Dayton RS722 User Manual
Loudspeaker Kit
Components
Based on the
Dayton Audio RS722 Speaker Kit
The Dayton RS180S-8 woofers and Dayton RS28AS-4 tweeter have been sonically matched and integrated in this system. Both drivers’ motors
incorporate magnetic shielding to prevent interference with adjacent equipment. The net crossover point between the woofer and tweeter is at
about 1,650 Hz and its steep slope helps protect the tweeter from over-excursion. The tweeter utilizes a relatively standard fourth-order electrical
lter, while the woofer uses a third-order electrical lter with a conjugate network to achieve its fourth-order rolloff.
The overall frequency response is quite at although a somewhat exaggerated BBC dip was built into the on-axis response to improve off-axis
performance. This system excels in both imaging ability and dynamic range. The speakers easily “disappear” in the room as they precisely recreate everything from extremely quiet passages to full-orchestra crescendos.
Frequency Graph
Specifications: • Impedance: 4 ohms • Frequency response: 41-20,000 Hz • SPL: 87.5 dB 2.83V/1m • Power handling: 100 watts RMS.
3
Crossover Diagram Optimal Cabinet (1.0 ft
The crossovers included with this kit were optimized for the above driver/cabinet combination. A diagram of the optimal cabinet has been provided as a
guideline. Varying greatly from the optimal cabinet volume may result in changes to the frequency response and less than desired performance.
)
Parts Inventory
Before beginning the assembly process, please read this manual in its entirety and conrm that you have all necessary components listed below.
If anything appears to be missing, please contact your place of purchase immediately
Qty Description
1 Dayton RS28AS-4 aluminum dome tweeter
1 Dayton RS180S-8 aluminum cone woofer
1 Optimized high pass lter
1 Optimized low pass lter
1 2-1/2" adjustable port tube *
1 Input wiring harness (16" w/ .250" terminals)
1 Woofer wiring harness (12" and 20" w/ .250" terminals)
* Overall length of 7" if used in 1.0 ft³ (optimal size) cabinet.
Troubleshooting
The following troubleshooting guide is based on the assumption that an adequate well constructed cabinet is being utilized. In most cases the cause of a
problem will be traced back to the improper wiring of the crossover and not a faulty driver. Common mistakes: using the wrong harness, improper
polarity, bad or loose connections.
Problem: No output from speaker system.
Cause: Bad connection.
Solution: Check connections from the stereo to the input of the
speaker system. If OK, check the connection from the binding post
to tweeter and woofer input terminals. If this is OK, Test speaker on
another system. If sound comes out check initial stereo settings and
connections (speakers on/off). If there is no sound at all, please contact
your place of purchase immediately.
Problem: No output from woofer in individual speaker.
Cause: Bad connection or defective woofer.
Solution: Check connections from crossover board to woofer. If this
is OK, directly test the woofer by hooking it up to stereo system at
low volume setting. If sound comes out of the woofer, then go back
and check connections. If there is no sound at all, then woofer is likely
defective. Please contact your place of purchase immediately.
Problem: No output from tweeter in individual speaker.
Cause: Bad connection or defective tweeter.
Solution: Check connections from crossover board to tweeter. If OK, it
is possible to carefully test the tweeter by directly connecting it to your
stereo. Test at a very low volume for a brief period of time, at the level
of a loud whisper. If there is high-frequency sound, then go back and
check connections. If no sound at all, then tweeter is likely defective.
Please contact your place of purchase immediately.
Problem: There is sound from the speaker, but it is very quiet and
seems to be mostly treble or midrange.
Cause: Woofer and tweeter are wired backwards.
Solution: Immediately cease testing to prevent damage to the tweeter.
Check connections from crossover board to woofer and tweeter, making sure the high pass lter denoted with a “T” on the output terminal
is connected to the tweeter and the low pass lter denoted as “W” is
connected to the woofer.
Qty Description
1 Tweeter wiring harness (12" w/ .250" terminals)
1 Dayton heavy duty binding post pair
1 Acoustic foam 24" x 18" x 1-1/2" UL 94
16 #6 x 3/4" Pan head screws
6 #8 x 3/4" Pan head screws
2 36" Speaker sealing caulk
1 Assembly instruction manual
Problem: Intermittent output of entire speaker, woofer, or tweeter.
Cause: Bad connection in wires or crossover board.
Solution: If entire speaker is intermittent, then check connections
between the input terminals and the crossover board. If just woofer or
tweeter is intermittent, check the wires going to the drivers. If these are
OK, check the connections of the components within the appropriate
section of the crossover.
Problem: In stereo, speakers lack bass or image is unfocused.
Cause: Speakers are out of phase.
Solution: Check connections from amplier to the speakers. Make
sure polarity is the same on both speakers. If correct, check the polarity
of connections going from binding posts to input on crossovers. If this
does not correct the problem, check polarity throughout the rest of the
system, looking for one driver that is wired incorrectly.
Problem: One speaker appears louder than the other.
Cause: Amplier settings, environmental factors, psychoacoustics,
poor connection in crossover.
Solution: Check your amplier to ensure that the balance is set even.
Next, check that one speaker isn’t closer to a wall, window, couch, or
other acoustically important object. This may affect perceived loudness
due to the addition or reduction of extra sound reections. If this is the
case, physically switch the left and right speakers, and re-observe. If the
same location still sounds quieter, then it is the environment. If the quiet
speaker moves, then you may have a problem within the speaker. Often,
if you think one speaker is louder than the other, it will appear so. Have
someone help you do a blind test or take a break and allow time for your
brain to relax. The next day, if one still seems louder, investigate all connections within the crossover.
Problem: Speakers play well, but amplier shuts down.
Cause: Amplier does not have enough power or cannot handle
speaker impedance.
Solution: If using 4 ohm speakers, check receiver/amplier manual to
see if it can handle 4 ohm speakers or if it has a low impedance setting.
If not, upgrade your amplier. If the receiver/amplier can safely handle
the speaker load, then it may simply not have enough power.
P.O. Box 52 • Springboro, OH • 45066-052 • Phone: (937) 743-8248
www.daytonaudio.com
© Dayton Audio
®
IMRS722-C09A
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