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Discussion in 'Amps and Cabs [BG]' started by Thunderscreech, Dec 6, 2015.
Standard 810 speakers are 32 ohm (all in parallel for 4 ohm total load.
This thread rocks, it's got more twists and turns than pikes peak!
Not yet. I'm also sick, so this has made eveything 80% more difficult. I will pull that speaker next.
Get well soon. This will be a awesome cabinet when you can get to it.
Two weeks into this thread and the OP can't be arsed to even take note of who made the speakers?!? I'm outta here.
Being sick put a cramp on my plans.
Anyways, I figured out the reason behind the weird resistance reading on my meter....
8 ohm speaker, not even connected.
This is what the rest of the speakers look like on the back.
Wow. A Radio Shack speaker. Most likely came out of a stereo speaker system. Really like the duct tape holding the wires together too.
Definately track down an original speaker for that thing or at least a proper replacement.
If you can, allow one speaker at a time to be connected to the jack, and play at low to moderate levels, and see if any of the 7 originals sound fuked up. (Disconnect/reconnect)
Those are nice speakers
This was not a pro job, to say the least...
They are nice speakers. What I have done is the battery test with a 9 volt, and they all seemed to make sound, except for the disconnected one...but I need to balance the loads before I do any testing with my amp, which wants 4 ohms.
Your amp will be fine with MORE than 4 ohms, less is bad. If the wires allow you to connect only one at a time, connect one at a time (7 times) and play at moderate to low volume to listen for other damage.
Sometimes you can spot them from a mile away.
True for the overwhelming majority of solid-state amps (unless of course they happen to be 2-ohm stable, in which case your statement holds if "2" replaces "4"). Matching, and especially mismatching, cab impedance with valve amps is a more complicated matter and at least in part amp-specific.
Or so I'm written. I'm both inexperienced and technically-challenged in one sorry package.
What is your amp again?
(Or rather, if my quick browse-up of your posts in this thread doesn't lie, ...anew?)
The 137 is the manufacture code for CTS, 7321 is the date code, or 21st week of 1973. Your Ampeg cab was built in 1973.
Buy replacement CTS SVT speaker
While you're at it, put the jackplate back on the outside where it belongs.
Test. If other speakers are blown, fix or replace.
Sell for @$500.
Buy new, moveable-by-you speaker cabinet.
Play music and enjoy.
Huh? What are you rambling about?
If your goal is to just get it working to sell and maximize your profit, you might consider the Jensen Mod 10-50 32. It will be quite a bit cheaper and easier to find. It will also work perfeclty with the original drivers, and in the bottom chamber will not really change the tone.
Your statement, "Your amp will be fine with MORE than 4 ohms, less is bad", is only valid for solid state amps, and not all of them for that matter. For a tube amp, a load of, say, 8 ohms if the amp only has 2 and 4 ohm taps is just as bad, and potentially worse, than a 2 ohm load for an amp with 4 and 8 ohm taps. It depends.
Nice way of asking for clarification BTW.
I have a 120 watt Behringer (I know, I know) BX1200 combo as my practice amp. It sounds okay. I know it would probably be an indignity to hook it up to a cab like that, but it's all I got right now.
I was about to ask what would be a good replacement speaker. Thank you. They look reasonably priced as well.
This is my plan of action.
If you must test individually, skip the musical gear and plug in to a cheap boom box/stereo with removable speakers. It will send signal and who cares if it gets damaged.
Well, what you're saying is much clearer now.
With valve amps 2x impedance is considered within safety, after that current limiting will occur and flyback voltage at OT becomes a consideration. Thus the low to moderate volume suggestion. I agree with you. I just couldn't make sense of your post, sorry I didn't protract further my reply at that time. brevity was was my intent, not snark.
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