Dick Olsher's review of the 626jr (w/megawoofers) in August Enjoy the Music

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John Casler

Dick Olsher's review of the VMPS 626jr is now available at Enjoy The Music.com
http://www.enjoythemusic.com/magazine/equipment/0808/vmps_626jr.htm

After reading through, it looks like Dick enjoyed the speaker :thumb:

Brian Cheney

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I should add the SDE version fills in the "laid back" quality of waveguide-on operation with some digital EQ.  In my room I use the waveguides on both speakers, or on one only, depending on type of music, with the jazz/pop material usually going without. With SDE correction (which includes room mode compensation in the bass) I always have the CDWG's on.

I'm glad Dick included an FR measurement which potential usuers frequently ask for.

JLM

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Congrats Brian. 

Dick's impressions parallel my brief auditions of the 626 (don't know which version anymore).  But the 626, for performance, size, price, is my favorite VMPS.

Housteau

I should add the SDE version fills in the "laid back" quality of waveguide-on operation with some digital EQ.  In my room I use the waveguides on both speakers, or on one only, depending on type of music, with the jazz/pop material usually going without. With SDE correction (which includes room mode compensation in the bass) I always have the CDWG's on.

Brian, I had asked this on the other recent thread on the waveguide issue of high frequency roll-off.  I thought that the dehorning of the tweeter compensated for the roll-off from the waveguides?  I remember specifically reading about that earlier in the development phase of the waveguides.  From what I have been reading lately it appears that the dehorning does not take care off all of it.  Where and how much is involved between a dehorned tweeter + waveguides and one not dehorned + waveguides?

Brian Cheney

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There is a region between 5 kHz and 7kHz where dehorning does not compensate for the treble rolloff.  This is what Dick refers to as the "laid back" quality.

This is the area where digital EQ is very useful.  In SDE speakers I add 3.4dB of boost centered at 5.05khz with a Q of 1.  Does a perfect job.

Jose R.

I was interested to see the SPL curve in this review as it mirrors the measurements I got with my RM30C's at the listening position.  The Y-scale was very large and did not highlight the lower level that is present between 200 and 800Hz.  This has been an area of concern to me as I have posted previously, resulting in a receded upper bass and lower midrange which I have never quite been able to resolve, even using Tact room correction.
I agree with the review that the mid panels are excellent but they are unable to go low enough to fill in the range I refer to above.  I resorted to using digital crossovers and running the woofers much higher (to about 700Hz) to add some presence to this range which, to my ears, improved the sound somewhat.

Jose

jonbee

Jose,
Have you experimented with cabling? I found cables make a huge difference in balance, specifically in the range you describe, as well as the mid-treble range. When I recently switched to Clear Day Cables Solid Core silver cables on my mids and highs, the sound balance warmed up quite a bit, and when I went to very heavy guage (around 8 ga.) long grain o.f. copper on the woofers of my RM30C, the midbass came up quite a lot- dramatically so. The overall balance after those 2 changes was a total revelation.
On the 626, the midbass and lower bass is improved hugely by use of a baffled stand, as B recommends.

BTW- Congrats on the review, Bryan.

fredgarvin

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I formerly had RM1's and switched to the 626. I lined the interior with dampening material similar to Blackhole 5 and run them on the recommended baffled stands. They sound much better than the RM1, especially in the region in question, as Johnbee noted. I wonder how the RM30 sounds in comparison to the 626 ? I also underfill with a sub crossed over very low about 50  I think.

Tyson

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I had a similar problem w/the RM40's in my room, until I swapped the mid-woofer to the bottom position.  Lower midrange/upper bass filled in quite nicely.

Jose R.

Have you experimented with cabling?

Hi

I have played around with numerous cables, both commercial as well as DIY.  while I do agree that cables can make a difference, I was never quite able to get the upper bass/lower mid fullness that I was looking for.  This may well be a room issue in my case.  The RM30's do have some special qualities but I am happierwith the sound I now have using line arrays.

Regards

Jose