Lang Amps
Moderators: pompeiisneaks, Colossal
Lang Amps
Anybody know anything about these amps? I have a buddy who bought one and it doesn't seem to work right. Plus he told me some odd things about it that I can't seem to find any details around it. Their website has NOTHING on it worth a crap. Looking at the amp, it has 4 octals that he tells me came with EL34's but the amp is 50w and the output/power transformers look way too small - possibly even for 50 w. It has something like 8 12ax7's in it and gets feedback if you turn the amp up too high (like 7!) without a instrument plugged in. I can tell is feedback on the first tube as i can tap it lightly when it's close to feeding back and induce the feedback. I can feel the whole chassis vibrate when it's feeding back as well. Additionally, its very noisy and gets noisy when you turn the volume all the way DOWN. Almost like some loose solder joints or something. He tells me that the amp is designed to have the outside two tubes removed for half power with no changes in switches or impedance. Sounds kinda crazy - hoping somebody has a manual or some info on this.
			
			
									
									
						Re: Lang Amps
If there is a website, maybe there is an actual company? Maybe because you've got one in your possession they'd be willing to provide a schematic? You should ask if you can.
			
			
									
									
						Re: Lang Amps
http://langamplification.com
But nothing of value there. I have posted a message but never heard from them.
			
			
									
									
						But nothing of value there. I have posted a message but never heard from them.
Re: Lang Amps
I see   .  I guess Eddie VanHalen, Joe Bonamassa, or Carlos Santana knows where to find them. Try contacting them!
 .  I guess Eddie VanHalen, Joe Bonamassa, or Carlos Santana knows where to find them. Try contacting them!
			
			
									
									
						 .  I guess Eddie VanHalen, Joe Bonamassa, or Carlos Santana knows where to find them. Try contacting them!
 .  I guess Eddie VanHalen, Joe Bonamassa, or Carlos Santana knows where to find them. Try contacting them!Re: Lang Amps
OK tell us what is it or is not doing.  
If the only problem is the feedback. Lets break it down and fix it.
The feedback is most likely caused by a faulty preamp tube, power tube, or dead/dying capacitor.
What have you done so far to troubleshoot?
Is this amp on your bench or just a buddy has it and you want to be johnny on the spot?
Old amps often had small iron. Iron cost $
Pictures would be helpful. ( clear easy to tell detail.)
Has the amplifier been modified (that you or the owner) are aware of?
			
			
									
									If the only problem is the feedback. Lets break it down and fix it.
The feedback is most likely caused by a faulty preamp tube, power tube, or dead/dying capacitor.
What have you done so far to troubleshoot?
Is this amp on your bench or just a buddy has it and you want to be johnny on the spot?
Old amps often had small iron. Iron cost $
Pictures would be helpful. ( clear easy to tell detail.)
Has the amplifier been modified (that you or the owner) are aware of?
My Daughter Build Stone Henge
						Re: Lang Amps
Lang web site states custom transformers are used in design.
There is an email link plus a contact me page you can fill out and they can get back to you.
Most likely tubes are the problem.
Mark
			
			
									
									
						There is an email link plus a contact me page you can fill out and they can get back to you.
Most likely tubes are the problem.
Mark
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Re: Lang Amps
If it has so many tubes but nothing large on the input grids I bet I can guess where screaming is coming from. 
Now that I have one success under my belt I guess I should get into business too.

			
			
									
									Now that I have one success under my belt I guess I should get into business too.

Signatures have a 255 character limit that I could abuse, but I am not Cecil B. DeMille.
						Re: Lang Amps
The new Lang has nothing but name rights to the vintage amps.
			
			
									
									My Daughter Build Stone Henge
						Re: Lang Amps
Not sure I really want to troubleshoot this amp. It is brand new and the owner has about a dozen amps that I' m either working on or will be working on shortly (owns a touring company) and this should be under warranty. He tells me he tried another amp of theirs and was impressed then bought this one and it appears to be junk. With all the wierd stuff going on plus the tiny transformers, crappy and unresponsive website, I wanted to see if maybe I was missing something. The amp looks like chinese junk with extremely cheap components like you would find on a bugera or behringer but I am surprised that my customer would have bought it unless there was seomthing to it.
BTW - he has swapped all of the tubes to JJ's. I moved the first tube to another slot and it still feeds back way too quickly but with no manuals and no schematics, I don't have a clue if it's design or a failure in the system.
			
			
									
									
						BTW - he has swapped all of the tubes to JJ's. I moved the first tube to another slot and it still feeds back way too quickly but with no manuals and no schematics, I don't have a clue if it's design or a failure in the system.
Re: Lang Amps
IMHO the new LANG are shit.  I was under the impression it was a vintage amp.  Absolutely send it back.
			
			
									
									My Daughter Build Stone Henge
						Re: Lang Amps
Here's another page:sabredude wrote:http://langamplification.com
But nothing of value there. I have posted a message but never heard from them.
http://www.langamps.com/contact_us.html
Re: Lang Amps
This is BS and it's not an amp built by me. Post pics and have the so called owner of a Lang amp contact me through langamps.com
Dan Lang
[quote="sabredude"]Anybody know anything about these amps? I have a buddy who bought one and it doesn't seem to work right. Plus he told me some odd things about it that I can't seem to find any details around it. Their website has NOTHING on it worth a crap. Looking at the amp, it has 4 octals that he tells me came with EL34's but the amp is 50w and the output/power transformers look way too small - possibly even for 50 w. It has something like 8 12ax7's in it and gets feedback if you turn the amp up too high (like 7!) without a instrument plugged in. I can tell is feedback on the first tube as i can tap it lightly when it's close to feeding back and induce the feedback. I can feel the whole chassis vibrate when it's feeding back as well. Additionally, its very noisy and gets noisy when you turn the volume all the way DOWN. Almost like some loose solder joints or something. He tells me that the amp is designed to have the outside two tubes removed for half power with no changes in switches or impedance. Sounds kinda crazy - hoping somebody has a manual or some info on this.[/quote]
			
			
									
									
						Dan Lang
[quote="sabredude"]Anybody know anything about these amps? I have a buddy who bought one and it doesn't seem to work right. Plus he told me some odd things about it that I can't seem to find any details around it. Their website has NOTHING on it worth a crap. Looking at the amp, it has 4 octals that he tells me came with EL34's but the amp is 50w and the output/power transformers look way too small - possibly even for 50 w. It has something like 8 12ax7's in it and gets feedback if you turn the amp up too high (like 7!) without a instrument plugged in. I can tell is feedback on the first tube as i can tap it lightly when it's close to feeding back and induce the feedback. I can feel the whole chassis vibrate when it's feeding back as well. Additionally, its very noisy and gets noisy when you turn the volume all the way DOWN. Almost like some loose solder joints or something. He tells me that the amp is designed to have the outside two tubes removed for half power with no changes in switches or impedance. Sounds kinda crazy - hoping somebody has a manual or some info on this.[/quote]
- FUCHSAUDIO
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Re: Lang Amps
Thought whois.com might help, but it's a blind domain, so the ownership is secret...it does shwo it was updated May 6th 2012..!! They are apparently alive....?
			
			
									
									Proud holder of US Patent # 7336165.
						Re: Lang Amps
[quote="FUCHSAUDIO"]Thought whois.com might help, but it's a blind domain, so the ownership is secret...it does shwo it was updated May 6th 2012..!! They are apparently alive....?[/quote]
I am the owner and builder of Lang amps. I have never built an amp with 8 preamps tubes so this is BS. I already posted that I can be reached at langamps.com
			
			
									
									
						I am the owner and builder of Lang amps. I have never built an amp with 8 preamps tubes so this is BS. I already posted that I can be reached at langamps.com
Re: Lang Amps
I think folks should cut this guy some slack. Is there a reason to have an ax to grind?  See for your self.   It's not his fault someone spoofed his business with a similar website name.  This happens all the time.  It is internet bullying.
http://www.whois.com/whois/langamps.com
Now if you happen to like or not like his product, that's a whole different thing. Everyone's entitled to an opinion.
			
			
									
									
						http://www.whois.com/whois/langamps.com
Now if you happen to like or not like his product, that's a whole different thing. Everyone's entitled to an opinion.





