20 Most Recent Laney RB9 300 Watt Bass Head Questions & Answers


Best to leave the limiter on unless you want to blow the amp and require repairs. Limiters protect the amp and also sometimes the speakers. The limiters reduce the gain when the amp reaches the maximum swing. If the gain were not reduced the amp would "flattop" which results in the circuitry saturating and massive distortion and if this condition is sustained, components can overheat or short out requiring repair. The LED MAY be just an indicator of clipping rather than an indicator of on/off. I downloaded the manual and what I have just said is CORRECT. The LED is a clipping indicator.

There is a caution regarding this amp and the sequence to turn power on. This amp does NOT have good speaker protection and you have to have the gain control down when turning on. The limiter, if you leave it on, might help protect your speakers when powering on. Most good power amps have circuitry to disconnect the speakers while amplifier is powering up and becoming stable, this one does not, so heed the warning and for certain leave the limiter ON... It just might save the amp and your speakers.

Laney RB9 300... | Answered on Mar 02, 2011


First, plug your guitar and cable into a different amp to make sure the problem is the amp. Then check to see if you have output from any headphone jack or effects loop. If so your problem is in the power amp section. If not, it's likely the preamp section. Whichever section it is, it will most likely need to go to the shop.

Laney Music | Answered on May 22, 2016


There is a heat sensor on the heatsink (to cooling IC / transistor) which decides current / voltage, in case of overheating. This is indeed to secure IC / transistor power of destruction.
The cause of the excessive heat, the impedance mismatch between the amp to the speakers. It is also possible that parts already exist within the amplifier that is almost / half broken, for example, changing the resistor value, electrolytic capacitors are bulging or dried, isolation transformer windings were charred, solder joint cracking etc. Should be checked, before the fatal damage.

Heatsink on the amplifier (the picture is owned Connelectronic):


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Laney Music | Answered on Sep 05, 2015


https://blog.caristaapp.com/mlb-evo-testers-wanted-q7-q8-a8-827e78827e0f

Music | Answered on Jan 21, 2021


How do I hey the headphones to work ?

Music | Answered on Jan 19, 2021


Video and text based help on the link

https://www.google.com/search?q=Ypg-625+key+is+stuck+upward

..

Music | Answered on Jan 19, 2021


Last post will not let me put pictures for some reason so mine says Ibanez 61-12491
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Music | Answered on Jan 09, 2021


Just add some adhesive Velcro (hook and loop fastener) The industrial rated for 25 pound should be good for most players, 75 pound rated minimum for Jerry Lee Lewis type players.

Set the stand at the height you want, put the hook tape on the stand leg top and then target the fuzzy strip to the piano. Be aware the pound rating is rated per square inch- so you will want to put a 10 or 12 inch strip of fuzzy on the piano, and 1 or 2 inch strips on the stand leg.

Music | Answered on Dec 20, 2020


This is a common problem with Bugera. And, unfortunately they are made by Behringer who is known to have the worst customer service of all and do not follow through on their warranties.

Music | Answered on Dec 12, 2020


Request the manual from Rogue.

Music | Answered on Dec 07, 2020


It's here $16.15

TOP+ AC Adapter Charger for TC Electronic Vibraclone ...

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Music | Answered on Dec 02, 2020


I suggest checking to make sure those 2 units can actually use the same adapter and also check the polarity on both to see if they are the same. Most stompbox stuff usually has negative on the center of the socket, instead of positive like other devices. If I spend a little time I could find the manuals and find out for myself but, this was my logical "top of my mind" kind of advice. Those values (volts,mA, and polarity) must be known in order to help you further. I believe it will be 9v, a few 100 mA's, and negative in the center on both but, not sure.

Music | Answered on Nov 25, 2020

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