OUR CORE SERVICES
UPGRADES
Unlock true audiophile transparency with precision crossover modifications and component matching for home or studio systems.
REPAIR
Meticulous restoration for passive speakers of all brands, returning hardware to peak operation with a focus on long-term durability.
RE-DESIGN
Targeted technical adjustments and acoustic balancing to ensure a perfectly transparent response tailored to your listening space.
Speakers we have worked on
Acoustic Research, ADS, Advent, Altec Lansing, B&W, Bag End, Bose, Cerwin Vega, Definitive Technology, Dynaudio, Electro‑Voice, Infinity, JBL, KEF, Klipsch, Magnepan, MartinLogan, Mirage, Mission, Paradigm, Peavey, Polk Audio, Snell, Tannoy, Vandersteen, Wharfedale, and many more.
Why Upgrade Your System?
Speakers are the heart and soul of your system.
No other component changes your sound as much as your speakers.
Inside every upgrade: precision-matched components for better sound.
Technical Excellence
Engineer and Design
We utilize advanced acoustic modeling and material science to optimize every component of your speaker system for maximum fidelity.
HI-FI MODIFICATIONS
Our team specializes in cost-effective upgrades that transform consumer-grade systems into audiophile-level performers without breaking the bank.
RESTORATION & REPAIR
We restore and upgrade vintage, current, and professional speakers to keep their original vibe while adding refinement, preserving technical integrity, and improving sonic clarity.
Real Results from Real People
Finding Tim was a lifesaver. I spent a month’s salary on some amazing speakers in the 1970s. After more than 50 years of wear, they sounded muddy, but Tim expertly salvaged the original drivers and precision-upgraded the crossovers. Now they deliver incredible imaging and punchy bass. For honest, transformative audio work, Tim is truly the best.
Bill F. – St. Louis
“My B&W Matrix 800s were missing their tweeters and crossovers. Just last year I found Tim, and he matched a great set of Morel tweeters and replicated the original crossovers with improvements for the tweeter and phasing. I couldn’t be happier.”
Mike M. – Las Vegas, NV
“I brought Tim my 55-year-old Pioneer CS-63DX speakers. He replaced all the capacitors with modern, long-lasting ones. I was surprised how affordable it was, and they definitely sound better than ever!”
Dave H. – St. Peters, MO
“Tim built me a custom audiophile speaker with high-sensitivity pro parts in 1986, and I loved them for years. When my 500-watt amplifier failed, it took the speakers with it. Now almost exactly 40 years later I brought Tim my cabinets back and he built another custom 15-inch, 3-way pure audiophile speaker. I can’t believe I own speakers of this quality.”
Tony B. – St. Louis
“My parents have a beautiful pair of JBL L100T speakers and I wanted them upgraded. Tim replaced the foam and did some updates—WOW, these things sound great!”
Rabia H. – Los Angeles, CA
"I've had the fortune of Tim teaching me high end through my audio journey. Whether a 2a3, EL34, 6550, Pass Labs, Technics Digital and many speakers, including his own 3-way MTM that mated so well with my CJ Premier 11a that I regret losing them. I can still hear the top end floating in the air to what seemed like forever. He has a passion. Rest assured you can trust him. He'll help you get the sound you never thought possible and always at a great price."
Ed S. – Tampa, FL
Get in Touch
info@speakerupgrades.com
Location
St. Charles, Missouri | 636-443-5233
