Re: Switching speakers
- From: "Phil S." <psymonds_no_spam@xxxxxxxxxxx>
- Date: Mon, 17 Nov 2008 08:06:39 -0500
"Squier" <squier@xxxxxxxxxx> wrote in message
news:161120080339247801%squier@xxxxxxxxxxxxx
Michael L Kankiewicz <michaelk@xxxxxxxxxxx> wrote:
Well I haven't been over here in quite a while - seems to be all
politics.
I hope an amp person is still here.
I am a musician, not an amp tech, so bear with me. I have a Roland Cube
60 that I use for light jazz jobs, pit orchestra work, etc. I have 2
spare Celestion speakers laying around, a G12H-100 and a G12T-85. If
they
would fit, is there any reason to think I might get a bit more clean
volume by swapping one of them into the Cube? If so, which one would be
the logical choice? I seem to remember reading about higher power
speaers
being less efficient(?) and the Roland is rated of course at 60W. I also
have a JBL K120, and one of those big old beautiful EVMs, But I doubt the
EV's Frame would fit.
Any advice is greatly appreciated, thanks.
here's the thing about replacing that cube speaker
1. the speaker inside the cube 60 is 12 inch and 8 ohms
2. However, the chinese made celestion has a shallow basket profile
and many other 12 inch speakers will not fit into the cube because
the basket will hit the chassis (i think it's a transformer hanging
down)
3. You will also need to have some extra speaker wire and 2 normal speaker
spade connectors (unless you want to directly solder the wire onto the
replacement speaker lugs).
4. After you unscrew the Cube's outside grill you can then unscrew the
front mounted speaker. But there is hardly enough wire to pull out
the speaker. Be careful! The wires going into the amp do NOT both
have normal speaker spade connectors AND it is a 3 wire connection.
That's right - 3 wires - + and - and an extra 'ground' wire that
you'll have to solder onto the replacement speaker basket (not onto
the terminals). You also have to deal with the wires where they
connect
to the speaker have this shrinkwrap on them and they are a pain to get
off.
5. With the extra speaker wire (easy to get at any Radio Shack) simply
strip away both ends and you can then 'extend' the wire length although
leave the connectors at the amp end alone. Just extend the length from
the end where the speaker wires connect to the speaker. Now you'll have
enough wire to install the new speaker and it can sit out of the amp
a little and make it easier.
6. You can also glue down any loose 'foam' inside the cab if it is
falling off (they use damping fiber/foam inside the cab)
The really important thing though is that many other 12 inch speakers
will not fit if the speaker basket doesn't have a steep angle down to
the magnet (if it has a chunky basket profile like many heavy magnet
speakers do... Eminence Swamp Thang or Celestion G12H30.. etc..)
then it is either simply will not fit or it is going to be an extremely
tight squeeze. And there is no room to move the chassis parts in the
way.
So before you do anything - first take out the original Cube speaker
and have agood look at the basket shape - the replacement will have
to nearly match it exactly in order to fit in there. You should also
measure the depth of the speaker from outside edge to end of magnet
because many other 12 inch speakers are too deep to fit in there.
That's the pain about Cubes (it is not easy to fit in replacement
speakers and the ones you want to replace it with seem always not to fit)
Other than that the Cubes sound pretty good with the stock OEM speaker.
ok well good luck!
Be careful when you tighten the bolts. If you make them too tight, you will
warp the basket and your speaker will be ruined.
.
- References:
- Switching speakers
- From: Michael L Kankiewicz
- Re: Switching speakers
- From: Squier
- Switching speakers
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