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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Forgot to elaborate the Quad system.It is actually a tri-amp Quad system, below 100Hz is the Supravox 15in Field coil in open baffle, then it's a Stacked Quad ,and about 5Khz there were 5 RTR ESL cell. I did try the 6C33C amp in a single pair Quad by...
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Very nice mounting. Hopefully the ridgidity will not cause any other unwanted vibrations from moving the assembly ever so slightly. I doubt it could be heard if so. Having used the T-350 (and t-35) over quite a long period from the mid 70's through t...
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IMHO one of these drivers that make you listen to the music at first, but something isn't quite "right". Put it on a - big - open baffle and cut at 200 and use maybe up to 2500Hz. Problematic with female voices, like opera and so on. It distorts quit...
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[quote user="Joe Roberts"] I feel I am being objective when I say that a Mirrophonic system simply blows away Altec, Vitavox, TAD, etc. [/quote]
Joe, I am not a reader of your magazine and the phrase like “blows away” impress me very little. P...
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I have 2nd order crossover both on the upper knee of the ob bass section and on the lower knee of the midbass section. My measurements show phase response and the summed spl is as good as it can get. Have you tried the direct servo technology or do y...
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[quote user="msaudio"]If you look at the picture second from the the top, you will see 2 woofers mounted in front on the baffle, notice a 2 piece horn from the baffle. Klangfilm never had such a horn, they would start at the baffle and curve out. The...
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[quote user="Romy the Cat"] The “expedited” sound
shorten a bit the decay time/volume and makes transients more prevailing. This
is what very commonly audio people feel as “quality” but I degree with it.
[/quote]Romy, in my previous response I ...
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I’m new to this outstanding website and I found it has really educational value and antimoronizating information :)
I’m still in the world of direct radiators and I’m looking for the ultimate midbass channel solution. At this time it’s still impossi...
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[quote user="Joe Roberts"] The L-9 enclosures were wood on all sides. Sealed box. No ambiguity here.Wings were common on theater speakers for mid-bass reinforcement. Plainly audible improvement on these and, for example, A-7/A-5 VOTs. It is equivalen...
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hello kids, a few weeks ago i started my hunt for a pair of speakers....i've been attached to my big system with a pair of headphones for the past year and feel its time to get some speakers to listen to music with (plus, i think my ears are now...
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Well maybe the rich Korean fellow just wants to advance the knowledge of audio as he knows it, by droping a bunch of cash at it, which never hurts!They claim that Silabtone will sound like WE...pf I read somehwere that they use Amorphous cores and s...
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[quote user="morricab"]Hi Romy,I have found that the Apogee loudspeakers ribbon drivers can quite successfully reproduce correct tone. The reason why is this: They have very little coloration from the driver materials themselves (no nasty...
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[quote]That is a bold waste of
speaker’s surface for a small result.[/quote]Yeah, but plywood is cheap and the result is audibly noticeable. Baffle extensions were recommended for all of the Altec VOT cabinets too. Make a big improvement for cheap ...
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I realize the question as to how you will get mid-bass (horns vs other solutions) is still open.If you do go ahead with horns, you should be able to make them so that they'll accept most any 15" driver, which means you could use the horns in making t...
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Jbl came out with a new type of horn design a few year back and it looked like it had alot of good features. The top wall of the horn was curved up while the bottom wall was curved up then down very steep and it was still a 93-46 degree horn. You cou...
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Scott, I tend to think of IB in simple terms, basically, literally, as an "infinite baffle", the idea being that there is no load other than "open air" on either side of the driver diaphragm, and there is no "baffle step"/acoustic short between the t...
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Guy, thanks. We are sitting now in backward, resting after heavy landscaping project. The project consisted of Amy picking up some weeds for 5 minutes and then I hit my leg with 35” wood spiting ox. After all she resuscitated me and we firmly concede...
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Operating a driver in an open baffle will cause front-to-back sound wave cancellation, aka the acoustical short circuit. In addition to this, a plane board baffle offers zero air load to the drivers cone. This is not good. That's why it sounded like ...
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Thanks for your advice Romy and Stefano.I have used RTA with condenser mic in my past systems but I admit I am no professional at it. But I am not clueless with it either.. In my previous setup when I was playing with open baffle designed speakers, ...
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[quote user="mumford"] As we are discussing Lynn Olson's new speaker, here is what it appears to have so far.
Raal tweeters 5000hz and aboveAltec 288-16H with Azurahorn 1000 hz to 5000 hzsubwoofer below 80 hzUnknown (possibly open baffle) fro...
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Antonio,Works just fine with ported, unported or open baffle. The process works on the boundary layer of the cone. This is the very thin area between cone material and air. The actual mechanism just disallows energy trapped in this zone from reflecti...
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Wow! Did I ever stumble onto the right website.I've got enough reading here for a few lifetimes.Recently I cracked open a couple of speaker cabinets that I obtained years ago. Inside I found a Vitavox AK 121 woofer and a G.P. 1 horn unit, along wit...
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Folks,It is really amusing. Here I am busy myself for a while and am not looking and suddenly Roman talks about Mini Monitors and secondar phonostages.It is even funnier if you realise taht I am on a similar kick right now, simply because I am workin...
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Looks like I'm back into this again, since, all of a sudden, out of nowhere, Yoshi up and sent me his "neutered" Reps 1 drivers (he surgically removed the whizzers).I started turning my existing Basszilla components and these guys together ...
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Yes, for practical reasons, one side of an IB driver is usually "wrapped and sealed" to deliver lower frequencies from the other side, since it is generally impractical to actually make a baffle large enough to prevent sonic shorts. However, at high...
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Got the right channel open baffle installed. It's certainly
not finished cosmetically but it is fully functional. There is nothing measured
or calibrated But I spent quite a few hours listening last night. It is very
very very interesting result. ...
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Let start from far away…. Sometime in the past, while I was fighting with bad electricity, I was trying a variety of symmetric transformers. I do not know if they were implemented as good as they should (I doubt) but I detected an interesting common ...
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[quote user="Paul S"] I took a couple of pictures, but I can't figure out how to upload them, just yet. [/quote]Hi, Paul. Take a look here http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=1120 [quote user="Paul S"]I took out the phase plug, a...
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Collin, there is one more tip for you how you might bult a very inexpensive but very good performing MF channel, thought it might be slightly time-consuming…
It is not well-know but some, primary Japanese companies like JVC, Yamaha, Hitachi, Denon ...
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[quote user="Scott L"]I had to take
pause before I answered here; realizing in an almost shocking manner [that] I
don't listen to many commercial loudspeakers.
I am largely involved in the (gasp) DIY
community, where it's also very often done inc...
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