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My FX loop is too hot, suggestions?

movingpictures

Silver Supporting Member
Messages
2,101
Ive been using this Fender Prosonic forever, but the loop is too hot to use with most things. Line level FX units "see" way too much level coming from the FX loop send. Would a simple volume pedal/box work before the FX unit? Should i get it modded to have a send level pot installed or will above items do the same thing?
Maybe one of these in the loop, before the FX unit?
http://cgi.ebay.com/ATTENUATOR-FOR-AMPEG-SOLDANO-TRAYNOR-VOX-GUITAR-AMP_W0QQitemZ160391472982QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item255813a756

Any help would be great and thanks!
 

Roodboy

Silver Supporting Member
Messages
1,494
I think you may have something mixed up. Line level effects ( like rack gear) +4dB want a hot signal, instrument level -10dB ( most pedals) are lower.
Vox 941 ( a guy is elling one on Rig talk) or ebtech line level shifter may do the trick, that thing on Ebay won't do it.
Good Luck
 

movingpictures

Silver Supporting Member
Messages
2,101
I think you may have something mixed up. Line level effects ( like rack gear) +4dB want a hot signal, instrument level -10dB ( most pedals) are lower.
Vox 941 ( a guy is elling one on Rig talk) or ebtech line level shifter may do the trick, that thing on Ebay won't do it.
Good Luck
Thanks!
No its not mixed up....just too hot. My Intellifex, set to line level, with the input gain turned down, still gets overloaded with a loud, clean signal from the amp.
Is there a way to lower the signal coming out of the loop? I do recall someone modding the Prosonic to have a pot on the FX send. Not sure who could do that locally though....

Any others care to offer suggestions?
 

seeker

Member
Messages
217
I have not used my Intellifex in ages, but I recall you can adjust the input/output levels in the EQ,Hush, and Mixer sections. . You probably have levels too high in your presets. I never had a problem with any FX loop, but you could just insert a volume pedal in the "send " line from your amp if all else fails . Maybe you should perform a "factory reset " to default to the original presets. Your unit might have a switch to toggle from a low to high input level depending on which model you have.
Hope this helps .

H
 

StompBoxBlues

Member
Messages
20,225
It might be hard to find...but try a search here. I know for sure this came up recently (in the last 4 months maybe) and some folks had an answer that was a box...that handled the loop. Maybe it was Fuchs, or... I can't remember but I think it was a manufacturer known for amp making, that also offered a pedal for this.

I also bought a Prosonic (sold now) years ago, had serious problems with it. Last thing I did was buy a little box called SPX-31 or something like that...made by the same folks that make that purple trem with all the knobs..Nobels I think it was. The thing is, it had ins and outs with knobs so you could turn down from the send, use its loop to the pedals, and then turn up on the way out to return...make up volume to get back up there where it started.

See, the main problem I always found was...yeah you can attenuate the signal in the loop before the pedals, but then the whole amp volume gets too low...you can't make it up without some kind of boost on the way back in to the amp return.
 

movingpictures

Silver Supporting Member
Messages
2,101
thanks, ill look into this or a klienulator. The problem is definately with the Prosonic, and not the intellifex. The problem gets worse as you turn the amp up also.



It might be hard to find...but try a search here. I know for sure this came up recently (in the last 4 months maybe) and some folks had an answer that was a box...that handled the loop. Maybe it was Fuchs, or... I can't remember but I think it was a manufacturer known for amp making, that also offered a pedal for this.

I also bought a Prosonic (sold now) years ago, had serious problems with it. Last thing I did was buy a little box called SPX-31 or something like that...made by the same folks that make that purple trem with all the knobs..Nobels I think it was. The thing is, it had ins and outs with knobs so you could turn down from the send, use its loop to the pedals, and then turn up on the way out to return...make up volume to get back up there where it started.

See, the main problem I always found was...yeah you can attenuate the signal in the loop before the pedals, but then the whole amp volume gets too low...you can't make it up without some kind of boost on the way back in to the amp return.
 

seeker

Member
Messages
217
"thanks, ill look into this or a klienulator. The problem is definately with the Prosonic, and not the intellifex. The problem gets worse as you turn the amp up also."

But that's the way the FX loop works, the higher the volume the hotter the send signal. You have to increase the volume on the amp until it begins to clip on the Intellifex, then you use the output level on the unit to control the overall volume.
My current setup is a Fender SS and Budda in stereo with a Lexicon unit in the loop. I have to monitor the input level when dialing in the volume on the amp, then dial up the output level to achieve "unity gain " as Bruce Egnater refers to it.

H
 

movingpictures

Silver Supporting Member
Messages
2,101
"thanks, ill look into this or a klienulator. The problem is definately with the Prosonic, and not the intellifex. The problem gets worse as you turn the amp up also."

But that's the way the FX loop works, the higher the volume the hotter the send signal. You have to increase the volume on the amp until it begins to clip on the Intellifex, then you use the output level on the unit to control the overall volume.
My current setup is a Fender SS and Budda in stereo with a Lexicon unit in the loop. I have to monitor the input level when dialing in the volume on the amp, then dial up the output level to achieve "unity gain " as Bruce Egnater refers to it.

H
The problem is that even at a low volume, and the input gain trim on the intellifex set very low, the input of the intellifex is still too hot and overloads the FX unit. The Prosonic is the ONLY amp to have this effect. Believe me, ive tried every combination. The loop send is too hot.

I have a Eventide Pitchfactor on the way and was looking for a way to lower the loop output so i could use the Pitchfactor in the loop. Im hoping the PF might have more headroom, and will be usable in the loop. Thanks again for the help.
 




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