Search found 694 matches

by andresound
Tue Jun 27, 2023 1:43 pm
Forum: Marshall Discussion
Topic: AO-43 to Silver Jubilee
Replies: 34
Views: 25681

Re: AO-43 to Silver Jubilee

Beautiful build. Inspiring. I have an AO-43 lying around.., time to get to work. Thank you for the post
by andresound
Sat Sep 19, 2020 7:26 am
Forum: Technical Discussion
Topic: Toshiba 6GB8 hi-fi tubes
Replies: 3
Views: 1038

Re: Toshiba 6GB8 hi-fi tubes

Well the Japanese data sheet shows the pin out to be identical to a EL34, (my Japanese is not good 😏), with the exception of the suppressor grid (g3), being tied to the Cathode internally.
Due to the lack of response in this thread..., maybe I should move it to the TW thread?
by andresound
Fri Sep 18, 2020 1:09 pm
Forum: Technical Discussion
Topic: Toshiba 6GB8 hi-fi tubes
Replies: 3
Views: 1038

Toshiba 6GB8 hi-fi tubes

Hi guys. Can’t find any info in English. I have been given a pair of these tubes. They look VERY similar internally to my Fx2’s but with black plates. Google seems to suggest these are EL34 type equivalents, just “higher” grade. Before I try them in my beloved TW Express, I want to make sure. Any su...
by andresound
Fri Jun 26, 2020 5:04 am
Forum: Trainwreck Discussion
Topic: Brad Paisley Trainwreck
Replies: 3
Views: 1341

Re: Brad Paisley Trainwreck

Not sure which cabinets are used, but it looks like the Rocket has a guitar lead going down to towards the pedals and that amp is definitely on. Could be wrong.
by andresound
Fri Jun 19, 2020 8:49 am
Forum: Trainwreck Discussion
Topic: Brad Paisley Trainwreck
Replies: 3
Views: 1341

Brad Paisley Trainwreck

Has anyone seen this? https://youtu.be/f07aisGr0Mc. Notice the Rocket he is playing through
by andresound
Mon Nov 25, 2019 9:29 am
Forum: Dumble Discussion
Topic: A new 102
Replies: 78
Views: 17264

Re: A new 102

Nice work 👍
by andresound
Wed Nov 20, 2019 5:56 am
Forum: Dumble Discussion
Topic: Reprise NOS Old Dale RN65D vs NEW Dale RN65D
Replies: 192
Views: 14303

Re: Reprise NOS Old Dale RN65D vs NEW Dale RN65D

Andy Fuchs wrote

“Honestly, the differences in really old amps vs new is partially the parts, but (in my opinion) the fact they have been PLAYED and broken-in. “

I couldn’t agree more. Maybe that’s why HAD took so long to deliver to his clients... he wanted them partially broken in.
by andresound
Sun Nov 17, 2019 6:11 am
Forum: Dumble Discussion
Topic: Advice on 2nd Gen conversion to skyliner tone stack
Replies: 13
Views: 1605

Re: Advice on 2nd Gen conversion to skyliner tone stack

Here´s what I would do ( and have done on my 2nd gen amp): Lose the .02 cap on the bass pot (wiper to 10k resistor) , if it is in your amp . This way, the tone stack will be fairly close to the Skyliner, tonally. Also, the mid pot will be much more effective. I also used the Skyliner stack in my am...
by andresound
Tue Nov 12, 2019 10:07 am
Forum: Dumble Discussion
Topic: Advice on 2nd Gen conversion to skyliner tone stack
Replies: 13
Views: 1605

Re: Advice on 2nd Gen conversion to skyliner tone stack

Doable for sure, and as I understand it, several 2nd gen amps were "updated" in that way. You are looking at changing a couple of pots and resistors, and converting Deep to Mid Boost. Advisable is up to you. Skyliner has less mid scoop, shifted up in frequency. Thank you Martin. After my 102 with s...
by andresound
Mon Nov 11, 2019 2:28 pm
Forum: Dumble Discussion
Topic: Advice on 2nd Gen conversion to skyliner tone stack
Replies: 13
Views: 1605

Advice on 2nd Gen conversion to skyliner tone stack

O wise ones of the garage. Is such a conversion advisable/doable?
by andresound
Mon Nov 04, 2019 8:18 am
Forum: Trainwreck Discussion
Topic: Favourite speakers and cabs for Trainwreck amps.
Replies: 90
Views: 150169

Re: Favourite speakers and cabs for Trainwreck amps.

FWIW.. Played a gig with my Express using a Dumble style open back 1x12 loaded with a Celestion GOLD. Sounded great and received plenty compliments on tone from musicians who attended.
by andresound
Tue Sep 24, 2019 3:25 pm
Forum: Marshall Discussion
Topic: 1969 JMP refurbish
Replies: 16
Views: 4744

Re: 1969 JMP refurbish

Calling it done. Amp sounds great. Plates are 495v. Biased at 35ma. Added 1.5k grid stoppers and 1k screen resistors. Amp is very quiet 😳. Pilot light is faulty, so will try source one. Otherwise chuffed.
by andresound
Sun Sep 22, 2019 3:31 pm
Forum: Marshall Discussion
Topic: 1969 JMP refurbish
Replies: 16
Views: 4744

Re: 1969 JMP refurbish

Progress. Still to slowly fire her up and reform DALY caps. While taking pictures.... I realized I haven’t yet connected the pilot lamp 🤨. Will also change out the bias caps to 2x 10uf axial to replace the radial ones. Will looks better!
by andresound
Sun Sep 22, 2019 8:51 am
Forum: Marshall Discussion
Topic: 1969 JMP refurbish
Replies: 16
Views: 4744

Re: 1969 JMP refurbish

The Schematic you are using is very similar to mine. 2 things to watch out for : you might know this already. 1. the bias circuit turns on with the Standby switch. Not good. This means the output tubes are not biased off when you switch so output tubes red plate for a moment and cause the heater fu...
by andresound
Fri Sep 20, 2019 7:21 am
Forum: Marshall Discussion
Topic: 1969 JMP refurbish
Replies: 16
Views: 4744

Re: 1969 JMP refurbish

Whats the S# on this amp? I want to compare to my marshall. Mine is an early 50 watt m#1987. 1970 VINTAGE I think. It had the 5V leads for a GZ34 on the PWR but SS Rect. I wired it up to a Tube rect years ago because the chassi was punched for the tube socket, and it had a nice sound. I've since wi...