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Old 28th December 2015, 12:01 PM   #1
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Default Wanted - Schematic for Jamo concert 7 (old version)

Hi just wondering if anyone has the schematic for the Jamo concert 7 ?
The 1989 version with two 8" internal bass drivers.

Thanks
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Old 23rd December 2016, 05:05 PM   #2
q139 is offline q139  United States
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Not sure if "89 verison but if someone wants, can make it to regular schematic.
Idk if the 4.7uF mcap is correct.
At this age bipolar could be easily out of spec.
Click the image to open in full size.

Last edited by q139; 23rd December 2016 at 05:09 PM.
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Old 18th January 2017, 06:28 PM   #3
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Default Please help me out

Hi I just stumbled over this thread

and yes 4,7F is correct as far as I can tell by some of my pictures.
I am actually just looking for a crossover schematic. Please help me
The Tweeters come from SEAS: H400 25 TAC/G and can be replaced since some newer generations are still available on the market.

Thank you
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Old 22nd January 2017, 06:42 PM   #4
q139 is offline q139  United States
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Quote:
Originally Posted by Akra AMP View Post
Hi I just stumbled over this thread

and yes 4,7F is correct as far as I can tell by some of my pictures.
I am actually just looking for a crossover schematic. Please help me
The Tweeters come from SEAS: H400 25 TAC/G and can be replaced since some newer generations are still available on the market.

Thank you
Hi ,

Have no schematic for it but if you wish can draw from image to schematic as there is rear and front image mirrored.
I lately replaced all caps in filter with new mcap as midranges were sounding slightly different but actually only bipolar caps were out of spec badly. Those 4x 72uF bipolars probably were not made to last 25+ years. Other caps poly type were all in spec.

I have tweeters replaced using H0883-06 27TAFC/G H0883-06 27TAFC/G
Not sure if it correct replacement if crossover not altered but if H400 25 TAC/G is original model then can compare specs.

Tweeter can find some replacement and midrange looks visually same as concert 5 but if woofers fail it may be compelx to replace.

Last edited by q139; 22nd January 2017 at 07:01 PM.
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Old 23rd January 2017, 07:13 PM   #5
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The original Tweeters are from SEAS:
H0400 25TAC/G
http://www.seas.no/images/stories/vi...400_25tacg.pdf

the right replacement would have been the
H0417 25TAC/GW
http://www.seas.no/images/stories/vi...17_25tacgw.pdf

I was thinking about yours aswell for my next tweeters >> those are the current gen. replacements for the H0400 the specs fit except the powerrating which seems now better for the Concert VII
H0883-06 27TAF/G
http://www.seas.no/images/stories/pr..._datasheet.pdf

As far as I know the Midranged one (W-20482) is the same on the Concert V
Woofers(W-22168) are wired in parallel but one woofer is obviously connected with interchanged + -
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Old 14th February 2017, 11:08 AM   #6
q139 is offline q139  United States
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Click the image to open in full size.
Made schematic from the board image , it may contain some mistakes.
Also no correct values for inductors.
Click the image to open in full size.

Last edited by q139; 14th February 2017 at 11:13 AM.
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