Hair Splitting: Power Amp Edition

[OrganicZed]

102.7 dB seems low for a 350W per channel power amp and a 2x12 cab. I can hit 115+ dB average while barely going past 1/3 on the gain knobs of my similarly rated solid state power amplifiers and Axe-FX III. Are you setting the ouput to +4 dBU?

 

[Alex Kenivel]

102.7 dB seems low for a 350W per channel power amp and a 2x12 cab. I can hit 115+ dB average while barely going past 1/3 on the gain knobs of my similarly rated solid state power amplifiers and Axe-FX III. Are you setting the ouput to +4 dBU?

It has been discussed ITT already, I was not hitting the poweramp hard enough as I was sending signal from Out3. I've since changed that and currently cutting my grass with decibels.

 

[bikescene]

@Alex Kenivel I have a stereo power amp that I run in bridged mode by using a female 1/4” to dual banana jack (Hosa BNP-116BK). I use it to connect speaker cabs using regular 1/4” speaker cables into my power amp’s bridged banana jack outputs. Might be easier than rewiring cables.

 

[Boudoir Guitar]

All my farting around with different power amps has gotten me to just keep a bunch of wonky speaker cables around that have bare leads on 1 end and 1/4" jack on the other and I just use bare wire connectors whenever possible on the amp end

 

[bikescene]

I’ve used Room EQ Wizard to measure the taps of my solid state power amps before. All of the measurement utilities (sweeping, I/O selection, graphing, digital level setting) is self contained in the application and it’s free. I didn’t save the results though.

My SD Powerstage 170 didn’t look all that flat with its tone knobs at noon. I measured a flatter response with my Behringturd A800 power amp, so I moved onto using the A800 for modeling anmplification and making IRs.

If you feel like digging deeper, I suggest using REW so you don’t have to search through a plugins interface to figure out the default graphical smoothing settings.

 

[JiveTurkey]

I'll be splitting hairs once a new tax year hits

 

[Boudoir Guitar]

I'll be splitting hairs once a new tax year hits

I'm feeling nice this Holiday season and also a little gun-shy having just gone through lots of pictures from 12 years ago when I had much thicker flax atop my scalp, but man...

 

[Alex Kenivel]

I’ve used Room EQ Wizard to measure the taps of my solid state power amps before. All of the measurement utilities (sweeping, I/O selection, graphing, digital level setting) is self contained in the application and it’s free. I didn’t save the results though.

My SD Powerstage 170 didn’t look all that flat with its tone knobs at noon. I measured a flatter response with my Behringturd A800 power amp, so I moved onto using the A800 for modeling anmplification and making IRs.

If you feel like digging deeper, I suggest using REW so you don’t have to search through a plugins interface to figure out the default graphical smoothing settings.

I have it, 5 years ago I was running sweeps of everything. Now I mostly want to play guitar but get the curious itch every once in a while. I have to relearn how to use it every time and I'm impatient.

Good shout though, I really should use it more.

 

[Alex Kenivel]

All my farting around with different power amps has gotten me to just keep a bunch of wonky speaker cables around that have bare leads on 1 end and 1/4" jack on the other and I just use bare wire connectors whenever possible on the amp end

I feel like this is a possible "next step" for me on this fork in the road, but the desire to STFU and play guitar overtakes me with what little time I have to myself!

 

[Boudoir Guitar]

I feel like this is a possible "next step" for me on this fork in the road, but the desire to STFU and play guitar overtakes me with what little time I have to myself!

I don't advocate farting around!

 

[Boudoir Guitar]

I feel like this is a possible "next step" for me on this fork in the road, but the desire to STFU and play guitar overtakes me with what little time I have to myself!

(but if you are interested in farting, my home-use speaker cables are just some lamp cord from the hardware store soldered to a 1/4" jack plug and the other ends separated and stripped back a little bit).

 

[Alex Kenivel]

(but if you are interested in farting, my home-use speaker cables are just some lamp cord from the hardware store soldered to a 1/4" jack plug and the other ends separated and stripped back a little bit).

I was wondering if some Romex cable would do the trick

 

[Chocol8]

I was wondering if some Romex cable would do the trick

It works great, but only when the speaker terminals are big enough.