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Old 20th November 2007, 03:56 PM   #1
het_yak is offline het_yak  France
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Default Coral 8A-40

Hi All,

I have purchased two pairs of Coral 8A-40 and would like to know which of the "spawn of frugel" would bring out the best in them. If there are other designs to consider I would be glad to learn them.

Thanks in advance

Leon
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Old 20th November 2007, 04:05 PM   #2
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Location: UK
Got any T/S parameters? I've never done anything for the Corals mainly because AFAIK, they never gave any measurements, beyond the old, pre T/S Qo, & magnet gauss information.
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Old 21st November 2007, 10:20 AM   #3
het_yak is offline het_yak  France
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Hi scottmoose,

I am trying to find the TSP for a week now and I can not even find the 8A-40 among all corals mentioned on the Web except at diyparadise. Yeo told me to use the data of the Flat 6 and I have only been successful in finding the TSP for the flat 6II.

Coral Flat 6 II :
Re=7,5 Ohm
30Watt
SPL=92dB
Fres=67Hz
Qms=6,9
Qes0,54
Qts=0,50
Vas=37,6 Liter

I think I will need to find someone who can measure the tsp of the 8A-40 to be accurate. I was hoping someone had already done just that.

Friendly regards

Leon
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Old 21st November 2007, 03:38 PM   #4
paba is offline paba  Canada
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Hey,

two options to measure your drivers... if you have a PC.

99$
http://www.partsexpress.com/pe/showd...number=390-804

or for more money, but more complete, the woofer tester 2
www.woofertester.com/products.htm

cheers
/Paba
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Old 21st November 2007, 05:03 PM   #5
het_yak is offline het_yak  France
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Hi Paba,

Thanks for the links. That is already a lot cheaper than sending them away for measurement. I had a quote of 39 euro per speaker to measure the TSP.

Thanks again.

Leon
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Old 21st November 2007, 05:33 PM   #6
paba is offline paba  Canada
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yeah and then YOU can start charging for TSP measurements

don't forget shipping and possible customs fees.

You may have more speaker projects in the future too.

cheers
/Paba
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Old 22nd November 2007, 07:09 AM   #7
het_yak is offline het_yak  France
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Good morning Scott moose, Paba,

Thanks, for your responses, I will establish the T/S parameters first and repost my question with a bit more detail.

Friendly regards

Leon
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Old 11th January 2008, 11:22 AM   #8
alexg is offline alexg  Philippines
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Hi Leon,

Were you able to get the TS of the Corals?

I have a pair of those, Coral 8A-40 and am interested with the TS parameters if you have them.

What cabinets did you build for them?

Regards,

Alex
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Old 11th January 2008, 12:03 PM   #9
olg28 is offline olg28  France
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Join Date: Nov 2005
Hello het_yak !

Do you have a speaker workshop ( like "La maison du haut parleur" or "HP système" in PAris ) near you ?
Otherwise with "TGV" you can go to Paris because "LaPoste"

Olivier
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Old 11th January 2008, 01:04 PM   #10
het_yak is offline het_yak  France
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Hi Alex,

Sorry for the late reply, I have not found or measured the T/S parameters yet. seems to be less simple as it sounds. I am planning on building a cabinet as proposed by coral for the flat 6beta. According to a few people that should come close. I can not find a cabinet proposal for the 8a-40. Coral does not even mention these chassis.

Bonjour Olivier,

Helas, I am located in the "Gard" and going up to paris to have some chassis measured will have to wait until the occasion arises. I will try to find an equivalent store in nimes, montpellier or avignon although I doubt there is any.

Friendly regards

Leon
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