Downunderwonder

Seriously? Just from how you're (not ) selling it, the finish should appear like it had been applied in 1966 and left on display with nobody playing it for the last 57 years.

There must be PA support out front for the drums to get a good mix. Since there is PA support for drums the excess bass must be cut from the PA resulting in muddy mess of FOH and stage wash bass. All the extra bass on stage gets into the drum mics. More mud. Everyone turns up to hear themselves, yet more mud out front.

Why be louder than the drummer?

Check it hasn't had one end jumpered. Should be fine if it's a mic lead but random patch leads can be weird.

Another possibility occurred to me. If there is clip indication on all the legs into the amp inputs it would mean there might only be 1/2 the potential driving happening. You really should get an XLR cable on the job.

Potentially half your signal then went nowhere causing the one amp channel to be under driven but I would have thought the amp would be smarter and mirror a mono input to both channels in that mode. Putting one cab on each channel will soon tell.

Checking again, this condition was with one cab on each channel? That is the recommended setup. Did you check sound was coming out of both cabs?

Not using correct terms. Speakon is for speakers! Should be a balanced cable, either TRS or XLR from Sansamp to QSC. If you are lighting up the QSC overload light with a clean signal, that's your lot. Output to the cabs should be Speakons. If you have changed anything in the speaker cables from your old amp that would be a good place to look for a muckup.

Question for Notion P/C users. Can you export via PDF or do you have to print locally?

Ok. NEWS FLASH. The QSC manual says it has input sensitivity of 1.15V RMS. You might not be able to overdrive it with a BDDI but RBI no problemo. Starting to wonder if one of OP's speakons is messed up or the 15 already got blown up.

Marvellous plan.

Mixing up dB, dBV and dBU is always going to confuse. I always figured the 0dB on the back of the RBI was so the -20dB pad would have a reference. My RBI had no problem spinning up an old NZ PA amp or a Crown XTI. Afaik they were both standard 1.4V sensitivity input, being 0.7v per leg on a balanced cable. So that would be another potential dog to put down. Is OP running a balanced cable (or shorting half his signal)?

Two pro grade preamps not giving you what you should expect is either user error or your amp isn't operating to spec. 600w is a lot of power, same same as your Ashdown.

Just checking, you are using the 'Sansamp' XLR out from the back of the RBI set to full ( 0dB) output and turning up the XLR on the front panel?

Which part of ''Mike Smethurst ripped me off'' don't they understand? EVERYONE needs to report their FB experience in one 12 hour window or it forgets? Every 6 months I get an email from FB ''we see you have been having trouble participating, perhaps you have forgotten your password, here's a direct login link..''.Unfreakinbeleivable.

You should check the DCR on the 410. If it's 4 ohm the amp might go for a while at 2.7 ohms but the extra heat will do it in.

Reading between the lines it sounds like the previous bridge mono didn't happen so it must have been two cabs on one channel only? Still should have raised the roof. Makes me wonder what could be wrong. Dip switches? Protection mode from wrong cable? Gain stages up the wazoo? User expectations?

It would be very easy for the bridged amp to go all Django Unchained on your cabs. 360w a side really should be making plenty of noise. I have zero confidence in a 600w rating on a 15. I tend to discount those by 50% before they start to strain. So the 360w per channel is ample.

How did you know you can do that? I didn't know about debit card chargebacks until I met that joker. He worked for donations. I guess he felt charging for something that should be common knowledge was bad form. The sorts of sums involved would probably make for very grateful clients. European holidays out of NZ don't come cheap.

If you tempered it with a Fletcher-Munson loudness curve it would be amost equal between bassy bass and vox? That's how I hear reggae anyway.

Read the fine manual! Not too many power amps bridge into 4 ohms so I would knock that off until you have RTFM. Parallel is for 1 cab on each channel, Mono is both cabs on just the one channel. Should be much of a muchness until you get to the bleeding edge of headroom exhaustion. I wouldn't like to guess what your cabs can handle or what the amp can put out. Most likely cabs give out before amp. Bring up the output of the RBI until the QSC indicates. Then bring up the QSC output. Should get pretty damn loud.

I met a joker who made a business out of helping people get refunds for holidays paid for but not supplied due to covid. He said if it went through the merchant banking credit card systems then you're good. But you have to kick up about it. If you look at your coffee receipt for your Debit Card tap and go it will say CREDIT on there somewhere and a little piece has been snaffled by the merchant's bank. Part of that goes to the card companies that own that side of the system and part to the bank. If you put the debit card chip in and push the buttons it goes through eftpos and it's free, because banks don't have to handle your cash. Figured it out yet?

If paying by debit or credit card your payments are guaranteed by the merchant bank who has been taking fees all the long years in anticipation of having the occasional horse go lame along with the astounding profits. Banks don't tell you this, you have to ask.

You do you. Me, I am a 1kGBP thereabouts bassist. Plenty of other bassists can play circles around me. If I showed up with a Sadowsky or a Fodera nobody would notice. Equally nobody would notice if I showed up with a Squier.

If you are lucky you're alright. Iirc they made them in both 4 ohm and 8 ohm. Unfortunately they used pens with ink that all faded away so the only way to tell is put a multimeter across a 1/4" lead and see how many ohms it reads. Should be around 6 ohm of DCR for an 8 ohm cabinet. 125w per cab won't be a problem so long as the combo is on top where you can hear it. Either way if you whipped up a couple of 210 cabs you could take the amp out of the combo and make a good little easy shifting rig.