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Get familiar with the reaction system: Introducing the Reaction System
1001 reasons not to, but intriguing…
My last run at a build (my new product thread) has been set aside for now. Good, but not necessarily better or unique.
So I’m open to trying something different. That said, these upward/ top baffles designs I’ve always found interesting from a design/ room filling perspective. As stated, I can think of many reasons not to, but could be a fun project. Any builds / suggestions ???
A fairly good review here:
http://directacoustics.com/?page_id=301
Comments
I think it's a fun idea. Really good learning experience for something different.
Do it, they are interesting. Someone brought something like that to Indy years ago and I thought it showed promise, but was very dependent on where you were in the room.
Marvin's Ohm speakers are pretty cool as well with the down firing woofer and cross angled tweeters
Looking at significant off angle responses (I have a hard enough time matching up tw and mid at 15 degrees off measurements) is concerning, but I’ll have to admit reflected, somewhat non-direct sound as room / background music (dare I say 901s here) while not best for critical listening can be enjoyable. The review I posted of the top speaker was surprisingly detailed and overall positive.
Sonab omni directional speakers were popular here (Oz) in the 80s, but they needed a particular room size/dimensions and a custom Sonab amplifier to perform their best. IIRC they had two tweeters and a mid.
I only heard them in a hi fi store and quite liked the sound, but not the price.
Here's a sort of modern equivalent:
https://www.decibelhifi.com.au/decibel-omni-premium-kit-pair/
Geoff
Thx for the reference and link. I don’t know if I’ll go down that road for a build, but the pencil to paper juices are flowing. Even bose had a doable model. I even have 4 small tectonics that may come into play (and off the shelf).
@Hifiside was experimenting with Ohm Walsh style, but not sure where that lead.
These are the same model I bought in 1997ish as my first real set of speakers, later paired with a kenwood vr306 receiver. Sold them a few years ago for the same price I paid new. They were lots of fun. They were intended to be on their side with one tweeter facing the rear wall one tweeter facing the listener.
Bose 601's
Passive or Active?
I've been a long-time fan of employing both. Passive for the mid-top (generally mid/tw) and active btwn bass and mid-top. Gives me a ton of freedom in managing the bass around the mid-top which I find as key- the mids. Makes traveling to shows a pain in the rear, but...
I know I’m going to set a new (low) bar for an initial fast go, as I’m needing to enclose the small tectonics in some sort of sealed boxes and attach / place them around a woofer (from a previous build set on its side) angling one towards listening position and the other to reflect off sidewall / ceiling back towards listening area. Pics to hopefully follow tomorrow- lets just say its nacho going to be exemplary.
Cardboard?
I know the suspense is killing everyone so…
But kudos to Pepsi, those mini’s are darn good.
Darn, I wasn't far off. Hey, it's easy and gets us there.
I have been known to put mids in steel coffee cans in the past - nothing wrong with your "test cabinet" idea.
I did a quickie setup, eq’d the drivers as measured from ~listening position direction. LR2nd order 600Hz. Actually not a bad looking result. Stand up and it’s of course a whole different picture (eq’d had ‘managed’ the steep off-axis of the upward facing woofer).
Listening impressions / conclusions. Those little tectonics play bigger than they look. I do like listening to music with direct sound (front left / right mains) with a tad of room fill. My std set-up I have an A/V preamp set as a 2+2, with the rear/ceiling speakers playing very, very softly, so not a surprise that I didn’t mind this duct-tape speaker test. I’d probably pass on such an unconventional layout, but adding a broad-ranger such as these tectonics upward and out the back / side (room dependent) is worth considering.
Edit: Listening to these for a bit, surprisingly clear and focused center image. Guess the delay of the reflection driver (wall/ceiling back to listening position) doesn’t interfere with first direct sound. If I wasn’t going to pull the woofers for my next build these would make a fun Iowa show speaker.