Velodyne SC-600 In-Wall Subwoofer



The back of the SC-600 amplifier allows for speaker-level inputs with spring clip connections or line-level (RCA) inputs. You can only power one sub at a time with this amp, but you can "daisy chain" another amp using the RCA "thru" jacks. I used the LFE line input from my pre/pro and ran 14-gauge speaker wire from the amp to the sub.

Velodyne SC-600 In Wall Subwoofer

For a more finished look, I used a speaker wire wall plate located along the baseboard and connected through it to the sub. The connections on the sub are spring posts and you will be hard pressed to get anything larger than 14-gauge to fit into them. The clips provided a very tight fit, which is good, because you do not want the wires coming off after the unit has been installed.

Once wired, the sub slipped nicely into the cut opening and secured onto the drywall with six sheetrock dog toggles that flip up and grip the drywall firmly as you tighten them down. Four long wood screws are deployed through the inside wall of the sub to secure it to the inside studs. All of these screws hold the subwoofer securely into place and prevent any unwanted vibrating or rattling. And just like that, the job was done!

Velodyne SC-600 In Wall Subwoofer

The hardest part (if you can really call it that) was putting the grille in place. It was bit flimsy and flexed when I tried to put it in place which caused a corner to bend out. After a bit of negotiating, I managed to secure it into place and with a few light taps. The outside edge was close to flush with the wall and after painting, it became well blended and unobtrusive. If you choose, you can spray paint the grille and edge. A cover sheet is provided to protect the drivers from splashed paint.

Velodyne SC-600 In Wall Subwoofer

The final step was running the EQ. As mentioned, the SC-600 amp comes with a supplied microphone that plugs into the front of the amp. Once the amp and sub are connected and powered up, you plug in the microphone and place it in your favorite listening position. After pressing the EQ button on the remote, the subwoofer emits 12 "sweep tones" that run frequencies between 20-150Hz. After the EQ program runs, it saves the settings and returns to normal operating mode. I would recommend running the EQ anytime you re-arrange your furniture or equipment rack as this can change the frequency response in the listening area. I was pleased with the sound that the EQ program provided.

I tried the phase adjustments and settled for the default zero degree setting. I could not discern an audible difference with the other phase positions so I just left it on default. Night Mode reduces the output so as not to wake the kids for late night listening. The other custom modes, Movie, Rock and Game bump up the volume and EQ to provide more impact and "boom". I preferred Classical/Jazz as it provide the smoothest frequency response of all the other modes.

I am a firm believer that "truth trumps thump". You can manually turn the amp ON/OFF or use auto signal sensing to power it up when an audio signal is being detected. When no signal is detected, the amp shuts down after 10 minutes and remains in a stand-by mode. In Night Mode, the ON indicator light dims. After extended usage, I noticed that the amp stayed cool and never became more than warm to the touch.