Sonic_Impact_technologies_tee_amp_Model

DESCRIPTION :
Sonic Impact introduces the first totally portable amp capable of generating 15W per channel output from a fully battery operated source that fits in the palm of your hand and weighs less than one and a half pounds. Ideally suited for powering the SoundpaX speaker line by Sonic Impact.
The TA2024 is a 15 W /ch continuous average two - channel Class - T Digital Audio Power Amplifier IC using proprietary Digital Power Processing ™ technology. Class - T amplifiers offer both the audio fidelity of Class - A B and the power efficiency of Class - D amplifiers.

FEATURES

Class-T architecture
Single Supply Operation
"Audiophile" Quality Sound
     0.04% THD+N @ 9W, 4.
     0.18% IHF-IM @ 1W, 4.
     11W @ 4., 0.1% THD+N
     6W @ 8., 0.1% THD+N
High Power
15W @ 4., 10% THD+N
10W @ 8., 10% THD+N
High Efficiency
81% @ 15W, 4.
88% @ 10W, 8.
Dynamic Range = 102 dB
Turn-on & turn-off pop suppression
Over-current protection
Over-temperature protection

APPLICATIONS
Battery Powered System
Input for optional AC Adapter 12 Volt/ 2 amp power supply
No heat sink required up to 15W per channel
Intelligent short circuit protection
Connects to any passive 4/8 Ohm speakers
Takes standard audio line input from any sound system

BENEFITS
Fully integrated solution
Reduced system cost with no heat sink
Dramatically improves efficiency versus Class-AB
Signal fidelity equal to high quality linear amplifiers

The Sonic Impact Tee amp is based on Tripath Technology's Class-T amplifier 2024B

Sonic impact portable tee amp Model 5066 sound evaluation was carried out in a offset L shaped lounge room using and DVD Movie DVD music CD Music Digital and Analogue TV . The evaluation set up comprised of various speaker types with impedances from 4 to 8 ohms nominal .The amplifier was tested in both a Multi channel Home Theatre system and Analogue 2 channel ,speaker, equipment & interconnect leads used in the evaluation are listed below .
SOUND EQUIPMENT: (use in evaluate of Tee amp )

Artisan R501 Focal reference 10" 3way
Artisan R1000 Mono blocks ,with DACT passive pre amp
Sherwood R965-R digital receiver with Crystal D/A-A/D 192k/24bit CD remastering up converter
Pioneer S-965 DVD player
Philips HD TV component i/p ,
IRC Digital Satellite receiver
Marantz CD11Mk2 CD player
Luxman 350 Vacuum Turntable with Dynavector R505 Arm +DV17carat Moving coil cartridge & pre amp
SPEAKER CABLE :
QED 25th Silver Anniversary ,QED XTUBE 400,350,300 speaker cable with Eichmann bayonet plugs, Daiichi OFC384 quad cable with 4mm gold banana plugs, Nordost RED Dawn Speaker cable, Axion 8 Speaker cable.
SPEAKERS :
Artisan R501 Focal reference 10" 3way , R455 Floor standing, R200 Computer Min 4" Book shelf, R260 & 620 Ribbon High definition series ,R150 ,R250 MTM ,R300M4k 6.5"phz Bookshelf Speaker

SYSTEM 1 : Set up
Multi channel Home Theatre.
The aim is to is to replace the Left & right front internal power amplifiers of the Sherwood R965 Home theatre Receiver and use the Stereo Tee Amp in their place with the addition of an R1000_R 12" subwoofer that can be turned (on/off ) to as need be .
What we have now is the Sherwood receiver working as a preamplifier with a remote volume control that can decode and supply Home theatre Dolby Digital effects , DVD ,DTS ,Mpeg,PCM Cd music Fm ,Satellite TV,Cable TV ,I pod ,Games or any stereo signal fed to the Tee amp. This enables the Tee Amp to reproduce every type signal coming from the Sherwood receiver and show just how good or bad this amp is with different signal sources.

Use Sherwood R965 Receiver pre amp outputs L&R (front) to drive Sonic Impact Tee amp Left and Right stereo 3.5mm input socket via a Stereo RCA 3.5mm adapter for L&R front Speaker.

Set Volume Control On the Tee amp to "Maximum "( fully Clockwise) and use the Volume on the Sherwood Receiver to control & set the pre levels with Sherwood ( Channel pre set Level) so the volume of the L&R fronts match the Centre .Set the Sherwood subwoofer level to match the L&R front speakers using a Music CD you are familiar with .

Connect the L&R front speakers connected to the Tee amp via a Speaker Terminal Cup 4mm x4 Gold Terminals with say 300mm lengths of twin QED OFC 42 cable that can fit into the Speaker spring terminals on the back of the Tee amp and provide banana terminals for any speaker cables

SYSTEM 2 : Set up
Analogue 2 channel
The aim is to is to replace the Left & right front power amplifiers of a High end stereo system and use the Stereo Tee Amp in their place with the addition of an 12" R1000_R audiophile subwoofer that can be turned ( on/off ) to judge its effect on the over all sound

Set Volume Control On the Tee amp to "Maximum "( fully Clockwise) and use the Volume on the integrated amp , pre amp or passive volume control to control & set the stereo speaker level.

SUBWOOFER : ( yes please )
The only area which lacks current drive with the Tee Amp is the lower bass and as such I recommend a quality 8 " 10" 12 " active subwoofer as a "must" for medium to large rooms . Near field monitoring with small speaker systems in ,small rooms , home studios ,computer gaming systems, I would still recommend a 6'' to 8" Powered subwoofer to fill in the lower octaves of bass

TEE AMP & SPEAKER SENSITIVITY (dbSPL):
I recommend speakers with higher averages than standard >85,86,87 db sensitivity's. The speaker sensitivity should be > 90(dbSPL) + to enable the Sonic Impact 5066 Tee Amp to provide adequate system listening levels.
Speakers below < 90db SPL will not generate enough undistorted ( dynamic) volume level with this amplifier and tend to go into clipping prematurely when you drive the speakers harder in an attempt to match listening levels to your room & system .

SPEAKER IMPEDANCE:
I recommend speakers with a nominal impedance of 4 to 8 ohms . 4 ohm speakers that dip below 3.2ohms will cause premature clipping and thus introduce distortion

I recommend a quality DC power supply capable of 3A to 5 A DC Min at 12V ( avoid power packs with built in auto current limiting ).
For the evaluation I used a 30 Amp 0-30V DC Variable power supply so I could adjust the V+ supply voltage to the Tee amp to examine both low and high voltage range cut out points and also to enable assessment of the variation in sound quality with variations in V+ voltages verses speaker types and load impedances from 3.2ohm to 8ohm .

Designers Note : From experiment I found that 13V DC ( no more no Less) measured at the Tee amp DC input socket enabled the best sound quality on all types of high end music or DVD movies with 4 or 8 ohm speakers attached . The lower cut out voltage was measured 8.5V .This system should not be run above 13.5V DC or the amp will fail or will go into auto shut down mode . Beware some unregulated power packs are > 13.5V and will cause the Tee amp to shut down or not work.

Various combinations of pre Amp with DVD Cs were used to play back through the Tee amp over a period of weeks .The sonic results in every case were outstanding dynamics and detail so given the Tee amp price , size and sound quality I feel its a mean feat of achievement for Sonic Impact Technologies 5066 tee amp .

This little amp has so many uses and applications the mind boggles the sound quality is Excellent and high end in every aspect with fast dynamic lower bass deep midrange and extended top end detail to die for , "and all from a teeny weenie little Digital IC amplifier in a plastic box , Sonic impact have applied the Tripath TA2025B IC to perfection and things can only get better with the upgrades & Mods . Rock , Jazz ,Hip Hop , Rap , pop, classical all take on a new dimension along with DVD movie effects and also the music background .
The only area of the Sonic Impact Technologies amplifier that requires assistance is the bottom end bass which can be a non event for bass lovers on most program material . I recommend a high quality active subwoofer unit with good filters as mandatory and if judiciously adjusted to suit the room acoustics and speakers will, leave you with no need for the power amplifier it replaced .

Russell's Tee amp in the nutshell
"Do not go to jail do not got to a Mayfair marble arch or Mars , go out and buy a tee amp for peanuts ,then experiment with the input and output connection leads and power supply and you will get the same shock and the aural pleasure I received , Where is its all coming from I said and wow ! what can I do with this amp when its great already!"" its a fun low cost project enjoy yourself " "

Designers Note : The quality of the power supply , interconnect leads ,speaker leads ,speaker terminals, preamp and dc power supply will determine the resultant sound quality that the Tee amp will deliver . The better the quality of the components the more dynamic & detailed the sound will be. Long term evaluation listening was done using a pair of 5"MTM ribbon speakers 4ohm (3.2dcmin) with a true 92.5 dbSPL Sensitivity with and with out a subwoofer for DVD movies and music .
MODIFICATIONS:
Stones Upgrades Tweaks Mods V1 : Tee amp See pictures below and more info to come
Stones Upgrades Tweaks Mods V2 : Tee amp BI AMP 2 way ribbon Speaker to be continued......

L&R front speakers connected to the Tee amp via a Speaker Terminal Cup 4mm x4 Gold Terminal

Sound Evaluation Speaker lead from Tee amp terminal cup to Ribbon speakers used for evaluation , Daiichi OFC 384 Quad flat profile copper braid (Pic above), QED XTUBE 300, 350 , 400 , with Eichmann bayonet plugs ,QED 25 Silver anniversary , Orca Axion 6 , Nordost Red Dawn ref

Tee amp rear showing Speaker ,L&R RCA interconnect leads via 3.5mm gold RCA adaptor from Sherwood L&R front preamp out .
Eichmann Silver bullet plugs fitted to QED Silver spiral cable

Sherwood Hometheatre system with Sonic Impact 5066 Tee amp in centre of on floor with 30Amp power unit , Stones Ribbon Speakers Kit, R1000 remote subwoofer Kit, 12" subwoofer

Board held to chassis by plastic posts Tripath TA2025A Digital Class T amp under neath large solder pads

Change 25K Log A input volume control to external Alps , Bourne , or DACT
Or remove 25K Log A input volume control from cct and use direct input to board from a pre amp
Add miniature DC power switch to replace on/off switch on original volume control

Inputs L&R : Add external WBT , Boochino Audio , or any HQ Female RCA Chassis socket

"Sonic Impact T-Amp - Integrated Amplifier - True Giant-Killer" Shortly after this review was published, the Sonic Impact T-Amp was sold out world-wide. Read the review at http://www.tnt-audio.com/ampli/t-amp_e.html

The Sonic Impact Tee amp is based on Tripath Technology's Class-T amplifier 2024B, see data sheet
http://www.tripath.com/audio.htm