Ive completed some GR-Research beauties.
Been waiting 5 months for this moment - they arrive.
Thanks to Fredrick who talked me through the sound characteristic upgrade options of the the crossovers and built them - outstanding work. (Fredrick left the perfect length of wire to complete the soldering - didnt need to trim or add to the Studio's wiring and was able to solder them as is!)
We stuck with the Gen 1 Sonicaps, did all Goertz foil inductors, Duelund CAST-PIO-Cu Pure Copper Foil bypass caps and Path resistors with all solid core GR Research wire.
Then all the crosservers, wire and tube connectors were cryo'd by GR-Research.
My cherry on top was finding a perfectly matching polished copper metallic spray paint at Home Depot - wasn't sure how this was going to turn out. I ended up loving it, just need to be careful it doenst chip off when screwing.
I wound wire using a power drill - very happy how it came out
Upon first solder I reversed the (+)(-) on the woofer circuit because I was following colors rather then the wiring diagram - I fixed it as soon as I realized.
Wanted to be extra sure I had the box on the Studio's sealed
The No Res that comes with the NX-Studios is the perfect amount to do all of it and the top slope (inside and out) - I haven't cut the top slope yet because waiting to set up my table saw for clean cuts. The cuts here were done with a razor blade and scissors where possible, since its not going to be seen I wasn't too worried about clean foam cuts.
Something I had been thinking about for a while was a good solution for mounting the crossovers to the base of the Studios - I used inserts in the bottom of the no-res and m4 bolts
No-Res installed (this stuff is extremely sticky - need to really plan positioning before committing otherwise you'll be using elbow grease to unstick it and reposition (as I did more than once)
Crimp and solder - I ended up having to heat up the tube connector plug a little bit because the paint had filled in the holes alittle and having a tiny bit of flex in the plastic did the trick.
Used a right angle screw driver from harbor freight to get the bottom screws - this was probably one of the hardest things in the entire project lol.
Adding fiberglass insulation and drivers to Studios
Ultimately, I'm very pleased with how they came out.
Update: I got the amp boxes finished. Painted same as subs. I added some cabinet door handles as feet/handles to add some stability when upright and to minimize scratching. They worked out really well and have already been useful for moving them around. They are 6” long with 4” hole pattern.
Update on the subs:
The GR-Research Open Baffle Rythmiks are wired and singing. Took me a few minutes to dial them in for my LP. Ended up with 80/24, 14hz high damped, phase at 160, 80hz crossover and they are blending well. First time hearing open baffle subs and for only 370 watt amps I’m astounded. The speed of the bass is addicting, just want to keep hearing more of what they can do. Took this quick clip which recorded pretty well. Now I realize I’ve been using 1/18th of the power of the G25HP’s. Dialing them all in is going to be fun. Still need to solder them up but for now running 2 strands of GR solid core between woofers and original amp lead wire for power, and single GR solid core for servo. I was able to keep the length of the power lead stock from the amp but the servo lead wasn’t long enough and had to add about 12 inches or so which is why I ended up using solid core for servo. I’m not in love with how the cable comes off the back of the sub due to my configuration but it won’t be seen and eventually I may decide to mount a female Speakon somewhere and use a bridge cable which was my original plan, then decided I wanted to keep length a short as possible.
Video clip is with just the NX-Oticas and Double Troubles.
https://youtu.be/cbDDjBSPRlA?si=hRUVz5YbiaLOuAEl
I have not yet cut or installed the No-Res for anything but the Studio's but I was so impressed with how this track sounded I had to clip it.
It sounds like the wind instrument player is standing on the right side of my room.
https://youtu.be/XlK5iUQt0pU?si=3ZrnYwz822KXLubENX-Otica + Double Trouble sound clips;
https://youtu.be/JY3-3AAZ-5Q?si=mS4uOG87WBEMIeAEhttps://youtu.be/z44vYaUUTOA?si=hv4W8hoI9sMewEbbhttps://youtu.be/cbDDjBSPRlA?si=M8MhhHdpH3WF95QXhttps://youtu.be/U2PbYgOIVEU?si=RPIZ_7myeWvphQtHhttps://youtu.be/oIs8dy056Cg?si=UIrG9rjMLIhNfmHGhttps://youtu.be/dp0XlhfzWiY?si=IIe18aRxT7gR9CrMNX-Otica + Rythmik G25HP subs sound-clips:
https://youtu.be/9gZaVteddTI?si=_Sccmr0mepYtssHYhttps://youtu.be/kasj6f_vW5E?si=A6voUs5hFSJJTFmmhttps://youtu.be/pBU1Mmtwpug?si=GRijmVGJKsCkaoFDhttps://youtu.be/SGv6EXNSYUs?si=yfl68DqDOpkCg4RL This may be blocked in your country
https://youtu.be/VGwiGV3imag?si=RczIse8T94_BAiUXFull size images
https://www.audiocircle.com/index.php?action=gallery;area=browse;album=42575
