Peerless 830878 3-1/2" Passive Radiator

Brand:| Model: 830878
A useful alternative to overlong ports, passive radiators like the Peerless 830878 offer designers a well-proven method of extending and enhancing bass response.
  • Coated paper cone with rubber surround
  • Low resonance frequency for deepest possible bass
  • Cosmetic surface mount steel frame matches Peerless SDS series
  • Straight-sided frame fits into narrow enclosures and permits tight spacing
  • Compatible with small woofers by Peerless and others
Part # 
Weight: 0.3 lbs.  
List Price$15.99
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Part # 264-1060
Qty:  EA
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Product Details

Peerless 830878 3-1/2" Passive Radiator

The Peerless 830878 3-1/2" passive radiator is a cosmetic and performance complement to the Peerless SDS Series woofers. Its attractive stamped steel frame, coated paper cone, and rubber surround are visual and performance matches with the Peerless speaker drivers. Passive radiators are a viable alternative to ports whenever duct length exceeds available enclosure space. May be used in multiples to achieve desired performance.

Specifications: • Fs: 29 Hz • Cms: 791 um/N • Mms: 38.5 g • Rms: 4.8 kg/s • Sd: 50.2 sq. cm. • Dimensions: Outside diameter: 4.85", 4.14" across flats, Cutout diameter: 3.64", Depth: 1.35".

Product Specifications
  • Nominal Diameter3-1/2"
Peerless 830878 3-1/2" Passive Radiator
  • BrandPeerless
  • Model830878
  • Part Number264-1060
  • UPC844632083914
  • Product CategoryPassive Radiators
  • Unit of MeasureEA
  • Weight0.3 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Peerless 830878 3-1/2" Passive Radiator

Product Q&A

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who own this product or have experience with it.
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Peerless 830878 3-1/2" Passive Radiator

What is the Vas, Qms and Xmax of this passive radiator?  I need it to look at speaker cabinet designs.

Asked by: hoovie87

I have one pair of 830855:s and one pair of 830856:s lying around, brand new. I'm thinking about using these together with a couple of 830878. What would be a suitable enclosure volume for one driver together with one or two passives?

Asked by: Sam B
This passive will work with both of these relatively well. For the 830855 I would recommend .08 cubic feet total with two passives for a tuning frequency of about 60 Hz, no weight added. For the 830856 I would recommend .13 cubic feet total with two passives for a tuning frequency of 50 Hz, no weight added.
Answered by: MattP
Date published: 2014-10-16

What will be the suitable parameter to look for while considering PR's? Like for vented enclosures, we can key in dia and program will tell the length. So for passives, what should I key in that will tell that this PR is suitable?

Asked by: arjunm009
There isn't a single parameter that will tell you whether a given driver will work well with a passive radiator. Usually drivers that are designed for very small vented enclosures will work with a PR, especially if the volume is too small for a port to be practical. In order to tell how well it will work with a given PR, a model will need to be done.
Answered by: MattP
Date published: 2014-10-07

I would be very interested to know which programs I could use to tune(with great precision) the passive radiator with the enclosure. Help please ?

Asked by: Jaana
The program we sell that would work well for this is BassBox 6 Pro which you can see below.http://www.parts-express.com/bassbox-6-pro-software-cd-rom--500-923
Answered by: MattP
Date published: 2014-09-23

Can I use this radiator with two ND91-4 3 1/2" in an enclosed box of 10" x 2.75" x 4.25"? Thanks!

Asked by: Jcroman
This should work well. A single radiator will tune the enclosure to about 66 Hz with no weight added.
Answered by: MattP
Date published: 2014-09-03

I'm building a small portable speaker with 4 dayton CE46P-4 1-7/8" Paper Full Range Drivers (Fs = 150 Hz). Would two of these passive radiators help to extend the bass of the 4 full range drivers? Volume enclosure needed and are tweeters necessary? 

Asked by: Govea9
The passive will create a tuning frequency too low for four of these drivers, around 50 Hz. This will cause a higher F3 than you would be able to get in a standard vented enclosure. I would recommend going vented, 0.08 cubic feet total for all four drivers with a 1" diameter, 1-3/4" long port for a tuning frequency of 100 Hz.
Answered by: MattP
Date published: 2014-08-18

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