ScoscheCarAudio

Scosche HD is designed for value without compromising sound quality or components. The HD amplifier line-up includes 2 amps. The 2-channel 400 watt amplifier (#HDA4002) boasts a 50 watts RMS x2 at 4 Ohms power output. The 4-channel 800 watt amplifier (#HDA8004) has 50 watts RMS x 4 at 4 Ohms power.

Features
-Thermal overload protection
-Sturdy Aluminum Side Panels
-RCA and high level inputs
-Brushed Aluminum Heatsink and Top Plate
-Dynamic bass boost

__________________
Questions? Contact Scosche

ScoscheCarAudio

The two new HD amplifiers both feature Class-D topology, thermal overload and short circuit protection, variable crossovers, MOSFET switching power supplies, RCA and speaker level inputs, brushed aluminum heatsink and top plate and dynamic bass boost. In addition, the 5-channel amp and MONO amp have a bass knob included.

The new 5-channel amplifier (#HDA5CHANNEL) is the first all-digital amplifier under $300.00. It’s full-range channels boast 50 watts RMS x4 at 4 Ohms while the subwoofer channel outputs 250 watts RMS at 2ohms for full system power. It also features a separate front and rear input summing, remote bass control port, and selectable gain range.

The 500 watt mono block (#HDA1001) outputs 500 watts RMS x 1 at 2 Ohms and is a full-featured mono amp for under $200.00. It features a power protect indicator, speaker level input and remote bass control port.

Both amps will be available for purchase by Spring of 2013.

__________________
Questions? Contact Scosche

evilcalvin

HDA8004
50 Watts x 4 at 4-Ohms and 1% THD+N ,
86 dBA SN at 1 Watt into 4-Ohms ,
10Hz - 40kHz Frequency Response (-3dB) ,
75 Watts RMS x 4 @ 2 ohm ,
150 Watts RMS x 2 @ 4 ohm ,
THD (RMS Power 1kHz) 1% ,

These are horrible numbers guys!!
S/n 86 decibels means this isn't a clean amp.
THD stands for total harmonic distortion, and this is 1% which is usually reserved for low end 1 (mono) channel amps where noise sometimes helps the amp along.

Notice these amps are not CEA compliant; this means they are tested and rated according to "real world" numbers that are achievable. In the header it talks of "max" ratings which you will only see if you also believe in the easter bunny!!!

__________________
Header*Stainless steel exhaust*Fiberglassed amp rack*Fiberglassed Dual 15" woofer box*True Cold Air Intake w/bumper vent*130 sq feet sound deadening*
JDM Springs 2.5" drop*Motegi FF7 17 lbs wheels
Ixos 0 gauge wire*2 Shuriken SKBT35's for 400 farads capacitance*HiVi 8" woofers in doors*Custom door panels
*MECP Certified *JL Audio Certified *Parrot Certified
I.A.S.C.A. Pro S.Q.I. Competitor

Chances are I might be able to help

Car domain page for my RS8

OC-SD Chapter of Scikotics

evilcalvin

Their LS6C Audiophile 6.5" Component Set
Part Number: LS6c

This looks to be an excellent woofer and most likely a great upgrade to those mediocre mids our cars come with.

Heres the info:

LS6c Audiophile 6.75” Component Set Component Power Ratings Nominal: 80 Watts Peak: 160 Watts Mounting Depth (in) 2.75 Cut-out Diameter (in) 5.75 Shared Features â Nomex Composite Cone â Butyl Rubber Surround â Aluminum Phase Plug â Secure Screw Terminals â Cast Aluminum Frame â Universal Mounting Hole Pattern (6.75”) â 20mm Inverted Titanium Dome Tweeter - Ferrofluid - Neodymium Magnet - Surface, Flush and Angle Mounting Hardware Included â Asymmetrical Reference Grade Crossover - 6dB Lowpass / 12dB Highpass - Vented, Smoked Polycarbonate Case - Audiophile Quality Mylar Capacitors - Large Gauge Air Core Inductors - Aluminum Shrouded 1% Resistors - Impedance Compensation Network - 3 Position Tweeter Attenuation with Oversized Jumpers - DC Voltage Tweeter Protection



LS6C | by Scosche

__________________
Header*Stainless steel exhaust*Fiberglassed amp rack*Fiberglassed Dual 15" woofer box*True Cold Air Intake w/bumper vent*130 sq feet sound deadening*
JDM Springs 2.5" drop*Motegi FF7 17 lbs wheels
Ixos 0 gauge wire*2 Shuriken SKBT35's for 400 farads capacitance*HiVi 8" woofers in doors*Custom door panels
*MECP Certified *JL Audio Certified *Parrot Certified
I.A.S.C.A. Pro S.Q.I. Competitor

Chances are I might be able to help

Car domain page for my RS8

OC-SD Chapter of Scikotics

ScoscheCarAudio

Thanks for your feedback. We apologize for not clarifying how our S/N was measured. Some brands will use S/N at rated power, which is fairly meaningless. The useful number is at 1W to judge residual noise (S/N). Our stated spec was an average between minimum and nominal gain positions, but certainly at 1W in accordance to CEA. CEA S/N is nearly always at Min Gain due to the 2V input, 1W output method. They are CEA2006 ratings. A CEA2006 rated 86dB at 1 watt S/N is actually very good. You can check the CEA rating for any amp that participates in the CEA2006 standard…Kicker, Rockford, Audison, Focal, or any others and will see that our HD amp compares very well regardless of brand or cost.

The THD rating is <1% @ rated power. This does not mean we have 1% distortion, but"<" means "less than". Again this is a CEA2006 spec and any participating amp's rating is supposed to be less than 1% THD at rated power. It really just means we are in compliance. This stops companies from claiming that an amp is say 200W without telling you that 200W rating is at 50% distortion. To be specific, our actual THD is around 0.04%. To put that into perspective, 0.1% THD is considered inaudible.

As stated, many brands simply follow the CEA guideline for <1%, which is the onset of clipping, indicating the clean full power delivery of the amplifier. THD between 1W-10W is most important, since the majority of listening is done there. 1% is also considered the common threshold for audible distortion for full-range playback (a trained listener might be able to hear 0.1% under very controlled conditions). For bass playback, we'd challenge most anyone to hear even 10% if not 20%.

Here’s some actual measurements and couple additional notes:
1) Power output is measured with all channels driven. Some brands drive just one channel to alleviate the full load on the power supply
2) CEA power spec means that it will deliver that power for at least 1min without roll-back or shutdown. In the case of HD, they never shutdown into 4ohm, and only thermal into 2ohm after 20min or so playing sine waves. Many amps barely make 1min.
3) Channel Separation (Crosstalk) is inaudible above 50dB. Even the best turntable (LP) could barely score in the high 40’s.
Without mentioning who specifically, a major brand at over 2x the price has 82.5dB S/N at 1W in their 4ch, worse THD and crosstalk. HD amps and speakers were built on the idea of offering a very good product for an extremely competitive price.

__________________
Questions? Contact Scosche