Tweet
Inspired by Roger Russels pretty IDS-25, I finally built my own towers.
DIY'er "5th element" generously shared his impressions, tweaks and measurements with me regarding VifaTG9.
He pointed out that3d. and 5th harmonic distortion raise quite a lot from 500 hz and down. The void under the cap is a relative big chamber in front of the 6mm "pipe". The cure was to add phase plugs.
The solution was some volum knobs( for guitar) spray painted with Plasti-Skin (same as PlastiDip) and wooden spline dowels 30x 6mm with a drop of glue, just to secure. Luckily, both the knobs and dowels dias are 6mm, fitting the hole in pole piece precisely. In other words: Mostly Lego. Knobs are plastic, not disturbing any field.
All TG9 (4 ohm) got its own chamber, 4,7 liters each. Compartments are separated by 6mm gypsum fiber-sheet (rehab plaster).
I doubt there is such a thing as high end 3,5" cone tweeters, so I added AMT tweeters from Aurum Cantus (Oscar JAS) . Tweeters are modified with flat faceplate and damped conical back chamber from graveyard vase.
Sub woofers are 21" Hipower Pro BR-tuned to 18 hz in room. Magnet is dia 13". Not easy to handle in workshop.
Baseplate for towers are 25mm Alu with EPDM rubber dampers (from domestic AC accessory) and ice hockey pucks with felt. This make it easy to push the speakers in position.
Speakers are painted with paint meant for floors and stairs. Nylon elastics on baffle inspired from Sonus.
For tuning I use Dirac Live and crossover by MiniDSP. Tuning is ongoing.
WAF? I'm happily married :-)
DIY'er "5th element" generously shared his impressions, tweaks and measurements with me regarding VifaTG9.
He pointed out that3d. and 5th harmonic distortion raise quite a lot from 500 hz and down. The void under the cap is a relative big chamber in front of the 6mm "pipe". The cure was to add phase plugs.
The solution was some volum knobs( for guitar) spray painted with Plasti-Skin (same as PlastiDip) and wooden spline dowels 30x 6mm with a drop of glue, just to secure. Luckily, both the knobs and dowels dias are 6mm, fitting the hole in pole piece precisely. In other words: Mostly Lego. Knobs are plastic, not disturbing any field.
All TG9 (4 ohm) got its own chamber, 4,7 liters each. Compartments are separated by 6mm gypsum fiber-sheet (rehab plaster).
I doubt there is such a thing as high end 3,5" cone tweeters, so I added AMT tweeters from Aurum Cantus (Oscar JAS) . Tweeters are modified with flat faceplate and damped conical back chamber from graveyard vase.
Sub woofers are 21" Hipower Pro BR-tuned to 18 hz in room. Magnet is dia 13". Not easy to handle in workshop.
Baseplate for towers are 25mm Alu with EPDM rubber dampers (from domestic AC accessory) and ice hockey pucks with felt. This make it easy to push the speakers in position.
Speakers are painted with paint meant for floors and stairs. Nylon elastics on baffle inspired from Sonus.
For tuning I use Dirac Live and crossover by MiniDSP. Tuning is ongoing.
WAF? I'm happily married :-)
Comment