SVS Ultra Bookshelf Upgrade Kit (Pair)
$320.00
The price is per pair! The price of Sonicaps have just gone up and it caused a slight increase in the cost of this upgrade. This kit includes everything you need to correct a number of issues and take this speaker to another level across the board. Please see the videos and measurements in the accordion below. The kit includes all new parts, a set of tube connectors and new wiring.
Upgrade Kit Measurements
Take a look at the before and after measurements. With the modification kit, there is no question that you will not only end up with a subjectively better sounding speaker, but the measurements back it up as well!
Before
![svs-bookself-crossover-response_orig](https://i0.wp.com/gr-research.com/wp-content/uploads/2021/10/svs-bookself-crossover-response_orig.jpeg?resize=640%2C480&ssl=1)
![horizontal off ais](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/horizontal-off-ais.jpg?resize=640%2C480&ssl=1)
![vertical off axis](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/vertical-off-axis-2.jpg?resize=640%2C480&ssl=1)
![csd](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/csd-5.jpg?resize=640%2C480&ssl=1)
![impedance](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/impedance-5.jpg?resize=640%2C480&ssl=1)
After
![svs-bookself-new-crossover_orig](https://i0.wp.com/gr-research.com/wp-content/uploads/2021/10/svs-bookself-new-crossover_orig.jpeg?resize=640%2C480&ssl=1)
![horizontal off axis](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/horizontal-off-axis-1.jpg?resize=640%2C480&ssl=1)
![vertical off axis](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/vertical-off-axis-3.jpg?resize=640%2C480&ssl=1)
![csd](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/csd-6.jpg?resize=640%2C480&ssl=1)
![impedance](https://i0.wp.com/gr-research.com/wp-content/uploads/2023/08/impedance-6.jpg?resize=640%2C480&ssl=1)