Hi everyone,
I decided to build my own speaker (first build). I said 'speaker' and not 'speakers', as this is intended to be a mono-speaker project. I have a nice mono tube amp to feed this speaker. But I need some advice...
The idea is the following:
In my living room, I have 1 corner available to put a speaker. As our living room, dining room and kitchen are 1 big space, this one speaker is intended to fill the whole room as well as to play background music in mono.
I have the plans to build the 'statement' speaker (see Statement ), but with slightly other dimensions, as it looks are not really WAF-proof. The statement is a 2-way speaker with a horn for the highs. Crossover at 2000Hz. It's design is based upon a cornwall, although it has less height than a cornwall and a down-firing bass port.
Anyway, it seems that corner placement is a big issue, hence my post here.
Following are my options:
1/ build the statement within a Cornwall chassis (or 'Klonwall'), which is a design I like. Since the statement is based upon a cornwall, this shouldn't be too much of a problem i think? The statement is 80cm in height (vs 90cm cornwall) and having its bass port underneeth (vs in front cornwall). Corner placement shouldn't be too much of a problem since CORNwalls are supposed to be place-able in corners.
2/ Build the statement within an Electro-Voice Aristocrat (upscaled for 15" woofer, roughly same dimensions as a cornwall) chassis. The aristocrat was designed for corner placement and is a klipsch-designed (although there is some debate) corner horn. See: retro vintage modern hi-fi: Aristocrat
3/ build the statement, but not in rectangular shape but in 'aristocrat'-shape. this means cutting corners in the back side of the chassis, but keeping internal volume the same by making the speaker larger. The internals of this speaker are not the Aristocrat horn, but stil a BR with down (or front?) firing port.
4/ Build the statement as is. Since we are talking only one speaker here, corner placement issues with stereo speakers are not in play (according to a philips booklet of 1958, mono speakers are best placed in corners, as side walls reflections help fill the room). Or is this not correct, and is a speaker with down-firing port not suited for corner placement?
any opinions and advice is more than welcome!
ps: Plans of the 'Klonwall' (in dutch...), see: Een Klipsch Cornwall wordt een stoere Klonwall zelfbouw luidspreker
I decided to build my own speaker (first build). I said 'speaker' and not 'speakers', as this is intended to be a mono-speaker project. I have a nice mono tube amp to feed this speaker. But I need some advice...
The idea is the following:
In my living room, I have 1 corner available to put a speaker. As our living room, dining room and kitchen are 1 big space, this one speaker is intended to fill the whole room as well as to play background music in mono.
I have the plans to build the 'statement' speaker (see Statement ), but with slightly other dimensions, as it looks are not really WAF-proof. The statement is a 2-way speaker with a horn for the highs. Crossover at 2000Hz. It's design is based upon a cornwall, although it has less height than a cornwall and a down-firing bass port.
Anyway, it seems that corner placement is a big issue, hence my post here.
Following are my options:
1/ build the statement within a Cornwall chassis (or 'Klonwall'), which is a design I like. Since the statement is based upon a cornwall, this shouldn't be too much of a problem i think? The statement is 80cm in height (vs 90cm cornwall) and having its bass port underneeth (vs in front cornwall). Corner placement shouldn't be too much of a problem since CORNwalls are supposed to be place-able in corners.
2/ Build the statement within an Electro-Voice Aristocrat (upscaled for 15" woofer, roughly same dimensions as a cornwall) chassis. The aristocrat was designed for corner placement and is a klipsch-designed (although there is some debate) corner horn. See: retro vintage modern hi-fi: Aristocrat
3/ build the statement, but not in rectangular shape but in 'aristocrat'-shape. this means cutting corners in the back side of the chassis, but keeping internal volume the same by making the speaker larger. The internals of this speaker are not the Aristocrat horn, but stil a BR with down (or front?) firing port.
4/ Build the statement as is. Since we are talking only one speaker here, corner placement issues with stereo speakers are not in play (according to a philips booklet of 1958, mono speakers are best placed in corners, as side walls reflections help fill the room). Or is this not correct, and is a speaker with down-firing port not suited for corner placement?
any opinions and advice is more than welcome!
ps: Plans of the 'Klonwall' (in dutch...), see: Een Klipsch Cornwall wordt een stoere Klonwall zelfbouw luidspreker
This does get the box closer to the corner but it is the source that needs to blend, not the enclosure. The bass will blend because of the long wavelengths. The treble has the directivity of the horn to keep it off the walls.
This leaves midrange modes and room modes. These were less of a consideration when the cornwalls were originally designed.
Allen, thanks for your reaction. If I understand correctly, you are saying midrange reflection was less of a concern during the mono era than it is now? (I guess because of different types of music being played, as you are talking about the source that needs to blend?).
If so, this means corner placement remains an issue using a single speaker. In that case, since this corner is the only place where I can but a speaker right now, which design would fit best in your opinion (midrange-wise):
- statement design as is, with down firing port
- klipsch cornwall design, with port in front
- EV aristocrat design, with the back of the speaker acting as some kind of horn (however in essence being a BR design)
thanks!
If so, this means corner placement remains an issue using a single speaker. In that case, since this corner is the only place where I can but a speaker right now, which design would fit best in your opinion (midrange-wise):
- statement design as is, with down firing port
- klipsch cornwall design, with port in front
- EV aristocrat design, with the back of the speaker acting as some kind of horn (however in essence being a BR design)
thanks!
No, not because of mono. Corner speakers are excellent, they are also the most difficult to design.
So if I understand correctly, I should stick with a proven corner design (i.e. cornwall or aristocrat) instead of building the statement speaker as is or just cutting its corners to make it fit.
This brings me to my next question: If I install the drivers and horn of the statement speaker into a cornwall cabinet (BR) or an upgraded aristocrat cabinet (Horn) , can I do this without having to adjust too much to the Original crossover of the statement speaker?
by the way: this is a drawing of our living room. Speaker is to be placed in the upper left corner.
This brings me to my next question: If I install the drivers and horn of the statement speaker into a cornwall cabinet (BR) or an upgraded aristocrat cabinet (Horn) , can I do this without having to adjust too much to the Original crossover of the statement speaker?
by the way: this is a drawing of our living room. Speaker is to be placed in the upper left corner.
I think by being broad with my answers it is making it more difficult... If you put the statements in the other cabinet, you then give them corner placement and corner bass loading, I can see three things standing out that will be different from the original.
One is a broad efficiency increase in the bass due to it working into eighth space rather than full. This will then be more smooth than the original due to the more careful arrangement of earlier reflections.
Then there is an increase in midrange reflections due to the midrange not being 'built in' to the corner, but instead being placed 'close to' it. This may produce response and spatial variations.
Thirdly, your bass will encounter variations due to the more distinct excitation of the room modes from the corner.
You will have to measure to know what to do. You will have to incorporate the corner into these measurements as it becomes part of the speaker.
One is a broad efficiency increase in the bass due to it working into eighth space rather than full. This will then be more smooth than the original due to the more careful arrangement of earlier reflections.
Then there is an increase in midrange reflections due to the midrange not being 'built in' to the corner, but instead being placed 'close to' it. This may produce response and spatial variations.
Thirdly, your bass will encounter variations due to the more distinct excitation of the room modes from the corner.
You will have to measure to know what to do. You will have to incorporate the corner into these measurements as it becomes part of the speaker.