Using VMPS speakers in built in Cabinates....

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Deven

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Using VMPS speakers in built in Cabinates....
« on: 9 Oct 2004, 05:07 am »
I had followed the VMPS discussion on the Harmonic Discord web site till last year (I did get a pair of RM40 and LRC), but have not kept up with recent events till I stumbled on this site. I am in the process of putting together a Home theater room (with VMPS all around), and also have 7.1 in my family room. I plan on having built in cabinates there (for that clean look), and I will need to have speakers that can work in an enclosed space in the cabinates for the front three and subwoofer.

My question is weather any of the VMPS speakers can perform adequately in an enclosed cabinate? I was not planning on putting the RM40's there (unless it is feasable), but I was hoping to put the LRC there (and then get the RM30 center speaker for the other room) then match the center with the 626 or something like that.

The last issue will be getting in-ceiling speakers for the sides and rears, and I was wondering if anyone had suggestions for speaker types that would match the VPMS (unless VMPS has a solution for in-ceiling speakers?). Not that I am averse to trying other speaker brands, I have been happy with the RM40's and figured why not stick with the same company for the entire house.

Thanks in advanced.

Deven

lkosova

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Using VMPS speakers in built in Cabinates....
« Reply #1 on: 10 Oct 2004, 12:31 pm »
There will be many different views on this and what you are listening to (movies vs multichannel) but I think the RM-30m's are the best bang for your buck. Sounds like the Rm-40's but with better imaging. The RM-30 c has been a better choice as a center speaker and blends much better then the lrc and diagloge is improved.

VMPS has the dipole ribbon as a "on wall" or "inwall" speaker but not an inceiling one.

I have my RM-30's in an enclosure not a cabinet per se and it works very well and I think might have some advantages. I would be very careful about putting any speaker in a cabinet that you do not have enough room to move around and position. My enclosure has a removable front that is flush with my screen wall and is very neat looking. I only have the "front removable " on when the kids are around. I listen to them with this and the real grills off. I use Guilford of Maine acoustical material like 701 black etc if you choose to leave this on. This gives it a "flush" built in look but with the ability to move the speakers back and forth and side to side and I can angle them as I wish.

If using a real cabinet then don't use the 626r do to rear port and I would not use really most speakers in this configuration.  With Rm-30's you are able to put right against the wall.

Others might give their experience with speakers in built in cabinets,

Do you have any pictures of the cabinet?????

Larry
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ctviggen

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Using VMPS speakers in built in Cabinates....
« Reply #2 on: 10 Oct 2004, 01:25 pm »
Larry,

Do your RM30s have the side-firing woofers?  If so, does placing them in a cabinet/enclosure affect the sound?

lkosova

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Using VMPS speakers in built in Cabinates....
« Reply #3 on: 10 Oct 2004, 02:15 pm »
Great question.

I will need to find my digital and show you.

 This is a screen wall for my home theater/music room. The walls and ceiling of the screenwall are covered with John Mansvilles theater sheild. I have the Rm-30m with the woofs pointing out and the vertical rm-30c in the middle.

 I am about 21 inches from the back wall and 12 from the sides...I listen in a triangle with the speaker about 9 ft to me  and the leading edge is 9 ft to each other and I have the first row with the speakers toed in to my ears and the second row sweet spot the speakers are crossed approx. 1 foot or so in front. The larger subwoofer(not using for music right now) is about 10 feet away and just behind the front left speaker but moved toward the center...if you can see this. I will have another behind the front right speaker but have been out of town alot lately......

.The "enclosure" was made to just above the height of the Rm-30's(with the ability to remove a piece of material to make it the size of the RM-40 and beyound!!!) but the entire back of the area is open as I can get my body and walk around and adjust etc. It is tight but there is lots of room for air flow. I have the fronts "grill" off so air circulates and sound. This is open to my screen area also.  The entire enclosure is coverd with acoustical black material(nothing over the speaker) and on a Cherry wood stage.....very nice looking if I may say so myself. I use the enclosure as a tweak also. Remember Johns board on top of the RM-40's to improve bass etc. I have my RM-30's just set back alittle to help produce this. I have tried different positions and this works the best. Bass is not lacking and proven by auditions and others views. I will see what the more recent victim...err I mean client thinks today at 1:00pm.

Again, this is not a tight enclosure and very open. I think in a wood cabinet that you just fit a speaker in like a bookshelf per se you could have some problems. I know Brian will really need to give his opinion to see which speaker will work better in one.

Larry

Deven

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Using VMPS speakers in built in Cabinates....
« Reply #4 on: 11 Oct 2004, 05:05 pm »
Thanks for the reply. I do not have pictures of the cabinate yet, as they will be made to fit around the TV and speakers (both of which I need to decide upon for measurements). Our Family room is next to the kitchen, so we are going to match the cabinates to the kitchen cabinates (Alder wood). Unfortunately the depth for the speakers will be limited to about 24 inches, and not much width either (maybe 24 inches). My suspicion with the rear ported speakers are that they will not 'work' (versus an entirely enclosed speaker, or front vented?). Similarly, I would want to put the subwoofer in the cabinate as well. I was hoping for a VMPS solution, but my suspicions were that it would not work for this setting but I wanted to know if anyone else has tried (with success).

Thanks,

Deven

lkosova

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Using VMPS speakers in built in Cabinates....
« Reply #5 on: 13 Oct 2004, 04:48 pm »
My question is weather any of the VMPS speakers can perform adequately in an enclosed cabinate?

After thinking about this and talking with the "Master", the Rm-30c's should work in your situation. Use with the Larger subwoofer and you will have a fine system. You won't have to worry about the side woofers causing any problem.(since the c'c don't have any). You can have a short base made and with the width should be able to angle the speakers accordingly.

I hope this helps,

Larry

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