6103
From: GregJ, [portal.visa.com]
Subject: Shiva Wiring Question
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Howdy.. I'm looking to use a Shiva in a seeled box setup. No big deal... But, I want it to run at 8ohms. By default I thought the Shiva runs at 4ohms, so, what do I need to do to have this thing wired to run at 8ohms? Be gentle, I'm electronicly challenged.... Thanks... Greg |
6105
From: MAG, [1cust168.tnt1.dyersville.ia.da.uu.net]
Subject: Re: Shiva Wiring Question
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Greg, The Shiva by default is two 8ohm coils. So you would only run one coil and the other coil is left open(QTS=.39) or shorted together (QTS=.7). The driver with the higher QTS will require a much larger box but will have a lower F3. Hope this helps. -MAG |
6121
From: Dan Wiggins, [ts004d05.sea-wa.concentric.net]
Subject: Re: Shiva Wiring Question
URL: Avatar Audio
|
<< Greg, The Shiva by default is two 8ohm coils. So you would only run one coil and the other coil is left open(QTS=.39) or shorted together (QTS=.7). The driver with the higher QTS will require a much larger box but will have a lower F3. Hope this helps. -MAG >> Right idea, wrong associations...:) When you run a single voice coil, it has the nominal single-coil Qes of 0.8. So, with the second coil open, you'd have a Qes of 0.8, and a Qms (unchanged) of 6.5, for a Qts of ~0.7. Now, when you short the second (unused) coil, it essentially acts as an electric brake. This will manifest itself by lowering the Qms to the Qes of a single coil: 0.8. So, you'll have a driver Qes (of the coil you're driving) of 0.8, and a Qms (of the shorted coil) of 0.8, for a combined Qts of ~0.4. One coil driven, other open, Qts = ~0.7. One coil driven, other shorted, Qts = ~0.4. Dan Wiggins President Avatar Audio |
Responses:
[6139]
6139
From: MAG, [1cust76.tnt1.dyersville.ia.da.uu.net]
Subject: Re: Shiva Wiring Question
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Oops! Sorry for the mix up Dan. Did I mention how impressed I am with your driver? Now if we could only get a high performance 10" driver.(hint,hint) -MAG |
Responses:
None
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