Ghia tube question

wolfie New Member Posts: 28	Ghia tube question Jan 17, 2015 20:38:50 GMT -7 via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by wolfie on Jan 17, 2015 20:38:50 GMT -7 On my 2012 ghia head the chart calls for a 5751 in v2. I just got a 2014 1x10 ghia combo that the chart calls for a 12ax7 in the v2. Anyone know why? I thought both would use the same tubes.

simpleton Z-Natic Happy Posts: 3,983	Ghia tube question Jan 17, 2015 21:58:13 GMT -7 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by simpleton on Jan 17, 2015 21:58:13 GMT -7 I have the same question BUT my 2009 said 5751 and the 25th aniver. says 12ax7 .... hmmmmmmmm?

Luke Senior Member Posts: 256	Ghia tube question Jan 17, 2015 22:32:01 GMT -7 via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Luke on Jan 17, 2015 22:32:01 GMT -7 Interesting. I wonder when V2 changed. My 2011 model calls for 5751 in V2.

simpleton Z-Natic Happy Posts: 3,983	Ghia tube question Jan 17, 2015 22:47:10 GMT -7 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by simpleton on Jan 17, 2015 22:47:10 GMT -7 My Mini had a 5751 in it when I got it but it did have a prior owner so not sure how they shipped.

Jaguarguy (Mike) Made-Man Metro-Detroit, Michigan Posts: 12,927 Member is Online	Ghia tube question Jan 17, 2015 23:14:05 GMT -7 pcns likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Jaguarguy (Mike) on Jan 17, 2015 23:14:05 GMT -7 The 5751 will have less gain, be smoother and have more chime than the 12AX7.
	A "couple" Zs

Funk#49 Full Member Posts: 189	Ghia tube question Jan 18, 2015 0:46:55 GMT -7 via Tapatalk Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Funk#49 on Jan 18, 2015 0:46:55 GMT -7 My 1999 Ghia calls for a 5751.

bigsbybender
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Posts: 131

Ghia tube question Jan 18, 2015 5:02:49 GMT -7 Maddog likes this

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Post by bigsbybender on Jan 18, 2015 5:02:49 GMT -7

I read somewhere in an interview with the Doc that the older Ghias used a 5751. Then, the word got out and older supplies started drying up, forcing him to switch to the 12AX7. There are still enough 5751's for you and me, but an amp company needs a reliable supply of parts. Please correct me if I'm wrong.

Btw, the Ghia sounds great with either tube.

Z28
Carmen Ghia
Maz Jr Studio combo
EZG-50

Mark (Basement Enthusiast)
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Metro Detroit, MI

Posts: 4,343

Ghia tube question Jan 18, 2015 5:56:34 GMT -7

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Post by Mark (Basement Enthusiast) on Jan 18, 2015 5:56:34 GMT -7

Jan 18, 2015 5:02:49 GMT -7 bigsbybender said:

I read somewhere in an interview with the Doc that the older Ghias used a 5751. Then, the word got out and older supplies started drying up, forcing him to switch to the 12AX7. There are still enough 5751's for you and me, but an amp company needs a reliable supply of parts. Please correct me if I'm wrong.

Btw, the Ghia sounds great with either tube.

I believe this is the correct reasoning, as well. My Ghia (built in '13, I think) arrived new with a 12AX7 in V2. I changed that out for an NOS 5751 and I like it a lot more; the amp feels & sound just a bit less gainy and congested. [BTW, anybody with a Z-28 might wanna check their V2 spot, as well... the 5751 was spec'ed there, too.]

The trick here is that you've gotta use NOS 5751 tubes--the new ones just don't cut it (they're not built to spec), and that's why Doc can't source 'em in large numbers. Know & trust your tube vendors, folks...

Currently own or have owned:
M12, Z-Plus, Rx JS, Z Wreck Jr, Carmen Ghia, MAZ 18 Jr NR, Monza, Z-28, Route 66, Therapy, DB4, Remedy, Prescription, EZG-50, SRZ-65 LE, & Delta 88
Z-Drive | Brake Lite SA & Air Brake

doctorice
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Ghia tube question Jan 18, 2015 7:20:46 GMT -7

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Post by doctorice on Jan 18, 2015 7:20:46 GMT -7

I also use a NOS 5751 in my Ghia's V2 socket. Some folks like to put that tube in V1 and use a 12AX7 in V2. Conclusion: buy a 5751 and try it out in both positions. Use 2 x 12AX7 for more gain. That raises the question: Did Dr Z alter the circuit a bit to compensate for a new base case of dual 12AX7s in the Ghia?

Mike

Gear piled high. Talent? Must be hidden in there somewhere.

THIS IS WHERE YOU FIND
Amp Settings: michaelgiliberto.com/Page_2.html or
docs.google.com/spreadsheets/d/12PqamkxVsRiTVnw3FJfHio4HyPObyazhN1UQnnP1490/edit?usp=sharing

wolfie
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Posts: 28

Ghia tube question Jan 18, 2015 10:38:05 GMT -7 via mobile

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Post by wolfie on Jan 18, 2015 10:38:05 GMT -7

I like the way my head sounds with a 5751 in it. The combo has a more edgy gainy sound but I just figured that might be because of the Red Fang and the fact its a 10 inch speaker. I usually run my head though a Z 1x12 with a V 30.

wolfie
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Posts: 28

Ghia tube question Jan 24, 2015 12:05:42 GMT -7 via mobile heynewguy (Ol’ Bill), jimiata, and 1 more like this

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Post by wolfie on Jan 24, 2015 12:05:42 GMT -7

I've had a few more days playing my new CG with the Red Fang speaker. All I can say is wow! Its got to be the most toneful amp I have owned. Plus I love its size. I have had a lot of amps and been playing 45 years. I'm 58 now so I needed something smaller with lots of tone and enough power to gig with. This amp is perfect!!