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Author Topic: Advanced Rockford Amp Question
MR. IGOTBASS
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Ok its kinda long so here we go.

Rockford 1100a2, how much input voltage can it handle?

When you have the gains down on an amp and the source is giving the amp its maximum input voltage, by turning up the gains will you increase the output voltage or will the amp achive its full output voltage with the gains turned down and the input of the amp recieving the maximum input voltage it can take.

What situation will be better for SPL.

A. Amp with its output scoped at full output not clipping?

B. Amp at full output voltage with its signal clipping but at full tilt?

Please help if you understand what im sayin.

Thanks

Ben

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Posts: 750 | From: Pittsburgh PA, Grant Ave 126 | Registered: Nov 1999  |  IP: Logged | Report this post to a Moderator
stryker79
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I am not for sure but it used to be that all Rockfords would not take more than 14.6 volts. They had internal circuitry to shut themselves down after that. This is a question that Dukk would know that answer on.

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Posts: 181 | From: Okoboji, IA | Registered: Mar 2000  |  IP: Logged | Report this post to a Moderator
low_rider
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I turn my amp up 3/4 the way. You can blow the sub easier with distortion than over powering them, so if the amp can push a clean load turn it up to a point, but if not don't push it more than 3/4 way.

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Posts: 1105 | From: Conway Ar | Registered: Sep 1999  |  IP: Logged | Report this post to a Moderator
JLAUDIO21
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Well ok I believe stryker 79 is right about the voltage input and as for setting the amp you should set the amp at almost full if not full you will get the best results from this setup..

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Posts: 81 | From: Central NY | Registered: Apr 2000  |  IP: Logged | Report this post to a Moderator
JL Audio
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the gain is just to match the voltage up with the HU but if u turn it up too high u will get some dimming lights...pullin to much voltage

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Posts: 461 | From: Lincoln,NE | Registered: Jan 2000  |  IP: Logged | Report this post to a Moderator
Earthquake_200DHC
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Clip the amp.. In retrospect amplifiers are designed to have 3 times thier input voltage exceeded 3:1 so if that amps gain @ max is
2.5 V in, you can hit it with 7.5.

Long before line drivers existed Ive used speaker level into RCA's to achieve high volt signal @ RCA inputs. for SPL? clip the amp.. be a man..

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Earthquake 200DHC
2 JL 18w6's @ 1.5 Ohms
Linear Power LP50
1 set 6x9's
3 sets of somponents
86 mustang SVO
pentium 200 w/indash display
no HU, just mp3 + FM tuner card. never SPL'd, not interseted in competing..
- matt


Posts: 95 | From: pgh, pa | Registered: Apr 2000  |  IP: Logged | Report this post to a Moderator
Earthquake_200DHC
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BTW, K I C C S car stereo blows.... great big donkey balls..


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Earthquake 200DHC
2 JL 18w6's @ 1.5 Ohms
Linear Power LP50
1 set 6x9's
3 sets of somponents
86 mustang SVO
pentium 200 w/indash display
no HU, just mp3 + FM tuner card. never SPL'd, not interseted in competing..
- matt

[This message has been edited by Earthquake_200DHC (edited 04-26-2000).]


Posts: 95 | From: pgh, pa | Registered: Apr 2000  |  IP: Logged | Report this post to a Moderator
Dukk
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Whatever that means...

RCA input voltage - dunno. Don't care. I always set gains by ear, it works best in the real world IMO. Yeah, it clips the amp, but if you can;t hear it, don;t worry about it. For pure SPL - it takes a LOT of testing. Those who win spend more time on the system AFTER it is installed than before...

Power input voltage - around 16V before they protect.

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Posts: 3690 | From: Abbotsford, BC, Canada | Registered: Mar 2000  |  IP: Logged | Report this post to a Moderator
Todd140
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a tech rep told me 15v

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Posts: 16 | From: Virginia Beach, Va USA | Registered: Apr 2000  |  IP: Logged | Report this post to a Moderator
ShadowStar
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Driving the amp into square wave clipping WILL cause it to produce more power.. Hence more SPL.

ShadowStar

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Posts: 2579 | From: Somewhere In the Northeast | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
Nutz
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A clipping signal can cause your spl to decrease. You want the voltage as high as possible. If your speakers are destoring you have the chance of frying a voice coil.

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Posts: 846 | From: Pittsburgh, PA | Registered: May 2000  |  IP: Logged | Report this post to a Moderator
   

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