Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: gar13 on March 20, 2012, 09:22:12 am

Title: Ampeg V4 Tube replacement
Post by: gar13 on March 20, 2012, 09:22:12 am

Hi All,

I'm getting ready to sell a 70's Ampeg V4.  I only have two of the orignal 7027s in it (I think that's how I got it). I have a quad of Sovtek 6L6WXT+, do you think they can handle the voltages? I see online that people have had success with other 6L6 types.

Thanks,
Dave

Title: Re: Ampeg V4 Tube replacement
Post by: jjasilli on March 20, 2012, 10:43:31 am

Quote from: gar13 on March 20, 2012, 09:22:12 am

Hi All,

I'm getting ready to sell a 70's Ampeg V4.  I only have two of the orignal 7027s in it (I think that's how I got it). I have a quad of Sovtek 6L6WXT+, do you think they can handle the voltages? I see online that people have had success with other 6L6 types.

Thanks,
Dave

My V4 came with 4X Groove Tube 6L6's and it worked fine.  (I since replaced them with 7027A's which improved tone IMHO.  Haven't tried 6550's which many people swear by.)

Title: Re: Ampeg V4 Tube replacement
Post by: birt on March 20, 2012, 11:25:07 am

the amp has 545V on the plates. look at datasheets of different tubes and you will find the maximum plate voltage they can handle. if you take it easy on the bias they can handle a bit more. that's why most 6L6 types survive but some don't. checkt the plate voltage, check the bias, check the datasheet of the tubes.

http://www.newsensor.com/pdf/sovtek/6l6wxt-sovtek.pdf (http://www.newsensor.com/pdf/sovtek/6l6wxt-sovtek.pdf)