In this review, we will be comparing HDI-3800 and RTi A5, two Passive Floor-standing speakers from JBL and Polk Audio. Let's have a brief look at the main features
of JBL HDI-3800 and Polk RTi A5 first before getting into our more
detailed comparison.
What size room are the JBL HDI-3800 and Polk RTi A5 speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
In the following sections, we will get into more detail in order to better understand how the JBL HDI-3800 and Polk RTi A5 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both HDI-3800 and RTi A5 are 2-way speakers.
Driver |
JBL HDI-3800 |
Polk RTi A5 |
Driver Setup
|
2-way
|
2-way
|
Tweeter
|
1-inch
|
1-inch
|
Midrange
|
- |
- |
Woofer
|
3 x 8-inch
|
2 x 6.5-inch
|
HDI-3800 features a 1" Tweeter and 3 x 8" Aluminum Woofer . On the other hand, the RTi A5 features a 1" Tweeter and 2 x 6.5" Polymer composite Woofer .
Frequency Response
HDI-3800 has a frequency range of 37-30k Hz whereas RTi A5 has a frequency range of 40-26k Hz. With a minimum frequency of 37Hz, the HDI-3800 can go slightly deeper then the RTi A5's min frequency of 40Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
HDI-3800 is a 4 ohms speaker compared to the RTi A5 which has a nominal impedance of 8 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the HDI-3800 can provide this impedance level.
These two speakers also have different sensitivity levels. HDI-3800 sensitivity is rated at 92 dB and the RTi A5's is rated at 90 dB. This 2 dB difference makes the JBL HDI-3800 a more sensitive speaker compared to Polk RTi A5, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
HDI-3800 can handle a max power of 300 watts RMS from the amp the whereas RTi A5 has a max power handling value of 250 watts RMS, 50 watts less than the HDI-3800.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
Both HDI-3800 and RTi A5 features dual binding post speaker terminals for bi-amping or bi-wiring.
Cabinet Type and Port Position
HDI-3800 has a rear firing port whereas RTi A5 has a front firing ports. Polk RTi A5's front-firing port gives more flexibility in placement in regards to proximity to walls compared to JBL HDI-3800 with its rear-firing port.
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare JBL HDI-3800's and Polk RTi A5's external dimensions. JBL HDI-3800 has external dimensions of 1143.0 x 304.0 x 421.0mm ( 45 x 11-15/16 x 16-9/16inch) whereas Polk RTi A5 has external dimensions of 1007.0 x 269.0 x 404.0mm ( 39-5/8 x 10-9/16 x 15-7/8inch) .
JBL HDI-3800 is clearly the larger of the two speakers. Its body is 35mm wider, 136mm taller and 17mm deeper than Polk RTi A5.
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the JBL HDI-3800 is approximately 1279.8cm2 / 198.4inch2 and base area of the Polk RTi A5 is approximately 1086.8cm2 / 168.5inch2. The HDI-3800 requires 18% more surface area than the RTi A5 which gives it a small disadvantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The JBL HDI-3800 weighs 38.08kg / 83.8lbs and the Polk RTi A5 weighs 18.18kg / 40lbs. This makes the HDI-3800 109% heavier than the RTi A5.
Here is a comparison of how HDI-3800 and RTi A5's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of JBL HDI-3800?
Here are the items that are included inside the box of HDI-3800:
Floorstanding loudspeakerGrille2 Jumper-straps (pre-installed)4 Spike feetOwners Manual
What's in the Box of Polk RTi A5?
Here are the items that come with the RTi A5:
Cherry floor-standing speakerDetachable black cloth grille4 Screw-on spike feetOwners ManualOnline registration sheetPolk Audio product brochure
Max Input Power |
300 watts
vs
250 watts
|
Handle more power from your amplifier |
Sensitivity |
92 dB
vs
90 dB
|
Play louder with same amount of amplification power |
Woofer Size |
8 inches
vs
6.5 inches
|
Larger woofer |
Number of Woofers |
3
vs
2
|
More woofers |
Low Frequency Response |
37 Hz
vs
40 Hz
|
Generates deeper bass |
High Frequency Response |
30k Hz
vs
26k Hz
|
Generates higher frequency |
Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
Height |
1007mm
vs
1143mm
|
Easier to fit in smaller spaces |
Base Surface Area |
1086cm2 (269x404mm)
vs
1279cm2 (304x421mm)
|
Takes less floor space |
General |
JBL HDI-3800 |
Polk Audio RTi A5 |
Brand |
JBL |
Polk Audio |
Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
Power Range |
25-300 watts |
20-250 watts |
Sensitivity |
92 dB |
90 dB |
Impedance |
4 ohms |
8 ohms |
Frequency Response |
37-30k Hz |
40-26k Hz |
Drivers |
|
|
Woofer Quantity |
3 |
2 |
Woofer Size |
8" |
6.5" |
Woofer Composition |
Aluminum |
Polymer composite |
Woofer Surround Material |
Rubber |
Butyl Rubber |
Tweeter Size |
1" |
1" |
Aimable Tweeter |
No |
No |
Midrange Driver |
No |
No |
Firing Direction |
rear |
front |
Physical Specs |
|
|
Height |
1143.0mm (45") |
1007.0mm (39.6") |
Width |
304.0mm (12") |
269.0mm (10.6") |
Depth |
421.0mm (16.6") |
404.0mm (15.9") |
Weight |
38.08kg (83.8lbs) |
18.18kg (40lbs) |
Enclosure |
Bass Reflex |
Bass Reflex |
Finish |
MDF/Lacquer |
Real wood veneer |
Available Colors |
Gloss Black |
Cherry |
Grille |
Yes |
Yes |
Moisture Resistancy |
No |
No |
Connections |
|
|
Biamp Inputs |
Yes |
Yes |
Other |
|
|
Parts Warranty |
5 Years |
5 Years |
Labor Warranty |
5 Years |
5 Years |