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Topic: Mosvalve 500 ? |
Roger Francis
From:
kokomo,Indiana, USA
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Posted 13 Jun 2007 12:10 pm |
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| I have a 500 i purchased and on the back it says 4ohm minumum and 8ohm for best performance, i have BW 1203-4 speakers, will it be ok to use the 4ohm as a permant setup or should i get the 8 ohm baskets? |
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Steve Matlock
From:
Bentonville, AR USA
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Posted 13 Jun 2007 1:45 pm
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Roger,
I've used a MosValve 500 into 4 ohm Black Widows for a long time. I don't think you'll have any problem. Just make sure your Mosvalve can breathe for cooling purposes.
Steve |
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Roger Francis
From:
kokomo,Indiana, USA
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Posted 13 Jun 2007 1:50 pm
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| Thanks Steve, i have it in a 3space rack all by itself so it should get good air. |
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David Doggett
From:
Bawl'mer, MD (formerly of MS, Nawluns, Gnashville, Knocksville, Lost Angeles, Bahsten. and Philly)
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Posted 13 Jun 2007 9:16 pm
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| If you run two 4 ohm speakers in series, that will be 8 ohms, which is what is recommended. Two 4 ohm speakers in parallel will be 2 ohms, which is not recommended. |
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Jack Stoner
From:
Kansas City, MO
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Posted 15 Jun 2007 8:58 am
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| I used 8 ohm BW speakers with mine, because of the recommendation on the back of the amp. I never had the gain control over 5 the whole time I had the amp. |
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Jerry Overstreet
From:
Louisville Ky
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Posted 15 Jun 2007 12:09 pm
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Hi Roger, I've played a Mosvalve rig since the early 90's when Ronnie Neighbors first introduced to the steel community at the St. Louis convention.
I've worked it pretty hard with a variety of music styles using steel, guitar and slide without any problems whatsover. I have always used Peavey 1501, 2 and 1203 4 ohm speakers without a whimper from the MosValve 500. The suggestion regarding ventilation is a good one, even though the unit has an internal cooling fan. Enjoy! |
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Roger Francis
From:
kokomo,Indiana, USA
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Posted 16 Jun 2007 12:23 pm
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Thanks guys for your help and it's great to know that there is still some of these being used. After i posted this i did some research and what little info i found was helpfull too. The one i have says Mosvalve 500 and to the right of that it says Tube Works 942, so from what i've read, there must an older version and a newer vrsion of the same amp. Mine is made in the US and the SN starts out 02- and i asked Genz Benz if they could tell the year by the SN and they hade no info on it, but they said at 4ohm it was 250w per chanel (A&B)- stereo,and it would be fine to use 4ohm.
The manual i found says 500W at 4ohm, 250W per chanel, both chanels used. So hopefully this might shed some light for any body using these, and again thanks for your help. |
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Jack Stoner
From:
Kansas City, MO
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Posted 16 Jun 2007 1:08 pm
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| That is the old, original, model. The later model, made by Genz-Benz had a four digit model number (don't remember what it was). Basically the same amp, just a black front panel and the controls relocated on the front panel. |
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Roger Francis
From:
kokomo,Indiana, USA
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Posted 16 Jun 2007 2:00 pm
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Thanks Jack.
Now i'm just waiting for my cabinets from Marrs so i can install the speakers and try it out. |
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