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Anyone have a Fishman Loudbox schematic to share?
Anyone have a Fishman Loudbox schematic to share?
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Old 4th December 2016, 12:11 AM   #1
jtoff7273 is offline jtoff7273
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Join Date: Dec 2015
Default Anyone have a Fishman Loudbox schematic to share?

I have one of these and the reverb isn't working. I've ruled out the tank and connectors. I though it might be worth a shot to see if anybody has one that they could share with me. I've looked and haven't been able to find one. Thanks!
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Old 28th January 2019, 11:36 PM   #2
dthodoris is offline dthodoris
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Hi I have the exact same problem.Did you manage to find schematics?
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Old 29th January 2019, 09:22 PM   #3
kevinaston1 is offline kevinaston1  United Kingdom
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Default Fishman Loudbox

Here you go, hope it helps.


Kevin
Attached Files
File Type: pdf Loudbox SM.pdf (492.2 KB, 166 views)
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Old 30th January 2019, 05:27 PM   #4
IceFyre13th is offline IceFyre13th  United States
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Location: AZ, you know where the car audio companies are.
Quote:
Originally Posted by kevinaston1 View Post
Here you go, hope it helps.


Kevin

SCHEMATIC.........not......lol
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Old 30th January 2019, 06:29 PM   #5
stephen_keller is offline stephen_keller  United States
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Location: Portland, OR
There is a Loudbox schematic here: https://music-electronics-forum.com/...6&d=1504378726

This is the thread if the above link doesn't work: Loudbox mini

You may need to join the MEF to see the file.

Stph
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Old 30th January 2019, 08:58 PM   #6
kevinaston1 is offline kevinaston1  United Kingdom
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Join Date: Oct 2010
So sorry; it is a long time since I looked in my Fishman folder. This one any good?


Actually, the "joke" service manual is the one supplied to Fishman service centres, any fault and you replace the chassis.


Kevin
Attached Files
File Type: pdf Loudbox 001 SM.pdf (182.9 KB, 100 views)
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Old 3rd March 2019, 12:27 PM   #7
marmotteinoz is offline marmotteinoz
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Join Date: Apr 2011
Dear Kevinaston1
Do you happen to have the schematics for the Loudbox Artist model?
By chance any mechanical drawings?

I am trying to fix one - can't seem to find a way to open the bottom "main" enclosure which contains the speakers, power transformer etc...
THX a lot
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Old 5th March 2019, 08:41 PM   #8
kevinaston1 is offline kevinaston1  United Kingdom
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Join Date: Oct 2010
Default Fishman Loudbox Artist

All the electronics for the artist are in the metal chassis at the top, remove three screws at each side at the top, and lift the chassis out - ensure you disconnect the loudspeaker lead before lifting the chassis right out.


If you need access to the "base of the unit", gently prise off the loudspeaker grille, and remove the bass driver - but it is just air in there.

Schematic attached.


Kevin
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Old 12th March 2019, 09:16 PM   #9
marmotteinoz is offline marmotteinoz
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Join Date: Apr 2011
Thanks a lot Kevin


Sorry for the delayed response, I wasn't logged in on my phone and your post somehow didn't sow up there :/


Was able to check the bottom part now indeed.


The schematics you have attached are not for the same model though.

The Artists model has a bank of 4 voltage regulators at -14, 14, 12 and 24V
See Fishman Loudbox Artist Repair question : GuitarAmps and Fishman2 - Google Photos
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Old 22nd March 2019, 07:02 AM   #10
marmotteinoz is offline marmotteinoz
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Join Date: Apr 2011
Dear all,


I spent some time drawing this schematics for the main board. Lots of fun (first time I'm doing that!) , obviously lots of errors/incorrectness (I didn't do a proper set of hierarchical sheets ; not sure if my global labels are the proper way to do that ; R values are a bit all over the place


R1 looks weird. (see my other post). Would a burned resistor measure a higher value than its nominal? If not, why would it be one order of magnitude higher resistance than its three siblings R32 R33 and R34 ?
THX
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