4 to 6 channel amp recomendation for 5.1 DD - Page 2

antimatter · 04-29-2004, 10:57 AM

When I get the amp i will post a review

meddler · 04-30-2004, 08:45 PM

Quote: Originally Posted by antimatter

When I get the amp i will post a review

I have heard that the new soundstream amps arn't as good as the old ones. It will be good to read your review as I am looking at buying one

SinnerG · 05-01-2004, 12:40 AM

I've been doing some research on an "all in one" amp to do 5.1. Only three have made the cut....

1. Audiobahn A5100T

Features

4-Ohm RMS Power Output
Front: 125W x 2
Center: 75W x 1
Rear: 75W x 2
Subwoofer: 300W x 1
2-Ohm RMS Power Output
Front: 200W x 2
Center: 130W x 1
Rear: 130W x 2
Subwoofer: 500W x 1
Class A/B MOSFET Circuitry
PWM MOSFET Power Supply
Double Sided Glass Epoxy Circuit Board
6-Channel RCA Input
Variable 18dB High / Low-Pass Crossovers
Variable Subsonic Filter
3-Way Protection Circuitry
Cobalt Blue Illumination
Blue LED Voltage and Status LEDs
High Gloss Chrome-Plated Finish
Nickel-Plated Block Terminals
Fan Cooled with Flame Fan Grille

2. Soundstream D'Artagnan

• RUBI™ (Rapid-Use Branched Impulse) Proprietary power supply topology
• STACT™ (STabilized Apex Current Topology) Reduces power supply stress by 50%
• Auto High Current™ Matches the amplifier for virtually every load application
• Chassisink™ Transistors are located between circuit board and heatsink for optimal heat dissipation
• Variable Input level controls for exact input match to amplifier
• Continuously variable 24dB low-pass crossover (40Hz to 220Hz)
• Continuously variable 12dB high-pass crossover (50Hz to 200Hz)
• Hawkins Bass Control™ Proprietary bass equalization topology
• Harmonic Bass Alignment™ Produces tighter and more accurate bass reproduction
• Continuously variable subsonic filter (13Hz to 30Hz)
• Trident™ amplifier protection topology
• IDI™ (Intelligent Distress Indicator) gives visual conformation of protection status
• Balanced Line inputs for the highest level of noise rejection • Platinum RCA input and output
• Platinum 4 gauge power inputs
• 10Hz – 30 kHz frequency response
• >100dB S/N ratio• 0.02% THD• 6 Channels
• RMS @ 4 ohm 65 x 5 + 200 x 1
• RMS @ 2 ohm 100 x 5 + 400 x 1
• RMS @ 1 ohm 500 x 1 (sub only)
• Dimensions: 19” x 11.5” x 2.25”

3. Soundstream DaVinci

SPECS

NUMBER OF CHANNELS 7
OUTPUT POWER (WATTS): RMS @ 4 Ohms 50 x 4,+100 x 2,+200 x 1
RMS @ 2 Ohms 100 x 4,+200 x 2,+ 400 x 1
RMS @ 1 Ohms 500 x 1 (subwoofer channel only)
T.H.D.: <0.02%
FREQUENCY RESPONSE: Channels 1-6 15 - 50k
Channel 7 25 - 2k
SIGNAL TO NOISE RATIO: >100dB
CHANNEL SEPERATION: >60dB
DAMPING FACTOR: >200
INPUT SENSITIVITY: 500mV - 5.0V
CROSOVER SLOPES: High-pass/Band-Pass 12dB
Low-Pass 24dB
CROSSOVER FREQUENCIES (HZ):* High-pass/Band-Pass 50 - 4k
Low-Pass 200-800
REAR CHANNEL DE-EMPHASIS: 6dB
DIMENSIONS (INCHES): 19 x 14 x 5.5

IMHO, the Audiobahn A5100t has the best bang for your buck (better specs than the D'Artagnan), but the DaVinci is my dream setup.

fantomas · 05-01-2004, 01:50 AM

Quote: Originally Posted by Raged

The classes are what type of amplification it is.

D is digital amplication which means 100% of the signle is amplified.
Class A amplifies 100% with no distortion
anc Class B amplifies 50% with distortion.

"The “D” in class-D is sometimes said to standfor “digital.” This is not correct because the operation of the class-D amplifier is based on analogprinciples. There is no digital coding of the signal."

http://users.ece.gatech.edu/~mleach/...01/ClassD2.pdf

class A has good sound quality.
class B is efficient
class AB is efficient and sounds good.

do you really have a center speaker in your car?

i'd go with a 5 channel amp and a mono amp for the subs instead of just one amp.

jusatry · 05-01-2004, 02:03 AM

Quote: Originally Posted by fantomas

"The “D” in class-D is sometimes said to standfor “digital.” This is not correct because the operation of the class-D amplifier is based on analogprinciples. There is no digital coding of the signal."

http://users.ece.gatech.edu/~mleach/...01/ClassD2.pdf

class A has good sound quality.
class B is efficient
class AB is efficient and sounds good.

do you really have a center speaker in your car?

i'd go with a 5 channel amp and a mono amp for the subs instead of just one amp.

Can you either
a)translate that article into english
or
b)explain what class D does mean?

I always thought the classes had to do with efficiency rating for power, D being the best.

???

antimatter · 05-01-2004, 02:40 AM

I should get my D'artigan amp in tomorrow (well i guess it is today) anyways i will be installing it this afternoon. Depending on if i hit any snags or not i will post a review tonight or sunday.

I was reading the PDF online and I got excited. This AMP should handle all of my needs but only time will tell

@sinnergy. I did look at that audiobahn but (unexplainably) didn't have a good feeling about it.

@jusatry I was wondering what the classes were all about recently. I found a good explaination on crutchfields website. If you are curious do a google search.

fantomas · 05-01-2004, 11:48 AM

crutchfield's site...a much better explaination of the classes.

http://www.crutchfieldadvisor.com/S-..._glossary.html

that link in my previous post..i was just referring to the first page on how class D does not neccessarily mean digital. i did some more researching and i guess there are two catagories of class D amps and one is digital (or mostly digital).

ZanGManN · 05-03-2004, 11:30 AM

Ya, I also noticed the audibahn and it seems nice according to the ratings, however, in my experience soundstream usually under rates its amps (meaning the specs they give are well under the actual power output). Also due to my sub configuration, I need a sub channel with the lowest stable configuration available ...

falconey · 05-03-2004, 01:30 PM

800-2500 bucks for amps...my goodness I feel like the pauper surrounding by princes that are soon to be kings. lol

antimatter · 05-03-2004, 04:57 PM

I have installed the D'artigan 5.1 amp.

I have to ay that I am very pleased. It has accomidated my systems needs and then some.

It is a very high quality amp. I would recomend it to anyone who desires 5.1 surround sound amplification in a car environment.

If anyone has specific questions about it I can try my best to answer them.

One question I have is How do I use the BIO Port to double the wattage on the subwoofer chanel?

ZanGManN · 05-03-2004, 05:01 PM

its used to bridge multiple amplifiers. i.e. you need another Soundstream amp:

"The BIO (Bridging In and Out) Port™ allows customers to buy an amplifier, use it on their subwoofers, and then later double its power output. In the new D'Artagnan 5.1 amplifier, BIO Port circuitry allows users to add a second amplifier, namely the new Rubicon501/, to drive a single subwoofer channel with double the power! Since these amps have true mono channels it is now possible to bridge two separate amplifiers into one load. By inverting one of the amplifiers and synchronizing their supplies, the amplifiers can double their power into one channel, for up to 1000 watts at 2 ohms mono. Furthermore, the variable controls of the first amplifier (gain, Hawkins Bass Control, and crossover functions) will control both units."

LINK

antimatter · 05-03-2004, 05:49 PM

Thanks for the quick reply.

Thanks for the link. It says which am needs to be used with the D'Artigan (Rubicon501/ amp) but I was curious on how to wire it.

It is nice to have the expandability in case i want to push some more heavy duty woofers. Right now i am pushing 1 10" in a sealed enclosure but at 400w rms and it works fine. I am sure i could push a 12" at that power but if i wanted to do two subs i would definitly need to do the BIO port thing. I am kinda unclear on the how to wire them though

ZanGManN · 05-03-2004, 06:19 PM

From the 501 owners manual:

"B/O Port Bridging Option

The Rubicon5Ol/ amplifier has the ability to be bridged to another identical amplifier for double the output by using the BIO Port. When this feature is used, the master amplifier’s level and crossover switches affect both amplifiers the slave amplifier’s controls are totally bypassed). By switching the phase switch to 180 on the slave amplifier and connecting a RCA cable from the 501/ OUT on the master amplifier to the 501/IN on the slave amplifier both amplifiers are synchronized. Then connect a positive speaker cable to the master amplifier’s positive speaker terminal and the other speaker cable to the slave amplifier’s positive terminal. Finally connect the speaker wires to a single load no less than 2 ohms. This will supply twice the power of a single amplifier."

Doesn't seem clear to me, but then again I'm more of a visual person.

Good luck and thanks for the review!

coachreed · 05-09-2004, 11:34 AM

Quote: Originally Posted by dominic

im sorry but i have to post this even though it will cost a fortune, and ive never seen them for sale!!

its a 6 channel 5x50W + 1x250W digital amp, i.e. it has an spdif in!

http://www.tbk.co.kr/eng/products_so...um=3&idorder=0

I like the looks of this amp and its specs... unfortunately, I couldn't find any other info than what was on that page. Where can I find this amp and how much does it go for? I have a bunch of amps sitting here new in the box to build my system... total of four amps to run 6.1 but if I had an amp like that... I would cut things down to simplify things. Lemme know. TTYL!

Coach... I mean Randy (I often forget who I really am)

Undergoing LS1 Conversion as we speak!
Click Image to Visit My Website!

meddler · 05-09-2004, 06:02 PM

Quote: Originally Posted by dominic

im sorry but i have to post this even though it will cost a fortune, and ive never seen them for sale!!

its a 6 channel 5x50W + 1x250W digital amp, i.e. it has an spdif in!

http://www.tbk.co.kr/eng/products_s...num=3&idorder=0

did anyone ever actually get a price or more infromation on these amps? I might just send them an email.