Upgrade Kits For Vintage & New Speakers

For further information about all DIY kit models please visit the official Troels Gravesen Website: Click here


B&W 802 S3 Matrix – Upgrade Kit

Replacing the original crossover components with modern components


Chario Sonnet

Replacing the original crossover components with better components


Dali 800 Renovation

New crossover design with modern components


JBL L100

New crossover design with modern components

Made for these drivers only:
123A bass units, LE5-2 Midrange drivers, LE20, LE25 or LE26 tweeters.


JBL L112

Replacing the original crossover components with modern component

Made for these drivers only:
128H bass units, LE5-12 Midrange drivers & JBL 044 tweeters


JBL L26 – 2-way

New crossover design with modern components


Tannoy MG15

New crossover design with modern components


Yamaha NS1000M

New crossover design with modern components