Repair Blog: Laney GH100L Modification with before/after sound clips
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- Опубліковано 4 бер 2021
- This Laney GH100L made its way on the bench because it had a hum that recently developed. Since the amp was going to be opened up I decided it was time to do a recap and perform some modifications to get a little more versatility out of the amp.
The main focus of the modification was to be able to remove the "cold clipping" stage and still utilize the existing additional "Drive" stage to get more of a modified Superlead sound.
The modification allows different configurations of the preamp without having to drill any holes in the faceplate and all modifications can be reversed. I also didn't want to veer too far off the original sound as these amps sound pretty good in their stock form. - Навчання та стиль
I like at the end of the video where you said made this amp more flexible, one could even say you made this amp more Plexible. Cool video. It's a good time watching you repair and or mod these amps, ect. then hearing the results. thumbs up.
I sold my one of these, but I dig the mods you did, love your work
I think I like the stock: drive - off sound best.
Killer video Bro I own 2 of these heads a Gh100l and the GH50l these are very underrated heads after seeing your mods I’d love to have one of mine modded .
Hell yeaaah...!
A little "Death or Glory"!
Bro... I haven't listened to that since damn-near high-school in the damn '90's!
That's an INSTANT subscribe from me!
That cold clipping stage removal mod sounds awesome. Really plexi ish. It's something I had considered doing years ago . I love this era of Laney's. A bit too much maybe, I've got 2 gh100l's and 2 vh100r's and have gigged with them for years. Thanks, I'm inspired to do the mod.
I play with moderately high gain at times but I still favor having the cold clipper stage out of the circuit. It sounds more like a cascaded JMP that way. Glad you dig the video!
Thanks. I am thinking about going from a Butcher to this amp to get a little more gain. I’ll try similar mods you got this sounding awesome!
Great mod. Great demo of the mods.
Sounds sick man.
Fuck yeah, I see why Pusty has kept you alive for so long......you’re a handy dude!
I had a 50 watter of this one for several years and to me there was nothing Marshally about it. I loved that amp and I miss it. The only reason I sold it was because I needed something I could do clean & dirty, but the way this was designed it wasn't really feasible in a live setting without a drive pedal, and I didnt have the financials to have more than one amp at the time.
Mad skills
Very good video
I have the newer gh100r and I love mine
Really cool
Great, thanks!!!
I've always wanted one of these, if only because I like JCM 800 and my initials are GH
Ha! My first tube amp in 98 was a GH50 and also my initials as well! I loved that amp and still miss it! It was stolen and never recovered. Bastard thieves!
DEATH OR GLORY!!!
HELL YEAH!
Midnight too 🔥
Thats my old amp I think! Love those things!
At some point in doing a video with that Marshall bass cab you sold me. I got it sounding really good but damn is it heavy!!!
My favourite amp, really interesting video to see someone playing around with it on the bench. I have no idea how any of this stuff works so really cool to see how much variation can be done by someone who knows what they're doing. That strat sounds great too, were you running this through a mic'd cab or an IR?
It was either an SM57 or an Audix i5 in front of a Marshall cab with G12-65's if I recall correctly.
Awesome! You are one of my favorite guitarists. Where did you learn so much about amps?
I used to frequent the MarshallForums and was a fly on the wall over at PlexiPalace. Always tried to work on my own gear and did a lot of studying... I'm always studying. In anything you do you can never stop learning.
Always liked those old Laney's. I need to holler at you about this 2210. Bitch needs some serious TLC.
Wow that looks like a repairable amp compared to many new amps. I wonder if they are still built like that
Do all of these Laney GH 100 used the same model of tubes I got one for a crazy low price but there are no tubes and it’s missing the power sockets so I think yours sounds amazing
could you point me to some sort of schem where the cold clipping stage has been removed / bypassable? i really liked the plexi/superlead tone you demoed. i play 99% clean so it might be beneficial to skip the clipping stage alltogether. many thanks, great insights here
Hey, I know this video is a few years old, but a question: Instead of entirely bypassing the cold clipper, could you have achieved a similar result but switching in a smaller cathode resistor to make that stage more transparent?
I think for the modern sound I enjoy, the Ironheart wins out. Great classic sounding amp though.
I had a VH100 (same drive channel) but it was faulty and I didnt have the money to fix it, so I sold it off. Now owning a modern GH50R which is a good amp, but I feel like the old GH50L, 100L or the VH100 just sound a little better, more ballsy and raw
I just ordered "The Disc with No Name". How about some acoustic guitar or acoustic amp videos from Purgasound?
Did you ever address or figure out how to tame the buzzing or hum of this Amp?
I have a Marshall JCM900 SL-X 2500 with 5881's, and a Laney GH100TI with EL34's (basically the same as the GH100L), and they don't sound the same at ALL. Might be the power amp tho
HELL YA
Where to put the positive, and negative? Please!!!
Hi, it's possible to use this amp with only 2 power tubes?
Yes it is. But I would definitely check the bias. Your 8ohm speaker jack becomes a 16ohm speaker jack after pulling a couple of tubes.
*tuner in the corner* "bro what tf are you tuning!!!"
my friend hass 50w versio of this. that model drive not work. idea how fic that?
Not sure without looking at it. Try swapping the first preamp tube and see if anything changes.
How do we get ahold of you for repairs?
drop me a line at purgasoundamps@gmail.com
How does it compare to a Jcm800?
I wouldn't say they are far off in stock form but after the modifications its just like an 800 with the extra stage disengaged.
If you turn off the resonance, then it's a 100K NFB just like the Marshalls, no need to mod it.
I modded it because I wanted the effect to be more subtle. The bass boost in the power section is quite a lot in stock form. I like a resonance control, more so in the form of a potentiometer but a static boost is good now that it is tamed.
The AOL Pro Lead is more like a super JCM 800
The GH100L is more like a Super JCM 900
When I traded some stuff for my GH50L, it did not work and needed a transformer, so I got the GH50L for about $300 including labor.
I also have a Laney VC50 212 and a Marshall JCM 900 2500 50 watt
I love Laney Amp and once had a 50 AOL ProTube Lead which is a great friggin amp
and I've had several Marshalls over the years and Fenders and Sunn, Crate Blue VOODOO and a few Peaveys
Sunn Model T would have ate my 100 Super Lead. Both were awesome.
that sounds great
This mod would sound good for a new head, skip the repair.