![Dave Grohl posted this picture on the Sound City Facebook page this morning, what is the speaker infront of his kick for? : r/audioengineering Dave Grohl posted this picture on the Sound City Facebook page this morning, what is the speaker infront of his kick for? : r/audioengineering](https://i.redd.it/3epefpkj9hn41.jpg)
Dave Grohl posted this picture on the Sound City Facebook page this morning, what is the speaker infront of his kick for? : r/audioengineering
2 Reference kick-drum frequency responses (no subwoofer/isolation shield) | Download Scientific Diagram
![Dcenta Bass Drum Enhancer Adjustable ABS Rubber Bass Drum Kick Enhancer with Protection Sticker Bass Drum Head Port Hole Protector - Walmart.com Dcenta Bass Drum Enhancer Adjustable ABS Rubber Bass Drum Kick Enhancer with Protection Sticker Bass Drum Head Port Hole Protector - Walmart.com](https://i5.walmartimages.com/asr/6e57b88c-a2e0-4dc7-b19e-3f0122e065c8.c7b69a9d9d222bb910610dd15c0582d6.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Dcenta Bass Drum Enhancer Adjustable ABS Rubber Bass Drum Kick Enhancer with Protection Sticker Bass Drum Head Port Hole Protector - Walmart.com
1 Measurement setup for kick-drum and drum subwoofer system (A = B52A,... | Download Scientific Diagram
![2003 DW Collectors 20x8 Maple Bass Kick Drum Subwoofer in Black Satin - Gold Badge Very Nice! | Reverb 2003 DW Collectors 20x8 Maple Bass Kick Drum Subwoofer in Black Satin - Gold Badge Very Nice! | Reverb](https://images.reverb.com/image/upload/s--YIrR7RWt--/a_exif,c_limit,e_unsharp_mask:80,f_auto,fl_progressive,g_south,h_620,q_90,w_620/v1501869118/dofismeudmrfmh9olrms.jpg)