Custom Speakers
For a custom quote, please send an email to contact@samuel-cooper.com
The SC Active
The SC Active
The SC 450
The SC 450
Gated SPL
Distortion (High listening level)
The SC 400
The SC 400
Similarly to the SC 300, the SC 400 makes use of the high performing SB Acoustics drivers but in a slightly smaller form factor.
Similarly to the SC 300, the SC 400 makes use of the high performing SB Acoustics drivers but in a slightly smaller form factor.
The tight acoustic centre, carefully placed tweeter for a smooth diffraction profile and perfectly in phase crossover between the woofer and the tweeter gives the SC 400 an impressive soundstage allowing the speakers to disappear when listening to music. The most detailed, clear and open sounding speaker that I have built, certainly with the best imaging.
The tight acoustic centre, carefully placed tweeter for a smooth diffraction profile and perfectly in phase crossover between the woofer and the tweeter gives the SC 400 an impressive soundstage allowing the speakers to disappear when listening to music. The most detailed, clear and open sounding speaker that I have built, certainly with the best imaging.
The SC 400 still produces a full and fast low end response thanks to the braced ported enclosure that can definitely cope by itself without a subwoofer. They sound a lot bigger than they are.
The SC 400 still produces a full and fast low end response thanks to the braced ported enclosure that can definitely cope by itself without a subwoofer. They sound a lot bigger than they are.
The SC Studio Mk2 SE
The SC Studio Mk2 SE
The second version of the SC Studio built specifically for a customer. The high placement of the tweeter gives a smooth diffraction profile with the woofer close underneath to allow for a tight acoustic centre - meaning that this SC Studio speaker is perfect for near-field on desk use. The front firing bass reflex port allows for use near walls, and the crossover and bass output is optimised for this.
The second version of the SC Studio built specifically for a customer. The high placement of the tweeter gives a smooth diffraction profile with the woofer close underneath to allow for a tight acoustic centre - meaning that this SC Studio speaker is perfect for near-field on desk use. The front firing bass reflex port allows for use near walls, and the crossover and bass output is optimised for this.
Designed for studio work, the frequency response is very flat, with a response of 55-20000hz +- 2.5dB in 2π space (in room response will go lower). The off axis roll off is very smooth and the speaker has low levels of distortion.
Designed for studio work, the frequency response is very flat, with a response of 55-20000hz +- 2.5dB in 2π space (in room response will go lower). The off axis roll off is very smooth and the speaker has low levels of distortion.
The speaker uses a Peerless paper diaphragm 5.25 inch woofer with great off axis response up to 3kHz where a Peerless ring radiator tweeter takes over.
The speaker uses a Peerless paper diaphragm 5.25 inch woofer with great off axis response up to 3kHz where a Peerless ring radiator tweeter takes over.
Distortion (high listening level)
On Axis Response (1/6 Octave smoothing)
Off Axis roll-off, Steps of 10 degrees (0° - 50°)
Rear View
Taking Measurements
The Crossover
The Model
The SC 300
The SC 300
The SC Studio
The SC Studio
Using frequency response measurements taken from the drivers in the enclosure, this studio speaker was designed to have a completely flat frequency response. The custom crossover, created using these measurements, helps achieve this very musical yet natural flat response. The bass reflex design helps the bass extension in the small cabinet size resulting in a very deep sound. The front facing port allows for placement close to walls for use in smaller rooms - where room gain improves the bass extension even further to help the natural roll off. This produces an F6 in room at around 38Hz.
Using frequency response measurements taken from the drivers in the enclosure, this studio speaker was designed to have a completely flat frequency response. The custom crossover, created using these measurements, helps achieve this very musical yet natural flat response. The bass reflex design helps the bass extension in the small cabinet size resulting in a very deep sound. The front facing port allows for placement close to walls for use in smaller rooms - where room gain improves the bass extension even further to help the natural roll off. This produces an F6 in room at around 38Hz.
A Danish Oil treated walnut veneer was used for the front baffle with the rest of the cabinet painted matte black. The frequency response data can be seen below.
A Danish Oil treated walnut veneer was used for the front baffle with the rest of the cabinet painted matte black. The frequency response data can be seen below.
SC Studio SPL.jpg
Cabinet construction
Taking Measurements for the Crossover
The Crossover
Sanding down cabinet
Applying Primer
Painting matte black
Applying Veneer
Applying Danish Oil
The Transmission Line
The Transmission Line
Using the modelling software hornresp, the speaker was designed around the transmission line theory of loudspeakers. The speaker interior consists of a 'line' that is tuned to match the woofers parameters. This improves bass response of the speaker without compromising on group delay from the cabinet output. The woofer is offset along the line to cancel harmonics for a smoother output. More info on T-Lines can be found at www.quarter-wave.com. The crossover was designed using VituixCad and FRD and ZMA files from the drivers.
Using the modelling software hornresp, the speaker was designed around the transmission line theory of loudspeakers. The speaker interior consists of a 'line' that is tuned to match the woofers parameters. This improves bass response of the speaker without compromising on group delay from the cabinet output. The woofer is offset along the line to cancel harmonics for a smoother output. More info on T-Lines can be found at www.quarter-wave.com. The crossover was designed using VituixCad and FRD and ZMA files from the drivers.
The outside is spray painted black with a Danish oil finished oak wood veneer on the front.
The outside is spray painted black with a Danish oil finished oak wood veneer on the front.
The speaker ranges from 30Hz to 30kHz +- 3dB.
The speaker ranges from 30Hz to 30kHz +- 3dB.
Layout of cabinet
Creating Baffles
The Crossover
Applying Veneer
The Bass Reflex
The Bass Reflex
This was my first attempt at building a set of speakers. I used modelling software to calculate the internal volume and dimensions of the port required for a smooth but punchy sound using a bass reflex system. Most of the components are from Dayton Audio. All in all the project was a success, and after just listening to their pleasing sound as an MDF box for a long while, they are now wrapped in matte while vinyl.
This was my first attempt at building a set of speakers. I used modelling software to calculate the internal volume and dimensions of the port required for a smooth but punchy sound using a bass reflex system. Most of the components are from Dayton Audio. All in all the project was a success, and after just listening to their pleasing sound as an MDF box for a long while, they are now wrapped in matte while vinyl.
Building the Cabinet
Fitting the Baffle
The Crossover
Testing the speaker