Opinions on Full-Range/single driver speakers


I am considering a DIY project to build a pair of single driver speakers. My current idea is to put Jordan JX9s into Transmission line cabinets. I am a competent woodworker and there are lots of plans on the internet.

I do really value the opinions of you audiogon members out there with lots of listening experience so I am curious what your opinions are on single driver speakers. If you can also comment on wide-baffle versus narrow baffle designs, that would be helpful.

My front end is a Monarchy tube DAC 25 with Matsushista tubes and DIP Classic, coupled to an AYRE DX7E, all interconnects and cables are DIY magnet wire. I am currently using Green Mountain Europa's and a modified Paradigm subwoofer.

After enjoying GMA's and experiencing time/phase coherent sound, I started looking at other options for coherent systems. It seems the simplest design is a good full range driver (no whiffle cone) in a TL or QWL cabinet.

So your opinions are appreciated. I would prefer if you did not advise me to purchase your favorite speaker as that is not the type of information I am seeking.

Thanks in advance for your time!

Drew.
drewh1
my first DIY single was audio nirvana 10 inch. I have 4 other pairs od speakers retailing from 5k on down. The audio nirvana full range is awesome with MANY different kinds of music. Not expensive. Only the woodworking is time consuming. It wont cost you squat to give it a shot AND the owner will trade them back FULL price if you want to go with his Lowther brand later on down the line. Pretty simple decision if you ask me. Look it up.

ALso, everyone here has great advise WHEN YOU INCORPORATE IT WITH YOURS.
Audio Nirvana looks interesting and priced appropriately for a first time project.

Although I was hoping for a simpler answer (duh!) I have gotten a lot of good ideas and opinions. The one thing you can depend on in this hobby is that there is no right answer to anything. In fact, you can count on total disagreement on just about any technical issue!

I am going to build a pair and might try two different designs, using 8 inch drivers, no whiffle cone, and optimize to a frequency range of 35 or 40 hz to 15 khz. I can't hear much above 12 khz anyway (too many years in rock bands) but do believe there is some ambient sensing of higher frequencies. I will use a sub to get me down to 20 hz for those few CD's that use synthesized bass and some of my Bach organ music.

Thanks for all the opinions and ideas! It will probably take me a couple of months to get to it but I will let you know how it goes in case anyone is interested.

drew.
Since you suggested Jordan, I was thinking you should try Alpair 10 in an MLTL. Will nearly get there on your bass requirements. Yes, try an 8" too, prefer the Visaton B200 in OB but there are a lot of good Fostex drivers, and make sure it is a paper cone. Probably good to get into a back loaded horn for something completely different. If you really want bass under 50 Hz then use a subwoofer. Music really needs bass IMO. Since high frequencies aren't for your listening I won't be suggesting a supertweeter to supplement the full range driver ;-)
Audio Nirvana not so hot. Go fostex f200a. Keep in mind you have experts sugesting f200a you have newbes suggesting AN. Keep this in mind.
I have tried Jordan's, 4 JXr6 a side in a line array with peerless 200mm HDS for the bass. They were sent back because they didn't meet the manufacturers specification. The Peerless are now in the computer room on bass and my new speakers in the lounge are Tannoy Canterbury SE's. The only drivers I ever heard that came remotely close to full range with few issues was the Manger bending wave transducer and Ambiance ribbons. Both demand the fastest tightest bass driver crossed over above 100Hz. All so called full range drivers need help in the treble or bass and all suffer inter modulation distortion issues as well as those already mentioned in response to your post. I would not go for the Jordan's unless you hear them first or anything else for that matter until you are sure their sonic signature will satisfy. Building good TL or TQL cabinets takes a lot of effort & fine tuning to get them right. If you are infected incurably with the full range bug. I would try auditioning the following AER, Supravox, PHY, The alnico Fostex full rangers, Feastrex, Visaton B200 which I think offers the best value or the SEAS exotic who at least seem honest with their response curves. If you are open to using vintage drivers or building a line array the possibilities really open up. Madisound has a decent range of things to check out. Don't know if this advice helps or confuses but putting my 2 cents worth in anyway. Cheers thermo