Advertisement
Quick Links
High Fidelity Engineering Co.
1202 N.E. Adams Street, Peoria IL 61603 (309) 671 2428
High Definition Towers under evaluation in the Decware reference room
DECWARE / High Definition Tower speakers
model HDT206EM
OWNERS MANUAL
This manual as well as additional information and support can
be found at:
www.decware.com
Advertisement
Subscribe to Our Youtube Channel
Summary of Contents for Decware HDT206EM
- Page 1 High Fidelity Engineering Co. 1202 N.E. Adams Street, Peoria IL 61603 (309) 671 2428 High Definition Towers under evaluation in the Decware reference room DECWARE / High Definition Tower speakers model HDT206EM OWNERS MANUAL This manual as well as additional information and support can be found at: www.decware.com...
-
Page 2: Driver Removal
After you re-install the driver you can remove the paper and tape. PACKING Your HDT speakers are shipped with the Decware modified Fostex driver installed. There is also a top plate and grill (both removable) in each shipping carton. DAMAGE Please inspect your speakers for damage when you unpack them. -
Page 3: Top Plate
HDT206EM OWNERS MANUAL SETUP Once you have your new speakers unpacked and inspected for damage it’s time to set them up and start listening. Your speakers are shipped ready to play. GRILLS The removable grills may be left on during playback or taken off. - Page 4 HDT206EM OWNERS MANUAL THE BEST AMPLIFICATION FOR FIDELITY These speakers are honest. They let you hear exactly what the limitations of all preced- ing gear is. Bad recordings will sound bad. Good recordings will sound REAL. The fi- delity of any system is restricted by the weakest link in the component chain. This is usually the source, followed by amplification.
- Page 5 HDT206EM OWNERS MANUAL PLACEMENT AND IMAGING CONT. the width of the room as does the depth. This is considered a near-field arrangement with respect to the listening chair and is ideal for those infatuated with the finer points of music playback. In the reference room pictured on the manual being fed with a top notch source the speakers have a perfect frequency balance with believable weight and dynamics while maintaining a glass smooth top end at all times.
- Page 6 HDT206EM OWNERS MANUAL The HDT features a super high order cabinet design developed in 1989 by Steve Deckert. Shown in natural Maple with Grill. FEATURES The cabinet design offers superior performance over standard reflex enclosures in both linearity and imaging. It has many of the advantages of a horn loud- speaker with none of the drawbacks.
- Page 7 High efficiency of 96dB with 1 watt at 1 meter. • Excellent power handling up to 30 watts RMS. • Single Point source. • Decware modified FE206E Fostex full range 8 inch driver. • New Decware Phase Guide Technology. • No crossovers of any kind. •...
-
Page 8: Impulse Response
HDT206EM OWNERS MANUAL CABINET These features are in primarily due to an esoteric multi-chamber cabinet where each chamber has it own resonance followed by a group resonance from the other chambers. Careful tuning creates an enclosure with tuning across several octaves. Normal cabinets are tuned at a single frequency and damp the woofer across one octave with the maxi- mum control at the tuning frequency. - Page 9 HDT206EM OWNERS MANUAL LINEAR FREQUENCY RESPONSE This is a typical in-room response at 30 degrees off axis. LOUDSPEAKER PHASE RESPONSE This is the phase response of the speaker across it’s frequency band - unusually good.
- Page 10 HDT206EM OWNERS MANUAL CUMULATIVE DECAY RESPONSE This represents the typical decay or in-room response over 3 milliseconds. WATERFALL PLOT This is the same plot as above but in 3D and over 7 milliseconds.
- Page 11 HDT206EM OWNERS MANUAL DESIGN NOTES by Steve Deckert HOW IT WAS DEVELOPED This cabinet design was actually my first serious endeavor into hi-end audio. It came to pass during the 1980's when I was In- spired and heavily inflicted with the hi-fi fever after taking my first job in a hi-fi re- tail shop.
- Page 12 As you can see from the picture the original design was a two way. It had a reference effi- ciency of about 89dB at 1 watt. Shortly after starting DECWARE the Zen Triode amplifiers were born and suddenly we needed high efficiency speakers. The 89 dB wasn't going to cut it except for low level listening.
-
Page 13: How It Works
HDT206EM OWNERS MANUAL HOW IT WORKS The image above shows a cross sectional view of the cabinet looking down from the top. The orange repre- sents the three chambers that the speaker sees. Cham- ber A is the primary chamber where the speaker is mounted. - Page 14 HDT206EM OWNERS MANUAL seen. The wide band frequencies that come up the transmission line are filtered and dis- persed 90 degrees into a radial pattern into the room. This combined with the passive radi- ators and rear duct creates a more radial sound pattern then conventional designs. It has sound coming off 5 sides of the box in the lower registers of the midrange and bass re- gions.
- Page 15 HDT206EM OWNERS MANUAL PRINCIPLE OF THE DECWARE PHASE GUIDE NOV 2003 by Steve Deckert Our new High Definition Tower speakers are using a modified Fostex full range driver, model FE206E. A respectable sounding driver in it's stock form, a giant killer with the proper modifications.
- Page 16 HDT206EM OWNERS MANUAL In the illustration above, you can see a cross sectional view of the main components in- volved with the application of this device. They are as follows: A) Stock steel pole piece that it attaches to. B) The voice coil bobbin that it sets inside.
- Page 17 To demonstrate this, you can take some gum and cover the opening of the Decware phase guide and listen. It won't matter if you make gum hemispherical or bullet shaped or even flat. If you plug the hole you will hear a significant reduction in high frequency extension and clarity when the opening is blocked.
- Page 18 HDT206EM OWNERS MANUAL was very audibly superior. In practice it is also superior because you don't have to try to computer model the ideal shape for any given cone geometry. The only variable with this design is length which must be determined for each application.
Need help?
Do you have a question about the HDT206EM and is the answer not in the manual?
Questions and answers