TC Electronic RH750 ???!??

[Munjibunga]

Anyway, I spent an hour or so today adjusting the center frequencies and gain for my presets to get the tones I require. It was time well spent. I wanted one of the presets to have an aggressive modern tone, rich in high mids but with plenty of bottom. I found my tone after dropping the bass frequency and boosting mids a little at 500 hz and 700 hz. I also lowered the treble a few clicks and boosted it.

 

[Munjibunga]

Hey Munji, apparently the default frequency settings are different from the 450, so bass is at -3 clicks and treble at +8. The two mids are noon. Just to keep us wondering, I guess

Aha. Yes, the centers are different, but the ranges are the same. Funky.

RH450:

Bass Center Freq: 280Hz (range: 71-1120Hz, Gain: +15/-24dB)

Low Mid Center Freq: 400Hz (range: 100-1600Hz, Gain: +15/-24dB)

High Mid Center Freq: 800Hz (range: 200-3150Hz, Gain: +15/-24dB)

Treble Center Freq: 1600Hz (range: 400-6300Hz, Gain: +12/-24dB)


RH750:

Bass Default Freq: 200 Hz (range: 71-1120 Hz, Gain: +15/-24 dB) - Shelving type.

Low Mid Default Freq: 400 Hz (range: 100-1600 Hz, Gain: +15/-24 dB)

High Mid Default Freq: 800 Hz (range: 200-3150 Hz, Gain: +15/-24 dB)

Treble Default Freq: 4000 Hz (range: 400-6300 Hz, Gain: +15/-24 dB) - Shelving type.

I can't understand why they went to 4,000 hz for the treble on the RH750. Interestingly, they still show the same frequency ranges for each band but, as we now know, the straight-line graph doesn't work for the RH750's bass and treble.

So I wonder if the lines have a bend in them at the defaults, or if we need to plot the three points and use a French curve.

 

[Thombas]

Anyway, I spent an hour or so today adjusting the center frequencies and gain for my presets to get the tones I require. It was time well spent. I wanted one of the presets to have an aggressive modern tone, rich in high mids but with plenty of bottom. I found my tone after dropping the bass frequency and boosting mids a little at 500 hz and 700 hz. I also lowered the treble a few clicks and boosted it.

Cool, I remember lowering the bass frequency all the way and booting a bit was of of the things Ken did in the youtube vid where he eq'ed the 450 in the direction of the F500 - which by nature nails "modern and aggressive" pretty well. Those presets are on of the things I'm really looking forward to dig into. Most of what I do requires shifting between something like you describe there, and a more ol' school, gritty tone. Where's that DHL guy...

 

[Thombas]

So I wonder if the lines have a bend in them at the defaults, or if we need to plot the three points and use a French curve.

Close your eyes and draw it by hand

 

[Munjibunga]

Close your eyes and draw it by hand

For me, that would be a sin. I started my career as a draftsman.

 

[4-string]

Finally got to use the RH750/RS210/RS212 setup with my main gig last night, and that rig just kills. The RS cabs match up very well with the bright Sadowsky MV4, plenty fat at the same time.

Got another outdoor gig tomorrow - large stage, big PA, free to play as loud as I want.

 

[Thombas]

Finally got to use the RH750/RS210/RS212 setup with my main gig last night, and that rig just kills. The RS cabs match up very well with the bright Sadowsky MV4, plenty fat at the same time.

Got another outdoor gig tomorrow - large stage, big PA, free to play as loud as I want.

Cool! Mine is yet to land, and no gigging before next Saturday. Glad to hear your rig performed, and full throttle outdoors tomorrow - sounds good

 

[KJung]

Aha. Yes, the centers are different, but the ranges are the same. Funky.

RH450:

Bass Center Freq: 280Hz (range: 71-1120Hz, Gain: +15/-24dB)

Low Mid Center Freq: 400Hz (range: 100-1600Hz, Gain: +15/-24dB)

High Mid Center Freq: 800Hz (range: 200-3150Hz, Gain: +15/-24dB)

Treble Center Freq: 1600Hz (range: 400-6300Hz, Gain: +12/-24dB)


RH750:

Bass Default Freq: 200 Hz (range: 71-1120 Hz, Gain: +15/-24 dB) - Shelving type.

Low Mid Default Freq: 400 Hz (range: 100-1600 Hz, Gain: +15/-24 dB)

High Mid Default Freq: 800 Hz (range: 200-3150 Hz, Gain: +15/-24 dB)

Treble Default Freq: 4000 Hz (range: 400-6300 Hz, Gain: +15/-24 dB) - Shelving type.

I can't understand why they went to 4,000 hz for the treble on the RH750. Interestingly, they still show the same frequency ranges for each band but, as we now know, the straight-line graph doesn't work for the RH750's bass and treble.

So I wonder if the lines have a bend in them at the defaults, or if we need to plot the three points and use a French curve.

Remember, on the RH750, 'default' does not mean 'noon'. The basic 'double the hz at equal intervals' formula should work fine and is easy to calculate, and I believe lines up with the 'default off noon' frequency settings baked into the RH750.

 

[Vic]

Aha. Yes, the centers are different, but the ranges are the same. Funky.

Nope. The DEFAULTS are different but the ranges are the same. Important distinction between defaults and centers.

Just as Ken says, the RH750 does NOT have defaults with everything set to center.

This right here was the crux of the confusion and discussion previously about this (including the more recent discussion when somebody did a factory reset and noticed them off-center).

 

[Munjibunga]

Nope. The DEFAULTS are different but the ranges are the same. Important distinction between defaults and centers.

Just as Ken says, the RH750 does NOT have defaults with everything set to center.

This right here was the crux of the confusion and discussion previously about this (including the more recent discussion when somebody did a factory reset and noticed them off-center).

OK. So on the RH750, if the treble frequency control is at noon, it's at 1600 hz? I'm glad you wizards are out there. I'm starting to catch on.

 

[Vic]

OK. So on the RH750, if the treble frequency control is at noon, it's at 1600 hz? I'm glad you wizards are out there. I'm starting to catch on.

That is my understanding, yes.

 

[Munjibunga]

That is my understanding, yes.

Cool. Thanks.

 

[Jazzdogg]

Are you guys looking for a chart like this? Simple logarithmic chart of the frequency ranges for each knob from -12 to 12 (0=Noon).

It'd be interesting to see this graph with a dB reference on the vertical axis, and the TCE +/-12 scale references overlaid.

 

[pilmat]

It'd be interesting to see this graph with a dB reference on the vertical axis, and the TCE +/-12 scale references overlaid.

Are you looking to see what "shape" of EQ you would be applying? If so it would be a 3D graph that would be pretty hard to read.

Rather, I initially thought of making a an Excel sheet that you could insert your settings and it would draw the graph. This however would require knowing the shelving functions (math equation of how the shelving is implemented) and knowing the boost/cut linearity of each knob. Both things are unknowns (at least to me ) and that level of math is what makes me a mechanical engineer and not an electronics engineer!!!

 

[Jazzdogg]

Are you looking to see what "shape" of EQ you would be applying? If so it would be a 3D graph that would be pretty hard to read.

Rather, I initially thought of making a an Excel sheet that you could insert your settings and it would draw the graph. This however would require knowing the shelving functions (math equation of how the shelving is implemented) and knowing the boost/cut linearity of each knob. Both things are unknowns (at least to me ) and that level of math is what makes me a mechanical engineer and not an electronics engineer!!!

If the knobs are +/- 12, and range of the tone controls is +15 dB/-24dB, does "noon" on the knob equal -4.5dB?

 

[Tunaman]

Munji - You're the resident Eden expert... what would u say Eden Navigator vs RH750?

 

[pilmat]

If the knobs are +/- 12, and range of the tone controls is +15 dB/-24dB, does "noon" on the knob equal -4.5dB?

No, noon is 0dB (no boost or cut).

 

[bassclef04]

Can you break down your settings for that aggressive modern tone in clicks please?

Anyway, I spent an hour or so today adjusting the center frequencies and gain for my presets to get the tones I require. It was time well spent. I wanted one of the presets to have an aggressive modern tone, rich in high mids but with plenty of bottom. I found my tone after dropping the bass frequency and boosting mids a little at 500 hz and 700 hz. I also lowered the treble a few clicks and boosted it.

 

[4-string]

Ahh, sweet sounding rig. Fun gig outdoors today, RH750 master at noon. Loud , great tone on stage. Those RS cabs continue to impress.

 

[Munjibunga]

Munji - You're the resident Eden expert... what would u say Eden Navigator vs RH750?

Well, with the Eden, it's going to be easier to dial in your tone, because both the level and frequency controls are accessible and visible simultaneously. While the RH750 is very versatile, the curve is a little steep when setting EQ.

If I were going to give the nod to one or the other on overall versatility and tone, it would go to the Eden without hesitation. Of course, you're luggin a bigger hunk of kit, and you need a power amp, unless you buy the powered version of it.