Converting to a new brand

I guess that wasn't the test he was thinking of. I'll keep looking //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
It was a T-500 I am pretty sure. However, Audioholic has already countered that with a valid remark in his overly thorough post to you. It would only prove that one model (or perhaps even that single specimen) had an unusual bump graphically. It means absolutely nothing concerning the RF amps as a whole over the years.

 
And, RF amps do not have some built in equalization that makes mids sound weird. Id like to see any evidence to the contrary. And no, your ears dont count as any form of proof what so ever.
They have been doing something similar to the following since the 2nd Generation Punch series in the 80s:

cae_0709_07_zrockford_fosgate_power.jpg


 
They have been doing something similar to the following since the 2nd Generation Punch series in the 80s:
cae_0709_07_zrockford_fosgate_power.jpg
There it is. However, this does not prove what you claim it does. First it is a newer model. If someone wanted to prove this was going on since the 80s then one might think about testing an older model. Second, it is only one model that as has been stated. In order to have the audacity to claim they do it across all models since the 80's one should have a pretty broad collection of them to test and compare. All that proves is that particular amp (could be a bad apple) has an unusually suspicious sound profile.

 
Interesting. Im not sure how much weight to place on that graph however. Just a graph is vague (all Im seeing is a graph with a non-linear frequency response plotted out on it), and as deman said, Id expect to see testing of a range of their amps before making any generalized conclusions based off the info.

 
There it is. However, this does not prove what you claim it does. First it is a newer model. If someone wanted to prove this was going on since the 80s then one might think about testing an older model. Second, it is only one model that as has been stated. In order to have the audacity to claim they do it across all models since the 80's one should have a pretty broad collection of them to test and compare. All that proves is that particular amp (could be a bad apple) has an unusually suspicious sound profile.
Remember the 20 Hz to 20 kHz rating on some of the old amplifiers? Why do you think they were rated at +/- 1 to 3 dB? For what it is worth, Rockford Fosgate wasn't the only one guilty of doing this. Kicker, Linear Power, and MTX all did something similar at one point in their rise to glory.

EDIT: And as for my claim.... You are correct, RF may have not been guilty of doing this with ALL of their amplifiers. The ones I owned back in the day had bass and treble knobs on them that COULD NOT be defeated. Sure, they had a theoretical "zero" spot on them, but zero wasn't always zero! //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 
There are 2 reviews one on the T600-2 and the other on the T1000-4 that tests were actually done that validate the hightened eq boost on the amps. Those amps do not have a flat signal. No way I have been using the T400-4 for 2 years so I know what I am hearing. Second, I don't need anyone to hold my hand. Just constructed input was needed not criticism.

 
Here is part of a review from PASMAG about the T1000-4 that verifies my point with the eq bump.

HomeCar AudioTest ReportsRockford Fosgate: Power T1000.4 Amplifier - PAGE 2 Images I am Looking For: images/headers/header_102.png, images/headers/header_category_45.png, images/headers/header_section_9.png, images/headers/header-default.png Dynamic Header Images 1.7 ©2009 Lonnie Knows Everything

Rockford Fosgate: Power T1000.4 Amplifier - PAGE 2 Written by Garry Springgay // Photos By: Rockford Fosgate | 26 August 2008

Share this Twitter Myspace Digg Del.icio.us Yahoo Technorati Googlize this FacebookPrintE-mailVote (0)Tagstest reportrockford fosgateComment (0)IndexRockford Fosgate: Power T1000.4 AmplifierPAGE 2All Pages

Page 2 of 2

LISTENING

I installed the T1000.4 in my labs reference system, and as expected, the amplifier performed admirably. If you like your music on the loud side, but you still need low noise, low distortion, and great dynamics, the T1000.4 is sure to please. With the rear channels bridged into my 4 ohm woofer system, and the internal -24dB/Oct crossover set at about 80Hz low pass, I set the front channels to about 50Hz High Pass, and connected to my reference bookshelf speakers. A quick tweak of the gains balanced the system nicely, and a couple of dozen tracks later, it was easily apparent that the amplifier could easily generate all the oomph I could ask for and then some!

The sound quality was excellent as well, with a clean, articulate, and detailed top end from the front channels, even when the other half of the amp was pounding out the bass notes on my woofer system. During my listening, I did note that the amplifiers heatsink got quite warm, which simply means it was doing it’s job, of dissipating the heat generated by all those devices. I also found that the onboard Punch EQ system is almost a throwback to the previously patented Punch EQ, which was at least partly responsible for building the brands legendary sound way back in the ‘80’s. What’s different about Punch EQ? Well, for starters, it’s not just a bass EQ. While the Punch EQ does provide up to +18dB of boost at 45Hz, it also provides a bump in response at about 14kHz, which can help to overcome road noise and improve the intelligibility of the top end as well. After doing some careful listening, I came away with a very favorable opinion of the sound of the amp, although it didn’t sound quite as flat as my reference amplifier. I was later to discover during my bench testing that there are deliberate “bumps” in the T1000.4’s sonic signature that Rockford Fosgate believe make it a better sounding product when installed in any vehicle. And I would not disagree, anyone who has taken a look at the frequency spectrum of road noise in a modern car would notice that some judiciously placed and properly applied EQ could easily result in superior sonics.

 
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