2x10? Pah! 4x12? Pshaw! I made me a speaker.

[Sporky McGuffin]

Ladies and gentlemen, I present to you the future of guitar speakers.

The 25 x 1.4".

A close-up. Ignore the dodgy woodworking.

Currently running from my Laney LC15R, but that's to change. Just got the last parts to assemble this beauty - 2x25W class T. Oh yes.

Hand-wound toroids. I'm just that hardcore.

How, you may ask, does it sound? A bit odd. Naff-all bass response (as you might expect) but very rich high mids - it sounds a bit like a resonator, almost. Combined with a regular amp it creates a really full and rich sound - most satisfying. And it really fills the room with sound, as you'd expect of a line array - there's almost no directionality.

I'm thinking next I'll make a 5x5 array with the same speakers. Maybe 6x6 or more in a big 1x12 kit cab.

 

[WhoFan]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

wow that is weird... glad you are having fun

 

[Sporky McGuffin]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Line arrays are well established! Imagine this as just a ghetto Bose L1.

 

[timorousme]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Now you need to make one out of about 5,000 iPod headphones.

 

[Sporky McGuffin]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

I think that'd be too tall to fit into the room.

 

[GoldenVulture]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

For the bottom end ,use some low frequency transducers that can be attached to the nearest available and appropriate surface.

Bass Shaker 4 Ohm 25WRMS 138mm

The Aura Interacter shaker assembly reinvented! We have now successfully sourced a high quality subsonic shaker assembly that will have you experimenters and home theatre enthusiasts drooling. This electromagnetic transducer operates like a loudspeaker however, instead of having a cone it uses a heavy steel mass that transmits a jolt of inertia to give an interactive feel to your home cinema or audio system. Mount multiple units in a lounge for a genuine home theatre experience or in your car to give bass a new meaning to your passengers. All mounting hardware supplied.
Specifications for the subsonic actuator are:
> Operating frequency: Subsonic
> Impedance: 4 ohms
> Music power: 50W max
> RMS power: 25WRMS
> Frequency range: 30 ~ 300 Hz
> Free air resonance: 40Hz
> Minimum mounting surface: 110 x 110mm
> Dimensions: 138 x 138 x 56 mm
> Weight: 1.5kg

Sporky;am i right in thinking i saw a reference to various "things" you had made?I can't find it ,if i did.

 

[Fusion1]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Interesting! Could you post a small how-to for someone interested in building something similar to this? Thanks. Looks like a Bose L1 on crack or something. How tall is it? 8 feet? lol

 

[rashayritto]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

just me thinking about how to make your design more practical (getting that bass response) i expect 30% of all profits :lol:

 

[viewaskew2k5]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

thats hilarious. Just make a wall of them and semi re-invent the opening scene from back to the future. Instead of one huge speaker, a huge wall of little weeny one's!

 

[timorousme]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Whenever you do a gig, you should find some way to hide your best cab and put that one out front so everybody thinks that you're playing through it. Everybody will want one thinking that the sound is amazing and want one.

 

[Sporky McGuffin]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Ta chaps - you're too kind.

For the bottom end ,use some low frequency transducers that can be attached to the nearest available and appropriate surface.

I need a bit more low-mid response than that - these drivers only go down to 600Hz (and I suspect that's -10dB not -3dB, so probably more like 1kHz in practice).

Sporky;am i right in thinking i saw a reference to various "things" you had made?I can't find it ,if i did.

I dunno if there's a "collected works of Sporky" anywhere. I make and sell pedals from www.monkeyfx.co.uk but really that's an excuse to have all the bits and tools for making my own stuff.

Let's think; for myself I've made a handful of BYOC pedals (a delay kit in a wah shell, a TS kit with an added booster, feedback loop and current starve knob and an EQ kit), a 4MS Phaseur Fleur and this.

Interesting! Could you post a small how-to for someone interested in building something similar to this? Thanks. Looks like a Bose L1 on crack or something. How tall is it? 8 feet? lol

Erm... 1.6m including space at the bottom. That's about 5' 3" feet I think.

Basically all I did was buy a stick of planed pine about 2m long, 20mm thick and 60mm wide. I measured and marked up and then drilled out the 25 40mm holes (the speakers being 40mm diameter). I screwed the speakers onto the back of the wood and wired them up in 5 groups of 5 for a total impedance of 8 ohms (multimeter says 6.5 ohms but that's close enough).

It really is just a stick with holes in it and speakers bolted onto the back. I might attach some gutter to the back to hide/protect the wiring. The input jack is just on a trailing wire - at some point I'll get a barrel jack and mount that through the front.

 

[GoldenVulture]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Quote:
Originally Posted by GoldenVulture
For the bottom end ,use some low frequency transducers that can be attached to the nearest available and appropriate surface.

I need a bit more low-mid response than that - these drivers only go down to 600Hz (and I suspect that's -10dB not -3dB, so probably more like 1kHz in practice).

What i referenced was "for example".I was presuming you know the type of device i mean.Thinking laterally;get some that suit specs for your setup.

Quote:
Originally Posted by GoldenVulture
Sporky;am i right in thinking i saw a reference to various "things" you had made?I can't find it ,if i did.

I dunno if there's a "collected works of Sporky" anywhere. I make and sell pedals from www.monkeyfx.co.uk but really that's an excuse to have all the bits and tools for making my own stuff.

Let's think; for myself I've made a handful of BYOC pedals (a delay kit in a wah shell, a TS kit with an added booster, feedback loop and current starve knob and an EQ kit), a 4MS Phaseur Fleur and this.

That's what i remember seeing in another thread.
"Strange question"[this section-amps] thread was trying to emulate "flat battery", and i figured your "Current starve " knob" thing ,might be a solution.

:kabong:Merci! Mon ami!

 

[Sporky McGuffin]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

What i referenced was "for example".I was presuming you know the type of device i mean.Thinking laterally;get some that suit specs for your setup.

I've been looking. Problem is that most subs don't go high enough, and most woofers go too high. Probably I need a woofer and a crossover.

Those are interesting devices though, particularly for home cinema - you get the "thump" of a sub without the enormous bass travel that annoys neighbours...

 

[GoldenVulture]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Those are interesting devices though, particularly for home cinema - you get the "thump" of a sub without the enormous bass travel that annoys neighbours..

Yes! I've got four attached to the floor[wooden of course],underneath my two couch's;for that subsonic "feeling".



:kabong:

 

[Sporky McGuffin]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Now that I'd like to experience!

The other interesting one I found recently is the fan-sub. Absolutely bonkers:

http://www.rotarywoofer.com/index.htm

 

[GoldenVulture]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

Now that's pushing the SPL.Far out!:chairfall

 

[Sporky McGuffin]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

I love the "Flat response down to DC" bit.

 

[GoldenVulture]

Re: 2x10? Pah! 4x12? Pshaw! I made me a speaker.

true response to DC

another"true"item.

I'm wondering if the 200 Watts at 8 Ohms is a minimum.

Some one i know had a pair of "Westlake studio monitors " that required a minimum of 200 Watts.He was running them on a stereo F.O.H. amp.around 10kx10k watts,for a while.

true low frequency limit of human hearing.

another "true".
More like feeling ,by then.