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.  
Due In: 7/31/2014
List Price$15.99
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Buy 4-up$10.00
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

I'm building a small portable speaker with four dayton CE46P-4 1-7/8" Paper Full Range Drivers (Fs = 150 Hz). Would one of these passive radiators help to extend the bass of the 4 full range drivers? Also what would be the min. volume for my enclosure?

Asked by: dcdiyaudio
The passive will help bring the F3 down to about 115 Hz in 0.084 cubic feet with no weight added.
Answered by: MattP
Date published: 2014-04-18

I am planning to build boxes using 4 Tectonic Elements HIBM65C20F. How many of these would I need, and what size box? Should I step up to a larger passive like an 8 inch? What feq would it be tuned to? and also information using 2 Tectonic BMR's

Asked by: coyotesingstowind
Four drivers and four passives will work well together in about .8 cubic feet. With no weight added, you will have an F3 of about 70 Hz.
Answered by: MattP
Date published: 2014-04-09

Can I use these to extend/increase low frequency output of a full-range 6x9 in a small, sealed enclosure? Would multiples improve lower frequency response vs. just one, such as to supplement 60-80hz range?

Asked by: dec272011
I would not recommend a passive this small to be used with a 6x9. Something like our 8" Dayton would be a better choice although I cannot model the box volume or tuning frequency without driver specs.
Answered by: MattP
Date published: 2014-03-18

How do i tune this passive radiator ?

Asked by: juan23
Weight is to be added to the back of the cone or dustcap by gluing washers or other small weights to it.
Answered by: MattP
Date published: 2014-02-12

Could this be used with two Dayton ND65-4?

I have these two daytons in a .07 cubic box but its a little small for them. I would like to increase the bass output and was hoping this would suit my needs.
Asked by: longhorn262
If you were to incorporate one passive with two ND65 drivers with no weight added, you will have a tuning frequency of ~50 Hz and an F3 of about 85 Hz. I would not expect too much below 75-80 Hz with a setup like this.
Answered by: MattP
Date published: 2014-03-24

Can I use this with 2 2" full range driver?

Hi,Is it possible to use this PR (one of it) with 2 2" full range drivers?And I assume it's oke in using the same recommended volume for a vented enclosure stated on the drivers specification for my enclosure (see my related product)And mount it on the same wall where the drivers are?Thanks!
Asked by: Luciano
You can although you will not benefit from it much if at all. These drivers have a free air resonance of 175 which means they will not be able to reproduce low frequencies anyway, so the passive will not be doing much.
Answered by: MattP
Date published: 2014-03-24

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