Fiddler, for those not familiar with your project can you give us a little more background information. Who makes PHY's and what is their web link? Did you design a cabinet from scratch and if not, give us more detail? What XO's are you employing in this design? Are they 1st order, 4th or what?
Lastly are these for 2 channel, HT and personally use only or are you considering selling to others?
A keyword search over at the asylum will answer all your questions in less time than it took you to ask.
A word of warning-Don't start your research unless you are prepared to pony up the dough for the drivers.
In reviewing the web info, it is helpful to speak French. Some, but not all info is available in English.
Faugusta, if I would have known the asylum had answers to all my questions I wouldn't have asked them, now would I?
$2,800 for drivers is a drop in the bucket. I'm ready to pony up a lot more than that... if I know what I'm getting bests what I currently have!
Dawgbyte, the website is:http://www.PHY-HP.com
I hope that works!
The open baffles have no cabinet, just a flat front baffle. I found lots of info in this thread. Its a long thread!http://www.diyaudio.com/forums/showthread.php?s=&threadid=19883&perpage=10&highlight=&pagenumber=1
Also, here is the final design that I am going to use with some modifications:http://www.audiocircle.com/circles/modules.php?set_albumName=album96&op=modload&name=gallery&file=index&include=view_album.php
No crossover is employed.
Only two channel use for music.
Selling to others? Are you kidding. These things are so simple to make and sound so phenomenal, I can't imagine why there aren't tons of people already using them. I know I would have long ago if I had known about OB designs and the PHY drivers.
Dawgbyte, here is a quick picture of what the speakers will look like:http://www.audiocircle.com/circles/modules.php?set_albumName=album96&id=P1010004&op=modload&name=gallery&file=index&include=view_photo.php
I have the PHY KM 30 SAG, which includes a time-aligned tweeter, so my baffles will differ from the ones shown by eliminating the add-on tweeter and crossover.
Here is the PHY KM 30 SAG driver:http://phy-hp.com/English/Products/KM30_SAG_E.html
Aloha Fiddler, Are you still driving your KM 30 with your Berning 270? I would love to have a listen, if who you are, im in driving distance to you. Mahalo Wally
Hi Fiddler, I am going to build an open baffle loudspeaker based on Phy HP KM 30 SAG, too. I wonder why PHY-HP suggests a huge baffle in their website (http://phy-hp.com/English/Communication_E/Com_E_Baffle_Plan.html), while yours is smaller. Of course, your baffle is much more compatible with a normal room size and, furthermore, it looks very nice, but do I have to expect any difference (e.g. in bass response) with respect to the PHY-HP suggested baffle project?
PHY makes some realy good drivers,OB have a very good sound if done right and I feel are over looked. You can use PHY in other designs than a OB but this takes a bit of work to get right and a OB is well easy.If you cant afford PHY other drivers can work very well in OB designs one is fostex f200a. Till later happy listening
I appreciate that their designed for "o b" but how do you think the phy 30 sag would sound in an enlcosure like the "tannoy autograph" ? or "tannoy grf"
Beautiful job. Well done. With every thread I've read at every site (there's lots) and after that review at 6moons, I'm thinking of trying it myself and I have zero experience in woodworking. Its that tempting.
On an aside, have you or anyone else here had a listen to the Audio Nirvana full range speaker? Someone told me it was a very nice speaker (he still has his) and for the price, it wouldn't be a big risk (there's no way I can pony up the dough on a PHY unit just to try it out)
Using the KM30 in a Tannoy enclosure would be an interesting experiment. There are speakers using the KM30 that are not open baffles. My own Ocellia Kedros is a weird TL/open baffle combination and Hans Kortenbach makes the Auris 2 which uses a sealed enclosure for the KM30. Also Tonian Labs makes a kit for the KM30 in a simple sealed cube. So it can work but how you handle the loading of the driver can be tricky. The KM30 has a very high Q factor because it is designed for OB operation. The driver might be underdamped in a random enclosure.
Fiddler... any updates for us?
I am an Audiogoner that purchased a pair of PHYs almost a year ago and am responding to your email. Now that I'm acclaimated with the speaker in my 15' x 15' room I can speak on it. Terrific, the wings on the baffle help in the tuning process. I've tried it with and without wings because the speaker size looked imposing in my room, but I must say the wings on the baffles produced better staging and better bass. I'm currently using a borrowed Roger Majeski 6EM7 5 watt Single ended amp with the Promitheus TVC preamp. Without question, if no one has auditioned this EM7 series amps...PLEASE. I plan to purchase the 12watt version though the 5 watter is fine it's just good to have that versatility for less sensitive speakers.
(1.) Link for the EM7 series http://www.audiocircle.com/circles/index.php?action=search2
I will send to your personal email a picture of my Open Baffles
I was hoping you might shoot me a pix or two of your PHY OB;/s and tell me what you think of them at this point? Which model? Source? thanks so much, I am about ready to pull the trigger on a pair of HP210 regards, Dan
Fonz I would love to see pics as well
I've been speaking with Tonian Acoustics on their phy designs and would love to see what you have mustered up
Please e mail me with your comments when you have time
Hit me on my home email: firstname.lastname@example.org and I will gladly reply with pics. My system is in a state of flux. I'm getting off the merry-go-round and am going to settle on my last pair of speakers. I'm halfway to the Avantgarde UNO on the "GON" but I have too much into the PHY driver and solid cherry baffles to let them go cheap. I'm devoting all my time to woodworking which is my first love, actually second to my wife and Kids. As nice as the PHY is, if I hadn't heard my friends UNOs earlier this week in GA. I would have been happy.
I'm sorry I left you out. My email is email@example.com
I will gladly send pics.
Beautiful Fiddler, simply beautiful. I've read about the PHY drivers for some time now you've gone and done it.
I am absolutely useless when it comes to woodworking etc. If I took the Battle Plan OB plan on the PHY-HP website to a cabinet maker are they definitive enough for him or her to produce said speaker design?
A customer of ours brought in a set of PHY KM 30 SAG 12" speakers, based on a series of reviews he read. One of the reviews recommended that our amps were a good match so he ordered a set of those as well.
I have to say the PHYs were quite impressive! At first we listened to a set of SET amps, and really, they did very well, although a bit odd (colored? humped?) in the bass. When we got our amps installed that and a lot more was transformed- it was easy to see why the reviewer (who was in Hong Kong) made his comments (although its hard to say how much was amplifier and how much was break-in- refer to earlier comments to see how important this is). A really nice easy load for any tube amp too. 16 ohms really contributes to improving transparency in tube amps as you reduce distortion that masks low level detail.
I really want to see som pictures of your open baffle "Fonz". I just got my hands on a pair of KM30 SAG drivers and gonna start building a open baffle or a box with open back...
I don´t have room for the recomended open baffle from PHY-HP website so I´m really interested in yours.
Do you still have them?
I believe I have some pictures I can send you, the full and small scale.
Based on your system, looks like you moved on from the PHY's?
I have a pair built into an OB, which I love. I was curious, however, how you went about making connections to the drivers. I'm currently using disconnect tabs to push onto the metal tags, yet was curious what you did. Did you solder wire directly to the metal tags? For such over-built, beautiful drivers, it seems beyond bizarre to have such a critical juncture serviced by what appears to be a 10 cent piece of tin, but I trust they know what they were doing.
Any help you can provide is appreciated (and I'd love to see the photos you mentioned if you have them handy). Thank you in advance for your time.
All best, Andrew