Can anyone help me with the differences between these amps? Hifonics has so many different models I'm getting confused. What are some of these features? Like Adjustable Bass Equalization? ------------------ Hifonics BX1500D Mono Amplifier VERSUS HiFonics BX1605D 1600 Watts Super D-Class Amplifier HiFonics BX1605D 1600 Watts Super D-Class Amplifier ------------------- Hifonics BX1205D VERSUS HiFonics BX1000D 1000W Amplifier ------------------- What separates the BX, ZX, and NX models from each other? Somehow on Etronics.com the BX500D is the same price as the BX1500D, how is that possible? There must be something I'm missing... Also there seem to be REGULAR BX models, then like BXxxx5D like they end with 5... and they cost MUCH more for some reason! I'm going to get one of these Hifonics amps soon, either from Ikesound or Etronics... and I just want to find out why these things are priced so randomly? Thanks for your help, and forgive me if the differences are obvious... and by differences, I'm not talking about 100watts here and there... because for the most part the prices don't reflect that... like the 500 watt being the same EXACT price as the 1500 watt... weird -Steven

well. umm.. thats a good question.

i have the brutus bx1000watt class-d mono block amplifier. i really only bought it because my friend has a bx1500d which is the 1500watt amplifier and it can really put out power. i decided to go with with the 1000watt because thats really all my subs need. as it is right now im rms'ing more than my subs should so im careful not to always have the volume really loud. i "let my subs cool off" in other words.


the hifonics amplifiers are great. BX models are brutus. from what i know they only have one fuse outlet. ZX models are zues and most come with 2 fuses in them even though they put outt he same power as the brutus amplifiers do. myself along with 2 other people in know with hifonics amplifiers agree that the brutus line just performs a little bit better than zeus.

enough of the blah blah blah crap, i guess i cant really answer your question. haha.

all i can say is good choice on picking a quality amplifier if your going to spend the money on it.

I was going to pick the 1500D or the 1800D

but then I see the 1605D which *Technically* only has about 100 watts more tan the 1500D, but is almost $100 more!

If anyone can answer, is the 1605D just the new 2005 model or something?

This site has specs on both amps... I can't see anything that should make the 1605 worth much more...



1500d

1605d

yeah i think its the models years in which they came out. the 1000D and 1500D came out in 2004. i think the 1605 and such were released in 2005. your right, theres not a difference really between the amps. they both perform and have the exact same specifications besides the 100watt difference. both are capable of doing the exact same things and have the same specs.

that's pretty much what I was thinking... the only thing that catches my attention are the following differences:

1500D
# 1500 Watt D-Class Amplifier
# D-Class Amplifier
# Additional High Speed MOSFET Output Devices
# PWM Mosfet Power Supply
# Zeus EVXP (Exponential Vari-Power Supply)
# SPC - Simpatico Coil Design
# HSMD - Hifonics Surface Mount Design
# Balanced Line Inputs

1605D
# 1600 Watt Super D-Class Amplifier
# Super D-Class Amplifier Topography
# Complementary High-Speed MOSFET Output Devices
# MOSFET EXVP (Exponential Vari-Power Supply)
# SPC Twin Turbo Torroids with Sympatico Coil Design
# Balanced Line Inputs
# Soft Start

after all this... I think I will dish out the extra 40 bucks for the 1605D... but can someone answer what these features are?
1) "Super" D-Class
2) MOSFET EXVP versus MOSFET PWM versus Zeus EXVP
3) Additional/Complemetary High-Speed MOSFET Output Devices... (I know what a mosfet transistor is... is this just a description of some internal circuitry, or some sort of multi-amp communication or anything like that?)
4) Balanced Line Inputs?
5) Soft Start?
6) and the most important... is there an advantage of a "SPC Twin Turbo Torroids with Sympatico Coil Design," over the 1500ds, "SPC - Simpatico Coil Design?"

I just wonder if they really just changed some of the wording for the new model... if so then the only things I see are:
-100 watts
-"Super D-Class"
-Soft Start
-60 versus 80amp fuses... (2)

wow I didn't realize that Hifonics is the same as Autotek, Crunch, MaxxSonics...

makes me wonder... because, aren't the Crunch amps pieces of crap?

In short, marketing BS. I could go on but it would be a waste of time.....

Did they get bought out? I coulda sworn HiFonics was a high-end brand, too... ?? I'm confused...

check this out... http://www.maxxsonics.com/

this makes me seriously doubt Hifonics in a big way...

hey NEEDAZ, what's a balanced line input? The connectors like an S-Video plug on a television...

is this sorta like a low-impedance connection for other high-end audio equipment...

There are two ways to use a cable in signal transmission, balanced and unbalanced. Unbalanced is the most common. With un-bal one of the conductors is at ground. Think of a seesaw, if it’s unbalanced one side will rest on the ground. With balanced transmission nether of the conductors is at ground (think of the balance seesaw). In stead, one conductor has the signal on it, and the other has the same signal 180* out of phase. The advantage is, one, (this is a simplification) any interference that is introduced on one conductor is also introduced in phase on the other. So when the signal gets to the amp, it’s looking for two signals out of phase. When it takes the signals and puts them in phase, now the noise is out of phase and get essentially canceled out. Two, with no ground on the signal cable, no ground noise and no possible damage to ether the HU or the amp form improper grounding. No more bad grounds at the amp killing the HU.
There may be more to it then that, maybe Jim could chime in.

SoundStream used to have a setup for balanced interconnects; that is, before They were bought out. Not sure if they still have it. Uh... yeah, I don't see it anymore.

I found the owner's manual for it though, and if it's spec'd for Reference series amps, those were made by Soundstream around 92-94. So that's when SoundStream was competition-level quality, way back when... http://www.soundstream.com/sub/owner_manual/rblt.pdf

They give a bit of description for the balanced transmitter in the PDF... note that the pages don't flow right. Page "3" isn't directly after page "2" if you view that file; I guess it was meant to be printed out and stapled into a booklet form.

out of curiosity... do you have to have a special deck to output this, or can an un-balanced output from a headunit be converted into a balaned output?

Not that I would ever do this... just curious.

Vary few HUs have Bal outputs. There are converters out there as well.

this one has me confused...

totally different series... but nearly the same specs... it's weird, becaue the titan looks like a cheap series... it just happens to have these two higher-end 1000 watt and 1500 watt amps...

TX 1505D:
TITAN Series Offers:
• Mono-Block Amplifier
• Choose a Class-A/B or D-Class Amplifier Design
• Silver RCA Line-Outs for Multiple Amplifier Systems
• Silver 4-Gauge Power Connectors

BX 1605D:
Brutus Series Offers:
• Mono-Block Amplifier
• Super D-Class Design
• Ultra – Fi MOSFETS
• Brutus EXVP (Exponential Vari-
Power Supply)
• SPC – Simpatico Coil Design
• HSMD – Hifonics Surface
Mount Design
• PWM MOSFET Power Supply
• Variable Bass Equalization
• Sub-Sonic Filter
• 4-Gauge Power Connectors
• Maxxi-Fuse

they seem to have 3 different series... all around the same wattage and specifications...

Yeah the way the Soundstream setup worked; you got a convertor at the radio that would change RCA's into balanced, and then the balanced output would plug right into the Soundstream amp.

I never used balanced outputs, never heard them in person, just a bit of useless knowledge I guess.

I guess if you've got that much doubt about the Hifonics stuff, might as well move onto another brand. I've been hoping someone would come in here and say "Hifonics was bought out" or "Hifonics is competition level" or "Hifonics is cheap", but I guess nobody's going to.

Ok so I did a search; I did find one message where the guy apparently feels very strongly about this topic: http://www.layitlow.com/forums/index...&#entry2271070

yeah clearly no one would pick the A/B over the D-Class...

Damn you Hifonics for having too many choices...

I think I'll just go with the 1605D... has anyone heard anything bad of these Hifonics amps? Would anyone recommend any other brand? I have a friend that can get me ANY Infinity Speaker or Amplifier for AT COST... but I've not heard much in the area of Infinity Amplifiers...

1210a

the only drawback I see on this amp... is it's got a smaller overal fuse rating... and the power connections require crimp connectors...

all the hifonics have 4AWG screw-type power connections.

hey Needaz or anyone who might know the answer to this...

say I had two amplifiers close in RMS power output...

the 1200 watt from Hifonics
or the 1300 watt from Infinity

The difference between the two is that the Infinity puts out its FULL 1300 RMS watts at 2ohms... and the Hifonics puts out its FULL power at 1ohm...

which one is better? I've heard before that a higher ohm rating is always better... whether its a better SN ratio or something.. but I can't remember... any thoughts?

Which one is Better? There are a LOT of variables that come into play here. S/N radio, %THD, which one actually puts out which ever/how much ever power, damping factor, do you need the power at 1 ohm or 2 ohm, do you really need 1300W, ...? What will the amp really do and what do you really need?

well say you had two different amps, and a pair of subwoofers to go with each amplifier...

assuming that the amps output the same exact RMS wattage, but one ouput at 1 ohm, and the other at 2ohms. and one had a sub load of 1ohm, and the other had a sub load of 2ohms, respectively.

does the ohm design of the amplifier make that big of a difference in this situation? --- assuming that you can find the speakers to match it?

I have heard before that if you have a 1 ohm stable amp... say 1600 watts RMS... and you ran it at 8 ohms because thats all the power you really needed, that you'd get a cleaner sound... was that just heresay?

The only reason I ask... is if I am going to buy a new amp, AND new subwoofers... I could get a 2ohm amplifier @ 1300 watts with a 2ohm load... or a 1ohm amplifier @ 1300 watts with a 1ohm load. -- I just don't see the benefit either way.

All things being equal, in theory it would be better to run the one stable amp at a two load. Not just for sound quality, but reliability. Lower junction temps, power supply can run more stable, ...
Head room is good.

okay