Peavey 410 TX 4X10 Inch Bass Cab

[Simon Barden]

I see that the guy who did the mod had already removed the tweeter (which seems to be universally considered as a bad unit) so you are really letting the drivers work as full range units and providing more treble. 800Hz is the common centre EQ frequency used by most bass amp with a single mid control, so 3.5kHz and above is really letting the low/mid treble back through that the HF driver won’t be providing. That Eminence driver looks to be giving useful output up to about 5kHz, after which it drops down quite quickly, so removing the crossover and the HF driver will make that treble available from the 10” drivers.

The bass and mid controls on guitar amps are normally up an octave from those on bass amps, plus your amp’s are just subtractive, so you may find a bass graphic EQ pedal (or a wider range pedal with more bands than say a Boss guitar graphic pedal has), useful in sculpting your bass sound.

[DrNomis_44]

I see that the guy who did the mod had already removed the tweeter (which seems to be universally considered as a bad unit) so you are really letting the drivers work as full range units and providing more treble. 800Hz is the common centre EQ frequency used by most bass amp with a single mid control, so 3.5kHz and above is really letting the low/mid treble back through that the HF driver won’t be providing. That Eminence driver looks to be giving useful output up to about 5kHz, after which it drops down quite quickly, so removing the crossover and the HF driver will make that treble available from the 10” drivers.

The bass and mid controls on guitar amps are normally up an octave from those on bass amps, plus your amp’s are just subtractive, so you may find a bass graphic EQ pedal (or a wider range pedal with more bands than say a Boss guitar graphic pedal has), useful in sculpting your bass sound.

Hmmmm....I thought that the footswitchable EQ in my Fender Super Twin both boosted and cut frequencies, I do understand that the typical 3-Band tone controls in a Fender amp only cuts frequencies, and yes you're right, the tone controls on a guitar amp are normally voiced an octave above a bass amp's tone controls, maybe I might get some good results if I switch the Super Twin's EQ on.