GR Research Build Threads

NIGHTFALL1970 · « **Reply #100 on:** 23 Dec 2024, 01:55 am »

Very cool!😎

KTS · « **Reply #101 on:** 25 Dec 2024, 09:37 pm »

Looking good!

JCarney · « **Reply #102 on:** 8 Jan 2025, 03:17 am »

Very nice build you got going there czechm8. Very nice work.

JCarney

Edward4 · « **Reply #103 on:** 24 Jan 2025, 05:09 pm »

Not sure if this is the right place to say this, but I built a dual-driver open-baffle servo-controlled subwoofer from GR Research yesterday, and it sounds heavenly. The musical sound is natural, relaxed, full, and reassuring - compared to anything I've heard in my home so far.

(Still need to cut & apply the NoRez, etc.)

Previously I had a seven-inch "REL" subwoofer in this same spot. The "REL" sub would send some of the bass directly at the floor, and maybe that's why I frequently would get bass feedback sent back into my turntable if I had the volume up to even a moderate level (but still quieter than if a live jazz quartet were in the room). The new GR Research sub seems to have completely eliminated this feedback issue, besides just sounding so much better overall. I think the bass was also feeding back into my tube amp, because apparently vacuum tubes are microphonic. I don't know if it's the "open baffle" design that protects the turntable & tubes from the bass feedback issue (i.e. the "room boom" / room "pressurization" that some people talk about), or if it's simply the way the REL sub pointed some of its sound directly at the floor. I guess I'm still not clear on what "room pressurization" is, but the proof of the pudding is in the eating as they say, and this sub design definitely works much better than competing products, in my opinion.

You have another very happy customer here; thank you Mr. Richie and others.

Denton J · « **Reply #104 on:** 23 Feb 2025, 07:17 am »

I finally started making ground with my Encore builds for my kiddos. I enjoy to attempt new methods so I used car paint. I used a vinyl sealer to attempt to seal the MDF edges but I was mostly unsuccessful. I'm going to paint the edges black to cover the edges. The other challenge I had was trying to connect the internal wire to the binding posts. I finally decided to take the binding posts apart so I can lay the binding post panel flat and was able to get a solid connection. Not yet done but here is the build so far.

Mr.J · « **Reply #105 on:** 3 Mar 2025, 05:50 pm »

Is there anyone in Sweden that has the NX-Otica´s with the open baffle sub? Would love to hear them.

/J

Denton J · « **Reply #106 on:** 12 May 2025, 01:48 am »

Are there any recommendations for the stuffing for the LS Encore? I have no rez and I am lining the walls, I am referring to the other stuffing.

Hobbsmeerkat · « **Reply #107 on:** 12 May 2025, 03:13 pm »

A thin layer over the crossover, and a 3-4' layer over the lower part of the back wall, ramping up to the crossover:
https://youtu.be/QvQRRU68FM4

Peter_S · « **Reply #108 on:** 5 Oct 2025, 06:53 am »

Seeking Tips for NX-Otica Build

Hi folks! I am soon beginning my build with the supplied flatpack, and have been reading through the build threads to glean information. I'm hoping folks can provide experience and opinions/justification of the following queries:

1. I am a fan of wood grain, and particularly cherry. One of the builds on this site uses a white front baffle with cherry sides and looks great. Veneer on the sides seems doable, but veneer on the front baffle seems like it would be TOO HARD!!! If I am wanting to use veneer, is the sweet spot veneered sides and painted front baffle?

2. Assembly/finish order. Do you recommend full assembly before doing any finishing? I see it done both ways. Some folks tape off the daddo'd surfaces and then do all the priming and painting first. Others seem to assemble the whole thing first and then prime, paint and veneer. Which way is best?

3. Glue and Paint. Please recommend a good glue, primer and finish. For glue, I read Titebond Extend gives extra working time. For primer I've seen Zinnser Bullseye 123 and Zinsser Cover Stain White Primer. What about a white or off-white or cream finish paint for the front baffle? Flat, eggshell or ???. Is it necessary to spray on the paints or can they be brushed on?

4. Installing drivers. Just drill into the MDF and use wood screws?

5. Wiring. How do you proceed with the wiring to minimize waste so you don't run out? I think there is a good amount of information out there on crossover assembly, but if you have any specific tips, feel free (e.g. wiring to the inductors).

6. Other tips. I am happy to receive any other tips that you think may be helpful and relevant.

I will also be building two Double Trouble sub stacks and amp boxes.... I'll need to think about the best way to finish these, whether they will be at all complimentary, or just black (easier). That is to come.

I may have other questions. And will photograph and post progress once I get started. Thanks so much all, in advance. Peter_S

razzodazzo · « **Reply #109 on:** 9 Oct 2025, 07:39 pm »

Quote from: Denton J on 23 Feb 2025, 07:17 am

I finally started making ground with my Encore builds for my kiddos. I enjoy to attempt new methods so I used car paint. I used a vinyl sealer to attempt to seal the MDF edges but I was mostly unsuccessful. I'm going to paint the edges black to cover the edges. The other challenge I had was trying to connect the internal wire to the binding posts. I finally decided to take the binding posts apart so I can lay the binding post panel flat and was able to get a solid connection. Not yet done but here is the build so far.

Bestway to seal the MDF edges is the use "wood hardener". Needs a couple coats. Then sand smooth. Also protects the edges from dents.

Peter_S · « **Reply #110 on:** 4 Nov 2025, 03:21 am »

What footers are people using on the floorstander speakers and subs?

I'm building NXoticas and double troubles. I don't believe that either come with threaded inserts for feet. Recommended???? Please share what you guys are doing for footers.

Thanks, Peter

Craig Young · « **Reply #111 on:** 4 Nov 2025, 03:54 am »

I have hard Linoleum type of floor and I bought from vodoocabeling.net 16 each iso-pods.

corndog71 · « **Reply #112 on:** 4 Nov 2025, 06:01 pm »

Quote from: Peter_S on 4 Nov 2025, 03:21 am

What footers are people using on the floorstander speakers and subs?

I'm building NXoticas and double troubles. I don't believe that either come with threaded inserts for feet. Recommended???? Please share what you guys are doing for footers.

Thanks, Peter

Here’s what I did.
https://www.audiocircle.com/index.php?topic=172802.msg1826666#msg1826666

GreenBlood · « **Reply #113 on:** 9 Mar 2026, 04:21 pm »

Hi peeps. I bought an upg7kit for my klispch RF7 ii speakers, I've only just obtained a Round Tuit so can finally get it fitted. I'm new to this group so can't even search for posts that mention RF7s so hopefully I can get some help building these crossovers into mine:-) Are there any must read threads on the basics? I have some 6mm plywood and wondering if I can make one big xover and solder the internal wires to the speakers rather than use crimpon ones.

GreenBlood · « **Reply #114 on:** 11 Mar 2026, 08:43 pm »

Hey peeps, just putting the xover together, should I also use cable fies for the resistors to hold then to the board like the inductors and caps?

mlundy57 · « **Reply #115 on:** 5 Apr 2026, 07:39 pm »

Quote from: GreenBlood on 11 Mar 2026, 08:43 pm

Hey peeps, just putting the xover together, should I also use cable fies for the resistors to hold then to the board like the inductors and caps?

I use ties and silicone or hot glue on all parts.

Scott404404 · « **Reply #116 on:** 12 May 2026, 08:07 pm »

Hello! This is an introduction. I just bought the LGK 2.0 speaker kit, and will need some help.
Is there a good instructions thread for the LGK 2.0? Videos perhaps?

Thanks! Scott

mlundy57 · « **Reply #117 on:** 13 May 2026, 03:35 pm »

Quote from: Scott404404 on 12 May 2026, 08:07 pm

Hello! This is an introduction. I just bought the LGK 2.0 speaker kit, and will need some help.
Is there a good instructions thread for the LGK 2.0? Videos perhaps?

Thanks! Scott

Here's a link to Tyson's build thread. Also, start your own thread where you document your build and as specific questions.

https://www.audiocircle.com/index.php?topic=186045.msg1950582#msg1950582

Enjoy the build.

Marcos DASILVA · « **Reply #118 on:** 29 May 2026, 08:36 pm »

Hi there! Not sure if this is the best way to start my activities on the forum, so please, fell free to guide me accordingly.

I am a long time follower of Peter Rawlings youtube content, always impressed with the quality of his work. Hope to reach out and contact him in due course. Need help with cabinet damage and black piano finish repair of one of my speakers.

I am located in Austin, Texas.

Any guidance would be very much appreciated.

Thanks in advance for your attention.

pstrisik · « **Reply #119 on:** 31 May 2026, 06:44 pm »

Hi Marcos,

I had a pair of Paradigm Signature monitors with piano black finish a while back. I had a moderately deep scratch on one side. I found that using automotive black wax filled in the scratch and matched the overall finish perfectly. I found it at an automotive parts store. It's not permanent and can rub away if handled a lot, but can always be reapplied. Cheaper than a full repair. But, if the damage is more severe, it may not work for you.

......Pete