newtronics Floorstanding Speakers Gate 5.1 Temperance Drivers Tweeters/Bass Drivers Tweeters/Bass Drivers 15" Drivers Amplifiers Power Amp

Sub 25 Building Instruction

Cabinet Assembly

The Sub 25 consists of:
- 4 side and bottom panels,
- 3 front and rear panels
- and several small bracing panels.

The baffle consists of one panel with 16 mm and one with 22 mm thickness. These panels are glued together. Inside, there is a bracing panel with two cut-outs to ensure free airflow. The rear panel has to be cut-out to accommodate the subwoofer module. Four holes have to be cut-out in the bottom panel for the bass reflex tubes.

All panels are going to be screwed together (and glued, if required).
Newtronics Sub 25
Afterwards, the amplifier module and the drivers are going to be fitted.

Finally, the feet are going to be mounted. The distance to the floor determines the tuning of the subwoofer, since this is an extension to the bass reflex tubes. Should you want to place the subwoofer close to a corner, then the distance to the floor may be reduced by 5 mm.

Bass reflex tuning

The bottom panel as well as the panel above the second bass driver should be lined with nap foam.

What remains to be done is relatively simple: the subwoofer module needs to be fitted. Then the driver should be connected by squeezing the plug at the red / black cable of the DT 300 or it should be cut off.

The bass driver should be fitted last.

The low bass characteristics of the DT500 are adjustable. We recommend, however, to try the neutral factory setting first. To us this seems to be the best compromise between low bass and volume.

Connecting the subwoofer

Connect the subwoofer to your amplifier (by either using the RCA plug to be connected to the pre-out of your amp, or by connecting the loudspeaker cable to the satellites) and plug the mains cable into the wall socket...

We are sure you will enjoy this great subwoofer. - Should have further questions please give us a call at +49-721-9703724.

Possible modification:
If required the cabinet may designed with 10 cm more depth. The bass reflex tubes remain the same. This results in 2-3 Hz more bass.

Sub 25 Description
Home