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RH750 owners a little insight pleade

mamushi

mamushi

Jan 16, 2011
35
2
#1
Recently I purchased a TC Electronics RH750 . The original intent was to clean up my sound a bit, My aging BBT500 is starting to get a little dirty ..
On unpacking it I found it had plenty of power and a lot of volume but no matter what settings I use it still sounds overdriven ,my cabs are rated for 600 watts and recently all drivers were replaced , is it impossible to get a loud clean sound from this amp ?
 
#2
Make sure tubetone is off, and gain well below where the clip light comes on.

There is a generous amount of mid distortion/warmth in the RH amps, along with a deep lows roll off. This was intentional and part of the design goal, but is not for everyone.
 
#3
thanks for the response 4-string I'm inclned to believe its a factory defect I can apreciate warmth and a bit of grit but even at low volume i'm getting an overdriven sound
the tube tone indicates its off and I am way below any clip indication. contacted the store i got it from and they are preparing a return and replacement hope it works out.
 
#4
It's not a factory defect...it's how TC made a 236w RMS amp into a "750w" amp. They cut off all low lows and high highs, then compress the heck out of what's left. That brings up overall volume and gives the user the impression that they're playing a much higher rated amp.
 
#5
mamushi said:
thanks for the response 4-string I'm inclned to believe its a factory defect I can apreciate warmth and a bit of grit but even at low volume i'm getting an overdriven sound
the tube tone indicates its off and I am way below any clip indication. contacted the store i got it from and they are preparing a return and replacement hope it works out.
Click to expand...

Yeah, that doesn't sound right. Hope it works out for you!
 
#6
While I refuse to address this one person in this thread because of his repeated calling me a liar (reported again, BTW), he brought up a point I will address...reading the APM literature, they say it does, indeed, kick in when you push the amp.

But what point in the 236w does the pushing begin? Tests show it's got absolutely nothing left in the tank past that 236w, which seems to be the norm for micros, so that's not meant as a slam on TC, just the way micro amps seem to work. So at what wattage point does the pushing start? 200w? 100w? 50w? How do you push an amp past 236w if it has nothing else past that point?

Therefore I stand by what I said.
 
#8
Sounds like a defect to me too. Which is odd, apart from the odd knob falling off these amps have been pretty reliable.

Hate to ask the op a stupid question but have you tried another bass, cord, speaker cable speaker etc
 
#9
JimmyM said:
It's not a factory defect...it's how TC made a 236w RMS amp into a "750w" amp. They cut off all low lows and high highs, then compress the heck out of what's left. That brings up overall volume and gives the user the impression that they're playing a much higher rated amp.
Click to expand...

Yes... like most tube amps. But only when they are driven hard.

However at low gains the RH750 should (and eventually will) sound clean. IME. Again like tube amps.


Mamushi, try what 4-string says, gain WELL below the clip level (quite a few clicks before this point). You can always turn up master. If it works then you can use the "preset volume" to boost volume of clean presets respect to dirty presets. I love clean and get clean loud enough for a 6 piece loud rock band.
 
#11
Jimmy, according to you, Ampeg is the way to go.
Some of us accept this, even though we do not agree. Is it too much to ask for the same?

I love my RH450, very clean even at high volumes, i do use the matched cabs though.. They have announced that the RH series would sound best with their matched cabs.

Hope you figure it out!

Casper
 
#12
Jenra said:
Jimmy, according to you, Ampeg is the way to go.
Some of us accept this, even though we do not agree. Is it too much to ask for the same?

I love my RH450, very clean even at high volumes, i do use the matched cabs though.. They have announced that the RH series would sound best with their matched cabs.

Hope you figure it out!

Casper
Click to expand...

I Have an RH450 too, and like it a lot, and I think Jimmy does normally make good contributions. He favours Ampeg. Fine. He does not care for TC. Fine. At least he gives you reasons, he does not just say "it sucks".
Please, stop arguing with him for some historical reason of yours. He has every right to express his opinion. Negative opinions are as valuable as positive ones.
You disagree. That's hardly the end of the world, eh?
Please don't spoil yet another thread.
 
#13
JimmyM said:
Well fair enough. You guys own them and I don't...I've only played them a couple times. But I have to say that my impression of playing them was similar to the OP's.
Click to expand...

I find it's easier to get a sort of overdriven sound from it than other amps. But back off tubetone control (I hate that name) and input gain, and it will clean up with plenty of volume to go.
If it doesn't, it suggests there is a defect in that particular amp.
 
#14
Please address this issue factually, without brining up personal biases. This bickering is really getting old.
 
#17
So I see it's OK to speak honestly about anything but TC. All of a sudden, when it comes to TC there's a big line drawn, and anyone who brings it up has an agenda, right? Yes, it was my fault TC made those amps to work like that. How dare I ever mention it!

Hey, as I said many times before, the guy asked a question and I answered it. Maybe it IS broken, but my impression of them when I've played them is that it wasn't. Sorry if I'm wrong, but if you have a problem with me talking about the APM, take it up with TC because it sure as hell wasn't my idea.

BTW, I may play Ampeg, but honestly, I don't give a rat's ass what anyone else plays.
 
#18
JimmyM said:
So I see it's OK to speak honestly about anything but TC. All of a sudden, when it comes to TC there's a big line drawn, and anyone who brings it up has an agenda, right? Yes, it was my fault TC made those amps to work like that. How dare I ever mention it!

Hey, as I said many times before, the guy asked a question and I answered it. Maybe it IS broken, but my impression of them when I've played them is that it wasn't. Sorry if I'm wrong, but if you have a problem with me talking about the APM, take it up with TC because it sure as hell wasn't my idea.

BTW, I may play Ampeg, but honestly, I don't give a rat's ass what anyone else plays.
Click to expand...


Answer honestly.

I'm not an amp guy - I have what I have, and it sounds good and works. I have no dog in this fight.

However, I looked at TC's specs on this unit, and everything you say seems to be exactly what TC says. When comparing apples to apples, the 750 is a 267 watt amp.

It's always a red flag when a company has to put up 3 pages of data to explain why they rate a piece of gear a certain way.
 
#19
mamushi said:
Recently I purchased a TC Electronics RH750 . The original intent was to clean up my sound a bit, My aging BBT500 is starting to get a little dirty ..
On unpacking it I found it had plenty of power and a lot of volume but no matter what settings I use it still sounds overdriven ,my cabs are rated for 600 watts and recently all drivers were replaced , is it impossible to get a loud clean sound from this amp ?
Click to expand...

I've had both the 450 and 750 and have never had the problem you describe. Could be something wrong with it. Double check that you are in the right mode for the tubetone. I can't remember, but I'm think it's on the same knob as the compressor depending on whether the shift button is pressed. I've found myself tweaking the wrong thing because I depressed the shift button instead of the mute and vice versa.
 

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