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I am watching the material on the JT2 WEB page get more complete day by day :-) Here are a few questions to get me ready to order when the kit goes online. 1. What type of transformer is required for a balanced kit? 2. Will the Buffalo volumite work or do we need a different firmware? 3. I assume the JT goes after the IVY. For a Buffalo/IVY combination configured for 4V RMS outptut, will the standard resistor set provide a good range of volume regulation? Is it the same of resistors for 2V RMS and 4V RMS outputs? I am a little sensitive about the volume range since the Lavry DA10 I am currently using does not have a useful range at the low volume end. Cheers Thomas Edited by user Saturday, February 14, 2009 12:20:27 AM(UTC)
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Rank: Member
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Just saw the JT went live and I put in my order. Any chance of looking at the questions in my post. Cheers Thomas Edited by user Tuesday, February 17, 2009 10:27:42 AM(UTC)
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1. Anything 7V and over, 10VA and up. You only need one secondary direct into the relay driver board.
2. The same Volumite will work, but you will need different firmware. A complete Volumite comes with the kit.
3. It should work fine.
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Excellent, thank you Brian. Would you recommend a seperate transformer or could I connect the relay board to the secondary of the transformer driving the digital section of the Buffalo without any loss in measurable performance? I happen to have build the Buffalo with a 25VA transformer if that makes a difference.
If you recommend a seperate transformer it probably makes sense to add your 9V model to my order. Please let me know and I will send you the payment.
Cheers
Thomas
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I would use a transformer separate from the Buffalo digital supply.
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I assume I simply daisy chain the relay boards on the control cable? Basically press two connectors onto the cable?
For the balanced audio signal is it better to run 2 ground lines from the Ivy or should I connect the grounds between the boards?
Cheers
Thomas
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For balanced use there is a jumper spot on the relay board. Use that.
Yes, for multiple relay boards you just use multiple IDC connectors on the same ribbon.
Cheers!
Russ
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Rank: Advanced Member
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I read somewhere that you are considering to offer a "deluxe" version with better resistors. I just ordered a balanced JT II a few day ago and I was wondering is you should already have these resistors in stock and for sale?
Thanks!
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I decided against this option, as it would be too expensive to stock. The only difference would be 0.1% resistors instead of 1%, which is pretty much overkill.
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Having just got a couple of boards, I was trying to locate a cross-reference list for the resistors (part no to size).
Perhaps it is on the 'Detailed Excel Spreadsheet Version' link which is not currently working or perhaps I have missed the obvious (as usual) ?
TIA
Mike
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MikeInUK wrote:Having just got a couple of boards, I was trying to locate a cross-reference list for the resistors (part no to size).
Perhaps it is on the 'Detailed Excel Spreadsheet Version' link which is not currently working or perhaps I have missed the obvious (as usual) ?
TIA
Mike I just uploaded new parts lists. They are available through the Joshua Tree page.
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