Search found 4417 matches

by karatestu
Tue Oct 26, 2021 12:06 pm
Forum: DIY
Topic: Modifying my 24 year old B&W P4
Replies: 21
Views: 1369
Great Britain

Re: Modifying my 24 year old B&W P4

Nearly cracked it with these speakers :dance: Close enough to know it's a goer, there are things to iron out https://i.imgur.com/HTSUC6T.jpg I decided to put them the right way up, as they were intended to be used. Right back to the wall which is how I remember using them until I started faffing wit...
by karatestu
Tue Oct 26, 2021 7:34 am
Forum: DIY
Topic: Doc modding Marantz imperial 7
Replies: 1666
Views: 226203
Great Britain

Re: Doc modding Marantz imperial 7

Quote "The 'sound' of bass also has lot to do with what is happening higher up. When an instrument makes a crisp snappy bass sound there are not just bass frequencies produced but also mids and treble because there are a lot of harmonic tones to go a long with the bass fundamental tone. Without...
by karatestu
Mon Oct 25, 2021 4:35 pm
Forum: DIY
Topic: Modifying my 24 year old B&W P4
Replies: 21
Views: 1369
Great Britain

Re: Modifying my 24 year old B&W P4

Back to familiar ground. Semi omni with mid bass up firing. https://i.imgur.com/SrhdhMA.jpg https://i.imgur.com/fc7mpYW.jpg That has tamed the mid range a little and the presentation is not so in my face now :dance: I think I am so used to mid bass pointing up and doped that anything else is a bit o...
by karatestu
Mon Oct 25, 2021 3:46 pm
Forum: DIY
Topic: Modifying my 24 year old B&W P4
Replies: 21
Views: 1369
Great Britain

Re: Modifying my 24 year old B&W P4

Today's foolery has been concerned with my B&W P4 speakers. I put them on their sides with 6.5" mid bass forward firing and put the little sphere with 2" FR above it. Did this so I could get the two drivers as close together as possible. Xover is at 3.5kHz using the original inductor f...
by karatestu
Mon Oct 25, 2021 7:46 am
Forum: DIY
Topic: Doc modding Marantz imperial 7
Replies: 1666
Views: 226203
Great Britain

Re: Doc modding Marantz imperial 7

From diyaudio.com again :grin: Reply With Quote Multi-Quote This Message Old 13th May 2020, 02:48 AM #2 5th element is offline 5th element United Kingdom diyAudio Member "If you don't know how to select good drivers then you certainly don't know how to design a crossover" That's me fooked ...
by karatestu
Mon Oct 25, 2021 6:13 am
Forum: DIY
Topic: Doc modding Marantz imperial 7
Replies: 1666
Views: 226203
Great Britain

Re: Doc modding Marantz imperial 7

"Yeah I'm blown away by the sb65's. The sound is solid and clean. I'm scrapping another build to do a fast with these using this woofer. Dayton Audio RS150P-4A 6" Reference Paper Woofer 4 Ohm It has a great midbass and transparent sound. I think a 500hz 12 db/octave active crossover should...
by karatestu
Mon Oct 25, 2021 6:09 am
Forum: DIY
Topic: Doc modding Marantz imperial 7
Replies: 1666
Views: 226203
Great Britain

Re: Doc modding Marantz imperial 7

Couple of quotes from diyaudio.com "I consider the SB65 the Schwarzenegger of tweeters. It has the high end reach, and can be crossed between 300-500Hz. " Crossing this at 300Hz with a first order might be asking a bit much of it. The above wax probably using second order and above. Distor...
by karatestu
Mon Oct 25, 2021 5:54 am
Forum: DIY
Topic: Doc modding Marantz imperial 7
Replies: 1666
Views: 226203
Great Britain

Re: Doc modding Marantz imperial 7

I read on diyaudio the SB65W needs 100 to 200 hours break in. Reports of the sound calming down considerably when broken in. I will wait for that to happen before playing any more with it. I feel I should be breaking it in with a full range 8f frequencies rather than crossed at 7kHz like I am doing ...
by karatestu
Sun Oct 24, 2021 8:19 am
Forum: Admin-Intro-Chitchat
Topic: Happy Birthday to you....
Replies: 316
Views: 54769
Great Britain

Re: Happy Birthday to you....

CycleCoach :guiness; :guiness; :guiness;
by karatestu
Sun Oct 24, 2021 8:13 am
Forum: DIY
Topic: Doc modding Marantz imperial 7
Replies: 1666
Views: 226203
Great Britain

Re: Doc modding Marantz imperial 7

As I listen quietly nearly all the time then why not design these speakers with a smiley face frequency response ? Elevated volume at low and high frequency will make it a good listen at low volumes (Fletcher Munsen curve). As normsl speech is about 60dB J don't think I listen above about 65 dB :sho...