have both open for max output. Would putting a door between the Den & kitchen help the room to pressurize & get the hit in the chest feeling I am lacking? Open to all suggestions.

Originally Posted by lefthandluke

well...just ordered one mbm-12

i've been following this thread for a while with much interest...

looking forward to experimenting with this sub...no doubt i'll be asking for advice

Originally Posted by Ryan W

I ordered mine today sealed. It was a $50 charge. I think that overall the sealed is more flexible for placement. The retool it apparently to adjust for the difference from sealed vs ported. The rep I spoke said I would be one of the very few people to have a sealed model. So I will share my thoughts when I get it.

Originally Posted by stevegamble66

I have a Question regarding hook up of my 2 MBM's.

I'm using my sub out(LFE) and have it running 50-160hz (w/receiver). I tried using my Output on my true sub, which is high passed at 80hz so I'd get >80hz to 160hz
felt a little boomy.. when I allowed it to play all of the 50 or <50 up to 160hz it was better. I also tried 200hz LFE out. affected dialog a bit too much.. I'm still experimenting.
New room set up, so a Lot of calibrating to do. (14speakers) 11.5 x 20 room. 7.5' ceiling.

Q.
What IF.. I run my LFE to one input.. and my Front Right (pre out) to the MBM by the front right speaker.
+ I run my LFE to one input.. and my Left Front (pre out) to the MBM by my Left front speaker.

This way.. when in a movie the producer has a 63hz? sound effect running on the left side... missed by right or LFE ? I pick it up on the right side and add realism to the scene as I'd be getting enhanced effect of what was shown in the theatre...sorta?



http://photobucket.com/steveshometheatre

Still under reno's... new stage front to come this weekend.

Originally Posted by stevegamble66

Sounds good.. I had to read that twice.. but I got it.

Now if I were to switch my fronts to small and use pre out R / L receiver XO @160hz.
Would that give me the same thing?
Or ,the receiver would pass the the <160hz ALL to the LFE ?
None to pre out R/L.

Originally Posted by John H

Ryan W,

Have you received your sealed MBM-12 yet?

John

Originally Posted by cyberbri

If you set the receiver XO to 160Hz, you will need the MBMs hooked to the LFE out. Otherwise, if you have them hooked to the mains, they will only get bass down to 160Hz since they would be part of the chain for the main speakers.

If you have the MBMs as part of the LFE chain, then you are good to raise the XO in the receiver up to 150~200Hz (make sure the MBMs are up front, close to the speakers, the higher you go). If the MBMs are hooked to the main speakers, then the receiver XO should be 50Hz or wherever you want to crossover between the MBM and the main sub.

But if you hook the MBMs to the mains, don't use the analog pre-outs, for the reason I mentioned - if you do use the pre-outs, you'll have the speakers playing that same bass as the MBMs, which could possibly cause cancellation and phase effects. You want the MBMs to be the only ones playing that range.


As to your other question, about which would sound better... There are trade-offs.

If you have an MBM hooked to the left/right mains, then you can get added benefit of the stereo / directional bass. There's often bass sent to the main channels, not just LFE. So you could get more of the effect of it coming from the speaker it was intended to come from.

On the other hand, having the MBMs hooked to the mains means that the MBMs don't play any of the 50Hz+ bass present in the LFE track (which can go up to 120Hz). So in this case the main sub would be playing 50Hz and below from the signal re-routed from the rest of the speakers, plus the full LFE signal (don't engage the main sub's internal XO in this setup case, because you'll filter out this LFE-only bass above 50Hz).

Hope that makes sense.

Originally Posted by Pete - Hsu

Hi everyone,

I just wanted to give you some advance notice about an exciting new product announcement regarding MBM-12. To start, I would like to mention that we only have extremely low quantity of vinyl black MBM-12's in stock right now, and it will be several months before the MBM-12 is back in stock.

So you may be wondering, why will it take several months to re-stock MBM-12?

The answer to this question is that we have decided to re-design the MBM-12 and release a newer version later this year.

The new MBM-12 will have the following features:

1) Variable tuning capability! One can simply add or remove a supplied 4" foam port plug and flip a bass extension switch on the amp to switch between 'Sealed' or 'Ported' Mode

2) Wireless connectivity option will be available! This will make it much easier to position the MBM in the nearfield without running subwoofer cables across the room.

3) New finishes will be available! Standard finish will be Satin Black, and several luxury finishes will be available as well


So this unit will be perfect to use with the ULS-15, or any of our other true subwoofers. Price is still to be determined, and will have to go up a bit, but hopefully not too much. The size and shape and orientation of woofer/port will still be the same as the current MBM-12, but with all the changes mentioned above.

I am really excited about this unit, and hope you will be too in the months ahead!

Originally Posted by ccarzoo

If I have all of my speakers calibrated to 75 on the spl meter, with corrections, all of my frequencies are very close to 75-77. When you guys say running the sub hot, what exactly does that mean. If I calibrate to 75 I have to jack my master volume to 0 sometimes into the plus region of my Onkyo 804 to get the bass I desire. Is this damaging my sub? I can keep the volume at -10 but i turn up the bass +4 dbs in the receiver's sub output. Is this considered running too hot?

Originally Posted by gnocchi

What will the difference be when using the port plug in the new MBM-12, sound wise?

Originally Posted by Pete - Hsu Research

The situation where I can see the sealed MBM being more advantageous than the ported MBM is when the MBM is located very close to the true sub. The low frequency rolloff of the sealed MBM will match perfectly with the high frequency rolloff on our true subwoofers (when using the built-in low pass crossover network on the true subs), so they would theoretically blend better.

Originally Posted by Pete - Hsu
Hi everyone,

I just wanted to give you some advance notice about an exciting new product announcement regarding MBM-12. To start, I would like to mention that we only have extremely low quantity of vinyl black MBM-12's in stock right now, and it will be several months before the MBM-12 is back in stock.

So you may be wondering, why will it take several months to re-stock MBM-12?

The answer to this question is that we have decided to re-design the MBM-12 and release a newer version later this year.

The new MBM-12 will have the following features:

1) Variable tuning capability! One can simply add or remove a supplied 4" foam port plug and flip a bass extension switch on the amp to switch between 'Sealed' or 'Ported' Mode

2) Wireless connectivity option will be available! This will make it much easier to position the MBM in the nearfield without running subwoofer cables across the room.

3) New finishes will be available! Standard finish will be Satin Black, and several luxury finishes will be available as well


So this unit will be perfect to use with the ULS-15, or any of our other true subwoofers. Price is still to be determined, and will have to go up a bit, but hopefully not too much. The size and shape and orientation of woofer/port will still be the same as the current MBM-12, but with all the changes mentioned above.

I am really excited about this unit, and hope you will be too in the months ahead!

Originally Posted by cyberbri

If you calibrate the speakers and sub to 75dB, then the sub is already 2dB or so "hot" (above the level of the speakers) because the meter is less sensitive in the bass region.

What equipment do you have, and how are you calibrating? Are you running a disc through the player you normally use? You may have to set the receiver up to add 10dB to the LFE signal, sometimes tricky with new players and HDMI.

Most people cannot turn up the receiver to "0" or higher without it being uncomfortable to listen. So you either have a 10dB setting issue, or the sub is just in a really bad location so you're getting a big peak or two that throw off the whole calibration and make it sound like there's not much bass. You can certainly turn up the sub 4 notches in the receiver, but I recommend to you try to get to the bottom of the issue before you just turn up the sub volume.

Originally Posted by ccarzoo

Sonance in wall thx select 7.1 speakers, Onkyo 804, Sony BDP 550 using analog outs to receiver. HSU 3.3 with turbo farfield in 5000 cubic foot soundproofed basement, mbm nearfield behind couch.

Originally Posted by cyberbri

Definitely run a test disc like Avia or DVE through the player, to check the decoding and LFE signal. You may need to boost the LFE +10 in the receiver (or the player if it has that option) since you are using 6-chan analogs.