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RH750 owners a little insight pleade

#21
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.
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I think on this occasion, it would be best if we all just helped the OP. I totally understand you aren't happy with TC about the specs etc. To be honest, I have 'no dog in the fight' as I am happy with my amps, and yes, no doubt the OP should be told how the APM works in these amps.

But, after having the 450 and now the 750, I can personally state that they will stay very clean. Yes, they might sound 'compressed' at various points, but thats the whole tone idea with the amp. You can push these amps to the limit and they won't (well not IMO) clip nastily like, for example, a Markbass.

I believe the OP is acidentally overdriving the input (make sure that gain light is only flashing occasionally), has the Tubetone on a little, or the amp is faulty.

PS - Despite the drama around TC and Ampeg, and countless other brands, I still like TC, and I would like to get back into Ampeg at some point.

The other thing, totally off topic, is this. Why would TC make an amp with less watts and put in complex systems to limit it and bring out the volume, when they could have just left the power module as it is, or included a higher power one, for cheaper.

I am no amp tech, or engineer, so that's way out of my understanding im afraid.
 
#22
Pacman said:
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.
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None the less, hopefully this now won’t just become another TC amp bashing thread instead of allowing the happy campers with TC amps to try and help the OP!!!
 
#23
I agree, Joe, and I will once again point out that I did not say that to bash TC. TC now discloses the truth. It took them way longer than it should and you have to go looking for it, but they do disclose it now, and I no longer bash them. I sincerely thought that was the OP's problem based on my experience with playing them.

And that is my last word on the subject. Anyone else who has a problem with it, take it to PM and I'll be happy to straighten you out in private.
 
#24
JimmyM said:
I agree, Joe, and I will once again point out that I did not say that to bash TC. TC now discloses the truth. It took them way longer than it should and you have to go looking for it, but they do disclose it now, and I no longer bash them. I sincerely thought that was the OP's problem based on my experience with playing them.

And that is my last word on the subject. Anyone else who has a problem with it, take it to PM and I'll be happy to straighten you out in private.
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U make me laugh Jimmy.........
 
#26
Musicman20 said:
But, after having the 450 and now the 750, I can personally state that they will stay very clean. Yes, they might sound 'compressed' at various points, but thats the whole tone idea with the amp. You can push these amps to the limit and they won't (well not IMO) clip nastily like, for example, a Markbass.

.
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+1
This is what I was trying to point out. Compression and cutting the sub sonic bass is not the op's problem it is clipping, bringing up that other stuff has nothing to do with it.
 
#27
arai said:
+1
This is what I was trying to point out. Compression and cutting the sub sonic bass is not the op's problem it is clipping, bringing up that other stuff has nothing to do with it.
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+1 Something not right with the OP's unit. Or, something is set funny with the gain. That preamp is very powerful, and can get a bit intimidating when you are first getting use to it.
 
#28
KJung said:
+1 Something not right with the OP's unit. Or, something is set funny with the gain. That preamp is very powerful, and can get a bit intimidating when you are first getting use to it.
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Unless it is something wrong with his other gear that happened to go bad at the same time.
OP have you tried another head with all the same gear? Could be as simple as a flat bat in the bass etc. You did say there is new drivers in the cab, something loose? Who knows. The whole thing needs further investigation
 
#29
thanks for all the input guys I actually have 2 other setups with the same cabs i use a sansamp and a stereo poweramp for refrence ( cleanest possible setup ) my BBT500 was my main gigging amp and for years was very powerful and clean recently it started getting a bit dirty probably a little loss of power from the transformers .The TC was purchased to get back to that powerful and clean tone i always loved, with a bit of grit when needed. Got to say on the low end side had no problem and the highs can cut thru right to the jangly fret sound i use on a few tunes i have sent it back and am awaiting a replacement . as far as trying other basses I have 3 my 74 p (warm mellow and with the gretest tonal range) a 2001 mexican p that is bright and hot , and a mark hopus which is ....a mark hopus one flavor one sound I am glad to hear that some have said they get a very clean sound from thiers and that has me optimistic about the amp. As far as the misleading wattage thing not really an issue its all about the tone and flexability and that fact that at 55 i like lighter gear .. thanks again all who chimed in positively or otherwise always a help and edcuation coming here .
 
#30
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.
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It's a brilliant idea IMO, to not reproduce low frequencies the human ear can't hear to protect endangered 'lil baby speakers the world over.

And , now I can get more out of EA 112x, which I had previously stopped using.

My pant-legs still are a-flappin' .
 
#31
fraublugher said:
It's a brilliant idea IMO, to not reproduce low frequencies the human ear can't hear to protect endangered 'lil baby speakers the world over.

And , now I can get more out of EA 112x, which I had previously stopped using.

My pant-legs still are a-flappin' .
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That's only perceived a-flappin', fraublugher

horseneighing72.jpg
 
#36
You know, I let the tc hating crowd start to make me want a different gigging amp. Then I realized I was being totally stupid and embarrassed for letting that happen. The power of suggestion is great everywhere... especially TB. I dig the tone, love the flexibility, and cant imagine needing to play louder than it puts out. And to stay mildly on subject, I think the op is fully aware his unit was a dud and has full knowledge of gain staging.
 
#37
If you fully read through the whole techno speil from TC, it's clear that the whole design of the APM is to elimnate unwanted overdrive/clipping from the amp.

Therefore if you have the tube tone dialed out the gain set at a non input clipping level adjusting the master should never result in amp clipping. It may compress upto 12dB from what I could tell and I could very much believe that they've put in high and low pass filters (doesn't sound dissimilar to the s/fx thumpinator designed to protect amps and speakers in the very same way)

And some peoples ears may detect that compression and frequency limitations (the vast majority probably wont)

But their design reason's for the amp was to prevnt overdrive unless input gain or tube tone are engaged to do so, so if the OP's amp is alwas overdrive then it sounds like that is a fault/problem with the performance not the design.
 
#39
matybigfro said:
If you fully read through the whole techno speil from TC, it's clear that the whole design of the APM is elimnate unwanted overdrive/clipping from the amp.

Therfore if you have the tube tone dialed out the gain set at a not input clipping leve adjusting the master should never result in amp clipping. It may compress upto 12dB from what I could read and I could very much believe them putting in high and low pass filters (doesn't sound dissimilar to the s/fx thumpinator designed to protect amps and speakers in the very same way)

And some peoples ears may detect that compression and frequency limitations (the vast majority probably wont)

But there design reason for the amp to overdrive unless input gain or tube tone are engaged to do so, so if the OP's amp is alwas overdrive then it sounds like that is the problem.
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Agreed.
 
#40
Well got the replacement today and yes there is no problem with the new one staying clean ( a relative term) at any volume .. My guess is it had to be a defect in the first one , tube tone on this one works well and when turned off goes back to a clean sound. will try it out tomorow night at practice at stage volume with 2 15's and see how it sounds. thanks once again to all who chimed in :)
 

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