I finished reviewing the famous Philharmonic BMR speaker. It's way too much to copy and paste here (image tags kill me!) so here is a link:
Philharmonic BMR Bookshelf Speaker Review
Philharmonic BMR Bookshelf Speaker Review
Yup, it's a smallish stand monitor striving for bass extension with an inefficient midbass driver: it's going to have poor sensitivity.
Here is the BMR on a full-sized test-baffle (so you can guess at what the problem is with the horizontal off-axis pressure loss 900-2kHz):
https://hificompass.com/en/speakers/measurements/tectonic/tectonic-tebm46c20n-4b
Here is the BMR on a full-sized test-baffle (so you can guess at what the problem is with the horizontal off-axis pressure loss 900-2kHz):
https://hificompass.com/en/speakers/measurements/tectonic/tectonic-tebm46c20n-4b
Erin,
Excellent review! Any chance showing us measurements of the compression amplitude at a 3M distance?
Thanks,
Anand.
Excellent review! Any chance showing us measurements of the compression amplitude at a 3M distance?
Thanks,
Anand.
oh, and as a "plug" for Erin (bikinpunk), here is his Youtube website:
(..if enough people watch his videos, he might start making at least something to help with that huge expenditure for the Klippel system.)
Erin's Audio Corner
- YouTube
(..if enough people watch his videos, he might start making at least something to help with that huge expenditure for the Klippel system.)
Erin's Audio Corner
- YouTube
Erin, that is some impressive measurement and graphing technique. I may steal your way of showing full bandwidth 360 directivity.
In all honesty, Erin’s review method is awesome. I hope he reviews more speakers, I understand it’s very time consuming.
Much appreciated!
Best,
Anand.
Much appreciated!
Best,
Anand.
Yup, it's a smallish stand monitor striving for bass extension with an inefficient midbass driver: it's going to have poor sensitivity.
Here is the BMR on a full-sized test-baffle (so you can guess at what the problem is with the horizontal off-axis pressure loss 900-2kHz):
Tectonic TEBM46C20N-4B | HiFiCompass
When I first tested the speaker I assumed the BMR was the loss-leader. But, yes, when I looked at the Scan woofer I realized it, too, is a contributor. I tested one of the other BMR speakers (2.5 inch, IIRC) some years ago and was really impressed with its response but the sensitivity was somewhere in the upper-70's which killed any notion of me ever using it for anything.
Erin,
Excellent review! Any chance showing us measurements of the compression amplitude at a 3M distance?
Thanks,
Anand.
Unfortunately, no. I would have to physically re-measure at that distance and then I run in to room issues with the particular module I used to provide the data you're referencing.
BUT, I actually updated my review last night to include Maximum SPL using Klippel's MTON & ISC module. MTON being multitone distortion/compression testing.
With the ISC module I am able to create and then apply room correction for my MTON testing. It's pretty freaking slick. I do this testing at 1 meter.
Not sure if that helps but it does give you some real numbers measured in the "farfield" (depending on what metric you use to define that transition).
oh, and as a "plug" for Erin (bikinpunk), here is his Youtube website:
(..if enough people watch his videos, he might start making at least something to help with that huge expenditure for the Klippel system.)
Erin's Audio Corner
- YouTube
Thanks for the support.
Unfortunately, to get paid via YouTube it takes millions of views. I think I read somewhere that you get 2 cents per view. Aside from that, YouTube requires 1k+ subscribers (I have about 940) and 4k+ hours watched (I have about 1500) before they run ads. But, maybe in 5 years I can make enough off monetization that I can buy a cheeseburger.
That is why I have a link for donations on my site. That's the only way I can help fund some of this stuff. Even when people send me their speakers, I still sometimes have to come out of pocket to pay for shipping. For example, today I am expecting a set of Bose Series V's. One-way shipping was $115. So it's gonna be about $230 round trip. I've got $60 in my PayPal right now so I'm a bit behind.
Honestly, I just hope that with enough YouTube views that it will be easier for people/companies to be willing to send me stuff to test (not to keep... but hey, if Mcintosh one day wants to send me one of their amps and lets me keep it, I won't complain. LOL). The downside is that after I completed my review of the Jamo S807 and trashed it, no company may ever want to send me anything again.
In all honesty, Erin’s review method is awesome. I hope he reviews more speakers, I understand it’s very time consuming.
Much appreciated!
Best,
Anand.
I appreciate the positive feedback! Yea, each test requires a minimum of about 10 hours to gather all the data and type up the review. Moreso when I factor in the YT videos and now that I've added the Max SPL testing.
Erin, that is some impressive measurement and graphing technique. I may steal your way of showing full bandwidth 360 directivity.
Thanks! Feel free... steal away! The method is going to be used in the new update to SoundEasy as well. A user requested it and Bohdan said he would implement it (but limited to ±90°).
Just wondering here if you used a class-D amp to measure the harmonic distortion?
I have seen a similar rise around 3-4KHz from some class D amps.
I have seen a similar rise around 3-4KHz from some class D amps.
Thanks for the support.
Unfortunately, to get paid via YouTube it takes millions of views.
It takes a polarizing video or two with the right caption to really start getting lots of views (and with it subscribers).
SoundBlab
- YouTube
HexiBase
- YouTube
Kirby Meets Audio
- YouTube
Note which projects really "reel them in". 😉 ..it really is like fishing. 😀
Shown low-cost dollar amounts (..like $40) in the title or "Worlds BEST" tends to work well. Also, stuff that's socially "en-vogue".. like a Kickerstarter campaign that did really well reasonably soon after it's available like "..The Little British Monitor".
(sure.. it's click-bait, but it needs to be at first ..and on occasion thereafter.)
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Just wondering here if you used a class-D amp to measure the harmonic distortion?
I have seen a similar rise around 3-4KHz from some class D amps.
Nope. QSC A/B amp.
The distortion is the RAAL tweeter.
Just thought I'd let you guys know I posted a YouTube version of this review on my page if you're interested in watching it. I'm trying to be different than all the other reviewers out there... honesty and objective data...
Review: Philharmonic BMR Speaker by Dennis Murphy - YouTube
Review: Philharmonic BMR Speaker by Dennis Murphy - YouTube
Great review, Erin! I am now subscribed to your channel. You ended it perfectly...buy it...crank it...enjoy it! That is what it all comes down to. Glenn.
Great review, Erin! I am now subscribed to your channel. You ended it perfectly...buy it...crank it...enjoy it! That is what it all comes down to. Glenn.
haha. Yep. These speakers get quite loud and they are very much enjoyable!
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