Spewy Posted February 12, 2023 Posted February 12, 2023 (edited) Guys , I’ve just had a senior moment. I’m running 2 410 4ohm cabs. One from each of the SpeakOn outputs from the amp. Thinking they were separate circuits I’ve had the ohm switch at 4ohm. However, having just read the manual it states these are in parallel and if I’ve got this right I should be switched to 2ohm? Is this correct, and if so , how I haven’t blown anything is beyond me🤦♂️ Edited February 13, 2023 by Spewy Quote
fretmeister Posted February 12, 2023 Posted February 12, 2023 They are parallel so two 4 ohms are 2 ohms total load. You should set the amp to 2 ohms. If it’s still working ok don’t worry. Amp designers often build in a bit of user error into the specs! 2 Quote
Spewy Posted February 12, 2023 Author Posted February 12, 2023 Cheers, it’s bloody obvious, but you know how it is👍👍 1 Quote
fretmeister Posted February 12, 2023 Posted February 12, 2023 On 12/02/2023 at 12:11, Spewy said: Cheers, it’s bloody obvious, but you know how it is👍👍 Expand I do. At least once a month I think my Ashdown has packed in and get really upset and then I remember to check the little headphone out switch that mutes the speaker outs… Quote
agedhorse Posted February 12, 2023 Posted February 12, 2023 (edited) On 12/02/2023 at 10:57, Spewy said: Guys , I’ve just had a senior moment. I’m running 2 410 ohm cabs. One from each of the SpeakOn outputs from the amp. Thinking they were separate circuits I’ve had the ohm switch at 4ohm. However, having just read the manual it states these are in parallel and if I’ve got this right I should be switched to 2ohm? Is this correct, and if so , how I haven’t blown anything is beyond me🤦♂️ Expand Correct, set the amp to 2 ohm mode (NOT 4/8 ohm mode). This is covered in detail in the owner’s manual. This is why we put so much effort into the protection circuits. [edit for bad typo] Edited February 13, 2023 by agedhorse 2 Quote
Downunderwonder Posted February 12, 2023 Posted February 12, 2023 On 12/02/2023 at 22:26, agedhorse said: Correct, set the amp to 4 ohm mode. This is covered in detail in the owner’s manual. This is why we put so much effort into the protection circuits. Expand Either you're having a senior moment also or I have no idea what's going on. Surely it's 2 ohm mode switch time with 2 times 4 ohm cabs = 2 ohm worth of cabs?!? Quote
fleabag Posted February 12, 2023 Posted February 12, 2023 If they're seperate circuits as spewed up thought, then setting to 4 ohms as mr horse said would be correct ? Quote
Downunderwonder Posted February 13, 2023 Posted February 13, 2023 On 12/02/2023 at 23:52, fleabag said: If they're seperate circuits as spewed up thought, then setting to 4 ohms as mr horse said would be correct ? Expand It's a mono amp afaik. Quote
fleabag Posted February 13, 2023 Posted February 13, 2023 But we dont know what amp. TT 800, WD 800, D 800, D 800+ ? The TT 800 is dual channel but whether that means completely separate amps or not, no idea Quote
Downunderwonder Posted February 13, 2023 Posted February 13, 2023 I took it the 800+ in the thread title indicated D800+, aware that it has the switching for 2 ohm operation, and it's the only one with 800+ in the name. Quote
fretmeister Posted February 13, 2023 Posted February 13, 2023 @agedhorse You awake yet? Or are you hungover from watching the colonial junior rugby? 1 Quote
fleabag Posted February 13, 2023 Posted February 13, 2023 On 13/02/2023 at 00:40, Downunderwonder said: I took it the 800+ in the thread title indicated D800+, aware that it has the switching for 2 ohm operation, and it's the only one with 800+ in the name. Expand I thought it was Mesa 800, plus to two 4 ohm cabs, and the 'to' was a typo Quote
fleabag Posted February 13, 2023 Posted February 13, 2023 On 13/02/2023 at 09:35, fretmeister said: @agedhorse You awake yet? Or are you hungover from watching the colonial junior rugby? Expand It was about 3 in the morning when you posted that 😁 1 Quote
Spewy Posted February 13, 2023 Author Posted February 13, 2023 On 12/02/2023 at 22:26, agedhorse said: Correct, set the amp to 4 ohm mode. This is covered in detail in the owner’s manual. This is why we put so much effort into the protection circuits. Expand Just to clarify, This is a 800+ Amp, it states in the manual that the outputs from the amp are in parallel. I am running a single 4ohm cab from each output. Two cabs in total. Are you saying the switch should be set to 4ohm? Sorry to be thick , but that seems to contradict itself. However I really appreciate your help🤣👍 Quote
Stofferson Posted February 13, 2023 Posted February 13, 2023 On 13/02/2023 at 14:41, Spewy said: Just to clarify, This is a 800+ Amp, it states in the manual that the outputs from the amp are in parallel. I am running a single 4ohm cab from each output. Two cabs in total. Are you saying the switch should be set to 4ohm? Sorry to be thick , but that seems to contradict itself. However I really appreciate your help🤣👍 Expand Hi mate 2 x 4 ohms cabs would be 2 ohm load, switch it to 2 ohm 1 Quote
agedhorse Posted February 13, 2023 Posted February 13, 2023 On 12/02/2023 at 23:28, Downunderwonder said: Either you're having a senior moment also or I have no idea what's going on. Surely it's 2 ohm mode switch time with 2 times 4 ohm cabs = 2 ohm worth of cabs?!? Expand On 13/02/2023 at 13:06, fleabag said: I thought it was Mesa 800, plus to two 4 ohm cabs, and the 'to' was a typo Expand On 13/02/2023 at 14:41, Spewy said: Just to clarify, This is a 800+ Amp, it states in the manual that the outputs from the amp are in parallel. I am running a single 4ohm cab from each output. Two cabs in total. Are you saying the switch should be set to 4ohm? Sorry to be thick , but that seems to contradict itself. However I really appreciate your help🤣👍 Expand Sorry guys, that was a horrible typo. It should have been 2 ohm mode not 4 ohm. 1 Quote
Spewy Posted February 13, 2023 Author Posted February 13, 2023 Cheers! Anyway brilliant circuit protection , it works a treat🤣 1 Quote
fretmeister Posted February 13, 2023 Posted February 13, 2023 User error... designer error... it's all the same Quote
agedhorse Posted February 13, 2023 Posted February 13, 2023 On 13/02/2023 at 15:01, fretmeister said: User error... designer error... it's all the same Expand Probably a good example of two wrongs not making a right... 1 2 Quote
BassmanPaul Posted February 13, 2023 Posted February 13, 2023 (edited) On 13/02/2023 at 09:35, fretmeister said: @agedhorse You awake yet? Or are you hungover from watching the colonial junior rugby? Expand I never understood why they called it Football when the oval 'ball' seems to be carried most of the time! the US has the National Football League NFL and here in Canada we have the Canadian Football League CFL. Edit: At school I was required to play Rugby. I hated the game! Grammar schools seemed to play Rugby whilst lesser schools played football. I always wondered about that! I knew that if the ball ever came to me it was prudent to get rid of the thing before I was crushed by burly guys on the other team! The 'Beautiful Game' is called Soccer. At the moment the ladies teams are being badly treated by the league and haven't even been paid yet for the 2022 season. Disgusting!! Edited February 13, 2023 by BassmanPaul 1 1 Quote
Nebadon2000 Posted February 18, 2023 Posted February 18, 2023 If it was a Stereo amp it would work as OP imagined 😀 Quote
fretmeister Posted February 18, 2023 Posted February 18, 2023 On 18/02/2023 at 14:15, Nebadon2000 said: If it was a Stereo amp it would work as OP imagined 😀 Expand And if it was wagon it would look like my mother in law. 1 1 Quote
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