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Topic: correct speaker wiring hookups for NV- 400 head! |
Jim Palmer
From:
fredericton, nb
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Posted 4 Jan 2002 5:28 pm |
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| Hi everyone, I have recently built a seperate head for my Nashville 400 and I would like to know how to wire up two output Jacks so I can use two seperate speaker cabinets. Thanks in advance.Jim |
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Bill R. Baker
From:
Clinton, MS USA
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Posted 4 Jan 2002 5:46 pm
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Jim, I also have a separate head for my Nashville 400; however, I can only use one
speaker. I will be watching for a response
to your post. Thanks |
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Jim Palmer
From:
fredericton, nb
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Posted 4 Jan 2002 6:33 pm
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| Howdy Bill.,Did your amp seem to sound better and quieter after the conversion? Mine seemed to. I had a little problem with the reverb being noisey but all I had to do was swing the tank end for end to keep the cables away from the transformer...I would like to thank all our Forum members for all the help they give us from time to time!!!!!THANKS GUYS .Jim |
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Sam White R.I.P.
From:
Coventry, RI 02816
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Posted 4 Jan 2002 7:41 pm
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Hi Jim I'll be watching your post to as I converted my nashville 400 head a good year ago.I asked if I could put a additional jack beside the one I have on the back of the head case to use a second speaker.I think the gentalman from Peavy told me I would have to use a 4 ohms speaker and some thing about a 8 ohms speaker would take to much draw or some thing I'm not sure.I just don't want to damage any thing.What I have been doing is I use a Pro-Fex II and I have my nashville 400 in one out put and my Peavy bandit 75 amp comming out of the other out put on my Pro-Fex II. I have a great sound but would like lighter Amps.
Sam White [This message was edited by Samuel E. White on 04 January 2002 at 07:46 PM.] |
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Jack Stoner
From:
Kansas City, MO
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Posted 5 Jan 2002 3:50 am
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If you add another speaker (parallel) you have to be careful that you don't get too low and put too much load on the amp (too much current throught the output transistors and blow them).
The stock speaker in the Nashville is a 4 ohm speaker. If you had another 4 ohm speaker in parallel it would present a 2 ohm load, which may be too low for the amp. If you had an 8 ohm speaker in parallel with the 4 ohm it would present a 2.8 ohm load. (the formula is R1XR2 divided by R1+R2).
Mike Brown can answer what the amp will safely handle, but there is no second speaker jack on the amp and it was probably made that way for a reason. |
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Craig A Davidson
From:
Wisconsin Rapids, Wisconsin USA
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Posted 5 Jan 2002 7:29 am
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Jack is right. Mike Brown told me sometime back on here that a Nashville 400 is not set up for two-four ohm speakers. He recommended just staying with the 4ohm Widow.
------------------
1985 Emmons push-pull, Session 500, Nashville400, 65 re-issue Fender Twin, Fender Tele
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Bill R. Baker
From:
Clinton, MS USA
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Posted 5 Jan 2002 12:20 pm
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Jim, you asked about the sound of my amp
after conversion to a separate head. I
cannot really tell any difference. I think
we have the answer to your question regarding
adding another speaker. Best we not do that.
Maybe just get another Nashville 400. |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 7 Jan 2002 8:42 am
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The reason that the amp is set up the way that it is, is because when the Nashville 400 was designed back in 1983, 210 watts was very sufficient for steel guitar applications(and still is). However, the 400 amplfier is designed to operate safely into a minimum 4 ohm speaker load and still produce full output power. We could probably could have used an output transformer with taps that would adapt to various speaker loads, but those types of transformers do cost more, therefore driving up the end user price of the product. Apparently, in 1983 our product managers and engineers chose not to go that route.
The bottom line is that if two 4 ohm speaker loads were attached to the output of a Nashville 400, the load would then be 2 ohms which would make the amp run hotter and the wattage would be somewhat less than full power.
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