Speaker Upgrade for Fender Rumble 40

[Mark77]

I rolled up a couple stiff pieces of a 8.5"x11" magazine cover into a tube 2" in diameter and inserted them into each port of the cabinet. Cut off the length by a 1/2" before it bottoms out at the rear of the cabinet. It cost virtually nothing. It increased the low frequency and volume on the low frequency noticeably. It is easily detected on any HZ sound meter free ap. Why waste money on expensive speakers? Try it for yourself and see what you think. It will cost you nothing, it's super easy and you may be very pleasantly surprised. View attachment 5026845

Excellent idea. I ended up ordering a Speaker Cabinet Port Tube 2-1/2" ID Adjustable and glued it in behind the existing port. I have it at about 7" length tuned to about 35 Hz


Port Length Calculator

Standard Port Calculator - DIY Audio Guy


Net Enclosure Volume (ft³ or liters): 2.5
Tuning Frequency (Hz):
Number of Ports: 2
Port Type: Rectangular Round
Port Diameter (inches or cm): 2.5

Port Length: 6.81 inches

 

[LiptonJigglers]

When your feet have outgrown your shoes, changing shoe strings is not the correct answer

 

[tvbop]

Ive never understood the Rumble line,.. There simply isnt any mid range grit.. you know the stuiff that enable you to be heard. Anyway good choice on the Traynor....

 

[tom-g]

Ive never understood the Rumble line,.. There simply isnt any mid range grit.. you know the stuiff that enable you to be heard. Anyway good choice on the Traynor....

Never understood people that are unable to turn knobs.