There are tons of 8 ohm units, but nobody seems to design for the 16 ohm HF Compression driver (on the high pass side) which make up a good portion of the market. I have exhuasted surfing efforts- nothing so far.
How many dB per octave ( slope ) do you intend?
6 - 12 - 18 or ?
How much wattage will be supplied?
What crossover frequency do you want?
Once you make a decision - check with parts express - they have charts to help create your own passive cross and you can make adjustments in parts values, to accomodate the different impedance between the 2 drivers.
Or biamp the enclosure and use a electronic crossover before the amplifiers. Then you can adjust the cross point and relative levels between your drivers.
Keep in mind by adding a parallel resistor, it will be handling half of the wattage in the high pass part of the circuit. If using a 60 watt compression driver and feeding that much on music peaks - the resistor will also absorb about the same amount of power, therefore 120 watts in the high pass.
HTH
Deric
Does passive crossovers enhanced mid and high's? because i have 1 sub and my mid's are weak does this help? this are complete set speakers from hifonics zxi 6.5
Crossovers don't enhance they separate the music frequencies.
The passive crossovers come in high & low pass.
So naturally the high pass blocks out the bass and the low pass lets the bass frequency through. So the high pass cossovers help protect the speakers from bass frequency. At high power or when you play the system loudly. if you dont have subs your hifonics will distort and damage it self. With a crossover you will be able to play it louder due to less bass frequeny resopnce.
without knowing specific modal can't be sure. but most are externally controlled by the amp. although some were made with a fixed low pass with a 100Hz roll-off.
I want to keep the existing crossover points. Actually the crossover sounds great running at 4/4/8 ohm - but it is a 8 ohm crossover so I'd like to change my woofer and mid components to be able to handle a 4 ohm load properly. (8 at the tweeter is fine)
If you wish to keep the same crossover points you will be replacing all the components of the crossover with different values. There are several crossover calculators available on the net. Check out the links below.
WK
A crossover splits the high and low frequencies into 2 or 3
parts like left and right channels for stereo.passive crossovers use no power supply instead they take the signal
by connecting a capacitor and/or a inductor after the amp and before the woofer,midrange and tweeter most of the time they are bulit inside the speaker box.But no need for a power supply!!
Now active crossovers use a power supply and cost lots more than the passive route but you get much better control and flexabilty as far as adjusting the amount of low frequency you can send to the woofer and vise verse.So the two do the same thing just passive is a few 10 cent parts and active is an expensive piece of electronic equipment much like an equalizer to control and improve sound.
I do know that it is ok to use the 16ohm speakers with the 8ohm amp, as 8ohm amps can safely operate speakers 8ohms and above in impedance. I'm just not familiar enough with crossovers. Are crossovers specifically designed to work with a particular amp output (in terms of impedance), or does it not matter? Do I have to buy/make another crossover that has component ratings that can safely operate with an 8 ohm output? Does the crossover just have to be able to handle a particular amp wattage and voltage range?
"maximum transfer of power is when load impedance equals output impedance."
While that is true, it is totally irrelevant to audio amplifiers.
An audio amplifier is a voltage source, the source impedance of which is in the tens of milliohms range.
i'm trying to figure out how to make my own electronic passive crossovers for my speakers. i know the equations for inductive and capacitive reactance, but the idea of resonance is escaping me. i am trying to calculate a high pass filter for an 8 ohm load and a low pass filter for a 4 ohm load, the crossover being 2KHz. i'd like to know the general equations used, so i can apply them to future projects.
look up an elctronics book at the library
I'm trying to decide which medium to low end receiver to buy for my (6.1 or 7.1) home theater set up. I have the speakers (8 ohm) and a passive subwoofer (4 ohms) but don't know why one would use a crossover switch. Thanks.
A crossover typically separates the frequencies going to you speakers. Your subwoofer won't respond well to high frequencies and may cause poor sound in this range. Same with your regular speakers. They may not respond to the lows like they should. The crossover will help this by routing the right frequencies to the right speakers. It will also help get the most power out of your speakers.
I have a PPI A200.2 art amp (200wx1@4ohm bridged) It doesn't have a crossover. I hear passive crossovers restricts power. What about those F Mod types? Will that suck power out of my amp too? I hear high frequencies coming out of the subs. thanks
get a capasitor and a 2nd batery to put next to your amp
I'm talking about passive crossovers. like an addition besides a resistor. I know professional ones have complicated passive networks. can someone please help?
Add a stage with an automatic gain control prior to the driver if you have wide variations in the amplitude of the input signal to the driver. If the driver input is constant but just too high in amplitude then just add a fixed resistive attenuator to the input to the driver.
If the input to your driver is saturated with a wide band of unwanted frequencies then the only solution is to place a band pass filter at the input that allows the desired frequency through and rejects the frequencies on either side of it.
If the input to the driver contains undesired signals of the same frequency as the desired signals then there is nothing you can do but shut down and go home and tell the little woman what a rough day you had.
All of the above problems I mentioned should have already been eliminated long before the driver stage and I am just kind of guessing at what your problem is so I may be all wrong in what I suggested..
I wish you good luck any way.
This is a very basic tutorial on crossovers. I'm no expert but I hope this video answeres a few questions out there. Enjoy! www.djtutor.com
Inside the earcups are a 40mm bass driver and 16mm high frequency driver connected by a passive crossover network.
The cord length is about 1 meter and is terminated to at the left earphone.
The PS 320 certainly look like high performance headphones and the specs would lead one to believe they are capable of delivering a satisfying listening experience. We found though that the PS 320’s didn’t quite sound as good as they look. While the sound that we experienced was certainly better than what most budget earbuds could ever hope to offer, there was an obvious lack of bass that came as a bit of a disappointment. Outside of the bass department, we felt the PS 320 had a lot of zeal and tended toward the brighter end of the spectrum. While they held together well at most volumes, we did notice that music featuring lots of brass or high string instruments seemed to tax the headphones in a way that compromised their performance. Somehow, the instruments muddled together instead of remaining separate and distinct.
ConclusionFor $199.00, Phiaton’s PS 320 headphones offer good looks, great comfort and easy portability but fall a little short of their expected audio performance. Their anemic bass response and lack of accessories seem to contradict their price and appearance, earning them a slightly lower mark in this review.
Highs: Comfortable, lightweight compact Closed back design minimizes outside noise Sound better than earbuds Lows: Weak bass response Sound gets muddy at high volumes No supplied adapters The success of Peavey's original EuroSys PA systems can be judged from the number still in use today. EuroSys was launched in the late 1980s, and even though Peavey hasn't produced the range for several years, plenty of bands and DJs continue to gig with them – and dealers are still getting daily requests from people searching for EuroSys enclosures.
Therefore, Peavey is delighted to announce the return of the EuroSys, with two brand new full range cabinets plus two new subs.
The EuroSys 700 delivers 350W RMS continuous (700W programme) at 4 ohms through a 12" heavy-duty woofer plus EuroSys 175T compression driver. The Eurosys 800 incorporates a 400W RMS continuous (800W programme) 15" woofer again with the Eurosys 175T compression driver. Subs give a choice of 15" (EuroSys 115) and 18" (EuroSys 118) drivers, each capable of handling 400W RMS (800W programme), and each using specially developed woofers with high power voice coils and dual cooling. Frequency response is 38-250Hz for the EuroSys 115 and 35-250Hz for the EuroSys 118. Both incorporate a passive crossover with a high pass output, employing a low distortion high power inductor and triple capacitor banks for low loss and extended reliability.
It's not just the sonic performance that will earn a big 'welcome back' from the market. These new models also tick all the boxes for gigability: durable 18mm plywood construction, recessed combi jack/Speakon connections, recessed steel handles and stand adaptors (with a satellite pole fitting for the subs), resilient paint finish and curved black heavy-duty grille.
And making sure that the new EuroSys (like its previous incarnation) not only gigs as good as new for years and years to come, but also retains its rugged good looks, high quality protective covers are supplied as standard.
EuroSys 700 Dimensions (HxWxD): 22' (560mm) x 17.5' (445mm) x 15.2' (385mm) Weight: 47 lbs (21.5kg) MRRP: £250.00 / €299.00 EuroSys 800 Dimensions (HxWxD): 25.1' (638mm) x 18.4' (468mm) x 16.5' (420mm) Weight: 54 lbs (24.5 kg) MRRP: £275.00 / €329.00 EuroSys 115 Dimensions (HxWxD): 19.1' (485mm) x 22' (560mm) x 27.5' (700mm) Packed Weight: 32.60 kg MRRP: £265.00 / €339.00 EuroSys 118 Dimensions (HxWxD): 22.2' (565mm) x 23.6' (600mm) x 27.5' (700mm) Packed Weight: 38.60 kg MRRP: £299.00 / €379.00
Pricing and Availability:
The new EuroSys range is available from authorized dealers now. Seee main text for UK and European pricing.
More information:
peavey-eu.com
Yes, Honda is late to this game. Very late. And even at that, Honda really is only dipping its big toe into a segment where so many others have found success and won fans.
In fact, Honda has exceedingly modest expectations for the Crosstour: annual sales of about 3,000 for a car that amounts to a tall station wagon with a long list of standard upscale features.
Toyota has been selling more than 1,000 Venzas a month lately and Subaru's sales have exploded with the introduction of the newly updated Outback.
Officially, the Crosstour – with an estimated price of about $35,000 – is a crossover, which means it's a car sort of pretending to be an SUV. Pretending, indeed. In standard trim, the Crosstour is a front-driver, just like the Accord sedan on which it is based.
In reality, though, the Crosstour is a Honda Accord with a big hatchback at the rear and optional all-wheel-drive, leather seats, power everything, an excellent sound system, a lovely carpeted cargo area with nifty little hatches and cubbies all over, all powered by a strong and fuel efficient 3.5-litre V-6 (271 horsepower).
You read that right. Honda is only offering the Crosstour with a V-6. That's not entirely unusual. The Edge is a V-6-only ride, as is the Murano and the Santa Fe. On the other hand, Subaru has a four-cylinder Outback and Toyota can barely meet demand for its four-banger Venza.
Caution, thy name is Honda. But that's been the whole story of Honda for this past year.
More than a year ago, Honda began making radical moves to cut costs and align production with the falling demand of a global recession. To save money, Honda jettisoned its Formula One racing effort, offered buyouts to scores of workers, negotiated pay cuts with others, carefully revisited its new model development program and moved quickly to do its best at aligning production to falling demand. Honda's problems have been compounded by a strong yen that makes exports from Japan expensive in Canada and the United States.
The result of all Honda's diligence: a profit last year and Honda is predicting a profit for the fiscal year that ends next March 31.
“This was a really tough year,” Honda Motor president Takanobu Ito recently told trade journal Automotive News. “We are barely making a profit. This is something we had anticipated from the very beginning, and our projection turned out to be true.
“Especially in the United States, our biggest market, the recovery, for us at least, is slow. And Europe's recovery is even slower. This is having a major negative impact on our corporate performance.”
But not as bad as Ito might lead you to believe. Honda is predicting an annual profit of $2.1-billion (U.S.) for the current fiscal year. Jerry Chenkin, Honda Canada executive vice-president, says Honda is obsessive about earnings; without profits, there is no money for new-model development. And without new models and new technologies, Honda will fall behind the competition.
Yet while Honda does have leadership in many areas, including having Canada's best-selling car for nine straight years in the Civic, the Crosstour is an example of Honda chasing the competition.
This may be because Honda has been reluctant to tamper with its current lineup. In Honda's world, the Crosstour fits in between the Honda CR-V compact crossover and the Honda Pilot SUV. Honda apparently did not feel it needed something to fill that gap – until now.
It's possible Honda is not offering the Crosstour with a four-banger in order to avoid competing against the CR-V and hurting sales of the latter. Honda isn't saying. But the body language of company types suggests Honda Canada would rather have a four-cylinder Crosstour and let the CR-V – given a facelift for 2010, by the way – fend for itself.
The Crosstour, in fact, is a perfectly sensible Honda Accord hatchback. Moreover, it looks much better in person than any of the pictures might suggest. The newest Honda isn't quite as large and heavy as the Pilot or the Odyssey minivan. Yet it has roomier passenger quarters than the CR-V.
In terms of dimensions, well, the Crosstour is similar in width and height to the likes of the Venza, Murano and Outback, though the Honda has less ground clearance than these three rivals. Nonetheless, the Honda sits higher off the ground than a normal Accord sedan.
The whole point of the ride height here is twofold: It makes entry and exit easier for the targeted baby boomer buyers; and when equipped with the Real Time four-wheel-drive system from the CR-V, the tall-ish Crosstour gives you a shot at escaping your driveway after a snowstorm.
As a family ride – or an empty-nester baby boomer utility wagon – the Crosstour is just excellent. With 2,871 litres of cargo space when the 60/40-split rear seats are folded, the Crosstour has more space than a Venza and Outback. The rear seats fold completely flat, too – with an easy pull of handles that are an easy reach in the cargo hold.
On the other hand, with the rears up, the Crosstour‘s cargo hold is 728 litres, versus 869 and 972 respectively in the Toyota and Subaru. That means if you load up four sets of golf clubs, you'll need to pull out the drivers and tuck them here and there, creatively. Honda has included tie-down hooks, which are useful, indeed.
Moreover, Honda put the spare tire under the car and it has a plastic cover down there to keep it clean. With the spare out of the way, there is additional storage space below the rear floor in the cargo hold. A deep and hidden removable utility box provides storage, while on each side there are two recessed areas providing some hidden space, also.
Up front, ahead of the back seats, everything is essentially an Accord. That's good. The design here is clean and completely sensible, the materials durable looking and nicely put together. You will not find yourself looking for a knob or a control.
The cabin's soft-touch plastic material looks and feels fairly expensive and the steering wheel is meaty, fitting nicely into your hands. The dials are big and thoroughly legible. The dash has a simple flow across it. With Honda, function trumps art.
Not only is the Crosstour functional, it is a fine car to drive. Ride quality is almost identical to the Accord, which should not be a surprise; these Hondas share basic suspension components. Honda says minor revisions to the chassis have yielded a 20-per-cent increase in bending rigidity, along with a 3-per-cent increase in torsional or twisting rigidity.
The V-6 is plenty powerful and has Honda's fuel-saving cylinder-deactivation feature (Honda's Variable Cylinder Management). Mated to a standard five-speed automatic transmission – the only downside to this tranny is a hesitance to downshift – the Crosstour boasts pretty decent fuel economy using regular fuel: 11.5 litres per 100 km city/7.2 highway for the front-driver and 12.3 city/8.0 highway for the AWD version. The Honda is slightly more efficient than the six-cylinder Venza and Outback.
Honda expects the Crosstour to have all the best scores in crash tests and it certainly comes with the full range of active and passive safety features – from airbags all over to an anti-skid system. So it really is the full package.
Honda is late with the Crosstour and still lacking a four-banger, too. Nonetheless, the competition should be taking notice. In its niche, this new crossover is a standout.
2010 Accord Crosstour
Type: Five-door, mid-size cross-over wagon
Price: $35,000 (estimated)
Engine: 3.5-litre V-6, SOHC
Horsepower/torque: 271 hp/254 lb-ft
Transmission: Five-speed auto
Drive: Front-wheel-drive
Fuel economy (litres/100 km):
11.5 city/7.2 highway for FWD; 12.3 city/8.0 highway for AWD; regular gasAlternatives: Ford Edge, Subaru Outback, Toyota Venza, Nissan Murano, Mazda CX-7, Hyundai Santa Fe
Like
Good fuel economy for this class Functional hatchback design with a clean and useful interior Creative storage space Honda’s history for high quality and excellent safety scoresDon’t like
Sloping roof compromises rear-seat headroom Cargo area design means you’ll need to be creative when loading four sets of golf clubs Transmission is a bit reluctant to downshiftEditor's Note: The MSRP of the 2010 Honda Accord Crosstour EX-L two-wheel-drive model is $34,900.
Crossover network for speaker can improve the quality of the sound, reducing the distortion level caused by excessive signal beyond the speaker’s frequency response. This articles describes how you can design your own crossover networks for your Hi-Fi speaker set. Both first order and second order passive filter will be explained in this article. First [...]
Passive filters use inductors (L), capacitors (C) and resistors (R) to build the filter. Passive filters can be used in applications where active filters
When SUV demand went from rugged outdoors fantasy to comfortable suburban reality, macho truck to family crossover, Nissan scored big with its and more »
The HTS4B is equipped with one active magnetically shielded 12" driver mounted on the front side of a compact cabinet and two 12" passive radiators,
The culture changes, and therefore music that used to be surprising becomes more passive. Because everybody plays it, it becomes cool to like disco.
