Page 1 of 5
Boss - CE-1 Chorus Ensemble [schematic]
Posted: 08 Oct 2008, 21:24
by modman
Even
the box by itself is absolutely stunning.
Here and
here are some gut shots.
more pics for free (not at $750
)
enjoy!
all pics archived
Re: Roland - CE-1 Chorus Ensemble
Posted: 13 Oct 2008, 06:09
by blanik
i think i used to own this unit (the one being sold) for more than 10 years, i never used the chorus, i used it for tremolo and sold it for 250$CAN 6 years ago in Montreal... i'll have to check my old gear pics but the scratches on it seem pretty consistent with what i remember...
Re: Roland - CE-1 Chorus Ensemble
Posted: 14 Oct 2008, 10:57
by pz
I've got one on my table now. Unfortunately, i've just finished modding it for better performance with guitar and modern pickup signal levels, so it is no longer in "true vintage" condition. But if you need some additional photos, details i can provide them.
Re: Roland - CE-1 Chorus Ensemble
Posted: 14 Oct 2008, 12:11
by Rocket Roll
That would be very educational, thanks in advance!
E.g. what about that transformer?
Re: Roland - CE-1 Chorus Ensemble
Posted: 14 Oct 2008, 13:54
by pz
The power transformer has 2x18.5V AC secondaries (loaded), as it is written on the schematic. The overall measured differences in the voltages against the values on the schematic were about +/- 0.7V.
Here's some photos:
Re: Roland - CE-1 Chorus Ensemble
Posted: 14 Oct 2008, 13:56
by pz
and more...
Re: Roland - CE-1 Chorus Ensemble
Posted: 15 Oct 2008, 09:44
by borislavgajic
Nice ...thanks!!!
...but trace side is missing....so could you do it please?
boris
Re: Roland - CE-1 Chorus Ensemble
Posted: 15 Oct 2008, 13:53
by pz
Tracks side, unfortunately already modded...
Re: Roland - CE-1 Chorus Ensemble
Posted: 15 Oct 2008, 15:31
by analogguru
ThereĀ“s a bad solder joint (in the top-middle) of the 100k near the MN3002.
analogguru
Re: Roland - CE-1 Chorus Ensemble
Posted: 15 Oct 2008, 16:58
by pz
It isn't bad, it's simply no longer used.
Re: Roland - CE-1 Chorus Ensemble
Posted: 15 Oct 2008, 18:04
by analogguru
aha....
Re: Roland - CE-1 Chorus Ensemble
Posted: 16 Oct 2008, 00:37
by Fuzzer
It is wired to the small board now, right?
Re: Roland - CE-1 Chorus Ensemble
Posted: 16 Oct 2008, 07:18
by pz
Yes, i've used an external trimpot to set the BBD bias voltage.
Re: Roland - CE-1 Chorus Ensemble
Posted: 19 Oct 2008, 14:57
by daz
i've got a copy of the schematic and board layout guide roland gave me, I'll see if I can scan it sometime..
Re: Roland - CE-1 Chorus Ensemble
Posted: 19 Oct 2008, 17:42
by analogguru
BOSS - CE-1
Posted: 03 Oct 2009, 11:46
by sinner
I can't believe, there is no tread about this classic on the board
Perhaps my searching is wrong
Anyway, a have little thing attached to the post, but resolution of this is discussable, maybe some of you have something better?
Cheers
Pawel
Re: BOSS CE-1
Posted: 04 Oct 2009, 19:34
by JJ Gabor
I am interested in a project for this one.
Here are a couple of factory schematics and images i found with google. Got no way of verifying if they are correct.
And a pic of the board
Re: BOSS CE-1
Posted: 04 Oct 2009, 20:37
by pf_fan
Two more from me
Re: BOSS CE-1
Posted: 04 Oct 2009, 23:18
by JJ Gabor
Trackside!
Score
Re: BOSS CE-1
Posted: 05 Oct 2009, 09:49
by borislavgajic
pf_fan...this is music for my eyes!
many thanks
boris