The passion for high quality audio. http://www.gr-research.com/.
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149 Replies
189045 Views |
12 Jan 2026, 07:48 amby fre11111 |
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410 Replies
559409 Views |
2 Jan 2026, 08:39 pm by J-dav |
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374 Replies
603264 Views |
23 Dec 2025, 01:26 am by tortoiseman2542 |
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77 Replies
147223 Views |
24 Nov 2025, 08:48 pm by nostatic |
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226 Replies
437307 Views |
13 Nov 2025, 04:52 am by JonathanWalton7 |
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244 Replies
423387 Views |
11 Nov 2025, 05:36 am by AcidTest |
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112 Replies
231031 Views |
4 Nov 2025, 06:01 pm by corndog71 |
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OB H/W Frame Wiring Info / Diagrams
Started by Captainhemo « 1 2 3 » |
53 Replies
135222 Views |
30 Aug 2025, 12:56 am by racerxnet |
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113 Replies
223910 Views |
7 Jun 2025, 01:22 pm by S Clark |
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Electra tube connector installation instructions.
Started by Danny Richie « 1 2 3 4 » |
77 Replies
232018 Views |
14 Mar 2025, 06:30 pm by peporter |
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169 Replies
327166 Views |
12 Mar 2025, 06:11 am by kuroda99 |
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Speakers Stacked on OB Subs
Started by Bucketoftruth2000 |
11 Replies
930 Views |
Yesterday at 03:00 pm by corndog71 |
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21 Replies
13796 Views |
15 Jan 2026, 08:50 pm by BrandonB |
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Dodd Battery Preamp health check
Started by S Clark |
2 Replies
807 Views |
15 Jan 2026, 06:52 pm by S Clark |
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My HP Filter effort
Started by pstrisik |
2 Replies
1784 Views |
15 Jan 2026, 06:32 pm by Danny Richie |
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Why no video on the x-Omni Towers?
Started by NIGHTFALL1970 |
6 Replies
1548 Views |
14 Jan 2026, 08:36 pm by NIGHTFALL1970 |
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Dr Tom’s NX-Tremes
Started by Norman Tracy |
16 Replies
7613 Views |
14 Jan 2026, 04:13 pm by BenjaminWebber |
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23 Replies
2550 Views |
14 Jan 2026, 06:08 am by Tyson |
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A nearly two hour interview
Started by Danny Richie |
0 Replies
692 Views |
13 Jan 2026, 04:10 pm by Danny Richie |
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Tannoy Canterbury crossover notch filter
Started by Spender |
1 Replies
656 Views |
13 Jan 2026, 03:15 am by Danny Richie |
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89 Replies
27978 Views |
11 Jan 2026, 10:29 pm by goggle1824 |
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14 Replies
9170 Views |
11 Jan 2026, 02:50 am by NXSTUDIO-DRUMMER |
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77 Replies
27092 Views |
9 Jan 2026, 08:08 pm by Bucketoftruth2000 |
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86 Replies
55090 Views |
8 Jan 2026, 05:47 pm by YEEEEGZ |
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Vented vs Ported?
Started by johnwoitalla |
5 Replies
1225 Views |
8 Jan 2026, 05:09 am by FullRangeMan |
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4 Replies
1289 Views |
7 Jan 2026, 04:33 am by S Clark |
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Av123/GR LS9 LS6 ports
Started by VinceT |
6 Replies
2972 Views |
3 Jan 2026, 04:36 am by NXSTUDIO-DRUMMER |
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Bravo VS Bravo?
Started by Rikard Ekval « 1 2 » |
21 Replies
13472 Views |
2 Jan 2026, 09:07 pm by J-dav |
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Upcoming stuff
Started by BrandonB |
2 Replies
2877 Views |
31 Dec 2025, 11:43 pm by Danny Richie |
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GR headphone amp impressions
Started by mlundy57 |
2 Replies
1242 Views |
31 Dec 2025, 10:06 pm by mlundy57 |
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