| Author |
Topic: Yet another Microcube introduced by Roland at Winter NAMM |
Gerald Ross
From:
Ann Arbor, Michigan, USA
|
|
|
|
Bill Creller
From:
Saginaw, Michigan, USA (deceased)
|
Posted 17 Jan 2008 8:58 pm |
|
Maybe they are trying to stay ahead of the competition 
Wonder how much power it has, in watts. Even 3 watts can be fairly loud. |
|
|
|
Matt Kidney
From:
Galway, Eire
|
Posted 18 Jan 2008 2:12 am
|
|
I've heard nothing but good things about the Microcube from metalheads to jazz fiends etc
_________________
www.myspace.com/pboy |
|
|
|
Bill Hatcher
From:
Atlanta Ga. USA
|
Posted 18 Jan 2008 6:09 am
|
|
| Think about the 4 4" speakers. That is 16" of speaker cone area in such a small package. The low end would probably be nice. |
|
|
|
Peter Jacobs
From:
Northern Virginia
|
|
|
|
Gerald Ross
From:
Ann Arbor, Michigan, USA
|
Posted 18 Jan 2008 6:25 am
|
|
Peter - It's a hot topic because many of the Baby Boomer musicians are looking to slim down the size and weight of the gear they carry to gigs (it's a lot easier than slimming down your waist size).
Bill Hatcher - you're joking right? If I assembled a speaker box with 16 one inch speakers and tried to play a bass through it I doubt I would get a big sound.
_________________
Gerald Ross
'Northwest Ann Arbor, Michigan's King Of The Hawaiian Steel Guitar'
A UkeTone Recording Artist
CEO, CIO, CFO - UkeTone Records
Gerald's Hawaiian Steel Guitar/Ukulele Website |
|
|
|
Bill Hatcher
From:
Atlanta Ga. USA
|
Posted 18 Jan 2008 6:44 am
|
|
| Gerald Ross wrote: |
Peter -
Bill Hatcher - you're joking right? If I assembled a speaker box with 16 one inch speakers and tried to play a bass through it I doubt I would get a big sound. |
http://www.bcae1.com/subwoofr.htm
Excuse me sir, but please don't ever insinuate that I am "joking". Anyone with the slightest knowledge of speaker enclosure design would know that the cone area offered in a cabinet is one of the main factors in bass response along with the porting and cabinet design.
If you look at classic designs like the 8-10" Ampeg SVT or better yet the switch at Fender from the early single 15" cabinet to 4 10" speakers to improve bass tone you would realize the principal.
Go to the link and read the section on cone area. I Googled "cone area bass" and that is just one of the links that came up. It is in reference to subs, but the principal is the same and the reference to low end is relevant to the mini cube. |
|
|
|
Gerald Ross
From:
Ann Arbor, Michigan, USA
|
Posted 18 Jan 2008 6:48 am
|
|
Calm down Bill. I didn't mean to get your dander up.
I don't know anything about electronics. Opening up an amplifier scares the hell out of me. I also don't own any power tools, they scare the hell out of me too.
But to my uneducated mind it seems that sixteen one inch speakers will not sound like one big sixteen inch speaker.
_________________
Gerald Ross
'Northwest Ann Arbor, Michigan's King Of The Hawaiian Steel Guitar'
A UkeTone Recording Artist
CEO, CIO, CFO - UkeTone Records
Gerald's Hawaiian Steel Guitar/Ukulele Website |
|
|
|
Bill Hatcher
From:
Atlanta Ga. USA
|
Posted 18 Jan 2008 7:00 am
|
|
http://www.acoustics.salford.ac.uk/student_area/bsc2/transducers_for_music/Notes/TM_Lecture7.doc
Go here and open this file and you will learn something.
Your analogy of 16 one inch speakers has no merit. You cannot name me one amplifier for guitar that uses any combination of one inch paper cone speakers.
There have been several amplifiers that have used multiple numbers of 8" and 4" speakers in order to shape the low end and improve the output of smaller cabinets. |
|
|
|
Gerald Ross
From:
Ann Arbor, Michigan, USA
|
Posted 18 Jan 2008 7:05 am
|
|
Bill,
Like I said... opening up an amplifier scares the hell out of me.
Now, thank you for directing me to that article, but opening up that document, looking at the mathematical equations, graphs and charts SCARES THE HELL OUT ME. 
But just humor me for a second.
My laptop computer has two 1" speakers.
If I built a cabinet with 16 of these speakers and played an electric bass through it would it sound like a 16" speaker in terms of a big-fat bottom-end bass tone?
_________________
Gerald Ross
'Northwest Ann Arbor, Michigan's King Of The Hawaiian Steel Guitar'
A UkeTone Recording Artist
CEO, CIO, CFO - UkeTone Records
Gerald's Hawaiian Steel Guitar/Ukulele Website |
|
|
|
Carey Lainhart
From:
Upstate New York, USA
|
Posted 18 Jan 2008 7:15 am
|
|
| Four 4" speakers have the same area as one 8" speaker. |
|
|
|
Bill Hatcher
From:
Atlanta Ga. USA
|
Posted 18 Jan 2008 7:16 am
|
|
| Gerald Ross wrote: |
Bill,
But just humor me for a second.
My laptop computer has two 1" speakers.
If I built a cabinet with 16 of these speakers and played an electric bass through it would it sound like a 16" speaker in terms of a big-fat bottom-end bass tone? |
Are you going to use a 16" speaker that has the same magnet structure that you are using on the 1 " speaker?? |
|
|
|
Gerald Ross
From:
Ann Arbor, Michigan, USA
|
|
|
|
Bill Hatcher
From:
Atlanta Ga. USA
|
Posted 18 Jan 2008 7:31 am
|
|
| Carey Lainhart wrote: |
| Four 4" speakers have the same area as one 8" speaker. |
Carey.
I just assumed that 4 X 4 =16 and that would give you more cone area in the four 4" speakers than in just one 8" speaker assuming the voice coil diameter is the same in all.
Is there another formula for figuring cone area in a speaker?
Answer is yes and I was never good at geometry.
Last edited by Bill Hatcher on 18 Jan 2008 8:43 am; edited 1 time in total |
|
|
|
Bill Hatcher
From:
Atlanta Ga. USA
|
Posted 18 Jan 2008 7:44 am
|
|
| Gerald Ross wrote: |
| I don't know... Yes, I guess. |
Then if you used a 16" speaker with the same magnet structure, the same paper thickness , the same frame thickness etc as your 1" speakers and put that in a cabinet and then installed 16 one inch speakers in an identical cabinet and wired them up to have the same impedence as the single 16" speaker you should have a tighter bass response and much better upper freg. sound in the 16 1" speaker cab.
Surely you are not visualizing a comparison of multiple one inch tiny computer speakers with say a 50 pound magnet structure cast frame 16" speaker are you? |
|
|
|
Carey Lainhart
From:
Upstate New York, USA
|
Posted 18 Jan 2008 8:23 am
|
|
| You would need 256 one inch speakers to equal the air-moving surface area of one 16 inch speaker. |
|
|
|
Bill Hatcher
From:
Atlanta Ga. USA
|
Posted 18 Jan 2008 8:41 am
|
|
| Carey. Thanks for reminding me that I made a D in Geometry. The area of the circle and pi and all that. |
|
|
|
Bill Creller
From:
Saginaw, Michigan, USA (deceased)
|
Posted 18 Jan 2008 4:24 pm
|
|
Pi R square doesn't lie. But the area of the cone may not be the only effect. Magnets, voice coil etc have to be in the equation. Hard to figure if the air movement of say a 12 inch cone vs a few small cones of the same equal area would be the same (??)
The small speakers seem to have improved a lot in recent years. My PC has some JBLs hanging on the monitor which really amaze me. 
All this may help save our backs when amps get smaller and lighter. My Vibrosonic Reverb weighs 84 lbs!! |
|
|
|
Keith Cordell
From:
San Diego
|
Posted 18 Jan 2008 4:30 pm
|
|
| The only thing I understood about that was pi... and I'll take a slice of blueberry, please. |
|
|
|
Rick Aiello
From:
Berryville, VA USA
|
Posted 18 Jan 2008 4:55 pm
|
|
Well, I waited awhile to respond ....
| Quote: |
| Is there another formula for figuring cone area in a speaker? |
It's not as simple as finding the area of a circle (pi x radius squared).
The surface area of an "open" cone is given by the following formula ...
r is the radius of the cone
h is the height of the cone
But there are so many other factors involved ... if anyone really wants to ...
| Quote: |
Go here and open this file and you will learn something.
|
Click here ... http://www.thielesmall.com/database.asp ... and look at real data from real speakers ...
Effective piston area ... "Sd" ... (basically cone area) ... is just one of the many of variables associated with "moving air" ...
That said ... some Sd values from real speakers*:
35 cm diameter speaker ... 835 square centimeter
16 cm diameter speaker ... 141 square centimeter
10 cm diameter speaker ... 61 square centimeter
I don't know crap about speaker and enclosure design ... but I do know Gerald was right on target when he said ...
| Quote: |
| But to my uneducated mind it seems that sixteen one inch speakers will not sound like one big sixteen inch speaker. |
As far as the magnet issue ... that I can speak with authority ...
| Quote: |
| Surely you are not visualizing a comparison of multiple one inch tiny computer speakers with say a 50 pound magnet structure cast frame 16" speaker are you? |
Maybe not little computer speaker magnets ... but since most of the 50 pounders you speak of are Alnico or Ferrite based ...
Well, that mass can be (and is being) greatly reduced by using neodymium-iron-boron ... and matching the total flux generated by one big alnico magnet can easily be achieved and exceeded by using multiple NIBs.
* from ... http://www.lautsprechershop.de |
|
|
|
Ron Whitfield
From:
Kaaawa, Hawaii, USA
|
Posted 18 Jan 2008 5:18 pm
|
|
| I'll take a fat slice of blackberry, thank you. |
|
|
|
Craig Stenseth
From:
Naperville, Illinois, USA
|
|
|
|
Gerald Ross
From:
Ann Arbor, Michigan, USA
|
Posted 19 Jan 2008 7:15 am
|
|
I don't think I'll get the new Roland.
I'm happy with the Roland Cube Street. The two channels, both with effects are perfect for me. I run either my guitar or steel thru one channel and my uke through the other one. No need to switch cables on instruments.
The only thing I don't like about the Cube Street is the placement of the controls. Because the cabinet is a slant design with the speakers aimed at a 45 degree angle, the controls are also at that angle and hard to see. I find myself tilting the amp forward when I need to adjust volume or tone.
_________________
Gerald Ross
'Northwest Ann Arbor, Michigan's King Of The Hawaiian Steel Guitar'
A UkeTone Recording Artist
CEO, CIO, CFO - UkeTone Records
Gerald's Hawaiian Steel Guitar/Ukulele Website |
|
|
|
Brad Bechtel
From:
San Francisco, CA
|
Posted 19 Jan 2008 9:36 am
|
|
Moved to Electronics. Gerald, do you have one yet? 
_________________
Brad’s Page of Steel
A web site devoted to acoustic & electric lap steel guitars |
|
|
|
Dan Tyack
From:
Olympia, WA USA
|
Posted 19 Jan 2008 10:36 am
|
|
| Pie R not square, Pie are round. |
|
|
|
