Open Back Speaker Cabinet Design

For 3 way systems placing the midrange in a separate internal enclosure produces cleaner midrange performance.

Open back speaker cabinet design. How does a closed back cabinet produce any sound then. To design these types of cabinets start with the number of drivers. Well it takes the air a little while to get from the front of the cabinet round the sides to the back. Speaker cabinet with an open back.

Remember that twice the number of drivers doesn t necessarily equate to twice the sound output due to acoustic coupling and standing wave cancellation in the room. The open back cab means that sound is dispersed through both the back and front of the speaker. Open backed cabs are exactly what the name suggests. The air would just be rushing around the speaker to the back.

This is typically required for all drivers except the tweeter. The size and shapes are two more. Open back as a general rule open back and partially open back cabinets have a more airy sound to them. To examine the open back cabinet let s consider the classic models of fender tweed and blackface guitar combos correctly speaking most of these are partly open back as upper and lower panels still enclose between a quarter and three quarters of the back.

Building a diy speaker. Chamfer the back of all open back driver cutouts to allow for better airflow behind the driver. Some feel that open back cabinets reproduce a guitar more naturally. Because of that you will often see diy in a more compact form.

An open back cabinet is one in which the speakers aren t sealed inside the enclosure. The sound seems to be all around the amp your drummer who is behind you onstage will appreciate that. And finally the back of the cabinet open or closed. The high end has lots of presence and the low end is moderate.

In general open backed cabs have a room filling quality and sound open and natural. If i just had a speaker not in a cabinet at all it would produce almost no sound. With open back cabinets size isn t the most critical factor. The number of speakers and size of speakers.

The much more important thing is how you build the cabinet itself. In this design sound is less directional because it issues from the front and back of the enclosure broadening its dispersion coverage basically in the room. The wood used is one variable. When we talk about speaker cabinets there aren t too many variables.

The box isn t there to amplify or shape the sound of the speaker. The mids and lows are not as hard hitting or pronounced. The speaker cabinet is massively important. That is the back is open or partially open.