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View Full Version : Old School Rockford Fosgate Punch 45HD Review - The Original "Cheater" Amp



bigdwiz
10-07-2010, 08:19 PM
Specs per Rockford Fosgate:

POWER RATINGS:

-4 Ohms - 22.5 watts per channel continuous power, both channels driven into 4 Ohms from 20-20,000Hz with less than 0.05% THD

-4 Ohms - 40 watts per channel continuous power, both channels driven into 4 Ohms at 1000Hz with less than 10% THD

-2 Ohms - 35 watts per channel continuous power, both channels driven into 2 Ohms from 20-20,000Hz with less than 0.1% THD

Frequency Response - 20-20,000 Hz +/- 1dB

Bandwidth - 15 - 100,000 Hz +/- 3dB

Damping Factor:
At Circuit Board - over 200 (at 4 Ohms)
At Speaker Lead - over 50 (at 4 Ohms)

Signal to Noise Ratio - Over 80dB unweighted

EQUALIZATION:

Bass Boost: 0 to +18dB maximum at 45Hz
Treble Boost: 0 to +12dB maximum at 20,000Hz

PROTECTION:

The Punch 45HD Mosfet is protected by two 3-Amp speaker inline fuses and by a 15-Amp battery fuse. A thermal switch shuts down the amplifier in case of overheating. Internal circuitry limits power in case of overload.

DIMENSIONS:

6.6" Long x 8.6" Wide x 2.2" High


Again, I've done a video overview of this amplifier. Just displaying the amp, connections and some facts about the amp. Also, I incorrectly mentioned the actual specs from the "birth sheet". It stated 91 watts/ch into 2 Ohms (not 92 as I mentioned) I'll do a sound test in an upcoming video, so stay tuned! I also have other tests including Punch 30, 75, 150, a few newer amps and a Hafler MSE88tn.

YouTube - Rockford Fosgate Punch 45HD - Old School Cheater Amp! (http://www.youtube.com/watch?v=Y6cU7mq5nP0)


-BigD

Louisiana_CRX
10-09-2010, 12:53 AM
I have several of the old school punchs and haflers all good amps

bigdwiz
10-09-2010, 09:57 AM
I have several of the old school punchs and haflers all good amps

No doubt. There are also some "old school" sleepers out there from Sony and MTX, but RF has always been my favorite. I may pick up an old school Orion HCCA225 tomorrow locally. Always wanted one of those for some reason.

Louisiana_CRX
10-09-2010, 10:01 AM
No doubt. There are also some "old school" sleepers out there from Sony and MTX, but RF has always been my favorite. I may pick up an old school Orion HCCA225 tomorrow locally. Always wanted one of those for some reason.

they are nice and clean sound ...should give you around 500 at 1ohm

bigdwiz
10-09-2010, 11:06 AM
they are nice and clean sound ...should give you around 500 at 1ohm

Sweet! I only wish they had a bass EQ for boosting the low end...

Louisiana_CRX
10-09-2010, 11:18 AM
you might can luck up and find a nice...300 PRQ for cheap on ebay....

bigdwiz
10-09-2010, 11:45 AM
I just looked at the ampguts website and it appears some of the HCCA225's did have a bass control? I've only seen a picture from the top of the one I may buy.

Orion HCCA225 (http://ampguts.com/gallery/showphoto.php?photo=4967&title=orion-hcca225-outside&cat=1289)

Louisiana_CRX
10-09-2010, 11:49 AM
It may have the bass boost EQ on the side depending on model....I think it was preset at 10db at 40hz but its been a while I'm pretty sure it wasn't adjustable and I don't have an owners manual in front of me right now...to verify the details

bigdwiz
10-22-2010, 03:12 PM
The 225HCCA model I bought was the "flip top" model with the crossover and does not have any bass control. This amp is STRONG though! I'll have to see if I can find enough subs to get it down to a 1ohm load bridged and run it through my tests....

bigdwiz
11-21-2010, 07:58 AM
Added a video showing the P45HD pushing (2) Kicker 10" Solobarics. The mic was not close enough to the subs to get the full effect, but trust me, they were THUMPIN'.

Enjoy!

See the embedded video below or click the link for the HD version.

YouTube - Old School Rockford Fosgate Punch 45HD vs. Kicker Solobaric Subs (http://www.youtube.com/watch?v=sQ0X4zZ76OE&hd=1)



http://www.youtube.com/watch?v=sQ0X4zZ76OE

hispls
11-24-2010, 01:28 AM
The 225HCCA model I bought was the "flip top" model with the crossover and does not have any bass control. This amp is STRONG though! I'll have to see if I can find enough subs to get it down to a 1ohm load bridged and run it through my tests....

1 ohm LOL. Get down to .5 and watch those old red orions go.

IIRC we used to run some pretty absurd low loads on those Punch amps as well. 1/2 ohm tri-mode the only amp in the car sort of thing.

gunz4me2
11-28-2010, 01:04 PM
You could always do *THIS* (http://www.bcae1.com/srchengn.htm) to the Punch 45 just prior to the HD model.

Audiohazzard
12-11-2010, 09:42 PM
One of my first amps was the old 45's growing up was one of these, I loved it!!!!!! I had two kicker Stillwater 15's on it at one time and it was loud!! tried to kill it just so I could get a bigger amp, but she wouldn't die. One of my boys still has her till this day. great great amps

RFCV
12-23-2010, 12:34 PM
One of my first amps was the old 45's growing up with one of these, I loved it!!!!!! I had two Kicker Stillwater 15's on it at one time and it was loud!! Tried to kill it just so I could get a bigger amp, but she wouldn't die. One of my boys still has her till this day. Great great amps

I know exactly what you mean! :thumbupw:

Started out with 1 Punch 45, then 45 & 75, 75 & 150 & now 2 Punch 150's from 1989, just before the HD models. I have been faithfully running my 2 150's from then until now & absolutely love them! Still able to amaze & keep up if not surpass the new school especially in clean SQ!

PPI_GUY
12-25-2010, 01:39 AM
I ran 4 Kicker Free-Airs off one RF Punch 45 (model preceding the HD series) back in the late 80's. Hard working little amps but, they couldn't hold a candle to the HCCA 225.

Louisiana_CRX
12-25-2010, 02:51 AM
I remember a buddy back in the day had 4 15 punch subs in a wall on a single punch 45 in an extended cab S10....and it sounded pretty good...that was many moons back...I'm sure they were basic RF 15's probably about 150rms each....

RFCV
12-27-2010, 06:27 AM
They couldn't hold a candle to the Orion HCCA 225.

The Punch 150 could, but not go below 2 ohms like the 225.