Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: newguitarsmell on March 24, 2019, 06:15:04 pm

Title: Can I use 5881 tubes in this amp instead of el34?
Post by: newguitarsmell on March 24, 2019, 06:15:04 pm

https://music-electronics-forum.com/attachment.php?attachmentid=45018&d=1506148051

If I have to mod the filters, what do you guys recommend?

Title: Re: Can I use 5881 tubes in this amp instead of el34?
Post by: shooter on March 24, 2019, 07:47:58 pm

https://frank.pocnet.net/sheets/049/5/5881.pdf

https://frank.pocnet.net/sheets/129/e/EL34.pdf

look over the datasheets, what stands out that bothers ya, me, I wouldn't even unscrew the chassis if it's workin  :icon_biggrin:

Title: Re: Can I use 5881 tubes in this amp instead of el34?
Post by: sluckey on March 24, 2019, 08:10:05 pm

Quote from: newguitarsmell on March 24, 2019, 06:15:04 pm

https://music-electronics-forum.com/attachment.php?attachmentid=45018&d=1506148051

If I have to mod the filters, what do you guys recommend?

No need for mods. Just plug 'em in and play it like you stole it.

Title: Re: Can I use 5881 tubes in this amp instead of el34?
Post by: VMS on March 25, 2019, 02:49:10 am

check bias first then play it like you stole it