Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Instruments and Amps Everything that makes music, Especially including instrument amps.

Fender Rumble 60 - what mods to clean this up?
Fender Rumble 60 - what mods to clean this up?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 28th May 2012, 02:51 PM   #21
nazaroo is offline nazaroo  Canada
Join Date: Feb 2012
Originally Posted by nikolozj View Post
I've been suggested to get thinner, as long as, if the speaker has some sort of unbalanced frequency responses, thin wood would sort of balance it, in a way that it would eat up some frequencies (of course we're not talking about some certain measures - just experiment)....
I think this has to be bad advice.

The speaker pushes air by pushing against the frame and front-plate.
Any 'play' or motion in either would distort the sound.
It cannot correct any real or imagined 'imbalances'.
If you suppose that the speaker's excursion is greater in one direction
than in another (e.g., for the same voltage, it moves further out than in with the opposite polarity),
then the flexing of the front-plate cannot possibly correct this.
How would you make a face-plate that was more resistant
to motion in one direction than another?
How would you know which way to flip it?
It sounds like science-fiction to me.

But since its physics, with equal and opposite reactions,
and the magnet (the main receiver of the reaction)
is MASSIVE compared to the speaker cone,
I can't see how there could be much imbalance
if the speaker is resting in the middle and pulls with
the same strength on the magnet in each direction.

Any speaker with such a property would have to be a really bad speaker.
  Reply With Quote
Old 28th May 2012, 03:40 PM   #22
Nigel Goodwin is offline Nigel Goodwin  England
diyAudio Member
Join Date: Jul 2005
Location: North Derbyshire
Originally Posted by nazaroo View Post
But if you're lugging the speaker cabinet to and from gigs,
in cars or up stairs, then it probably becomes significant.
Depends if you can afford the extra expense or not - you could always that extra on better drivers.

Way back in the 70's, we made some Altec style bins for our band - and cost was a serious issue. The chipboard cut to size cost 8.00 for two 12 inch sized bins, and the drivers cost 12.00 each - we didn't even cover them, just painted them with matt black paint.
Nigel Goodwin
  Reply With Quote
Old 5th July 2012, 02:36 PM   #23
Woodstockz is offline Woodstockz
diyAudio Member
Join Date: May 2012
Originally Posted by nazaroo View Post
Well, I pulled the speaker in the cabinet,
and it looks underpowered. claim 100w but looks more like 50.
It could be distorting. There doesn't seem to be any rubbing,
but I'm not a speaker expert.


Has anyone got better bass sound by switching out speaker or cabinet?
I replaced the speaker on my Ampeg combo with an Eminence Neo basslite -and went from practice amp to solid coffee shop amp. It is more efficient, and handles more power. Neos are more expensive, but are lighter. I was surprised at the small,dinky magnet, but it works.

You need to isolate where distortion is coming from, cabinet, speaker, pre or power amp. I think that the speakers are a weak link on most combo amps.

My combo had 1" voice coil diameter. That's the first thing that I look for. A replacement with a larger voice coil will generally handle more power. But speakers with larger voice coils are more expensive.
  Reply With Quote


Fender Rumble 60 - what mods to clean this up?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fender Rumble 25 Speaker Rattles JohnR242 Instruments and Amps 24 Today 02:37 AM
Fender Frontman 212R-Clean channel sounds "dirty" EronSilva Instruments and Amps 5 24th January 2011 05:50 PM
Alto Control 60 mods ?? Adrculda Digital Source 1 27th February 2009 04:42 AM
Schematic for a Fender Rumble 25 gtrtech Instruments and Amps 4 3rd June 2008 02:43 PM
Patrolman SW-60 mods mbates14 Parts 0 10th November 2005 12:10 AM

New To Site? Need Help?

All times are GMT. The time now is 08:25 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio