I guess as long as no one is coming to hear you as a sorta live 'audition', his idea of how it/you should sound is outta yer hands.As it is his band, my only remedy is to rage quit.
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When I had the R112 hooked up to my 200c, the sound was perfect-for me-but there was only one place I could use them together, and they were overkill there, too. Last time we played that room, the R100 was enuff. But I'll take the 200c next time we're there.Yeah, I know.. overkill! But the bird needs to THUNDER
I do want to mention that I got a reply from Hartke (samsontech) They say the amp is 8 OHMS, not 4 OHMS. Here is their response.
I sent them the same photos I posted here.
"Good day Anthony
This the way it goes, the capacitor changes the ohm configuration , so little is passing through to get to the 5 inch the resistance value of the 5 inch doesn't effect the 15 inch 8ohm woofer . Its safe to say we are operating at 8 OHM . "
I do want to mention that I got a reply from Hartke (samsontech). I sent them the same photos I posted here. They say the cab is 8 OHMS, not 4 OHMS.
Here is their response.
"Good day Anthony
This the way it goes, the capacitor changes the ohm configuration , so little is passing through to get to the 5 inch the resistance value of the 5 inch doesn't effect the 15 inch 8ohm woofer . Its safe to say we are operating at 8 OHM . "
Wow! If THAT didn't just throw another level of confusion into the mix...
Tim
I Totally agree. I will use it alone anyway as you all have advised, but I did want to share what Hartke said on the situation.
Keep on learning!
I understand that, for the lower frequencies, the capacitor introduces a high impedance that adds to the impedance of the tweeter itself. This resulting impedance being much higher in the tweeter branch of the circuit when compared with the impedance of the 15'' woofer alone. Its like the capacitor is pushing the lower frequencies to the woofer because its impedance is related with the frequency acording to the formula Zc=1/(2*3.14*freq*C) [ohm] -> Low freq => High Zc. Can you check the capacitor value (C)? It should be inscribed on its capsule.
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Sorry if I went through a too much technical path... this discussion is being educative to me...
Like I said in earlier post, this combo was sold as the ability to add an 8-ohm cab to run at 4-ohm min. Hartke is not known to run complicated "funny math" with their cabs/combos and have always been very straight forward with their intent. I think Hartkes response is clear and uncomplicated as well clearly stating this cab (15 + 5" driver) essentially runs at 8-ohms. Now does it really run at say 7.42 (totally made up number) ohms? Very likely as no cab, to my knowledge, runs at a true 4, 8 , 16 ohms. And heads comply with this. I just dont see anything fishy or confusing here to be honest. I personally would have no issues with running this with another 8-ohm cab from a 4-ohm capable head.
Keep on learning!
Here it is....
Here is another response from another person at Hartke:
"Aug 23, 2021, 4:29 PM EDT
It is 8 ohms. It is designed so that on a small gig use just the combo and it is 8 ohms. Small gig requiring less power and less speakers. If you want to expand, get another 8 ohm cabinet. The 2 cabinets together will equal 4 ohms. Larger gig, 2 cabs and the amp being presented with a 4 ohm load will produce more power because it is seeing less resistance. (impedance)
The tweeter 5 inch through the capacitor doesn't really effect the impedance.
Customer Service Manager
XXXXXX (Name removed)
Samson Technologies
Zendesk Helpcenter: https://samsontech.zendesk.com/hc/en-us
To stay up to date with new and information from Samson, subscribe to our mailing list: Sign up for the Samson email Newsletter"
Well, I certainly can't argue with firsthand experience and a Customer Service Manager! Thank you, @EncoremMP and @aanthonya for your input and perseverance in this matter.
I have no further concerns, issues or caveats. I have learned something from this. (Not that I'll necessarily remember it next time I see it. But, for now, I'm more educated. ... About this particular kinda cab. ... ... At this particular time. ... Tomorrow? Who knows?)
My apologies to everyone here for dragging this out so much. It was just out of safety concerns, I assure you.
Go for it, tony! Hook up your Rumble 115 to the Hartke head and Hartke cab! And hook up either your Rumble 115 or your Hartke 15(+5) to your Rumble 500 combo! And enjoy the Rumbling!
Now is the time when we all must ... ...
Rumble On! .
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Thank you Anthony!
Well, point by point, this is what I found on the internet. Sorry if this is boring
:1 - Speaker load or impedance changes with the frequency. Rated speaker impedance uses a 400Hz standard.
https://qph.fs.quoracdn.net/main-qimg-c3d8fc64c9e83e06de6f74cd89ebcb5b
Speakers: Impedance (Z)
2 - The lower frequencies result in a lower load impedance imposed from the speakers to the amp. Lower load means more current and more power is requested from the amp by the speakers, increasing heat generation in the amp.
3 - The two capacitors connected in parallel result in a total capacitance of 5.0+1.0=6.0 uF.
according to #47271
4 - For instance, if we consider a pure sinusoidal 400Hz signal, the impedance of the capacitors will be 66ohm.
formula #47267
This will add to the 8ohm tweeter impedance giving you a 74ohm impedance at the tweeter branch of the circuit.
Schematic circuit #47223
This tweeter branch is in parallel with the 8 ohm impedance of the 15'' woofer so the amp will see a load of 7.2ohm which is close to 8ohm and corroborates with the replies from Hartke and with the observations of EncoremMP #47270
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After all that discussion, all I know is that if I want an extension cab for my Stage 800, I should get a Rumble V3 210 or 410. Easy enough. Like G-Dog, not sure if I'll remember enough of the details above for it to be useful to me even 5 minutes from now. But it was interesting to follow.
Thanks for putting up with my thread G-Dog!Well, I certainly can't argue with firsthand experience and a Customer Service Manager! Thank you, @EncoremMP and @aanthonya for your input and perseverance in this matter.
I have no further concerns, issues or caveats. I have learned something from this. (Not that I'll necessarily remember it next time I see it. But, for now, I'm more educated. ... About this particular kinda cab. ... ... At this particular time. ... Tomorrow? Who knows?)
Go for it, tony! Hook up your Rumble 115 to the Hartke head and Hartke cab! And hook up either your Rumble 115 or your Hartke 15(+5) to your Rumble 500 combo! And enjoy the Rumbling!
Now is the time when we all must ... ...
Rumble On!
.
As it is his band, my only remedy is to rage quit.
Maybe he wants a "keyboard bassist" and doesn't know what a real bass sounds like
! If you stay, you may need to be satisfied with your own bass amp as a stage monitor 
.
After all that discussion, all I know is that if I want an extension cab for my Stage 800, I should get a Rumble V3 210 or 410. Easy enough. Like G-Dog, not sure if I'll remember enough of the details above for it to be useful to me even 5 minutes from now. But it was interesting to follow.
Ok, now lemme get this straight. RL, I really don't mean to complicate it for you but, you can add two 8 ohm cabs, or one 4 ohm cab, to your Rumble Stage 800 combo! That's what the impedance switch, next to the Extension Speaker connection, on the back is for. Up for a single 8 ohm cab rated 400 watts (or more), and Down for a 4 ohm load of cab(s) rated 500 watts (actually 533, or more). [Rumblers, please correct me if I mis-state anything here.]
The 4 ohm load works like this:
- If you add two 8 ohm cabs, then that 800 watts is equally split 3 ways into "just" 267 watts each; which is well within the 300 watt rating of the Rumble 115 cab!!! OooOoo! The 210 combo driving two 115 cabs would be muy bueno!
- But, if you add just one 4 ohm cab, it would get 2/3 of the 800 watts, or 533 watts! So, just file that away in case you ever consider a 4 ohm cab. (It could happen.)
Not a problem, tony. It's just one of many interesting discussions here in the thread that is our wonderful Fender Rumble Club. And did you notice how we all discussed this so calmly and civily, without anyone getting upset or needlessly calling names? That's what makes TalkBass in general, and the Rumble Club in particular, such a great place!
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