Sony SS-CS5 Upgrade Kit
$299.00 – $469.00
The price is per pair!
We are now offering a more budget-friendly version of this kit.
Swapping the Sonicaps in the two tweeter circuits for budget polycaps with small 0.1uF bypass caps.
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, a half sheet of No-Rez 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!
Frequency Response Before
Horizontal Off Axis Before
Vertical Off Axis Before
Spectral Decay Before
Impedance Sweep Before
Frequency Response After
Horizontal Off Axis After
Vertical Off Axis After
Spectral Decay After
Impedance Sweep After
Michael Paulson –
I have to admit, when I received the upgrade kit for my Sony SSCS5’s I was more than a little intimidated. I bought a simple soldering iron and a 2 foot square piece of 1/4″ MDF to build the crossovers. Watched a few YouTube videos and looked at a couple of examples on audio forums. Long story short, I finished assembling and installing the upgrade kit. All I can say is WOW!!! I am absolutely in love and blown away by the clarity and transparency. These little guys perform! Blues, Jazz, Rock, vocals, all sound so nice! I plan to replace my 40-year-old towers with these upgraded Sony’s and an RSL 10S MKii subwoofer.
Thank you for the upgrade!
Zeke Lujan (verified owner) –
Buy this NOW! You’ll be glad you did. Read on for more story and details. — I bought the SS-CS5s because of the great reviews for budget level speakers. However, after 3-4 weeks and one particular 2-3 hour listening session I noticed my ears were very uncomfortable and ached. The discomfort went away after a few days of rest, but returned with every listening session. I listen to music at around 70db in my living room, so not too loud, and was very frustrated with the experience. After looking around on audio forums for explanations and recommendations for hearing fatigue I stumbled onto this upgrade from GR Research. Watched the videos on GoogleTube, bought immediately, and had a lot of fun building this project in my garage. So how does it sound? It’s like all the clouds in the auditory sky were gently rolled away and the sun shone warmth on a breezeless spring day. Like cool water from a clear mountain spring to quench a dry thirst. The smell of vanilla in banana bread fresh from the oven. It just felt so “clean”. The previous unending subconscious work my brain accomplished to filter out “noise” and “hear” disappeared, and only musical pleasure remains. Thank you, so so much.